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authorMichal Simek <monstr@monstr.eu>2010-06-10 16:02:32 +0200
committerMichal Simek <monstr@monstr.eu>2010-08-04 10:22:36 +0200
commitd0f140e03e38dc553a0bb61611c15fcede671f23 (patch)
tree0d4cdc4e6d48b209ec9c6f65de73889c1d8454b1 /arch/microblaze/kernel
parent6f34b08f58f5097bb408e188e09cda75e61ee513 (diff)
microblaze: Do not trace cpu_relax function
IRQsoff tracer requires to protect cpu_idle function to get correct timing report. Signed-off-by: Michal Simek <monstr@monstr.eu>
Diffstat (limited to 'arch/microblaze/kernel')
-rw-r--r--arch/microblaze/kernel/process.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/microblaze/kernel/process.c b/arch/microblaze/kernel/process.c
index 09bed44dfcd3..ba7c4b16ed35 100644
--- a/arch/microblaze/kernel/process.c
+++ b/arch/microblaze/kernel/process.c
@@ -76,8 +76,11 @@ __setup("hlt", hlt_setup);
void default_idle(void)
{
if (likely(hlt_counter)) {
- while (!need_resched())
- cpu_relax();
+ local_irq_disable();
+ stop_critical_timings();
+ cpu_relax();
+ start_critical_timings();
+ local_irq_enable();
} else {
clear_thread_flag(TIF_POLLING_NRFLAG);
smp_mb__after_clear_bit();