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(parent: 7da3046) | patch
ring-buffer: change WARN_ON from checking preempt_count to preemptible
authorSteven Rostedt <srostedt@redhat.com>
Thu, 7 May 2009 23:58:55 +0000 (19:58 -0400)
committerSteven Rostedt <rostedt@goodmis.org>
Fri, 8 May 2009 00:01:11 +0000 (20:01 -0400)
commit74f4fd21664148b8c454cc07bfe74e4dd51cf07b
treefa4074dff8913c25a9192c65c112de25cf07fbf4tree | snapshot
parent7da3046d6ce6ea97494020081c509b642b7016afcommit | diff
ring-buffer: change WARN_ON from checking preempt_count to preemptible

There's a WARN_ON in the ring buffer code that makes sure preemption
is disabled. It checks "!preempt_count()". But when CONFIG_PREEMPT is not
enabled, preempt_count() is always zero, and this will trigger the warning.

[ Impact: prevent false warning on non preemptible kernels ]

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
kernel/trace/ring_buffer.c diff | blob | history
Full containers within linux kernel