Commit bde69af2 authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
Browse files

[S390] Wire up page fault events for software perf counters.


Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 5c0b912e
......@@ -10,6 +10,7 @@
* Copyright (C) 1995 Linus Torvalds
*/
#include <linux/perf_counter.h>
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/kernel.h>
......@@ -305,7 +306,7 @@ do_exception(struct pt_regs *regs, unsigned long error_code, int write)
* interrupts again and then search the VMAs
*/
local_irq_enable();
perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address);
down_read(&mm->mmap_sem);
si_code = SEGV_MAPERR;
......@@ -363,11 +364,15 @@ good_area:
}
BUG();
}
if (fault & VM_FAULT_MAJOR)
if (fault & VM_FAULT_MAJOR) {
tsk->maj_flt++;
else
perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0,
regs, address);
} else {
tsk->min_flt++;
perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0,
regs, address);
}
up_read(&mm->mmap_sem);
/*
* The instruction that caused the program check will
......
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