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sh64: Hook up page fault events for software perf counters.

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sh64 can use these as well, so tie them up there as well.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2009-06-25 02:49:03 +09:00
parent 7433ab7703
commit 163b2f0ba9
1 changed files with 12 additions and 3 deletions
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15
arch/sh/mm/tlbflush_64.c
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@ -3,7 +3,7 @@
*
* Copyright (C) 2000, 2001 Paolo Alberelli
* Copyright (C) 2003 Richard Curnow (/proc/tlb, bug fixes)
* Copyright (C) 2003 Paul Mundt
* Copyright (C) 2003 - 2009 Paul Mundt
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
@ -20,6 +20,7 @@
#include <linux/mman.h>
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/perf_counter.h>
#include <linux/interrupt.h>
#include <asm/system.h>
#include <asm/io.h>
@ -115,6 +116,8 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long writeaccess,
/* Not an IO address, so reenable interrupts */
local_irq_enable();
perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address);
/*
* If we're in an interrupt or have no user
* context, we must not take the fault..
@ -195,10 +198,16 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long writeaccess,
goto do_sigbus;
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);
}
/* If we get here, the page fault has been handled. Do the TLB refill
now from the newly-setup PTE, to avoid having to fault again right