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microblaze: Do not trace cpu_relax function

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IRQsoff tracer requires to protect cpu_idle function
to get correct timing report.

Signed-off-by: Michal Simek <monstr@monstr.eu>
This commit is contained in:
Michal Simek 2010-06-10 16:02:32 +02:00
parent 6f34b08f58
commit d0f140e03e
1 changed files with 5 additions and 2 deletions
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7
arch/microblaze/kernel/process.c
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@ -76,8 +76,11 @@ __setup("hlt", hlt_setup);
void default_idle(void) void default_idle(void)
{ {
if (likely(hlt_counter)) { if (likely(hlt_counter)) {
while (!need_resched()) local_irq_disable();
cpu_relax(); stop_critical_timings();
cpu_relax();
start_critical_timings();
local_irq_enable();
} else { } else {
clear_thread_flag(TIF_POLLING_NRFLAG); clear_thread_flag(TIF_POLLING_NRFLAG);
smp_mb__after_clear_bit(); smp_mb__after_clear_bit();