Commit af885de8 authored by Max Filippov's avatar Max Filippov
Browse files

xtensa: count software page fault perf events 



Signed-off-by: default avatarMax Filippov <jcmvbkbc@gmail.com>
parent ae0b7139

arch/xtensa/mm/fault.c

+7 −0
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ 
#include <linux/mm.h>

#include <linux/module.h>

#include <linux/hardirq.h>

#include <linux/perf_event.h>

#include <linux/uaccess.h>

#include <asm/mmu_context.h>

#include <asm/cacheflush.h>
@@ -142,6 +143,12 @@ void do_page_fault(struct pt_regs *regs) 
	}



	up_read(&mm->mmap_sem);

	perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);

	if (flags & VM_FAULT_MAJOR)

		perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, regs, address);

	else if (flags & VM_FAULT_MINOR)

		perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, regs, address);



	return;



	/* Something tried to access memory that isn't in our memory map..