diff options
| author | Dima Zavin <dima@android.com> | 2011-10-18 16:59:54 -0700 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2011-11-30 21:39:12 -0800 |
| commit | 7f1efb5833d522ee15cf41576fbf7c375171cfcc (patch) | |
| tree | b1299c6f93c2a3f024629a9a7bdd5ef82d40452c /arch/arm/kernel/process.c | |
| parent | d3556e45b9d1c461968e646abedecd081c69bdcd (diff) | |
ARM: smp: implement arch_trigger_all_cpus_backtrace using IPI
Based on a rough patch by frank.rowand@am.sony.com
Since ARM doesn't have an NMI (fiq's are not always available),
send an IPI to all other CPUs (current cpu prints the stack directly)
to capture a backtrace.
Change-Id: I8b163c8cec05d521b433ae133795865e8a33d4e2
Signed-off-by: Dima Zavin <dima@android.com>
Diffstat (limited to 'arch/arm/kernel/process.c')
| -rw-r--r-- | arch/arm/kernel/process.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 24e7e5722f1c..5360757e902f 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -63,6 +63,18 @@ static volatile int hlt_counter; #include <mach/system.h> +#ifdef CONFIG_SMP +void arch_trigger_all_cpu_backtrace(void) +{ + smp_send_all_cpu_backtrace(); +} +#else +void arch_trigger_all_cpu_backtrace(void) +{ + dump_stack(); +} +#endif + void disable_hlt(void) { hlt_counter++; |