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Diffstat (limited to 'arch/sh/mm')
-rw-r--r--arch/sh/mm/fault_32.c67
-rw-r--r--arch/sh/mm/init.c4
-rw-r--r--arch/sh/mm/tlb-sh3.c1
-rw-r--r--arch/sh/mm/tlbflush_64.c17
4 files changed, 47 insertions, 42 deletions
diff --git a/arch/sh/mm/fault_32.c b/arch/sh/mm/fault_32.c
index 31a33ebdef6..71925946f1e 100644
--- a/arch/sh/mm/fault_32.c
+++ b/arch/sh/mm/fault_32.c
@@ -15,12 +15,28 @@
#include <linux/mm.h>
#include <linux/hardirq.h>
#include <linux/kprobes.h>
-#include <linux/marker.h>
+#include <linux/perf_counter.h>
#include <asm/io_trapped.h>
#include <asm/system.h>
#include <asm/mmu_context.h>
#include <asm/tlbflush.h>
+static inline int notify_page_fault(struct pt_regs *regs, int trap)
+{
+ int ret = 0;
+
+#ifdef CONFIG_KPROBES
+ if (!user_mode(regs)) {
+ preempt_disable();
+ if (kprobe_running() && kprobe_fault_handler(regs, trap))
+ ret = 1;
+ preempt_enable();
+ }
+#endif
+
+ return ret;
+}
+
/*
* This routine handles page faults. It determines the address,
* and the problem, and then passes it off to one of the appropriate
@@ -87,13 +103,16 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs,
return;
}
+ mm = tsk->mm;
+
+ if (unlikely(notify_page_fault(regs, lookup_exception_vector())))
+ return;
+
/* Only enable interrupts if they were on before the fault */
- if ((regs->sr & SR_IMASK) != SR_IMASK) {
- trace_hardirqs_on();
+ if ((regs->sr & SR_IMASK) != SR_IMASK)
local_irq_enable();
- }
- mm = tsk->mm;
+ perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address);
/*
* If we're in an interrupt or have no user
@@ -133,7 +152,7 @@ good_area:
* the fault.
*/
survive:
- fault = handle_mm_fault(mm, vma, address, writeaccess);
+ fault = handle_mm_fault(mm, vma, address, writeaccess ? FAULT_FLAG_WRITE : 0);
if (unlikely(fault & VM_FAULT_ERROR)) {
if (fault & VM_FAULT_OOM)
goto out_of_memory;
@@ -141,10 +160,15 @@ survive:
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);
+ }
up_read(&mm->mmap_sem);
return;
@@ -245,25 +269,6 @@ do_sigbus:
goto no_context;
}
-static inline int notify_page_fault(struct pt_regs *regs, int trap)
-{
- int ret = 0;
-
- trace_mark(kernel_arch_trap_entry, "trap_id %d ip #p%ld",
- trap >> 5, instruction_pointer(regs));
-
-#ifdef CONFIG_KPROBES
- if (!user_mode(regs)) {
- preempt_disable();
- if (kprobe_running() && kprobe_fault_handler(regs, trap))
- ret = 1;
- preempt_enable();
- }
-#endif
-
- return ret;
-}
-
/*
* Called with interrupts disabled.
*/
@@ -276,12 +281,7 @@ asmlinkage int __kprobes __do_page_fault(struct pt_regs *regs,
pmd_t *pmd;
pte_t *pte;
pte_t entry;
- int ret = 0;
-
- if (notify_page_fault(regs, lookup_exception_vector()))
- goto out;
-
- ret = 1;
+ int ret = 1;
/*
* We don't take page faults for P1, P2, and parts of P4, these
@@ -327,6 +327,5 @@ asmlinkage int __kprobes __do_page_fault(struct pt_regs *regs,
ret = 0;
out:
- trace_mark(kernel_arch_trap_exit, MARK_NOARGS);
return ret;
}
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index ee8e6bbe882..fe532aeaa16 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -70,7 +70,7 @@ static void set_pte_phys(unsigned long addr, unsigned long phys, pgprot_t prot)
}
set_pte(pte, pfn_pte(phys >> PAGE_SHIFT, prot));
- flush_tlb_one(get_asid(), addr);
+ local_flush_tlb_one(get_asid(), addr);
}
/*
@@ -177,10 +177,8 @@ void __init paging_init(void)
free_area_init_nodes(max_zone_pfns);
-#ifdef CONFIG_SUPERH32
/* Set up the uncached fixmap */
set_fixmap_nocache(FIX_UNCACHED, __pa(&__uncached_start));
-#endif
}
static struct kcore_list kcore_mem, kcore_vmalloc;
diff --git a/arch/sh/mm/tlb-sh3.c b/arch/sh/mm/tlb-sh3.c
index 7fbfd5a11ff..17cb7c3adf2 100644
--- a/arch/sh/mm/tlb-sh3.c
+++ b/arch/sh/mm/tlb-sh3.c
@@ -18,7 +18,6 @@
#include <linux/mman.h>
#include <linux/mm.h>
#include <linux/smp.h>
-#include <linux/smp_lock.h>
#include <linux/interrupt.h>
#include <asm/system.h>
diff --git a/arch/sh/mm/tlbflush_64.c b/arch/sh/mm/tlbflush_64.c
index 7876997ba19..3ce40ea3482 100644
--- a/arch/sh/mm/tlbflush_64.c
+++ b/arch/sh/mm/tlbflush_64.c
@@ -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..
@@ -187,7 +190,7 @@ good_area:
* the fault.
*/
survive:
- fault = handle_mm_fault(mm, vma, address, writeaccess);
+ fault = handle_mm_fault(mm, vma, address, writeaccess ? FAULT_FLAG_WRITE : 0);
if (unlikely(fault & VM_FAULT_ERROR)) {
if (fault & VM_FAULT_OOM)
goto out_of_memory;
@@ -195,10 +198,16 @@ survive:
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