--- zzzz-none-000/linux-3.10.107/tools/perf/builtin-trace.c 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/tools/perf/builtin-trace.c 2021-02-04 17:41:59.000000000 +0000 @@ -1,34 +1,1295 @@ +/* + * builtin-trace.c + * + * Builtin 'trace' command: + * + * Display a continuously updated trace of any workload, CPU, specific PID, + * system wide, etc. Default format is loosely strace like, but any other + * event may be specified using --event. + * + * Copyright (C) 2012, 2013, 2014, 2015 Red Hat Inc, Arnaldo Carvalho de Melo + * + * Initially based on the 'trace' prototype by Thomas Gleixner: + * + * http://lwn.net/Articles/415728/ ("Announcing a new utility: 'trace'") + * + * Released under the GPL v2. (and only v2, not any later version) + */ + +#include +#include #include "builtin.h" #include "util/color.h" +#include "util/debug.h" #include "util/evlist.h" +#include "util/exec_cmd.h" #include "util/machine.h" +#include "util/session.h" #include "util/thread.h" #include "util/parse-options.h" +#include "util/strlist.h" +#include "util/intlist.h" #include "util/thread_map.h" -#include "event-parse.h" +#include "util/stat.h" +#include "trace-event.h" +#include "util/parse-events.h" #include #include +#include +#include +#include + +/* For older distros: */ +#ifndef MAP_STACK +# define MAP_STACK 0x20000 +#endif + +#ifndef MADV_HWPOISON +# define MADV_HWPOISON 100 + +#endif + +#ifndef MADV_MERGEABLE +# define MADV_MERGEABLE 12 +#endif + +#ifndef MADV_UNMERGEABLE +# define MADV_UNMERGEABLE 13 +#endif + +#ifndef EFD_SEMAPHORE +# define EFD_SEMAPHORE 1 +#endif + +#ifndef EFD_NONBLOCK +# define EFD_NONBLOCK 00004000 +#endif + +#ifndef EFD_CLOEXEC +# define EFD_CLOEXEC 02000000 +#endif + +#ifndef O_CLOEXEC +# define O_CLOEXEC 02000000 +#endif + +#ifndef SOCK_DCCP +# define SOCK_DCCP 6 +#endif + +#ifndef SOCK_CLOEXEC +# define SOCK_CLOEXEC 02000000 +#endif + +#ifndef SOCK_NONBLOCK +# define SOCK_NONBLOCK 00004000 +#endif + +#ifndef MSG_CMSG_CLOEXEC +# define MSG_CMSG_CLOEXEC 0x40000000 +#endif + +#ifndef PERF_FLAG_FD_NO_GROUP +# define PERF_FLAG_FD_NO_GROUP (1UL << 0) +#endif + +#ifndef PERF_FLAG_FD_OUTPUT +# define PERF_FLAG_FD_OUTPUT (1UL << 1) +#endif + +#ifndef PERF_FLAG_PID_CGROUP +# define PERF_FLAG_PID_CGROUP (1UL << 2) /* pid=cgroup id, per-cpu mode only */ +#endif + +#ifndef PERF_FLAG_FD_CLOEXEC +# define PERF_FLAG_FD_CLOEXEC (1UL << 3) /* O_CLOEXEC */ +#endif + + +struct tp_field { + int offset; + union { + u64 (*integer)(struct tp_field *field, struct perf_sample *sample); + void *(*pointer)(struct tp_field *field, struct perf_sample *sample); + }; +}; + +#define TP_UINT_FIELD(bits) \ +static u64 tp_field__u##bits(struct tp_field *field, struct perf_sample *sample) \ +{ \ + u##bits value; \ + memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \ + return value; \ +} + +TP_UINT_FIELD(8); +TP_UINT_FIELD(16); +TP_UINT_FIELD(32); +TP_UINT_FIELD(64); + +#define TP_UINT_FIELD__SWAPPED(bits) \ +static u64 tp_field__swapped_u##bits(struct tp_field *field, struct perf_sample *sample) \ +{ \ + u##bits value; \ + memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \ + return bswap_##bits(value);\ +} + +TP_UINT_FIELD__SWAPPED(16); +TP_UINT_FIELD__SWAPPED(32); +TP_UINT_FIELD__SWAPPED(64); + +static int tp_field__init_uint(struct tp_field *field, + struct format_field *format_field, + bool needs_swap) +{ + field->offset = format_field->offset; + + switch (format_field->size) { + case 1: + field->integer = tp_field__u8; + break; + case 2: + field->integer = needs_swap ? tp_field__swapped_u16 : tp_field__u16; + break; + case 4: + field->integer = needs_swap ? tp_field__swapped_u32 : tp_field__u32; + break; + case 8: + field->integer = needs_swap ? tp_field__swapped_u64 : tp_field__u64; + break; + default: + return -1; + } + + return 0; +} + +static void *tp_field__ptr(struct tp_field *field, struct perf_sample *sample) +{ + return sample->raw_data + field->offset; +} + +static int tp_field__init_ptr(struct tp_field *field, struct format_field *format_field) +{ + field->offset = format_field->offset; + field->pointer = tp_field__ptr; + return 0; +} + +struct syscall_tp { + struct tp_field id; + union { + struct tp_field args, ret; + }; +}; + +static int perf_evsel__init_tp_uint_field(struct perf_evsel *evsel, + struct tp_field *field, + const char *name) +{ + struct format_field *format_field = perf_evsel__field(evsel, name); + + if (format_field == NULL) + return -1; + + return tp_field__init_uint(field, format_field, evsel->needs_swap); +} + +#define perf_evsel__init_sc_tp_uint_field(evsel, name) \ + ({ struct syscall_tp *sc = evsel->priv;\ + perf_evsel__init_tp_uint_field(evsel, &sc->name, #name); }) + +static int perf_evsel__init_tp_ptr_field(struct perf_evsel *evsel, + struct tp_field *field, + const char *name) +{ + struct format_field *format_field = perf_evsel__field(evsel, name); + + if (format_field == NULL) + return -1; + + return tp_field__init_ptr(field, format_field); +} + +#define perf_evsel__init_sc_tp_ptr_field(evsel, name) \ + ({ struct syscall_tp *sc = evsel->priv;\ + perf_evsel__init_tp_ptr_field(evsel, &sc->name, #name); }) + +static void perf_evsel__delete_priv(struct perf_evsel *evsel) +{ + zfree(&evsel->priv); + perf_evsel__delete(evsel); +} + +static int perf_evsel__init_syscall_tp(struct perf_evsel *evsel, void *handler) +{ + evsel->priv = malloc(sizeof(struct syscall_tp)); + if (evsel->priv != NULL) { + if (perf_evsel__init_sc_tp_uint_field(evsel, id)) + goto out_delete; + + evsel->handler = handler; + return 0; + } + + return -ENOMEM; + +out_delete: + zfree(&evsel->priv); + return -ENOENT; +} + +static struct perf_evsel *perf_evsel__syscall_newtp(const char *direction, void *handler) +{ + struct perf_evsel *evsel = perf_evsel__newtp("raw_syscalls", direction); + + /* older kernel (e.g., RHEL6) use syscalls:{enter,exit} */ + if (IS_ERR(evsel)) + evsel = perf_evsel__newtp("syscalls", direction); + + if (IS_ERR(evsel)) + return NULL; + + if (perf_evsel__init_syscall_tp(evsel, handler)) + goto out_delete; + + return evsel; + +out_delete: + perf_evsel__delete_priv(evsel); + return NULL; +} + +#define perf_evsel__sc_tp_uint(evsel, name, sample) \ + ({ struct syscall_tp *fields = evsel->priv; \ + fields->name.integer(&fields->name, sample); }) + +#define perf_evsel__sc_tp_ptr(evsel, name, sample) \ + ({ struct syscall_tp *fields = evsel->priv; \ + fields->name.pointer(&fields->name, sample); }) + +struct syscall_arg { + unsigned long val; + struct thread *thread; + struct trace *trace; + void *parm; + u8 idx; + u8 mask; +}; + +struct strarray { + int offset; + int nr_entries; + const char **entries; +}; + +#define DEFINE_STRARRAY(array) struct strarray strarray__##array = { \ + .nr_entries = ARRAY_SIZE(array), \ + .entries = array, \ +} + +#define DEFINE_STRARRAY_OFFSET(array, off) struct strarray strarray__##array = { \ + .offset = off, \ + .nr_entries = ARRAY_SIZE(array), \ + .entries = array, \ +} + +static size_t __syscall_arg__scnprintf_strarray(char *bf, size_t size, + const char *intfmt, + struct syscall_arg *arg) +{ + struct strarray *sa = arg->parm; + int idx = arg->val - sa->offset; + + if (idx < 0 || idx >= sa->nr_entries) + return scnprintf(bf, size, intfmt, arg->val); + + return scnprintf(bf, size, "%s", sa->entries[idx]); +} + +static size_t syscall_arg__scnprintf_strarray(char *bf, size_t size, + struct syscall_arg *arg) +{ + return __syscall_arg__scnprintf_strarray(bf, size, "%d", arg); +} + +#define SCA_STRARRAY syscall_arg__scnprintf_strarray + +#if defined(__i386__) || defined(__x86_64__) +/* + * FIXME: Make this available to all arches as soon as the ioctl beautifier + * gets rewritten to support all arches. + */ +static size_t syscall_arg__scnprintf_strhexarray(char *bf, size_t size, + struct syscall_arg *arg) +{ + return __syscall_arg__scnprintf_strarray(bf, size, "%#x", arg); +} + +#define SCA_STRHEXARRAY syscall_arg__scnprintf_strhexarray +#endif /* defined(__i386__) || defined(__x86_64__) */ + +static size_t syscall_arg__scnprintf_fd(char *bf, size_t size, + struct syscall_arg *arg); + +#define SCA_FD syscall_arg__scnprintf_fd + +static size_t syscall_arg__scnprintf_fd_at(char *bf, size_t size, + struct syscall_arg *arg) +{ + int fd = arg->val; + + if (fd == AT_FDCWD) + return scnprintf(bf, size, "CWD"); + + return syscall_arg__scnprintf_fd(bf, size, arg); +} + +#define SCA_FDAT syscall_arg__scnprintf_fd_at + +static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size, + struct syscall_arg *arg); + +#define SCA_CLOSE_FD syscall_arg__scnprintf_close_fd + +static size_t syscall_arg__scnprintf_hex(char *bf, size_t size, + struct syscall_arg *arg) +{ + return scnprintf(bf, size, "%#lx", arg->val); +} + +#define SCA_HEX syscall_arg__scnprintf_hex + +static size_t syscall_arg__scnprintf_int(char *bf, size_t size, + struct syscall_arg *arg) +{ + return scnprintf(bf, size, "%d", arg->val); +} + +#define SCA_INT syscall_arg__scnprintf_int + +static size_t syscall_arg__scnprintf_mmap_prot(char *bf, size_t size, + struct syscall_arg *arg) +{ + int printed = 0, prot = arg->val; + + if (prot == PROT_NONE) + return scnprintf(bf, size, "NONE"); +#define P_MMAP_PROT(n) \ + if (prot & PROT_##n) { \ + printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ + prot &= ~PROT_##n; \ + } + + P_MMAP_PROT(EXEC); + P_MMAP_PROT(READ); + P_MMAP_PROT(WRITE); +#ifdef PROT_SEM + P_MMAP_PROT(SEM); +#endif + P_MMAP_PROT(GROWSDOWN); + P_MMAP_PROT(GROWSUP); +#undef P_MMAP_PROT + + if (prot) + printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", prot); + + return printed; +} + +#define SCA_MMAP_PROT syscall_arg__scnprintf_mmap_prot + +static size_t syscall_arg__scnprintf_mmap_flags(char *bf, size_t size, + struct syscall_arg *arg) +{ + int printed = 0, flags = arg->val; + +#define P_MMAP_FLAG(n) \ + if (flags & MAP_##n) { \ + printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ + flags &= ~MAP_##n; \ + } + + P_MMAP_FLAG(SHARED); + P_MMAP_FLAG(PRIVATE); +#ifdef MAP_32BIT + P_MMAP_FLAG(32BIT); +#endif + P_MMAP_FLAG(ANONYMOUS); + P_MMAP_FLAG(DENYWRITE); + P_MMAP_FLAG(EXECUTABLE); + P_MMAP_FLAG(FILE); + P_MMAP_FLAG(FIXED); + P_MMAP_FLAG(GROWSDOWN); +#ifdef MAP_HUGETLB + P_MMAP_FLAG(HUGETLB); +#endif + P_MMAP_FLAG(LOCKED); + P_MMAP_FLAG(NONBLOCK); + P_MMAP_FLAG(NORESERVE); + P_MMAP_FLAG(POPULATE); + P_MMAP_FLAG(STACK); +#ifdef MAP_UNINITIALIZED + P_MMAP_FLAG(UNINITIALIZED); +#endif +#undef P_MMAP_FLAG + + if (flags) + printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); + + return printed; +} + +#define SCA_MMAP_FLAGS syscall_arg__scnprintf_mmap_flags + +static size_t syscall_arg__scnprintf_mremap_flags(char *bf, size_t size, + struct syscall_arg *arg) +{ + int printed = 0, flags = arg->val; + +#define P_MREMAP_FLAG(n) \ + if (flags & MREMAP_##n) { \ + printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ + flags &= ~MREMAP_##n; \ + } + + P_MREMAP_FLAG(MAYMOVE); +#ifdef MREMAP_FIXED + P_MREMAP_FLAG(FIXED); +#endif +#undef P_MREMAP_FLAG + + if (flags) + printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); + + return printed; +} + +#define SCA_MREMAP_FLAGS syscall_arg__scnprintf_mremap_flags + +static size_t syscall_arg__scnprintf_madvise_behavior(char *bf, size_t size, + struct syscall_arg *arg) +{ + int behavior = arg->val; + + switch (behavior) { +#define P_MADV_BHV(n) case MADV_##n: return scnprintf(bf, size, #n) + P_MADV_BHV(NORMAL); + P_MADV_BHV(RANDOM); + P_MADV_BHV(SEQUENTIAL); + P_MADV_BHV(WILLNEED); + P_MADV_BHV(DONTNEED); + P_MADV_BHV(REMOVE); + P_MADV_BHV(DONTFORK); + P_MADV_BHV(DOFORK); + P_MADV_BHV(HWPOISON); +#ifdef MADV_SOFT_OFFLINE + P_MADV_BHV(SOFT_OFFLINE); +#endif + P_MADV_BHV(MERGEABLE); + P_MADV_BHV(UNMERGEABLE); +#ifdef MADV_HUGEPAGE + P_MADV_BHV(HUGEPAGE); +#endif +#ifdef MADV_NOHUGEPAGE + P_MADV_BHV(NOHUGEPAGE); +#endif +#ifdef MADV_DONTDUMP + P_MADV_BHV(DONTDUMP); +#endif +#ifdef MADV_DODUMP + P_MADV_BHV(DODUMP); +#endif +#undef P_MADV_PHV + default: break; + } + + return scnprintf(bf, size, "%#x", behavior); +} + +#define SCA_MADV_BHV syscall_arg__scnprintf_madvise_behavior + +static size_t syscall_arg__scnprintf_flock(char *bf, size_t size, + struct syscall_arg *arg) +{ + int printed = 0, op = arg->val; + + if (op == 0) + return scnprintf(bf, size, "NONE"); +#define P_CMD(cmd) \ + if ((op & LOCK_##cmd) == LOCK_##cmd) { \ + printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #cmd); \ + op &= ~LOCK_##cmd; \ + } + + P_CMD(SH); + P_CMD(EX); + P_CMD(NB); + P_CMD(UN); + P_CMD(MAND); + P_CMD(RW); + P_CMD(READ); + P_CMD(WRITE); +#undef P_OP + + if (op) + printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", op); + + return printed; +} + +#define SCA_FLOCK syscall_arg__scnprintf_flock + +static size_t syscall_arg__scnprintf_futex_op(char *bf, size_t size, struct syscall_arg *arg) +{ + enum syscall_futex_args { + SCF_UADDR = (1 << 0), + SCF_OP = (1 << 1), + SCF_VAL = (1 << 2), + SCF_TIMEOUT = (1 << 3), + SCF_UADDR2 = (1 << 4), + SCF_VAL3 = (1 << 5), + }; + int op = arg->val; + int cmd = op & FUTEX_CMD_MASK; + size_t printed = 0; + + switch (cmd) { +#define P_FUTEX_OP(n) case FUTEX_##n: printed = scnprintf(bf, size, #n); + P_FUTEX_OP(WAIT); arg->mask |= SCF_VAL3|SCF_UADDR2; break; + P_FUTEX_OP(WAKE); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break; + P_FUTEX_OP(FD); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break; + P_FUTEX_OP(REQUEUE); arg->mask |= SCF_VAL3|SCF_TIMEOUT; break; + P_FUTEX_OP(CMP_REQUEUE); arg->mask |= SCF_TIMEOUT; break; + P_FUTEX_OP(CMP_REQUEUE_PI); arg->mask |= SCF_TIMEOUT; break; + P_FUTEX_OP(WAKE_OP); break; + P_FUTEX_OP(LOCK_PI); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break; + P_FUTEX_OP(UNLOCK_PI); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break; + P_FUTEX_OP(TRYLOCK_PI); arg->mask |= SCF_VAL3|SCF_UADDR2; break; + P_FUTEX_OP(WAIT_BITSET); arg->mask |= SCF_UADDR2; break; + P_FUTEX_OP(WAKE_BITSET); arg->mask |= SCF_UADDR2; break; + P_FUTEX_OP(WAIT_REQUEUE_PI); break; + default: printed = scnprintf(bf, size, "%#x", cmd); break; + } + + if (op & FUTEX_PRIVATE_FLAG) + printed += scnprintf(bf + printed, size - printed, "|PRIV"); + + if (op & FUTEX_CLOCK_REALTIME) + printed += scnprintf(bf + printed, size - printed, "|CLKRT"); + + return printed; +} + +#define SCA_FUTEX_OP syscall_arg__scnprintf_futex_op + +static const char *bpf_cmd[] = { + "MAP_CREATE", "MAP_LOOKUP_ELEM", "MAP_UPDATE_ELEM", "MAP_DELETE_ELEM", + "MAP_GET_NEXT_KEY", "PROG_LOAD", +}; +static DEFINE_STRARRAY(bpf_cmd); + +static const char *epoll_ctl_ops[] = { "ADD", "DEL", "MOD", }; +static DEFINE_STRARRAY_OFFSET(epoll_ctl_ops, 1); + +static const char *itimers[] = { "REAL", "VIRTUAL", "PROF", }; +static DEFINE_STRARRAY(itimers); + +static const char *keyctl_options[] = { + "GET_KEYRING_ID", "JOIN_SESSION_KEYRING", "UPDATE", "REVOKE", "CHOWN", + "SETPERM", "DESCRIBE", "CLEAR", "LINK", "UNLINK", "SEARCH", "READ", + "INSTANTIATE", "NEGATE", "SET_REQKEY_KEYRING", "SET_TIMEOUT", + "ASSUME_AUTHORITY", "GET_SECURITY", "SESSION_TO_PARENT", "REJECT", + "INSTANTIATE_IOV", "INVALIDATE", "GET_PERSISTENT", +}; +static DEFINE_STRARRAY(keyctl_options); + +static const char *whences[] = { "SET", "CUR", "END", +#ifdef SEEK_DATA +"DATA", +#endif +#ifdef SEEK_HOLE +"HOLE", +#endif +}; +static DEFINE_STRARRAY(whences); + +static const char *fcntl_cmds[] = { + "DUPFD", "GETFD", "SETFD", "GETFL", "SETFL", "GETLK", "SETLK", + "SETLKW", "SETOWN", "GETOWN", "SETSIG", "GETSIG", "F_GETLK64", + "F_SETLK64", "F_SETLKW64", "F_SETOWN_EX", "F_GETOWN_EX", + "F_GETOWNER_UIDS", +}; +static DEFINE_STRARRAY(fcntl_cmds); + +static const char *rlimit_resources[] = { + "CPU", "FSIZE", "DATA", "STACK", "CORE", "RSS", "NPROC", "NOFILE", + "MEMLOCK", "AS", "LOCKS", "SIGPENDING", "MSGQUEUE", "NICE", "RTPRIO", + "RTTIME", +}; +static DEFINE_STRARRAY(rlimit_resources); + +static const char *sighow[] = { "BLOCK", "UNBLOCK", "SETMASK", }; +static DEFINE_STRARRAY(sighow); + +static const char *clockid[] = { + "REALTIME", "MONOTONIC", "PROCESS_CPUTIME_ID", "THREAD_CPUTIME_ID", + "MONOTONIC_RAW", "REALTIME_COARSE", "MONOTONIC_COARSE", "BOOTTIME", + "REALTIME_ALARM", "BOOTTIME_ALARM", "SGI_CYCLE", "TAI" +}; +static DEFINE_STRARRAY(clockid); + +static const char *socket_families[] = { + "UNSPEC", "LOCAL", "INET", "AX25", "IPX", "APPLETALK", "NETROM", + "BRIDGE", "ATMPVC", "X25", "INET6", "ROSE", "DECnet", "NETBEUI", + "SECURITY", "KEY", "NETLINK", "PACKET", "ASH", "ECONET", "ATMSVC", + "RDS", "SNA", "IRDA", "PPPOX", "WANPIPE", "LLC", "IB", "CAN", "TIPC", + "BLUETOOTH", "IUCV", "RXRPC", "ISDN", "PHONET", "IEEE802154", "CAIF", + "ALG", "NFC", "VSOCK", +}; +static DEFINE_STRARRAY(socket_families); + +#ifndef SOCK_TYPE_MASK +#define SOCK_TYPE_MASK 0xf +#endif + +static size_t syscall_arg__scnprintf_socket_type(char *bf, size_t size, + struct syscall_arg *arg) +{ + size_t printed; + int type = arg->val, + flags = type & ~SOCK_TYPE_MASK; + + type &= SOCK_TYPE_MASK; + /* + * Can't use a strarray, MIPS may override for ABI reasons. + */ + switch (type) { +#define P_SK_TYPE(n) case SOCK_##n: printed = scnprintf(bf, size, #n); break; + P_SK_TYPE(STREAM); + P_SK_TYPE(DGRAM); + P_SK_TYPE(RAW); + P_SK_TYPE(RDM); + P_SK_TYPE(SEQPACKET); + P_SK_TYPE(DCCP); + P_SK_TYPE(PACKET); +#undef P_SK_TYPE + default: + printed = scnprintf(bf, size, "%#x", type); + } + +#define P_SK_FLAG(n) \ + if (flags & SOCK_##n) { \ + printed += scnprintf(bf + printed, size - printed, "|%s", #n); \ + flags &= ~SOCK_##n; \ + } + + P_SK_FLAG(CLOEXEC); + P_SK_FLAG(NONBLOCK); +#undef P_SK_FLAG + + if (flags) + printed += scnprintf(bf + printed, size - printed, "|%#x", flags); + + return printed; +} + +#define SCA_SK_TYPE syscall_arg__scnprintf_socket_type + +#ifndef MSG_PROBE +#define MSG_PROBE 0x10 +#endif +#ifndef MSG_WAITFORONE +#define MSG_WAITFORONE 0x10000 +#endif +#ifndef MSG_SENDPAGE_NOTLAST +#define MSG_SENDPAGE_NOTLAST 0x20000 +#endif +#ifndef MSG_FASTOPEN +#define MSG_FASTOPEN 0x20000000 +#endif + +static size_t syscall_arg__scnprintf_msg_flags(char *bf, size_t size, + struct syscall_arg *arg) +{ + int printed = 0, flags = arg->val; + + if (flags == 0) + return scnprintf(bf, size, "NONE"); +#define P_MSG_FLAG(n) \ + if (flags & MSG_##n) { \ + printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ + flags &= ~MSG_##n; \ + } + + P_MSG_FLAG(OOB); + P_MSG_FLAG(PEEK); + P_MSG_FLAG(DONTROUTE); + P_MSG_FLAG(TRYHARD); + P_MSG_FLAG(CTRUNC); + P_MSG_FLAG(PROBE); + P_MSG_FLAG(TRUNC); + P_MSG_FLAG(DONTWAIT); + P_MSG_FLAG(EOR); + P_MSG_FLAG(WAITALL); + P_MSG_FLAG(FIN); + P_MSG_FLAG(SYN); + P_MSG_FLAG(CONFIRM); + P_MSG_FLAG(RST); + P_MSG_FLAG(ERRQUEUE); + P_MSG_FLAG(NOSIGNAL); + P_MSG_FLAG(MORE); + P_MSG_FLAG(WAITFORONE); + P_MSG_FLAG(SENDPAGE_NOTLAST); + P_MSG_FLAG(FASTOPEN); + P_MSG_FLAG(CMSG_CLOEXEC); +#undef P_MSG_FLAG + + if (flags) + printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); + + return printed; +} + +#define SCA_MSG_FLAGS syscall_arg__scnprintf_msg_flags + +static size_t syscall_arg__scnprintf_access_mode(char *bf, size_t size, + struct syscall_arg *arg) +{ + size_t printed = 0; + int mode = arg->val; + + if (mode == F_OK) /* 0 */ + return scnprintf(bf, size, "F"); +#define P_MODE(n) \ + if (mode & n##_OK) { \ + printed += scnprintf(bf + printed, size - printed, "%s", #n); \ + mode &= ~n##_OK; \ + } + + P_MODE(R); + P_MODE(W); + P_MODE(X); +#undef P_MODE + + if (mode) + printed += scnprintf(bf + printed, size - printed, "|%#x", mode); + + return printed; +} + +#define SCA_ACCMODE syscall_arg__scnprintf_access_mode + +static size_t syscall_arg__scnprintf_filename(char *bf, size_t size, + struct syscall_arg *arg); + +#define SCA_FILENAME syscall_arg__scnprintf_filename + +static size_t syscall_arg__scnprintf_open_flags(char *bf, size_t size, + struct syscall_arg *arg) +{ + int printed = 0, flags = arg->val; + + if (!(flags & O_CREAT)) + arg->mask |= 1 << (arg->idx + 1); /* Mask the mode parm */ + + if (flags == 0) + return scnprintf(bf, size, "RDONLY"); +#define P_FLAG(n) \ + if (flags & O_##n) { \ + printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ + flags &= ~O_##n; \ + } + + P_FLAG(APPEND); + P_FLAG(ASYNC); + P_FLAG(CLOEXEC); + P_FLAG(CREAT); + P_FLAG(DIRECT); + P_FLAG(DIRECTORY); + P_FLAG(EXCL); + P_FLAG(LARGEFILE); + P_FLAG(NOATIME); + P_FLAG(NOCTTY); +#ifdef O_NONBLOCK + P_FLAG(NONBLOCK); +#elif O_NDELAY + P_FLAG(NDELAY); +#endif +#ifdef O_PATH + P_FLAG(PATH); +#endif + P_FLAG(RDWR); +#ifdef O_DSYNC + if ((flags & O_SYNC) == O_SYNC) + printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", "SYNC"); + else { + P_FLAG(DSYNC); + } +#else + P_FLAG(SYNC); +#endif + P_FLAG(TRUNC); + P_FLAG(WRONLY); +#undef P_FLAG + + if (flags) + printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); + + return printed; +} + +#define SCA_OPEN_FLAGS syscall_arg__scnprintf_open_flags + +static size_t syscall_arg__scnprintf_perf_flags(char *bf, size_t size, + struct syscall_arg *arg) +{ + int printed = 0, flags = arg->val; + + if (flags == 0) + return 0; + +#define P_FLAG(n) \ + if (flags & PERF_FLAG_##n) { \ + printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ + flags &= ~PERF_FLAG_##n; \ + } + + P_FLAG(FD_NO_GROUP); + P_FLAG(FD_OUTPUT); + P_FLAG(PID_CGROUP); + P_FLAG(FD_CLOEXEC); +#undef P_FLAG + + if (flags) + printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); + + return printed; +} + +#define SCA_PERF_FLAGS syscall_arg__scnprintf_perf_flags + +static size_t syscall_arg__scnprintf_eventfd_flags(char *bf, size_t size, + struct syscall_arg *arg) +{ + int printed = 0, flags = arg->val; + + if (flags == 0) + return scnprintf(bf, size, "NONE"); +#define P_FLAG(n) \ + if (flags & EFD_##n) { \ + printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ + flags &= ~EFD_##n; \ + } + + P_FLAG(SEMAPHORE); + P_FLAG(CLOEXEC); + P_FLAG(NONBLOCK); +#undef P_FLAG + + if (flags) + printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); + + return printed; +} + +#define SCA_EFD_FLAGS syscall_arg__scnprintf_eventfd_flags + +static size_t syscall_arg__scnprintf_pipe_flags(char *bf, size_t size, + struct syscall_arg *arg) +{ + int printed = 0, flags = arg->val; + +#define P_FLAG(n) \ + if (flags & O_##n) { \ + printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ + flags &= ~O_##n; \ + } + + P_FLAG(CLOEXEC); + P_FLAG(NONBLOCK); +#undef P_FLAG + + if (flags) + printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); + + return printed; +} + +#define SCA_PIPE_FLAGS syscall_arg__scnprintf_pipe_flags + +static size_t syscall_arg__scnprintf_signum(char *bf, size_t size, struct syscall_arg *arg) +{ + int sig = arg->val; + + switch (sig) { +#define P_SIGNUM(n) case SIG##n: return scnprintf(bf, size, #n) + P_SIGNUM(HUP); + P_SIGNUM(INT); + P_SIGNUM(QUIT); + P_SIGNUM(ILL); + P_SIGNUM(TRAP); + P_SIGNUM(ABRT); + P_SIGNUM(BUS); + P_SIGNUM(FPE); + P_SIGNUM(KILL); + P_SIGNUM(USR1); + P_SIGNUM(SEGV); + P_SIGNUM(USR2); + P_SIGNUM(PIPE); + P_SIGNUM(ALRM); + P_SIGNUM(TERM); + P_SIGNUM(CHLD); + P_SIGNUM(CONT); + P_SIGNUM(STOP); + P_SIGNUM(TSTP); + P_SIGNUM(TTIN); + P_SIGNUM(TTOU); + P_SIGNUM(URG); + P_SIGNUM(XCPU); + P_SIGNUM(XFSZ); + P_SIGNUM(VTALRM); + P_SIGNUM(PROF); + P_SIGNUM(WINCH); + P_SIGNUM(IO); + P_SIGNUM(PWR); + P_SIGNUM(SYS); +#ifdef SIGEMT + P_SIGNUM(EMT); +#endif +#ifdef SIGSTKFLT + P_SIGNUM(STKFLT); +#endif +#ifdef SIGSWI + P_SIGNUM(SWI); +#endif + default: break; + } + + return scnprintf(bf, size, "%#x", sig); +} + +#define SCA_SIGNUM syscall_arg__scnprintf_signum + +#if defined(__i386__) || defined(__x86_64__) +/* + * FIXME: Make this available to all arches. + */ +#define TCGETS 0x5401 + +static const char *tioctls[] = { + "TCGETS", "TCSETS", "TCSETSW", "TCSETSF", "TCGETA", "TCSETA", "TCSETAW", + "TCSETAF", "TCSBRK", "TCXONC", "TCFLSH", "TIOCEXCL", "TIOCNXCL", + "TIOCSCTTY", "TIOCGPGRP", "TIOCSPGRP", "TIOCOUTQ", "TIOCSTI", + "TIOCGWINSZ", "TIOCSWINSZ", "TIOCMGET", "TIOCMBIS", "TIOCMBIC", + "TIOCMSET", "TIOCGSOFTCAR", "TIOCSSOFTCAR", "FIONREAD", "TIOCLINUX", + "TIOCCONS", "TIOCGSERIAL", "TIOCSSERIAL", "TIOCPKT", "FIONBIO", + "TIOCNOTTY", "TIOCSETD", "TIOCGETD", "TCSBRKP", [0x27] = "TIOCSBRK", + "TIOCCBRK", "TIOCGSID", "TCGETS2", "TCSETS2", "TCSETSW2", "TCSETSF2", + "TIOCGRS485", "TIOCSRS485", "TIOCGPTN", "TIOCSPTLCK", + "TIOCGDEV||TCGETX", "TCSETX", "TCSETXF", "TCSETXW", "TIOCSIG", + "TIOCVHANGUP", "TIOCGPKT", "TIOCGPTLCK", "TIOCGEXCL", + [0x50] = "FIONCLEX", "FIOCLEX", "FIOASYNC", "TIOCSERCONFIG", + "TIOCSERGWILD", "TIOCSERSWILD", "TIOCGLCKTRMIOS", "TIOCSLCKTRMIOS", + "TIOCSERGSTRUCT", "TIOCSERGETLSR", "TIOCSERGETMULTI", "TIOCSERSETMULTI", + "TIOCMIWAIT", "TIOCGICOUNT", [0x60] = "FIOQSIZE", +}; + +static DEFINE_STRARRAY_OFFSET(tioctls, 0x5401); +#endif /* defined(__i386__) || defined(__x86_64__) */ + +#define STRARRAY(arg, name, array) \ + .arg_scnprintf = { [arg] = SCA_STRARRAY, }, \ + .arg_parm = { [arg] = &strarray__##array, } static struct syscall_fmt { const char *name; const char *alias; + size_t (*arg_scnprintf[6])(char *bf, size_t size, struct syscall_arg *arg); + void *arg_parm[6]; bool errmsg; bool timeout; + bool hexret; } syscall_fmts[] = { - { .name = "access", .errmsg = true, }, + { .name = "access", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ + [1] = SCA_ACCMODE, /* mode */ }, }, { .name = "arch_prctl", .errmsg = true, .alias = "prctl", }, - { .name = "fstat", .errmsg = true, .alias = "newfstat", }, - { .name = "fstatat", .errmsg = true, .alias = "newfstatat", }, - { .name = "futex", .errmsg = true, }, - { .name = "open", .errmsg = true, }, + { .name = "bpf", .errmsg = true, STRARRAY(0, cmd, bpf_cmd), }, + { .name = "brk", .hexret = true, + .arg_scnprintf = { [0] = SCA_HEX, /* brk */ }, }, + { .name = "chdir", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, + { .name = "chmod", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, + { .name = "chroot", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, + { .name = "clock_gettime", .errmsg = true, STRARRAY(0, clk_id, clockid), }, + { .name = "close", .errmsg = true, + .arg_scnprintf = { [0] = SCA_CLOSE_FD, /* fd */ }, }, + { .name = "connect", .errmsg = true, }, + { .name = "creat", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, + { .name = "dup", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "dup2", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "dup3", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "epoll_ctl", .errmsg = true, STRARRAY(1, op, epoll_ctl_ops), }, + { .name = "eventfd2", .errmsg = true, + .arg_scnprintf = { [1] = SCA_EFD_FLAGS, /* flags */ }, }, + { .name = "faccessat", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ + [1] = SCA_FILENAME, /* filename */ }, }, + { .name = "fadvise64", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "fallocate", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "fchdir", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "fchmod", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "fchmodat", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ + [1] = SCA_FILENAME, /* filename */ }, }, + { .name = "fchown", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "fchownat", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ + [1] = SCA_FILENAME, /* filename */ }, }, + { .name = "fcntl", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ + [1] = SCA_STRARRAY, /* cmd */ }, + .arg_parm = { [1] = &strarray__fcntl_cmds, /* cmd */ }, }, + { .name = "fdatasync", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "flock", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ + [1] = SCA_FLOCK, /* cmd */ }, }, + { .name = "fsetxattr", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "fstat", .errmsg = true, .alias = "newfstat", + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "fstatat", .errmsg = true, .alias = "newfstatat", + .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ + [1] = SCA_FILENAME, /* filename */ }, }, + { .name = "fstatfs", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "fsync", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "ftruncate", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "futex", .errmsg = true, + .arg_scnprintf = { [1] = SCA_FUTEX_OP, /* op */ }, }, + { .name = "futimesat", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ + [1] = SCA_FILENAME, /* filename */ }, }, + { .name = "getdents", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "getdents64", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "getitimer", .errmsg = true, STRARRAY(0, which, itimers), }, + { .name = "getrlimit", .errmsg = true, STRARRAY(0, resource, rlimit_resources), }, + { .name = "getxattr", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, + { .name = "inotify_add_watch", .errmsg = true, + .arg_scnprintf = { [1] = SCA_FILENAME, /* pathname */ }, }, + { .name = "ioctl", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ +#if defined(__i386__) || defined(__x86_64__) +/* + * FIXME: Make this available to all arches. + */ + [1] = SCA_STRHEXARRAY, /* cmd */ + [2] = SCA_HEX, /* arg */ }, + .arg_parm = { [1] = &strarray__tioctls, /* cmd */ }, }, +#else + [2] = SCA_HEX, /* arg */ }, }, +#endif + { .name = "keyctl", .errmsg = true, STRARRAY(0, option, keyctl_options), }, + { .name = "kill", .errmsg = true, + .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, }, + { .name = "lchown", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, + { .name = "lgetxattr", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, + { .name = "linkat", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, }, + { .name = "listxattr", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, + { .name = "llistxattr", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, + { .name = "lremovexattr", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, + { .name = "lseek", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ + [2] = SCA_STRARRAY, /* whence */ }, + .arg_parm = { [2] = &strarray__whences, /* whence */ }, }, + { .name = "lsetxattr", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, + { .name = "lstat", .errmsg = true, .alias = "newlstat", + .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, + { .name = "lsxattr", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, + { .name = "madvise", .errmsg = true, + .arg_scnprintf = { [0] = SCA_HEX, /* start */ + [2] = SCA_MADV_BHV, /* behavior */ }, }, + { .name = "mkdir", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, + { .name = "mkdirat", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ + [1] = SCA_FILENAME, /* pathname */ }, }, + { .name = "mknod", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, + { .name = "mknodat", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ + [1] = SCA_FILENAME, /* filename */ }, }, + { .name = "mlock", .errmsg = true, + .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, }, + { .name = "mlockall", .errmsg = true, + .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, }, + { .name = "mmap", .hexret = true, + .arg_scnprintf = { [0] = SCA_HEX, /* addr */ + [2] = SCA_MMAP_PROT, /* prot */ + [3] = SCA_MMAP_FLAGS, /* flags */ + [4] = SCA_FD, /* fd */ }, }, + { .name = "mprotect", .errmsg = true, + .arg_scnprintf = { [0] = SCA_HEX, /* start */ + [2] = SCA_MMAP_PROT, /* prot */ }, }, + { .name = "mq_unlink", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* u_name */ }, }, + { .name = "mremap", .hexret = true, + .arg_scnprintf = { [0] = SCA_HEX, /* addr */ + [3] = SCA_MREMAP_FLAGS, /* flags */ + [4] = SCA_HEX, /* new_addr */ }, }, + { .name = "munlock", .errmsg = true, + .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, }, + { .name = "munmap", .errmsg = true, + .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, }, + { .name = "name_to_handle_at", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, + { .name = "newfstatat", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ + [1] = SCA_FILENAME, /* filename */ }, }, + { .name = "open", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ + [1] = SCA_OPEN_FLAGS, /* flags */ }, }, + { .name = "open_by_handle_at", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ + [2] = SCA_OPEN_FLAGS, /* flags */ }, }, + { .name = "openat", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ + [1] = SCA_FILENAME, /* filename */ + [2] = SCA_OPEN_FLAGS, /* flags */ }, }, + { .name = "perf_event_open", .errmsg = true, + .arg_scnprintf = { [1] = SCA_INT, /* pid */ + [2] = SCA_INT, /* cpu */ + [3] = SCA_FD, /* group_fd */ + [4] = SCA_PERF_FLAGS, /* flags */ }, }, + { .name = "pipe2", .errmsg = true, + .arg_scnprintf = { [1] = SCA_PIPE_FLAGS, /* flags */ }, }, { .name = "poll", .errmsg = true, .timeout = true, }, { .name = "ppoll", .errmsg = true, .timeout = true, }, - { .name = "read", .errmsg = true, }, - { .name = "recvfrom", .errmsg = true, }, + { .name = "pread", .errmsg = true, .alias = "pread64", + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "preadv", .errmsg = true, .alias = "pread", + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "prlimit64", .errmsg = true, STRARRAY(1, resource, rlimit_resources), }, + { .name = "pwrite", .errmsg = true, .alias = "pwrite64", + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "pwritev", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "read", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "readlink", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* path */ }, }, + { .name = "readlinkat", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ + [1] = SCA_FILENAME, /* pathname */ }, }, + { .name = "readv", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "recvfrom", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ + [3] = SCA_MSG_FLAGS, /* flags */ }, }, + { .name = "recvmmsg", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ + [3] = SCA_MSG_FLAGS, /* flags */ }, }, + { .name = "recvmsg", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ + [2] = SCA_MSG_FLAGS, /* flags */ }, }, + { .name = "removexattr", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, + { .name = "renameat", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, + { .name = "rmdir", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, + { .name = "rt_sigaction", .errmsg = true, + .arg_scnprintf = { [0] = SCA_SIGNUM, /* sig */ }, }, + { .name = "rt_sigprocmask", .errmsg = true, STRARRAY(0, how, sighow), }, + { .name = "rt_sigqueueinfo", .errmsg = true, + .