diff options
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/smp.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 7c467c5..b263613 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -749,6 +749,15 @@ core_initcall(register_cpufreq_notifier); static void raise_nmi(cpumask_t *mask) { + /* + * Generate the backtrace directly if we are running in a calling + * context that is not preemptible by the backtrace IPI. Note + * that nmi_cpu_backtrace() automatically removes the current cpu + * from mask. + */ + if (cpumask_test_cpu(smp_processor_id(), mask) && irqs_disabled()) + nmi_cpu_backtrace(NULL); + smp_cross_call(mask, IPI_CPU_BACKTRACE); } |
