diff options
| author | Dave Airlie <airlied@redhat.com> | 2017-10-03 09:35:04 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2017-10-03 09:35:04 +1000 |
| commit | ebec44a2456fbe5fe18aae88f6010f6878f0cb4a (patch) | |
| tree | 427734722bdf3e807333329f33a6dbd6e95ec747 /kernel/trace/trace_stack.c | |
| parent | 659333de48268550b5f09fcd45f76459d737b946 (diff) | |
| parent | 9e66317d3c92ddaab330c125dfe9d06eee268aff (diff) | |
| download | linux-ebec44a2456fbe5fe18aae88f6010f6878f0cb4a.tar.gz linux-ebec44a2456fbe5fe18aae88f6010f6878f0cb4a.tar.bz2 linux-ebec44a2456fbe5fe18aae88f6010f6878f0cb4a.zip | |
BackMerge tag 'v4.14-rc3' into drm-next
Linux 4.14-rc3
Requested by Daniel for the tracing build fix in fixes.
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); } |