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, }, + { .name = "rt_tgsigqueueinfo", .errmsg = true, + .arg_scnprintf = { [2] = SCA_SIGNUM, /* sig */ }, }, { .name = "select", .errmsg = true, .timeout = true, }, - { .name = "socket", .errmsg = true, }, - { .name = "stat", .errmsg = true, .alias = "newstat", }, + { .name = "sendmmsg", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ + [3] = SCA_MSG_FLAGS, /* flags */ }, }, + { .name = "sendmsg", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ + [2] = SCA_MSG_FLAGS, /* flags */ }, }, + { .name = "sendto", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ + [3] = SCA_MSG_FLAGS, /* flags */ }, }, + { .name = "setitimer", .errmsg = true, STRARRAY(0, which, itimers), }, + { .name = "setrlimit", .errmsg = true, STRARRAY(0, resource, rlimit_resources), }, + { .name = "setxattr", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, + { .name = "shutdown", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "socket", .errmsg = true, + .arg_scnprintf = { [0] = SCA_STRARRAY, /* family */ + [1] = SCA_SK_TYPE, /* type */ }, + .arg_parm = { [0] = &strarray__socket_families, /* family */ }, }, + { .name = "socketpair", .errmsg = true, + .arg_scnprintf = { [0] = SCA_STRARRAY, /* family */ + [1] = SCA_SK_TYPE, /* type */ }, + .arg_parm = { [0] = &strarray__socket_families, /* family */ }, }, + { .name = "stat", .errmsg = true, .alias = "newstat", + .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, + { .name = "statfs", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, + { .name = "swapoff", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* specialfile */ }, }, + { .name = "swapon", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* specialfile */ }, }, + { .name = "symlinkat", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, + { .name = "tgkill", .errmsg = true, + .arg_scnprintf = { [2] = SCA_SIGNUM, /* sig */ }, }, + { .name = "tkill", .errmsg = true, + .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, }, + { .name = "truncate", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* path */ }, }, + { .name = "uname", .errmsg = true, .alias = "newuname", }, + { .name = "unlinkat", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ + [1] = SCA_FILENAME, /* pathname */ }, }, + { .name = "utime", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, + { .name = "utimensat", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FDAT, /* dirfd */ + [1] = SCA_FILENAME, /* filename */ }, }, + { .name = "utimes", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, + { .name = "vmsplice", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "write", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + { .name = "writev", .errmsg = true, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, }; static int syscall_fmt__cmp(const void *name, const void *fmtp) @@ -45,8 +1306,13 @@ struct syscall { struct event_format *tp_format; + int nr_args; + struct format_field *args; const char *name; + bool is_exit; struct syscall_fmt *fmt; + size_t (**arg_scnprintf)(char *bf, size_t size, struct syscall_arg *arg); + void **arg_parm; }; static size_t fprintf_duration(unsigned long t, FILE *fp) @@ -60,62 +1326,251 @@ printed += color_fprintf(fp, PERF_COLOR_YELLOW, "%6.3f ms", duration); else printed += color_fprintf(fp, PERF_COLOR_NORMAL, "%6.3f ms", duration); - return printed + fprintf(stdout, "): "); + return printed + fprintf(fp, "): "); } +/** + * filename.ptr: The filename char pointer that will be vfs_getname'd + * filename.entry_str_pos: Where to insert the string translated from + * filename.ptr by the vfs_getname tracepoint/kprobe. + */ struct thread_trace { u64 entry_time; u64 exit_time; bool entry_pending; unsigned long nr_events; + unsigned long pfmaj, pfmin; char *entry_str; double runtime_ms; + struct { + unsigned long ptr; + short int entry_str_pos; + bool pending_open; + unsigned int namelen; + char *name; + } filename; + struct { + int max; + char **table; + } paths; + + struct intlist *syscall_stats; }; static struct thread_trace *thread_trace__new(void) { - return zalloc(sizeof(struct thread_trace)); + struct thread_trace *ttrace = zalloc(sizeof(struct thread_trace)); + + if (ttrace) + ttrace->paths.max = -1; + + ttrace->syscall_stats = intlist__new(NULL); + + return ttrace; } -static struct thread_trace *thread__trace(struct thread *thread) +static struct thread_trace *thread__trace(struct thread *thread, FILE *fp) { struct thread_trace *ttrace; if (thread == NULL) goto fail; - if (thread->priv == NULL) - thread->priv = thread_trace__new(); - - if (thread->priv == NULL) + if (thread__priv(thread) == NULL) + thread__set_priv(thread, thread_trace__new()); + + if (thread__priv(thread) == NULL) goto fail; - ttrace = thread->priv; + ttrace = thread__priv(thread); ++ttrace->nr_events; return ttrace; fail: - color_fprintf(stdout, PERF_COLOR_RED, + color_fprintf(fp, PERF_COLOR_RED, "WARNING: not enough memory, dropping samples!\n"); return NULL; } +#define TRACE_PFMAJ (1 << 0) +#define TRACE_PFMIN (1 << 1) + +static const size_t trace__entry_str_size = 2048; + struct trace { - int audit_machine; + struct perf_tool tool; + struct { + int machine; + int open_id; + } audit; struct { int max; struct syscall *table; + struct { + struct perf_evsel *sys_enter, + *sys_exit; + } events; } syscalls; - struct perf_record_opts opts; - struct machine host; + struct record_opts opts; + struct perf_evlist *evlist; + struct machine *host; + struct thread *current; u64 base_time; + FILE *output; unsigned long nr_events; - bool sched; - bool multiple_threads; + struct strlist *ev_qualifier; + struct { + size_t nr; + int *entries; + } ev_qualifier_ids; + struct intlist *tid_list; + struct intlist *pid_list; + struct { + size_t nr; + pid_t *entries; + } filter_pids; double duration_filter; double runtime_ms; + struct { + u64 vfs_getname, + proc_getname; + } stats; + bool not_ev_qualifier; + bool live; + bool full_time; + bool sched; + bool multiple_threads; + bool summary; + bool summary_only; + bool show_comm; + bool show_tool_stats; + bool trace_syscalls; + bool force; + bool vfs_getname; + int trace_pgfaults; }; +static int trace__set_fd_pathname(struct thread *thread, int fd, const char *pathname) +{ + struct thread_trace *ttrace = thread__priv(thread); + + if (fd > ttrace->paths.max) { + char **npath = realloc(ttrace->paths.table, (fd + 1) * sizeof(char *)); + + if (npath == NULL) + return -1; + + if (ttrace->paths.max != -1) { + memset(npath + ttrace->paths.max + 1, 0, + (fd - ttrace->paths.max) * sizeof(char *)); + } else { + memset(npath, 0, (fd + 1) * sizeof(char *)); + } + + ttrace->paths.table = npath; + ttrace->paths.max = fd; + } + + ttrace->paths.table[fd] = strdup(pathname); + + return ttrace->paths.table[fd] != NULL ? 0 : -1; +} + +static int thread__read_fd_path(struct thread *thread, int fd) +{ + char linkname[PATH_MAX], pathname[PATH_MAX]; + struct stat st; + int ret; + + if (thread->pid_ == thread->tid) { + scnprintf(linkname, sizeof(linkname), + "/proc/%d/fd/%d", thread->pid_, fd); + } else { + scnprintf(linkname, sizeof(linkname), + "/proc/%d/task/%d/fd/%d", thread->pid_, thread->tid, fd); + } + + if (lstat(linkname, &st) < 0 || st.st_size + 1 > (off_t)sizeof(pathname)) + return -1; + + ret = readlink(linkname, pathname, sizeof(pathname)); + + if (ret < 0 || ret > st.st_size) + return -1; + + pathname[ret] = '\0'; + return trace__set_fd_pathname(thread, fd, pathname); +} + +static const char *thread__fd_path(struct thread *thread, int fd, + struct trace *trace) +{ + struct thread_trace *ttrace = thread__priv(thread); + + if (ttrace == NULL) + return NULL; + + if (fd < 0) + return NULL; + + if ((fd > ttrace->paths.max || ttrace->paths.table[fd] == NULL)) { + if (!trace->live) + return NULL; + ++trace->stats.proc_getname; + if (thread__read_fd_path(thread, fd)) + return NULL; + } + + return ttrace->paths.table[fd]; +} + +static size_t syscall_arg__scnprintf_fd(char *bf, size_t size, + struct syscall_arg *arg) +{ + int fd = arg->val; + size_t printed = scnprintf(bf, size, "%d", fd); + const char *path = thread__fd_path(arg->thread, fd, arg->trace); + + if (path) + printed += scnprintf(bf + printed, size - printed, "<%s>", path); + + return printed; +} + +static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size, + struct syscall_arg *arg) +{ + int fd = arg->val; + size_t printed = syscall_arg__scnprintf_fd(bf, size, arg); + struct thread_trace *ttrace = thread__priv(arg->thread); + + if (ttrace && fd >= 0 && fd <= ttrace->paths.max) + zfree(&ttrace->paths.table[fd]); + + return printed; +} + +static void thread__set_filename_pos(struct thread *thread, const char *bf, + unsigned long ptr) +{ + struct thread_trace *ttrace = thread__priv(thread); + + ttrace->filename.ptr = ptr; + ttrace->filename.entry_str_pos = bf - ttrace->entry_str; +} + +static size_t syscall_arg__scnprintf_filename(char *bf, size_t size, + struct syscall_arg *arg) +{ + unsigned long ptr = arg->val; + + if (!arg->trace->vfs_getname) + return scnprintf(bf, size, "%#x", ptr); + + thread__set_filename_pos(arg->thread, bf, ptr); + return 0; +} + static bool trace__filter_duration(struct trace *trace, double t) { return t < (trace->duration_filter * NSEC_PER_MSEC); @@ -129,10 +1584,12 @@ } static bool done = false; +static bool interrupted = false; -static void sig_handler(int sig __maybe_unused) +static void sig_handler(int sig) { done = true; + interrupted = sig == SIGINT; } static size_t trace__fprintf_entry_head(struct trace *trace, struct thread *thread, @@ -141,67 +1598,93 @@ size_t printed = trace__fprintf_tstamp(trace, tstamp, fp); printed += fprintf_duration(duration, fp); - if (trace->multiple_threads) - printed += fprintf(fp, "%d ", thread->pid); + if (trace->multiple_threads) { + if (trace->show_comm) + printed += fprintf(fp, "%.14s/", thread__comm_str(thread)); + printed += fprintf(fp, "%d ", thread->tid); + } return printed; } -static int trace__process_event(struct machine *machine, union perf_event *event) +static int trace__process_event(struct trace *trace, struct machine *machine, + union perf_event *event, struct perf_sample *sample) { int ret = 0; switch (event->header.type) { case PERF_RECORD_LOST: - color_fprintf(stdout, PERF_COLOR_RED, + color_fprintf(trace->output, PERF_COLOR_RED, "LOST %" PRIu64 " events!\n", event->lost.lost); - ret = machine__process_lost_event(machine, event); + ret = machine__process_lost_event(machine, event, sample); default: - ret = machine__process_event(machine, event); + ret = machine__process_event(machine, event, sample); break; } return ret; } -static int trace__tool_process(struct perf_tool *tool __maybe_unused, +static int trace__tool_process(struct perf_tool *tool, union perf_event *event, - struct perf_sample *sample __maybe_unused, + struct perf_sample *sample, struct machine *machine) { - return trace__process_event(machine, event); + struct trace *trace = container_of(tool, struct trace, tool); + return trace__process_event(trace, machine, event, sample); } static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist) { - int err = symbol__init(); + int err = symbol__init(NULL); if (err) return err; - machine__init(&trace->host, "", HOST_KERNEL_ID); - machine__create_kernel_maps(&trace->host); - - if (perf_target__has_task(&trace->opts.target)) { - err = perf_event__synthesize_thread_map(NULL, evlist->threads, - trace__tool_process, - &trace->host); - } else { - err = perf_event__synthesize_threads(NULL, trace__tool_process, - &trace->host); - } - + trace->host = machine__new_host(); + if (trace->host == NULL) + return -ENOMEM; + + if (trace_event__register_resolver(trace->host, machine__resolve_kernel_addr) < 0) + return -errno; + + err = __machine__synthesize_threads(trace->host, &trace->tool, &trace->opts.target, + evlist->threads, trace__tool_process, false, + trace->opts.proc_map_timeout); if (err) symbol__exit(); return err; } +static int syscall__set_arg_fmts(struct syscall *sc) +{ + struct format_field *field; + int idx = 0; + + sc->arg_scnprintf = calloc(sc->nr_args, sizeof(void *)); + if (sc->arg_scnprintf == NULL) + return -1; + + if (sc->fmt) + sc->arg_parm = sc->fmt->arg_parm; + + for (field = sc->args; field; field = field->next) { + if (sc->fmt && sc->fmt->arg_scnprintf[idx]) + sc->arg_scnprintf[idx] = sc->fmt->arg_scnprintf[idx]; + else if (field->flags & FIELD_IS_POINTER) + sc->arg_scnprintf[idx] = syscall_arg__scnprintf_hex; + ++idx; + } + + return 0; +} + static int trace__read_syscall_info(struct trace *trace, int id) { char tp_name[128]; struct syscall *sc; - const char *name = audit_syscall_to_name(id, trace->audit_machine); + const char *name = audit_syscall_to_name(id, trace->audit.machine); if (name == NULL) return -1; @@ -225,38 +1708,149 @@ sc = trace->syscalls.table + id; sc->name = name; + sc->fmt = syscall_fmt__find(sc->name); snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->name); - sc->tp_format = event_format__new("syscalls", tp_name); + sc->tp_format = trace_event__tp_format("syscalls", tp_name); - if (sc->tp_format == NULL && sc->fmt && sc->fmt->alias) { + if (IS_ERR(sc->tp_format) && sc->fmt && sc->fmt->alias) { snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->fmt->alias); - sc->tp_format = event_format__new("syscalls", tp_name); + sc->tp_format = trace_event__tp_format("syscalls", tp_name); + } + + if (IS_ERR(sc->tp_format)) + return -1; + + sc->args = sc->tp_format->format.fields; + sc->nr_args = sc->tp_format->format.nr_fields; + /* drop nr field - not relevant here; does not exist on older kernels */ + if (sc->args && strcmp(sc->args->name, "nr") == 0) { + sc->args = sc->args->next; + --sc->nr_args; + } + + sc->is_exit = !strcmp(name, "exit_group") || !strcmp(name, "exit"); + + return syscall__set_arg_fmts(sc); +} + +static int trace__validate_ev_qualifier(struct trace *trace) +{ + int err = 0, i; + struct str_node *pos; + + trace->ev_qualifier_ids.nr = strlist__nr_entries(trace->ev_qualifier); + trace->ev_qualifier_ids.entries = malloc(trace->ev_qualifier_ids.nr * + sizeof(trace->ev_qualifier_ids.entries[0])); + + if (trace->ev_qualifier_ids.entries == NULL) { + fputs("Error:\tNot enough memory for allocating events qualifier ids\n", + trace->output); + err = -EINVAL; + goto out; + } + + i = 0; + + strlist__for_each(pos, trace->ev_qualifier) { + const char *sc = pos->s; + int id = audit_name_to_syscall(sc, trace->audit.machine); + + if (id < 0) { + if (err == 0) { + fputs("Error:\tInvalid syscall ", trace->output); + err = -EINVAL; + } else { + fputs(", ", trace->output); + } + + fputs(sc, trace->output); + } + + trace->ev_qualifier_ids.entries[i++] = id; } - return sc->tp_format != NULL ? 0 : -1; + if (err < 0) { + fputs("\nHint:\ttry 'perf list syscalls:sys_enter_*'" + "\nHint:\tand: 'man syscalls'\n", trace->output); + zfree(&trace->ev_qualifier_ids.entries); + trace->ev_qualifier_ids.nr = 0; + } +out: + return err; } +/* + * args is to be interpreted as a series of longs but we need to handle + * 8-byte unaligned accesses. args points to raw_data within the event + * and raw_data is guaranteed to be 8-byte unaligned because it is + * preceded by raw_size which is a u32. So we need to copy args to a temp + * variable to read it. Most notably this avoids extended load instructions + * on unaligned addresses + */ + static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size, - unsigned long *args) + unsigned char *args, struct trace *trace, + struct thread *thread) { - int i = 0; size_t printed = 0; + unsigned char *p; + unsigned long val; - if (sc->tp_format != NULL) { + if (sc->args != NULL) { struct format_field *field; + u8 bit = 1; + struct syscall_arg arg = { + .idx = 0, + .mask = 0, + .trace = trace, + .thread = thread, + }; + + for (field = sc->args; field; + field = field->next, ++arg.idx, bit <<= 1) { + if (arg.mask & bit) + continue; + + /* special care for unaligned accesses */ + p = args + sizeof(unsigned long) * arg.idx; + memcpy(&val, p, sizeof(val)); + + /* + * Suppress this argument if its value is zero and + * and we don't have a string associated in an + * strarray for it. + */ + if (val == 0 && + !(sc->arg_scnprintf && + sc->arg_scnprintf[arg.idx] == SCA_STRARRAY && + sc->arg_parm[arg.idx])) + continue; - for (field = sc->tp_format->format.fields->next; field; field = field->next) { printed += scnprintf(bf + printed, size - printed, - "%s%s: %ld", printed ? ", " : "", - field->name, args[i++]); + "%s%s: ", printed ? ", " : "", field->name); + if (sc->arg_scnprintf && sc->arg_scnprintf[arg.idx]) { + arg.val = val; + if (sc->arg_parm) + arg.parm = sc->arg_parm[arg.idx]; + printed += sc->arg_scnprintf[arg.idx](bf + printed, + size - printed, &arg); + } else { + printed += scnprintf(bf + printed, size - printed, + "%ld", val); + } } } else { + int i = 0; + while (i < 6) { + /* special care for unaligned accesses */ + p = args + sizeof(unsigned long) * i; + memcpy(&val, p, sizeof(val)); printed += scnprintf(bf + printed, size - printed, "%sarg%d: %ld", - printed ? ", " : "", i, args[i]); + printed ? ", " : "", i, val); ++i; } } @@ -265,16 +1859,30 @@ } typedef int (*tracepoint_handler)(struct trace *trace, struct perf_evsel *evsel, + union perf_event *event, struct perf_sample *sample); static struct syscall *trace__syscall_info(struct trace *trace, - struct perf_evsel *evsel, - struct perf_sample *sample) + struct perf_evsel *evsel, int id) { - int id = perf_evsel__intval(evsel, sample, "id"); if (id < 0) { - printf("Invalid syscall %d id, skipping...\n", id); + + /* + * XXX: Noticed on x86_64, reproduced as far back as 3.0.36, haven't tried + * before that, leaving at a higher verbosity level till that is + * explained. Reproduced with plain ftrace with: + * + * echo 1 > /t/events/raw_syscalls/sys_exit/enable + * grep "NR -1 " /t/trace_pipe + * + * After generating some load on the machine. + */ + if (verbose > 1) { + static u64 n; + fprintf(trace->output, "Invalid syscall %d id, skipping (%s, %" PRIu64 ") ...\n", + id, perf_evsel__name(evsel), ++n); + } return NULL; } @@ -288,72 +1896,152 @@ return &trace->syscalls.table[id]; out_cant_read: - printf("Problems reading syscall %d", id); - if (id <= trace->syscalls.max && trace->syscalls.table[id].name != NULL) - printf("(%s)", trace->syscalls.table[id].name); - puts(" information"); + if (verbose) { + fprintf(trace->output, "Problems reading syscall %d", id); + if (id <= trace->syscalls.max && trace->syscalls.table[id].name != NULL) + fprintf(trace->output, "(%s)", trace->syscalls.table[id].name); + fputs(" information\n", trace->output); + } return NULL; } +static void thread__update_stats(struct thread_trace *ttrace, + int id, struct perf_sample *sample) +{ + struct int_node *inode; + struct stats *stats; + u64 duration = 0; + + inode = intlist__findnew(ttrace->syscall_stats, id); + if (inode == NULL) + return; + + stats = inode->priv; + if (stats == NULL) { + stats = malloc(sizeof(struct stats)); + if (stats == NULL) + return; + init_stats(stats); + inode->priv = stats; + } + + if (ttrace->entry_time && sample->time > ttrace->entry_time) + duration = sample->time - ttrace->entry_time; + + update_stats(stats, duration); +} + +static int trace__printf_interrupted_entry(struct trace *trace, struct perf_sample *sample) +{ + struct thread_trace *ttrace; + u64 duration; + size_t printed; + + if (trace->current == NULL) + return 0; + + ttrace = thread__priv(trace->current); + + if (!ttrace->entry_pending) + return 0; + + duration = sample->time - ttrace->entry_time; + + printed = trace__fprintf_entry_head(trace, trace->current, duration, sample->time, trace->output); + printed += fprintf(trace->output, "%-70s) ...\n", ttrace->entry_str); + ttrace->entry_pending = false; + + return printed; +} + static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel, + union perf_event *event __maybe_unused, struct perf_sample *sample) { char *msg; void *args; size_t printed = 0; - struct thread *thread = machine__findnew_thread(&trace->host, sample->tid); - struct syscall *sc = trace__syscall_info(trace, evsel, sample); - struct thread_trace *ttrace = thread__trace(thread); + struct thread *thread; + int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1; + struct syscall *sc = trace__syscall_info(trace, evsel, id); + struct thread_trace *ttrace; - if (ttrace == NULL || sc == NULL) + if (sc == NULL) return -1; - args = perf_evsel__rawptr(evsel, sample, "args"); - if (args == NULL) { - printf("Problems reading syscall arguments\n"); - return -1; - } + thread = machine__findnew_thread(trace->host, sample->pid, sample->tid); + ttrace = thread__trace(thread, trace->output); + if (ttrace == NULL) + goto out_put; - ttrace = thread->priv; + args = perf_evsel__sc_tp_ptr(evsel, args, sample); if (ttrace->entry_str == NULL) { - ttrace->entry_str = malloc(1024); + ttrace->entry_str = malloc(trace__entry_str_size); if (!ttrace->entry_str) - return -1; + goto out_put; } + if (!trace->summary_only) + trace__printf_interrupted_entry(trace, sample); + ttrace->entry_time = sample->time; msg = ttrace->entry_str; - printed += scnprintf(msg + printed, 1024 - printed, "%s(", sc->name); + printed += scnprintf(msg + printed, trace__entry_str_size - printed, "%s(", sc->name); - printed += syscall__scnprintf_args(sc, msg + printed, 1024 - printed, args); + printed += syscall__scnprintf_args(sc, msg + printed, trace__entry_str_size - printed, + args, trace, thread); - if (!strcmp(sc->name, "exit_group") || !strcmp(sc->name, "exit")) { - if (!trace->duration_filter) { - trace__fprintf_entry_head(trace, thread, 1, ttrace->entry_time, stdout); - printf("%-70s\n", ttrace->entry_str); + if (sc->is_exit) { + if (!trace->duration_filter && !trace->summary_only) { + trace__fprintf_entry_head(trace, thread, 1, sample->time, trace->output); + fprintf(trace->output, "%-70s\n", ttrace->entry_str); } - } else + } else { ttrace->entry_pending = true; + /* See trace__vfs_getname & trace__sys_exit */ + ttrace->filename.pending_open = false; + } - return 0; + if (trace->current != thread) { + thread__put(trace->current); + trace->current = thread__get(thread); + } + err = 0; +out_put: + thread__put(thread); + return err; } static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel, + union perf_event *event __maybe_unused, struct perf_sample *sample) { - int ret; + long ret; u64 duration = 0; - struct thread *thread = machine__findnew_thread(&trace->host, sample->tid); - struct thread_trace *ttrace = thread__trace(thread); - struct syscall *sc = trace__syscall_info(trace, evsel, sample); + struct thread *thread; + int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1; + struct syscall *sc = trace__syscall_info(trace, evsel, id); + struct thread_trace *ttrace; - if (ttrace == NULL || sc == NULL) + if (sc == NULL) return -1; - ret = perf_evsel__intval(evsel, sample, "ret"); + thread = machine__findnew_thread(trace->host, sample->pid, sample->tid); + ttrace = thread__trace(thread, trace->output); + if (ttrace == NULL) + goto out_put; + + if (trace->summary) + thread__update_stats(ttrace, id, sample); - ttrace = thread->priv; + ret = perf_evsel__sc_tp_uint(evsel, ret, sample); + + if (id == trace->audit.open_id && ret >= 0 && ttrace->filename.pending_open) { + trace__set_fd_pathname(thread, ret, ttrace->filename.name); + ttrace->filename.pending_open = false; + ++trace->stats.vfs_getname; + } ttrace->exit_time = sample->time; @@ -364,95 +2052,520 @@ } else if (trace->duration_filter) goto out; - trace__fprintf_entry_head(trace, thread, duration, ttrace->entry_time, stdout); + if (trace->summary_only) + goto out; + + trace__fprintf_entry_head(trace, thread, duration, sample->time, trace->output); if (ttrace->entry_pending) { - printf("%-70s", ttrace->entry_str); + fprintf(trace->output, "%-70s", ttrace->entry_str); } else { - printf(" ... ["); - color_fprintf(stdout, PERF_COLOR_YELLOW, "continued"); - printf("]: %s()", sc->name); + fprintf(trace->output, " ... ["); + color_fprintf(trace->output, PERF_COLOR_YELLOW, "continued"); + fprintf(trace->output, "]: %s()", sc->name); } - if (ret < 0 && sc->fmt && sc->fmt->errmsg) { - char bf[256]; + if (sc->fmt == NULL) { +signed_print: + fprintf(trace->output, ") = %ld", ret); + } else if (ret < 0 && sc->fmt->errmsg) { + char bf[STRERR_BUFSIZE]; const char *emsg = strerror_r(-ret, bf, sizeof(bf)), *e = audit_errno_to_name(-ret); - printf(") = -1 %s %s", e, emsg); - } else if (ret == 0 && sc->fmt && sc->fmt->timeout) - printf(") = 0 Timeout"); + fprintf(trace->output, ") = -1 %s %s", e, emsg); + } else if (ret == 0 && sc->fmt->timeout) + fprintf(trace->output, ") = 0 Timeout"); + else if (sc->fmt->hexret) + fprintf(trace->output, ") = %#lx", ret); else - printf(") = %d", ret); + goto signed_print; - putchar('\n'); + fputc('\n', trace->output); out: ttrace->entry_pending = false; + err = 0; +out_put: + thread__put(thread); + return err; +} + +static int trace__vfs_getname(struct trace *trace, struct perf_evsel *evsel, + union perf_event *event __maybe_unused, + struct perf_sample *sample) +{ + struct thread *thread = machine__findnew_thread(trace->host, sample->pid, sample->tid); + struct thread_trace *ttrace; + size_t filename_len, entry_str_len, to_move; + ssize_t remaining_space; + char *pos; + const char *filename = perf_evsel__rawptr(evsel, sample, "pathname"); + + if (!thread) + goto out; + + ttrace = thread__priv(thread); + if (!ttrace) + goto out; + + filename_len = strlen(filename); + + if (ttrace->filename.namelen < filename_len) { + char *f = realloc(ttrace->filename.name, filename_len + 1); + + if (f == NULL) + goto out; + + ttrace->filename.namelen = filename_len; + ttrace->filename.name = f; + } + + strcpy(ttrace->filename.name, filename); + ttrace->filename.pending_open = true; + + if (!ttrace->filename.ptr) + goto out; + + entry_str_len = strlen(ttrace->entry_str); + remaining_space = trace__entry_str_size - entry_str_len - 1; /* \0 */ + if (remaining_space <= 0) + goto out; + + if (filename_len > (size_t)remaining_space) { + filename += filename_len - remaining_space; + filename_len = remaining_space; + } + + to_move = entry_str_len - ttrace->filename.entry_str_pos + 1; /* \0 */ + pos = ttrace->entry_str + ttrace->filename.entry_str_pos; + memmove(pos + filename_len, pos, to_move); + memcpy(pos, filename, filename_len); + ttrace->filename.ptr = 0; + ttrace->filename.entry_str_pos = 0; +out: return 0; } static int trace__sched_stat_runtime(struct trace *trace, struct perf_evsel *evsel, + union perf_event *event __maybe_unused, struct perf_sample *sample) { u64 runtime = perf_evsel__intval(evsel, sample, "runtime"); double runtime_ms = (double)runtime / NSEC_PER_MSEC; - struct thread *thread = machine__findnew_thread(&trace->host, sample->tid); - struct thread_trace *ttrace = thread__trace(thread); + struct thread *thread = machine__findnew_thread(trace->host, + sample->pid, + sample->tid); + struct thread_trace *ttrace = thread__trace(thread, trace->output); if (ttrace == NULL) goto out_dump; ttrace->runtime_ms += runtime_ms; trace->runtime_ms += runtime_ms; + thread__put(thread); return 0; out_dump: - printf("%s: comm=%s,pid=%u,runtime=%" PRIu64 ",vruntime=%" PRIu64 ")\n", + fprintf(trace->output, "%s: comm=%s,pid=%u,runtime=%" PRIu64 ",vruntime=%" PRIu64 ")\n", evsel->name, perf_evsel__strval(evsel, sample, "comm"), (pid_t)perf_evsel__intval(evsel, sample, "pid"), runtime, perf_evsel__intval(evsel, sample, "vruntime")); + thread__put(thread); return 0; } +static int trace__event_handler(struct trace *trace, struct perf_evsel *evsel, + union perf_event *event __maybe_unused, + struct perf_sample *sample) +{ + trace__printf_interrupted_entry(trace, sample); + trace__fprintf_tstamp(trace, sample->time, trace->output); + + if (trace->trace_syscalls) + fprintf(trace->output, "( ): "); + + fprintf(trace->output, "%s:", evsel->name); + + if (evsel->tp_format) { + event_format__fprintf(evsel->tp_format, sample->cpu, + sample->raw_data, sample->raw_size, + trace->output); + } + + fprintf(trace->output, ")\n"); + return 0; +} + +static void print_location(FILE *f, struct perf_sample *sample, + struct addr_location *al, + bool print_dso, bool print_sym) +{ + + if ((verbose || print_dso) && al->map) + fprintf(f, "%s@", al->map->dso->long_name); + + if ((verbose || print_sym) && al->sym) + fprintf(f, "%s+0x%" PRIx64, al->sym->name, + al->addr - al->sym->start); + else if (al->map) + fprintf(f, "0x%" PRIx64, al->addr); + else + fprintf(f, "0x%" PRIx64, sample->addr); +} + +static int trace__pgfault(struct trace *trace, + struct perf_evsel *evsel, + union perf_event *event, + struct perf_sample *sample) +{ + struct thread *thread; + u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; + struct addr_location al; + char map_type = 'd'; + struct thread_trace *ttrace; + int err = -1; + + thread = machine__findnew_thread(trace->host, sample->pid, sample->tid); + ttrace = thread__trace(thread, trace->output); + if (ttrace == NULL) + goto out_put; + + if (evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ) + ttrace->pfmaj++; + else + ttrace->pfmin++; + + if (trace->summary_only) + goto out; + + thread__find_addr_location(thread, cpumode, MAP__FUNCTION, + sample->ip, &al); + + trace__fprintf_entry_head(trace, thread, 0, sample->time, trace->output); + + fprintf(trace->output, "%sfault [", + evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ ? + "maj" : "min"); + + print_location(trace->output, sample, &al, false, true); + + fprintf(trace->output, "] => "); + + thread__find_addr_location(thread, cpumode, MAP__VARIABLE, + sample->addr, &al); + + if (!al.map) { + thread__find_addr_location(thread, cpumode, + MAP__FUNCTION, sample->addr, &al); + + if (al.map) + map_type = 'x'; + else + map_type = '?'; + } + + print_location(trace->output, sample, &al, true, false); + + fprintf(trace->output, " (%c%c)\n", map_type, al.level); +out: + err = 0; +out_put: + thread__put(thread); + return err; +} + +static bool skip_sample(struct trace *trace, struct perf_sample *sample) +{ + if ((trace->pid_list && intlist__find(trace->pid_list, sample->pid)) || + (trace->tid_list && intlist__find(trace->tid_list, sample->tid))) + return false; + + if (trace->pid_list || trace->tid_list) + return true; + + return false; +} + +static int trace__process_sample(struct perf_tool *tool, + union perf_event *event, + struct perf_sample *sample, + struct perf_evsel *evsel, + struct machine *machine __maybe_unused) +{ + struct trace *trace = container_of(tool, struct trace, tool); + int err = 0; + + tracepoint_handler handler = evsel->handler; + + if (skip_sample(trace, sample)) + return 0; + + if (!trace->full_time && trace->base_time == 0) + trace->base_time = sample->time; + + if (handler) { + ++trace->nr_events; + handler(trace, evsel, event, sample); + } + + return err; +} + +static int parse_target_str(struct trace *trace) +{ + if (trace->opts.target.pid) { + trace->pid_list = intlist__new(trace->opts.target.pid); + if (trace->pid_list == NULL) { + pr_err("Error parsing process id string\n"); + return -EINVAL; + } + } + + if (trace->opts.target.tid) { + trace->tid_list = intlist__new(trace->opts.target.tid); + if (trace->tid_list == NULL) { + pr_err("Error parsing thread id string\n"); + return -EINVAL; + } + } + + return 0; +} + +static int trace__record(struct trace *trace, int argc, const char **argv) +{ + unsigned int rec_argc, i, j; + const char **rec_argv; + const char * const record_args[] = { + "record", + "-R", + "-m", "1024", + "-c", "1", + }; + + const char * const sc_args[] = { "-e", }; + unsigned int sc_args_nr = ARRAY_SIZE(sc_args); + const char * const majpf_args[] = { "-e", "major-faults" }; + unsigned int majpf_args_nr = ARRAY_SIZE(majpf_args); + const char * const minpf_args[] = { "-e", "minor-faults" }; + unsigned int minpf_args_nr = ARRAY_SIZE(minpf_args); + + /* +1 is for the event string below */ + rec_argc = ARRAY_SIZE(record_args) + sc_args_nr + 1 + + majpf_args_nr + minpf_args_nr + argc; + rec_argv = calloc(rec_argc + 1, sizeof(char *)); + + if (rec_argv == NULL) + return -ENOMEM; + + j = 0; + for (i = 0; i < ARRAY_SIZE(record_args); i++) + rec_argv[j++] = record_args[i]; + + if (trace->trace_syscalls) { + for (i = 0; i < sc_args_nr; i++) + rec_argv[j++] = sc_args[i]; + + /* event string may be different for older kernels - e.g., RHEL6 */ + if (is_valid_tracepoint("raw_syscalls:sys_enter")) + rec_argv[j++] = "raw_syscalls:sys_enter,raw_syscalls:sys_exit"; + else if (is_valid_tracepoint("syscalls:sys_enter")) + rec_argv[j++] = "syscalls:sys_enter,syscalls:sys_exit"; + else { + pr_err("Neither raw_syscalls nor syscalls events exist.\n"); + return -1; + } + } + + if (trace->trace_pgfaults & TRACE_PFMAJ) + for (i = 0; i < majpf_args_nr; i++) + rec_argv[j++] = majpf_args[i]; + + if (trace->trace_pgfaults & TRACE_PFMIN) + for (i = 0; i < minpf_args_nr; i++) + rec_argv[j++] = minpf_args[i]; + + for (i = 0; i < (unsigned int)argc; i++) + rec_argv[j++] = argv[i]; + + return cmd_record(j, rec_argv, NULL); +} + +static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp); + +static bool perf_evlist__add_vfs_getname(struct perf_evlist *evlist) +{ + struct perf_evsel *evsel = perf_evsel__newtp("probe", "vfs_getname"); + + if (IS_ERR(evsel)) + return false; + + if (perf_evsel__field(evsel, "pathname") == NULL) { + perf_evsel__delete(evsel); + return false; + } + + evsel->handler = trace__vfs_getname; + perf_evlist__add(evlist, evsel); + return true; +} + +static int perf_evlist__add_pgfault(struct perf_evlist *evlist, + u64 config) +{ + struct perf_evsel *evsel; + struct perf_event_attr attr = { + .type = PERF_TYPE_SOFTWARE, + .mmap_data = 1, + }; + + attr.config = config; + attr.sample_period = 1; + + event_attr_init(&attr); + + evsel = perf_evsel__new(&attr); + if (!evsel) + return -ENOMEM; + + evsel->handler = trace__pgfault; + perf_evlist__add(evlist, evsel); + + return 0; +} + +static void trace__handle_event(struct trace *trace, union perf_event *event, struct perf_sample *sample) +{ + const u32 type = event->header.type; + struct perf_evsel *evsel; + + if (!trace->full_time && trace->base_time == 0) + trace->base_time = sample->time; + + if (type != PERF_RECORD_SAMPLE) { + trace__process_event(trace, trace->host, event, sample); + return; + } + + evsel = perf_evlist__id2evsel(trace->evlist, sample->id); + if (evsel == NULL) { + fprintf(trace->output, "Unknown tp ID %" PRIu64 ", skipping...\n", sample->id); + return; + } + + if (evsel->attr.type == PERF_TYPE_TRACEPOINT && + sample->raw_data == NULL) { + fprintf(trace->output, "%s sample with no payload for tid: %d, cpu %d, raw_size=%d, skipping...