--- zzzz-none-000/linux-3.10.107/arch/arm/mm/fault.c	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/arch/arm/mm/fault.c	2021-11-10 11:53:52.000000000 +0000
@@ -25,6 +25,12 @@
 #include <asm/system_misc.h>
 #include <asm/system_info.h>
 #include <asm/tlbflush.h>
+#if defined(CONFIG_AVM_SIMPLE_PROFILING)
+#include <avm/profile/profile.h>
+#endif/*--- #if defined(CONFIG_AVM_SIMPLE_PROFILING) ---*/
+#if defined(CONFIG_AVM_POWER) 
+#include <avm/power/power.h>
+#endif /*--- #if defined(CONFIG_AVM_POWER) ---*/ 
 
 #include "fault.h"
 
@@ -243,9 +249,14 @@
 		fault = VM_FAULT_BADACCESS;
 		goto out;
 	}
-
-	return handle_mm_fault(mm, vma, addr & PAGE_MASK, flags);
-
+#if defined(CONFIG_AVM_POWER)
+	avm_page_statistic_fault_get();
+#endif/*--- #if defined(CONFIG_AVM_POWER) ---*/
+	fault = handle_mm_fault(mm, vma, addr & PAGE_MASK, flags);
+#if defined(CONFIG_AVM_POWER)
+	avm_page_statistic_fault_put();
+#endif/*--- #if defined(CONFIG_AVM_POWER) ---*/
+	return fault;
 check_stack:
 	/* Don't allow expansion below FIRST_USER_ADDRESS */
 	if (vma->vm_flags & VM_GROWSDOWN &&
@@ -263,6 +274,10 @@
 	int fault, sig, code;
 	unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
 
+#if defined(CONFIG_AVM_SIMPLE_PROFILING) 
+	avm_simple_profiling_enter_irqcontext(regs->ARM_pc);
+#endif/*--- #if defined(CONFIG_AVM_SIMPLE_PROFILING)  ---*/
+
 	if (notify_page_fault(regs, fsr))
 		return 0;
 
@@ -308,8 +323,13 @@
 			goto no_context;
 #endif
 	}
-
+#if defined(CONFIG_AVM_SIMPLE_PROFILING) 
+	avm_simple_profiling_log(avm_profile_data_type_hw_irq_begin, (unsigned int)regs->ARM_pc, AVM_PROFILE_PAGE_FAULT_ID);
+#endif/*--- #if defined(CONFIG_AVM_SIMPLE_PROFILING)  ---*/
 	fault = __do_page_fault(mm, addr, fsr, flags, tsk);
+#if defined(CONFIG_AVM_SIMPLE_PROFILING) 
+	avm_simple_profiling_log(avm_profile_data_type_hw_irq_end, (unsigned int)regs->ARM_pc, AVM_PROFILE_PAGE_FAULT_ID);
+#endif/*--- #if defined(CONFIG_AVM_SIMPLE_PROFILING)  ---*/
 
 	/* If we need to retry but a fatal signal is pending, handle the
 	 * signal first. We do not need to release the mmap_sem because
@@ -431,6 +451,10 @@
 	if (addr < TASK_SIZE)
 		return do_page_fault(addr, fsr, regs);
 
+#if defined(CONFIG_AVM_SIMPLE_PROFILING) 
+	avm_simple_profiling_enter_irqcontext(regs->ARM_pc);
+#endif/*--- #if defined(CONFIG_AVM_SIMPLE_PROFILING)  ---*/
+
 	if (user_mode(regs))
 		goto bad_area;