X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Farch%2Fxtensa%2Fmm%2Ffault.c;h=c9784c1b18d8c6223afe359e4e4405b430b91780;hb=e09b41010ba33a20a87472ee821fa407a5b8da36;hp=83a44a33cfa11221f99ba5f8d836e02a0c4c9f92;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git

diff --git a/kernel/arch/xtensa/mm/fault.c b/kernel/arch/xtensa/mm/fault.c
index 83a44a33c..c9784c1b1 100644
--- a/kernel/arch/xtensa/mm/fault.c
+++ b/kernel/arch/xtensa/mm/fault.c
@@ -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..