\n", + perf_evsel__name(evsel), sample->tid, + sample->cpu, sample->raw_size); + } else { + tracepoint_handler handler = evsel->handler; + handler(trace, evsel, event, sample); + } +} + +static int trace__add_syscall_newtp(struct trace *trace) +{ + int ret = -1; + struct perf_evlist *evlist = trace->evlist; + struct perf_evsel *sys_enter, *sys_exit; + + sys_enter = perf_evsel__syscall_newtp("sys_enter", trace__sys_enter); + if (sys_enter == NULL) + goto out; + + if (perf_evsel__init_sc_tp_ptr_field(sys_enter, args)) + goto out_delete_sys_enter; + + sys_exit = perf_evsel__syscall_newtp("sys_exit", trace__sys_exit); + if (sys_exit == NULL) + goto out_delete_sys_enter; + + if (perf_evsel__init_sc_tp_uint_field(sys_exit, ret)) + goto out_delete_sys_exit; + + perf_evlist__add(evlist, sys_enter); + perf_evlist__add(evlist, sys_exit); + + trace->syscalls.events.sys_enter = sys_enter; + trace->syscalls.events.sys_exit = sys_exit; + + ret = 0; +out: + return ret; + +out_delete_sys_exit: + perf_evsel__delete_priv(sys_exit); +out_delete_sys_enter: + perf_evsel__delete_priv(sys_enter); + goto out; +} + +static int trace__set_ev_qualifier_filter(struct trace *trace) +{ + int err = -1; + char *filter = asprintf_expr_inout_ints("id", !trace->not_ev_qualifier, + trace->ev_qualifier_ids.nr, + trace->ev_qualifier_ids.entries); + + if (filter == NULL) + goto out_enomem; + + if (!perf_evsel__append_filter(trace->syscalls.events.sys_enter, "&&", filter)) + err = perf_evsel__append_filter(trace->syscalls.events.sys_exit, "&&", filter); + + free(filter); +out: + return err; +out_enomem: + errno = ENOMEM; + goto out; +} + static int trace__run(struct trace *trace, int argc, const char **argv) { - struct perf_evlist *evlist = perf_evlist__new(); + struct perf_evlist *evlist = trace->evlist; struct perf_evsel *evsel; int err = -1, i; unsigned long before; const bool forks = argc > 0; + bool draining = false; - if (evlist == NULL) { - printf("Not enough memory to run!\n"); - goto out; - } + trace->live = true; - if (perf_evlist__add_newtp(evlist, "raw_syscalls", "sys_enter", trace__sys_enter) || - perf_evlist__add_newtp(evlist, "raw_syscalls", "sys_exit", trace__sys_exit)) { - printf("Couldn't read the raw_syscalls tracepoints information!\n"); - goto out_delete_evlist; + if (trace->trace_syscalls && trace__add_syscall_newtp(trace)) + goto out_error_raw_syscalls; + + if (trace->trace_syscalls) + trace->vfs_getname = perf_evlist__add_vfs_getname(evlist); + + if ((trace->trace_pgfaults & TRACE_PFMAJ) && + perf_evlist__add_pgfault(evlist, PERF_COUNT_SW_PAGE_FAULTS_MAJ)) { + goto out_error_mem; } + if ((trace->trace_pgfaults & TRACE_PFMIN) && + perf_evlist__add_pgfault(evlist, PERF_COUNT_SW_PAGE_FAULTS_MIN)) + goto out_error_mem; + if (trace->sched && perf_evlist__add_newtp(evlist, "sched", "sched_stat_runtime", - trace__sched_stat_runtime)) { - printf("Couldn't read the sched_stat_runtime tracepoint information!\n"); - goto out_delete_evlist; - } + trace__sched_stat_runtime)) + goto out_error_sched_stat_runtime; err = perf_evlist__create_maps(evlist, &trace->opts.target); if (err < 0) { - printf("Problems parsing the target to trace, check your options!\n"); + fprintf(trace->output, "Problems parsing the target to trace, check your options!\n"); goto out_delete_evlist; } err = trace__symbols_init(trace, evlist); if (err < 0) { - printf("Problems initializing symbol libraries!\n"); - goto out_delete_maps; + fprintf(trace->output, "Problems initializing symbol libraries!\n"); + goto out_delete_evlist; } perf_evlist__config(evlist, &trace->opts); @@ -462,31 +2575,57 @@ if (forks) { err = perf_evlist__prepare_workload(evlist, &trace->opts.target, - argv, false, false); + argv, false, NULL); if (err < 0) { - printf("Couldn't run the workload!\n"); - goto out_delete_maps; + fprintf(trace->output, "Couldn't run the workload!\n"); + goto out_delete_evlist; } } err = perf_evlist__open(evlist); - if (err < 0) { - printf("Couldn't create the events: %s\n", strerror(errno)); - goto out_delete_maps; - } + if (err < 0) + goto out_error_open; - err = perf_evlist__mmap(evlist, UINT_MAX, false); - if (err < 0) { - printf("Couldn't mmap the events: %s\n", strerror(errno)); - goto out_close_evlist; - } + /* + * Better not use !target__has_task() here because we need to cover the + * case where no threads were specified in the command line, but a + * workload was, and in that case we will fill in the thread_map when + * we fork the workload in perf_evlist__prepare_workload. + */ + if (trace->filter_pids.nr > 0) + err = perf_evlist__set_filter_pids(evlist, trace->filter_pids.nr, trace->filter_pids.entries); + else if (thread_map__pid(evlist->threads, 0) == -1) + err = perf_evlist__set_filter_pid(evlist, getpid()); + + if (err < 0) + goto out_error_mem; + + if (trace->ev_qualifier_ids.nr > 0) { + err = trace__set_ev_qualifier_filter(trace); + if (err < 0) + goto out_errno; + + pr_debug("event qualifier tracepoint filter: %s\n", + trace->syscalls.events.sys_exit->filter); + } + + err = perf_evlist__apply_filters(evlist, &evsel); + if (err < 0) + goto out_error_apply_filters; + + err = perf_evlist__mmap(evlist, trace->opts.mmap_pages, false); + if (err < 0) + goto out_error_mmap; - perf_evlist__enable(evlist); + if (!target__none(&trace->opts.target)) + perf_evlist__enable(evlist); if (forks) perf_evlist__start_workload(evlist); - trace->multiple_threads = evlist->threads->map[0] == -1 || evlist->threads->nr > 1; + trace->multiple_threads = thread_map__pid(evlist->threads, 0) == -1 || + evlist->threads->nr > 1 || + perf_evlist__first(evlist)->attr.inherit; again: before = trace->nr_events; @@ -494,65 +2633,197 @@ union perf_event *event; while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) { - const u32 type = event->header.type; - tracepoint_handler handler; struct perf_sample sample; ++trace->nr_events; err = perf_evlist__parse_sample(evlist, event, &sample); if (err) { - printf("Can't parse sample, err = %d, skipping...\n", err); - continue; + fprintf(trace->output, "Can't parse sample, err = %d, skipping...\n", err); + goto next_event; } - if (trace->base_time == 0) - trace->base_time = sample.time; - - if (type != PERF_RECORD_SAMPLE) { - trace__process_event(&trace->host, event); - continue; + trace__handle_event(trace, event, &sample); +next_event: + perf_evlist__mmap_consume(evlist, i); + + if (interrupted) + goto out_disable; + + if (done && !draining) { + perf_evlist__disable(evlist); + draining = true; } + } + } - evsel = perf_evlist__id2evsel(evlist, sample.id); - if (evsel == NULL) { - printf("Unknown tp ID %" PRIu64 ", skipping...\n", sample.id); - continue; - } + if (trace->nr_events == before) { + int timeout = done ? 100 : -1; - if (sample.raw_data == NULL) { - printf("%s sample with no payload for tid: %d, cpu %d, raw_size=%d, skipping...\n", - perf_evsel__name(evsel), sample.tid, - sample.cpu, sample.raw_size); - continue; - } + if (!draining && perf_evlist__poll(evlist, timeout) > 0) { + if (perf_evlist__filter_pollfd(evlist, POLLERR | POLLHUP) == 0) + draining = true; - handler = evsel->handler.func; - handler(trace, evsel, &sample); + goto again; } + } else { + goto again; } - if (trace->nr_events == before) { - if (done) - goto out_unmap_evlist; +out_disable: + thread__zput(trace->current); - poll(evlist->pollfd, evlist->nr_fds, -1); - } + perf_evlist__disable(evlist); - if (done) - perf_evlist__disable(evlist); + if (!err) { + if (trace->summary) + trace__fprintf_thread_summary(trace, trace->output); - goto again; + if (trace->show_tool_stats) { + fprintf(trace->output, "Stats:\n " + " vfs_getname : %" PRIu64 "\n" + " proc_getname: %" PRIu64 "\n", + trace->stats.vfs_getname, + trace->stats.proc_getname); + } + } -out_unmap_evlist: - perf_evlist__munmap(evlist); -out_close_evlist: - perf_evlist__close(evlist); -out_delete_maps: - perf_evlist__delete_maps(evlist); out_delete_evlist: perf_evlist__delete(evlist); + trace->evlist = NULL; + trace->live = false; + return err; +{ + char errbuf[BUFSIZ]; + +out_error_sched_stat_runtime: + tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "sched", "sched_stat_runtime"); + goto out_error; + +out_error_raw_syscalls: + tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "raw_syscalls", "sys_(enter|exit)"); + goto out_error; + +out_error_mmap: + perf_evlist__strerror_mmap(evlist, errno, errbuf, sizeof(errbuf)); + goto out_error; + +out_error_open: + perf_evlist__strerror_open(evlist, errno, errbuf, sizeof(errbuf)); + +out_error: + fprintf(trace->output, "%s\n", errbuf); + goto out_delete_evlist; + +out_error_apply_filters: + fprintf(trace->output, + "Failed to set filter \"%s\" on event %s with %d (%s)\n", + evsel->filter, perf_evsel__name(evsel), errno, + strerror_r(errno, errbuf, sizeof(errbuf))); + goto out_delete_evlist; +} +out_error_mem: + fprintf(trace->output, "Not enough memory to run!\n"); + goto out_delete_evlist; + +out_errno: + fprintf(trace->output, "errno=%d,%s\n", errno, strerror(errno)); + goto out_delete_evlist; +} + +static int trace__replay(struct trace *trace) +{ + const struct perf_evsel_str_handler handlers[] = { + { "probe:vfs_getname", trace__vfs_getname, }, + }; + struct perf_data_file file = { + .path = input_name, + .mode = PERF_DATA_MODE_READ, + .force = trace->force, + }; + struct perf_session *session; + struct perf_evsel *evsel; + int err = -1; + + trace->tool.sample = trace__process_sample; + trace->tool.mmap = perf_event__process_mmap; + trace->tool.mmap2 = perf_event__process_mmap2; + trace->tool.comm = perf_event__process_comm; + trace->tool.exit = perf_event__process_exit; + trace->tool.fork = perf_event__process_fork; + trace->tool.attr = perf_event__process_attr; + trace->tool.tracing_data = perf_event__process_tracing_data; + trace->tool.build_id = perf_event__process_build_id; + + trace->tool.ordered_events = true; + trace->tool.ordering_requires_timestamps = true; + + /* add tid to output */ + trace->multiple_threads = true; + + session = perf_session__new(&file, false, &trace->tool); + if (session == NULL) + return -1; + + if (symbol__init(&session->header.env) < 0) + goto out; + + trace->host = &session->machines.host; + + err = perf_session__set_tracepoints_handlers(session, handlers); + if (err) + goto out; + + evsel = perf_evlist__find_tracepoint_by_name(session->evlist, + "raw_syscalls:sys_enter"); + /* older kernels have syscalls tp versus raw_syscalls */ + if (evsel == NULL) + evsel = perf_evlist__find_tracepoint_by_name(session->evlist, + "syscalls:sys_enter"); + + if (evsel && + (perf_evsel__init_syscall_tp(evsel, trace__sys_enter) < 0 || + perf_evsel__init_sc_tp_ptr_field(evsel, args))) { + pr_err("Error during initialize raw_syscalls:sys_enter event\n"); + goto out; + } + + evsel = perf_evlist__find_tracepoint_by_name(session->evlist, + "raw_syscalls:sys_exit"); + if (evsel == NULL) + evsel = perf_evlist__find_tracepoint_by_name(session->evlist, + "syscalls:sys_exit"); + if (evsel && + (perf_evsel__init_syscall_tp(evsel, trace__sys_exit) < 0 || + perf_evsel__init_sc_tp_uint_field(evsel, ret))) { + pr_err("Error during initialize raw_syscalls:sys_exit event\n"); + goto out; + } + + evlist__for_each(session->evlist, evsel) { + if (evsel->attr.type == PERF_TYPE_SOFTWARE && + (evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ || + evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MIN || + evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS)) + evsel->handler = trace__pgfault; + } + + err = parse_target_str(trace); + if (err != 0) + goto out; + + setup_pager(); + + err = perf_session__process_events(session); + if (err) + pr_err("Failed to process events, error %d", err); + + else if (trace->summary) + trace__fprintf_thread_summary(trace, trace->output); + out: + perf_session__delete(session); + return err; } @@ -560,47 +2831,105 @@ { size_t printed; - printed = fprintf(fp, "\n _____________________________________________________________________\n"); - printed += fprintf(fp," __) Summary of events (__\n\n"); - printed += fprintf(fp," [ task - pid ] [ events ] [ ratio ] [ runtime ]\n"); - printed += fprintf(fp," _____________________________________________________________________\n\n"); + printed = fprintf(fp, "\n Summary of events:\n\n"); return printed; } -static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp) +static size_t thread__dump_stats(struct thread_trace *ttrace, + struct trace *trace, FILE *fp) { - size_t printed = trace__fprintf_threads_header(fp); - struct rb_node *nd; + struct stats *stats; + size_t printed = 0; + struct syscall *sc; + struct int_node *inode = intlist__first(ttrace->syscall_stats); + + if (inode == NULL) + return 0; + + printed += fprintf(fp, "\n"); - for (nd = rb_first(&trace->host.threads); nd; nd = rb_next(nd)) { - struct thread *thread = rb_entry(nd, struct thread, rb_node); - struct thread_trace *ttrace = thread->priv; - const char *color; - double ratio; - - if (ttrace == NULL) - continue; - - ratio = (double)ttrace->nr_events / trace->nr_events * 100.0; - - color = PERF_COLOR_NORMAL; - if (ratio > 50.0) - color = PERF_COLOR_RED; - else if (ratio > 25.0) - color = PERF_COLOR_GREEN; - else if (ratio > 5.0) - color = PERF_COLOR_YELLOW; - - printed += color_fprintf(fp, color, "%20s", thread->comm); - printed += fprintf(fp, " - %-5d :%11lu [", thread->pid, ttrace->nr_events); - printed += color_fprintf(fp, color, "%5.1f%%", ratio); - printed += fprintf(fp, " ] %10.3f ms\n", ttrace->runtime_ms); + printed += fprintf(fp, " syscall calls total min avg max stddev\n"); + printed += fprintf(fp, " (msec) (msec) (msec) (msec) (%%)\n"); + printed += fprintf(fp, " --------------- -------- --------- --------- --------- --------- ------\n"); + + /* each int_node is a syscall */ + while (inode) { + stats = inode->priv; + if (stats) { + double min = (double)(stats->min) / NSEC_PER_MSEC; + double max = (double)(stats->max) / NSEC_PER_MSEC; + double avg = avg_stats(stats); + double pct; + u64 n = (u64) stats->n; + + pct = avg ? 