ARM: prevent tracing IPI_CPU_BACKTRACE

[sfrench/cifs-2.6.git] / arch / arm / kernel / smp.c

diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index facd4240ca02c776716a2e1e14c803c359967cc8..c93fe0f256debfd6be2885f9f5186e8082e2e671 100644 (file)
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -70,6 +70,10 @@ enum ipi_msg_type {
        IPI_CPU_STOP,
        IPI_IRQ_WORK,
        IPI_COMPLETION,
+       /*
+        * CPU_BACKTRACE is special and not included in NR_IPI
+        * or tracable with trace_ipi_*
+        */
        IPI_CPU_BACKTRACE,
        /*
         * SGI8-15 can be reserved by secure firmware, and thus may
@@ -797,7 +801,7 @@ core_initcall(register_cpufreq_notifier);
 
 static void raise_nmi(cpumask_t *mask)
 {
-       smp_cross_call(mask, IPI_CPU_BACKTRACE);
+       __smp_cross_call(mask, IPI_CPU_BACKTRACE);
 }
 
 void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self)