diff options
| author | Jon Medhurst <tixy@linaro.org> | 2013-04-25 14:40:22 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-04-26 11:09:32 +0100 |
| commit | 1783d4574619aea9ff5d94e6506f288547fc6737 (patch) | |
| tree | 1612586354fd64fb3857c3f6157e95f86b72b954 | |
| parent | 3eb0be304273054fd2ae34367f96127d082e310c (diff) | |
ARM: 7700/2: Make cpu_init() notrace
On resume from CPU power down any trace hooks enabled in cpu_init()
will get called before that function has done set_my_cpu_offset(),
so any use of per-cpu variables by trace hook code will cause bad
things to happen. Prevent this by marking the function notrace.
This fixes lockups/crashes seen when enabling function tracer on TC2
with the not yet mainlined cpuidle driver.
Signed-off-by: Jon Medhurst <tixy@linaro.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/kernel/setup.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index 234e339196c0..63ae04bdda1b 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -389,7 +389,7 @@ static void __init feat_v6_fixup(void) * * cpu_init sets up the per-CPU stacks. */ -void cpu_init(void) +void notrace cpu_init(void) { unsigned int cpu = smp_processor_id(); struct stack *stk = &stacks[cpu]; |