The per-cpu trace_cpu_idle variable is used when timing *either* IRQs-off or preempt sections.
--- kernel/latency_trace.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) Index: linux-2.6/kernel/latency_trace.c =================================================================== --- linux-2.6.orig/kernel/latency_trace.c +++ linux-2.6/kernel/latency_trace.c @@ -85,9 +85,13 @@ static inline int DEBUG_WARN_ON(int cond } #endif +#if defined(CONFIG_CRITICAL_IRQSOFF_TIMING) || \ + defined(CONFIG_CRITICAL_PREEMPT_TIMING) + static DEFINE_PER_CPU(int, trace_cpu_idle); +#endif + #ifdef CONFIG_CRITICAL_IRQSOFF_TIMING # ifdef CONFIG_CRITICAL_PREEMPT_TIMING - static DEFINE_PER_CPU(int, trace_cpu_idle); # define irqs_off_preempt_count() (preempt_count() && !__get_cpu_var(trace_cpu_idle)) # else # define irqs_off_preempt_count() 0 -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
