xtensa: count software page fault perf events (af885de8) · Commits · 戴 / test

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 @@ good_area:
		}

		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..