--- zzzz-none-000/linux-3.10.107/lib/dynamic_debug.c 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/lib/dynamic_debug.c 2021-02-04 17:41:59.000000000 +0000 @@ -8,6 +8,7 @@ * By Greg Banks * Copyright (c) 2008 Silicon Graphics Inc. All Rights Reserved. * Copyright (C) 2011 Bart Van Assche. All Rights Reserved. + * Copyright (C) 2013 Du, Changbin */ #define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__ @@ -24,6 +25,7 @@ #include #include #include +#include #include #include #include @@ -40,7 +42,7 @@ struct ddebug_table { struct list_head link; - char *mod_name; + const char *mod_name; unsigned int num_ddebugs; struct _ddebug *ddebugs; }; @@ -147,7 +149,8 @@ list_for_each_entry(dt, &ddebug_tables, link) { /* match against the module name */ - if (query->module && strcmp(query->module, dt->mod_name)) + if (query->module && + !match_wildcard(query->module, dt->mod_name)) continue; for (i = 0; i < dt->num_ddebugs; i++) { @@ -155,14 +158,16 @@ /* match against the source filename */ if (query->filename && - strcmp(query->filename, dp->filename) && - strcmp(query->filename, kbasename(dp->filename)) && - strcmp(query->filename, trim_prefix(dp->filename))) + !match_wildcard(query->filename, dp->filename) && + !match_wildcard(query->filename, + kbasename(dp->filename)) && + !match_wildcard(query->filename, + trim_prefix(dp->filename))) continue; /* match against the function */ if (query->function && - strcmp(query->function, dp->function)) + !match_wildcard(query->function, dp->function)) continue; /* match against the format */ @@ -263,14 +268,12 @@ */ static inline int parse_lineno(const char *str, unsigned int *val) { - char *end = NULL; BUG_ON(str == NULL); if (*str == '\0') { *val = 0; return 0; } - *val = simple_strtoul(str, &end, 10); - if (end == NULL || end == str || *end != '\0') { + if (kstrtouint(str, 10, val) < 0) { pr_err("bad line-number: %s\n", str); return -EINVAL; } @@ -309,7 +312,7 @@ struct ddebug_query *query, const char *modname) { unsigned int i; - int rc; + int rc = 0; /* check we have an even number of words */ if (nwords % 2 != 0) { @@ -343,14 +346,14 @@ } if (last) *last++ = '\0'; - if (parse_lineno(first, &query->first_lineno) < 0) { - pr_err("line-number is <0\n"); + if (parse_lineno(first, &query->first_lineno) < 0) return -EINVAL; - } if (last) { /* range - */ - if (parse_lineno(last, &query->last_lineno) - < query->first_lineno) { + if (parse_lineno(last, &query->last_lineno) < 0) + return -EINVAL; + + if (query->last_lineno < query->first_lineno) { pr_err("last-line:%d < 1st-line:%d\n", query->last_lineno, query->first_lineno); @@ -534,10 +537,9 @@ return buf; } -int __dynamic_pr_debug(struct _ddebug *descriptor, const char *fmt, ...) +void __dynamic_pr_debug(struct _ddebug *descriptor, const char *fmt, ...) { va_list args; - int res; struct va_format vaf; char buf[PREFIX_SIZE]; @@ -549,21 +551,17 @@ vaf.fmt = fmt; vaf.va = &args; - res = printk(KERN_DEBUG "%s%pV", - dynamic_emit_prefix(descriptor, buf), &vaf); + printk(KERN_DEBUG "%s%pV", dynamic_emit_prefix(descriptor, buf), &vaf); va_end(args); - - return res; } EXPORT_SYMBOL(__dynamic_pr_debug); -int __dynamic_dev_dbg(struct _ddebug *descriptor, +void __dynamic_dev_dbg(struct _ddebug *descriptor, const struct device *dev, const char *fmt, ...) { struct va_format vaf; va_list args; - int res; BUG_ON(!descriptor); BUG_ON(!fmt); @@ -574,30 +572,27 @@ vaf.va = &args; if (!dev) { - res = printk(KERN_DEBUG "(NULL device *): %pV", &vaf); + printk(KERN_DEBUG "(NULL device *): %pV", &vaf); } else { char buf[PREFIX_SIZE]; - res = dev_printk_emit(7, dev, "%s%s %s: %pV", - dynamic_emit_prefix(descriptor, buf), - dev_driver_string(dev), dev_name(dev), - &vaf); + dev_printk_emit(LOGLEVEL_DEBUG, dev, "%s%s %s: %pV", + dynamic_emit_prefix(descriptor, buf), + dev_driver_string(dev), dev_name(dev), + &vaf); } va_end(args); - - return res; } EXPORT_SYMBOL(__dynamic_dev_dbg); #ifdef CONFIG_NET -int __dynamic_netdev_dbg(struct _ddebug *descriptor, - const struct net_device *dev, const char *fmt, ...) +void __dynamic_netdev_dbg(struct _ddebug *descriptor, + const struct net_device *dev, const char *fmt, ...) { struct va_format vaf; va_list args; - int res; BUG_ON(!descriptor); BUG_ON(!fmt); @@ -610,21 +605,21 @@ if (dev && dev->dev.parent) { char buf[PREFIX_SIZE]; - res = dev_printk_emit(7, dev->dev.parent, - "%s%s %s %s: %pV", - dynamic_emit_prefix(descriptor, buf), - dev_driver_string(dev->dev.parent), - dev_name(dev->dev.parent), - netdev_name(dev), &vaf); + dev_printk_emit(LOGLEVEL_DEBUG, dev->dev.parent, + "%s%s %s %s%s: %pV", + dynamic_emit_prefix(descriptor, buf), + dev_driver_string(dev->dev.parent), + dev_name(dev->dev.parent), + netdev_name(dev), netdev_reg_state(dev), + &vaf); } else if (dev) { - res = printk(KERN_DEBUG "%s: %pV", netdev_name(dev), &vaf); + printk(KERN_DEBUG "%s%s: %pV", netdev_name(dev), + netdev_reg_state(dev), &vaf); } else { - res = printk(KERN_DEBUG "(NULL net_device): %pV", &vaf); + printk(KERN_DEBUG "(NULL net_device): %pV", &vaf); } va_end(args); - - return res; } EXPORT_SYMBOL(__dynamic_netdev_dbg); @@ -646,7 +641,7 @@ __setup("ddebug_query=", ddebug_setup_query); /* - * File_ops->write method for /dynamic_debug/conrol. Gathers the + * File_ops->write method for /dynamic_debug/control. Gathers the * command text from userspace, parses and executes it. */ #define USER_BUF_PAGE 4096 @@ -824,22 +819,9 @@ */ static int ddebug_proc_open(struct inode *inode, struct file *file) { - struct ddebug_iter *iter; - int err; - vpr_info("called\n"); - - iter = kzalloc(sizeof(*iter), GFP_KERNEL); - if (iter == NULL) - return -ENOMEM; - - err = seq_open(file, &ddebug_proc_seqops); - if (err) { - kfree(iter); - return err; - } - ((struct seq_file *)file->private_data)->private = iter; - return 0; + return seq_open_private(file, &ddebug_proc_seqops, + sizeof(struct ddebug_iter)); } static const struct file_operations ddebug_proc_fops = { @@ -859,12 +841,12 @@ const char *name) { struct ddebug_table *dt; - char *new_name; + const char *new_name; dt = kzalloc(sizeof(*dt), GFP_KERNEL); if (dt == NULL) return -ENOMEM; - new_name = kstrdup(name, GFP_KERNEL); + new_name = kstrdup_const(name, GFP_KERNEL); if (new_name == NULL) { kfree(dt); return -ENOMEM; @@ -905,7 +887,7 @@ /* handle both dyndbg and $module.dyndbg params at boot */ static int ddebug_dyndbg_boot_param_cb(char *param, char *val, - const char *unused) + const char *unused, void *arg) { vpr_info("%s=\"%s\"\n", param, val); return ddebug_dyndbg_param_cb(param, val, NULL, 0); @@ -925,7 +907,7 @@ static void ddebug_table_free(struct ddebug_table *dt) { list_del_init(&dt->link); - kfree(dt->mod_name); + kfree_const(dt->mod_name); kfree(dt); } @@ -1046,7 +1028,7 @@ */ cmdline = kstrdup(saved_command_line, GFP_KERNEL); parse_args("dyndbg params", cmdline, NULL, - 0, 0, 0, &ddebug_dyndbg_boot_param_cb); + 0, 0, 0, NULL, &ddebug_dyndbg_boot_param_cb); kfree(cmdline); return 0;