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authorAndre Draszik <andre.draszik@st.com>2009-08-24 14:38:27 +0900
committerPaul Mundt <lethal@linux-sh.org>2009-08-24 14:38:27 +0900
commit9a4af027a03e10e97f56081cd7dd1fda5282bd9c (patch)
treedb1c974bc46f8781c877fc6382b3113ff53a67d8
parentc3144fc46f987413df10e83659f0bf1aad76f79e (diff)
sh: ratelimit unaligned fixups
This patch makes sure we see messages about unaligned access fixups every now and then. Else especially userspace apps suffering from bad programming won't ever be noticed... Signed-off by: Andre Draszik <andre.draszik@st.com> Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
-rw-r--r--arch/sh/kernel/traps_32.c17
1 files changed, 4 insertions, 13 deletions
diff --git a/arch/sh/kernel/traps_32.c b/arch/sh/kernel/traps_32.c
index 05a04b6df84..866c7c7a823 100644
--- a/arch/sh/kernel/traps_32.c
+++ b/arch/sh/kernel/traps_32.c
@@ -359,13 +359,6 @@ static inline int handle_delayslot(struct pt_regs *regs,
#define SH_PC_8BIT_OFFSET(instr) ((((signed char)(instr))*2) + 4)
#define SH_PC_12BIT_OFFSET(instr) ((((signed short)(instr<<4))>>3) + 4)
-/*
- * XXX: SH-2A needs this too, but it needs an overhaul thanks to mixed 32-bit
- * opcodes..
- */
-
-static int handle_unaligned_notify_count = 10;
-
int handle_unaligned_access(insn_size_t instruction, struct pt_regs *regs,
struct mem_access *ma)
{
@@ -375,15 +368,13 @@ int handle_unaligned_access(insn_size_t instruction, struct pt_regs *regs,
index = (instruction>>8)&15; /* 0x0F00 */
rm = regs->regs[index];
- /* shout about the first ten userspace fixups */
- if (user_mode(regs) && handle_unaligned_notify_count>0) {
- handle_unaligned_notify_count--;
-
- printk(KERN_NOTICE "Fixing up unaligned userspace access "
+ /* shout about fixups */
+ if (printk_ratelimit())
+ printk(KERN_NOTICE "Fixing up unaligned %s access "
"in \"%s\" pid=%d pc=0x%p ins=0x%04hx\n",
+ user_mode(regs) ? "userspace" : "kernel",
current->comm, task_pid_nr(current),
(void *)regs->pc, instruction);
- }
ret = -EFAULT;
switch (instruction&0xF000) {