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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-11-08 12:15:50 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-11-08 12:15:50 +0100 |
| commit | 4e37fd4d5dfd39f547b0b00fa184a440a1e44b96 (patch) | |
| tree | 1f2a678cce5422703aa376ab3506f430d51f89da /kernel/trace/trace_stack.c | |
| parent | 7943bfaeb6bbbf595df4bd4087f5b890761c4898 (diff) | |
| parent | 0759e80b84e34a84e7e46e2b1adb528c83d84a47 (diff) | |
| download | cachepc-linux-4e37fd4d5dfd39f547b0b00fa184a440a1e44b96.tar.gz cachepc-linux-4e37fd4d5dfd39f547b0b00fa184a440a1e44b96.zip | |
Merge branch 'pm-qos' into pm-cpuidle
Diffstat (limited to 'kernel/trace/trace_stack.c')
| -rw-r--r-- | kernel/trace/trace_stack.c | 15 |
1 files changed, 0 insertions, 15 deletions
diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c index a4df67cbc711..49cb41412eec 100644 --- a/kernel/trace/trace_stack.c +++ b/kernel/trace/trace_stack.c @@ -96,23 +96,9 @@ check_stack(unsigned long ip, unsigned long *stack) if (in_nmi()) return; - /* - * There's a slight chance that we are tracing inside the - * RCU infrastructure, and rcu_irq_enter() will not work - * as expected. - */ - if (unlikely(rcu_irq_enter_disabled())) - return; - local_irq_save(flags); arch_spin_lock(&stack_trace_max_lock); - /* - * RCU may not be watching, make it see us. - * The stack trace code uses rcu_sched. - */ - rcu_irq_enter(); - /* In case another CPU set the tracer_frame on us */ if (unlikely(!frame_size)) this_size -= tracer_frame; @@ -205,7 +191,6 @@ check_stack(unsigned long ip, unsigned long *stack) } out: - rcu_irq_exit(); arch_spin_unlock(&stack_trace_max_lock); local_irq_restore(flags); } |