100.0 * stddev_stats(stats)/avg : 0.0; + avg /= NSEC_PER_MSEC; + + sc = &trace->syscalls.table[inode->i]; + printed += fprintf(fp, " %-15s", sc->name); + printed += fprintf(fp, " %8" PRIu64 " %9.3f %9.3f %9.3f", + n, avg * n, min, avg); + printed += fprintf(fp, " %9.3f %9.2f%%\n", max, pct); + } + + inode = intlist__next(inode); } + printed += fprintf(fp, "\n\n"); + return printed; } +/* struct used to pass data to per-thread function */ +struct summary_data { + FILE *fp; + struct trace *trace; + size_t printed; +}; + +static int trace__fprintf_one_thread(struct thread *thread, void *priv) +{ + struct summary_data *data = priv; + FILE *fp = data->fp; + size_t printed = data->printed; + struct trace *trace = data->trace; + struct thread_trace *ttrace = thread__priv(thread); + double ratio; + + if (ttrace == NULL) + return 0; + + ratio = (double)ttrace->nr_events / trace->nr_events * 100.0; + + printed += fprintf(fp, " %s (%d), ", thread__comm_str(thread), thread->tid); + printed += fprintf(fp, "%lu events, ", ttrace->nr_events); + printed += fprintf(fp, "%.1f%%", ratio); + if (ttrace->pfmaj) + printed += fprintf(fp, ", %lu majfaults", ttrace->pfmaj); + if (ttrace->pfmin) + printed += fprintf(fp, ", %lu minfaults", ttrace->pfmin); + printed += fprintf(fp, ", %.3f msec\n", ttrace->runtime_ms); + printed += thread__dump_stats(ttrace, trace, fp); + + data->printed += printed; + + return 0; +} + +static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp) +{ + struct summary_data data = { + .fp = fp, + .trace = trace + }; + data.printed = trace__fprintf_threads_header(fp); + + machine__for_each_thread(trace->host, trace__fprintf_one_thread, &data); + + return data.printed; +} + static int trace__set_duration(const struct option *opt, const char *str, int unset __maybe_unused) { @@ -610,15 +2939,94 @@ return 0; } +static int trace__set_filter_pids(const struct option *opt, const char *str, + int unset __maybe_unused) +{ + int ret = -1; + size_t i; + struct trace *trace = opt->value; + /* + * FIXME: introduce a intarray class, plain parse csv and create a + * { int nr, int entries[] } struct... + */ + struct intlist *list = intlist__new(str); + + if (list == NULL) + return -1; + + i = trace->filter_pids.nr = intlist__nr_entries(list) + 1; + trace->filter_pids.entries = calloc(i, sizeof(pid_t)); + + if (trace->filter_pids.entries == NULL) + goto out; + + trace->filter_pids.entries[0] = getpid(); + + for (i = 1; i < trace->filter_pids.nr; ++i) + trace->filter_pids.entries[i] = intlist__entry(list, i - 1)->i; + + intlist__delete(list); + ret = 0; +out: + return ret; +} + +static int trace__open_output(struct trace *trace, const char *filename) +{ + struct stat st; + + if (!stat(filename, &st) && st.st_size) { + char oldname[PATH_MAX]; + + scnprintf(oldname, sizeof(oldname), "%s.old", filename); + unlink(oldname); + rename(filename, oldname); + } + + trace->output = fopen(filename, "w"); + + return trace->output == NULL ? -errno : 0; +} + +static int parse_pagefaults(const struct option *opt, const char *str, + int unset __maybe_unused) +{ + int *trace_pgfaults = opt->value; + + if (strcmp(str, "all") == 0) + *trace_pgfaults |= TRACE_PFMAJ | TRACE_PFMIN; + else if (strcmp(str, "maj") == 0) + *trace_pgfaults |= TRACE_PFMAJ; + else if (strcmp(str, "min") == 0) + *trace_pgfaults |= TRACE_PFMIN; + else + return -1; + + return 0; +} + +static void evlist__set_evsel_handler(struct perf_evlist *evlist, void *handler) +{ + struct perf_evsel *evsel; + + evlist__for_each(evlist, evsel) + evsel->handler = handler; +} + int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused) { - const char * const trace_usage[] = { + const char *trace_usage[] = { "perf trace [] []", "perf trace [] -- []", + "perf trace record [] []", + "perf trace record [] -- []", NULL }; struct trace trace = { - .audit_machine = audit_detect_machine(), + .audit = { + .machine = audit_detect_machine(), + .open_id = audit_name_to_syscall("open", trace.audit.machine), + }, .syscalls = { . max = -1, }, @@ -629,57 +3037,156 @@ }, .user_freq = UINT_MAX, .user_interval = ULLONG_MAX, - .no_delay = true, - .mmap_pages = 1024, + .no_buffering = true, + .mmap_pages = UINT_MAX, + .proc_map_timeout = 500, }, + .output = stderr, + .show_comm = true, + .trace_syscalls = true, }; + const char *output_name = NULL; + const char *ev_qualifier_str = NULL; const struct option trace_options[] = { + OPT_CALLBACK(0, "event", &trace.evlist, "event", + "event selector. use 'perf list' to list available events", + parse_events_option), + OPT_BOOLEAN(0, "comm", &trace.show_comm, + "show the thread COMM next to its id"), + OPT_BOOLEAN(0, "tool_stats", &trace.show_tool_stats, "show tool stats"), + OPT_STRING('e', "expr", &ev_qualifier_str, "expr", "list of syscalls to trace"), + OPT_STRING('o', "output", &output_name, "file", "output file name"), + OPT_STRING('i', "input", &input_name, "file", "Analyze events in file"), OPT_STRING('p', "pid", &trace.opts.target.pid, "pid", "trace events on existing process id"), - OPT_STRING(0, "tid", &trace.opts.target.tid, "tid", + OPT_STRING('t', "tid", &trace.opts.target.tid, "tid", "trace events on existing thread id"), - OPT_BOOLEAN(0, "all-cpus", &trace.opts.target.system_wide, + OPT_CALLBACK(0, "filter-pids", &trace, "CSV list of pids", + "pids to filter (by the kernel)", trace__set_filter_pids), + OPT_BOOLEAN('a', "all-cpus", &trace.opts.target.system_wide, "system-wide collection from all CPUs"), - OPT_STRING(0, "cpu", &trace.opts.target.cpu_list, "cpu", + OPT_STRING('C', "cpu", &trace.opts.target.cpu_list, "cpu", "list of cpus to monitor"), OPT_BOOLEAN(0, "no-inherit", &trace.opts.no_inherit, "child tasks do not inherit counters"), - OPT_UINTEGER(0, "mmap-pages", &trace.opts.mmap_pages, - "number of mmap data pages"), - OPT_STRING(0, "uid", &trace.opts.target.uid_str, "user", + OPT_CALLBACK('m', "mmap-pages", &trace.opts.mmap_pages, "pages", + "number of mmap data pages", + perf_evlist__parse_mmap_pages), + OPT_STRING('u', "uid", &trace.opts.target.uid_str, "user", "user to profile"), OPT_CALLBACK(0, "duration", &trace, "float", "show only events with duration > N.M ms", trace__set_duration), OPT_BOOLEAN(0, "sched", &trace.sched, "show blocking scheduler events"), + OPT_INCR('v', "verbose", &verbose, "be more verbose"), + OPT_BOOLEAN('T', "time", &trace.full_time, + "Show full timestamp, not time relative to first start"), + OPT_BOOLEAN('s', "summary", &trace.summary_only, + "Show only syscall summary with statistics"), + OPT_BOOLEAN('S', "with-summary", &trace.summary, + "Show all syscalls and summary with statistics"), + OPT_CALLBACK_DEFAULT('F', "pf", &trace.trace_pgfaults, "all|maj|min", + "Trace pagefaults", parse_pagefaults, "maj"), + OPT_BOOLEAN(0, "syscalls", &trace.trace_syscalls, "Trace syscalls"), + OPT_BOOLEAN('f', "force", &trace.force, "don't complain, do it"), + OPT_UINTEGER(0, "proc-map-timeout", &trace.opts.proc_map_timeout, + "per thread proc mmap processing timeout in ms"), OPT_END() }; + const char * const trace_subcommands[] = { "record", NULL }; int err; char bf[BUFSIZ]; - argc = parse_options(argc, argv, trace_options, trace_usage, 0); + signal(SIGSEGV, sighandler_dump_stack); + signal(SIGFPE, sighandler_dump_stack); + + trace.evlist = perf_evlist__new(); + + if (trace.evlist == NULL) { + pr_err("Not enough memory to run!\n"); + err = -ENOMEM; + goto out; + } + + argc = parse_options_subcommand(argc, argv, trace_options, trace_subcommands, + trace_usage, PARSE_OPT_STOP_AT_NON_OPTION); - err = perf_target__validate(&trace.opts.target); + if (trace.trace_pgfaults) { + trace.opts.sample_address = true; + trace.opts.sample_time = true; + } + + if (trace.evlist->nr_entries > 0) + evlist__set_evsel_handler(trace.evlist, trace__event_handler); + + if ((argc >= 1) && (strcmp(argv[0], "record") == 0)) + return trace__record(&trace, argc-1, &argv[1]); + + /* summary_only implies summary option, but don't overwrite summary if set */ + if (trace.summary_only) + trace.summary = trace.summary_only; + + if (!trace.trace_syscalls && !trace.trace_pgfaults && + trace.evlist->nr_entries == 0 /* Was --events used? */) { + pr_err("Please specify something to trace.\n"); + return -1; + } + + if (output_name != NULL) { + err = trace__open_output(&trace, output_name); + if (err < 0) { + perror("failed to create output file"); + goto out; + } + } + + if (ev_qualifier_str != NULL) { + const char *s = ev_qualifier_str; + struct strlist_config slist_config = { + .dirname = system_path(STRACE_GROUPS_DIR), + }; + + trace.not_ev_qualifier = *s == '!'; + if (trace.not_ev_qualifier) + ++s; + trace.ev_qualifier = strlist__new(s, &slist_config); + if (trace.ev_qualifier == NULL) { + fputs("Not enough memory to parse event qualifier", + trace.output); + err = -ENOMEM; + goto out_close; + } + + err = trace__validate_ev_qualifier(&trace); + if (err) + goto out_close; + } + + err = target__validate(&trace.opts.target); if (err) { - perf_target__strerror(&trace.opts.target, err, bf, sizeof(bf)); - printf("%s", bf); - return err; + target__strerror(&trace.opts.target, err, bf, sizeof(bf)); + fprintf(trace.output, "%s", bf); + goto out_close; } - err = perf_target__parse_uid(&trace.opts.target); + err = target__parse_uid(&trace.opts.target); if (err) { - perf_target__strerror(&trace.opts.target, err, bf, sizeof(bf)); - printf("%s", bf); - return err; + target__strerror(&trace.opts.target, err, bf, sizeof(bf)); + fprintf(trace.output, "%s", bf); + goto out_close; } - if (!argc && perf_target__none(&trace.opts.target)) + if (!argc && target__none(&trace.opts.target)) trace.opts.target.system_wide = true; - err = trace__run(&trace, argc, argv); - - if (trace.sched && !err) - trace__fprintf_thread_summary(&trace, stdout); + if (input_name) + err = trace__replay(&trace); + else + err = trace__run(&trace, argc, argv); +out_close: + if (output_name != NULL) + fclose(trace.output); +out: return err; }