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authorPaul Mundt <lethal@linux-sh.org>2007-08-01 16:19:49 +0900
committerPaul Mundt <lethal@linux-sh.org>2007-08-01 16:19:49 +0900
commitc71799433aa4d6378502f781a155321e77da73aa (patch)
tree97208ffb15aba20f3cb961585e7695cd9aec9158
parentc347d12cd1642ba193f55bdab29395d639c5efc2 (diff)
downloadop-kernel-dev-c71799433aa4d6378502f781a155321e77da73aa.zip
op-kernel-dev-c71799433aa4d6378502f781a155321e77da73aa.tar.gz
sh: Fix irqflags tracing for SH-3/4 nommu.
We were missing the trace_hardirqs_on() instrumentation in the nommu case, resync with the MMU version of the page fault handler to have this behaving consistently. Also explicitly re-enable IRQs now that the assembly code isn't doing it for us any more. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
-rw-r--r--arch/sh/mm/fault-nommu.c47
1 files changed, 15 insertions, 32 deletions
diff --git a/arch/sh/mm/fault-nommu.c b/arch/sh/mm/fault-nommu.c
index 923cb45..c6f5b51 100644
--- a/arch/sh/mm/fault-nommu.c
+++ b/arch/sh/mm/fault-nommu.c
@@ -1,47 +1,33 @@
-/*
+/*
* arch/sh/mm/fault-nommu.c
*
- * Copyright (C) 2002 Paul Mundt
+ * Copyright (C) 2002 - 2007 Paul Mundt
*
* Based on linux/arch/sh/mm/fault.c:
* Copyright (C) 1999 Niibe Yutaka
*
* Released under the terms of the GNU GPL v2.0.
*/
-
-#include <linux/signal.h>
-#include <linux/sched.h>
#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/ptrace.h>
-#include <linux/mman.h>
#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/interrupt.h>
-
+#include <linux/hardirq.h>
+#include <linux/kprobes.h>
#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm/pgalloc.h>
-#include <asm/mmu_context.h>
-#include <asm/cacheflush.h>
-
-#if defined(CONFIG_SH_KGDB)
+#include <asm/ptrace.h>
#include <asm/kgdb.h>
-#endif
-
-extern void die(const char *,struct pt_regs *,long);
/*
* This routine handles page faults. It determines the address,
* and the problem, and then passes it off to one of the appropriate
* routines.
*/
-asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long writeaccess,
- unsigned long address)
+asmlinkage void __kprobes do_page_fault(struct pt_regs *regs,
+ unsigned long writeaccess,
+ unsigned long address)
{
+ trace_hardirqs_on();
+ local_irq_enable();
+
#if defined(CONFIG_SH_KGDB)
if (kgdb_nofault && kgdb_bus_err_hook)
kgdb_bus_err_hook();
@@ -65,17 +51,14 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long writeaccess,
do_exit(SIGKILL);
}
-asmlinkage int __do_page_fault(struct pt_regs *regs, unsigned long writeaccess,
- unsigned long address)
+asmlinkage int __kprobes __do_page_fault(struct pt_regs *regs,
+ unsigned long writeaccess,
+ unsigned long address)
{
#if defined(CONFIG_SH_KGDB)
if (kgdb_nofault && kgdb_bus_err_hook)
kgdb_bus_err_hook();
#endif
- if (address >= TASK_SIZE)
- return 1;
-
- return 0;
+ return (address >= TASK_SIZE);
}
-
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