ring_buffer: Fix warning while ignoring cmpxchg return value

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kernel/trace/ring_buffer.c: In function 'rb_tail_page_update':
kernel/trace/ring_buffer.c:849: warning: value computed is not used
kernel/trace/ring_buffer.c:850: warning: value computed is not used

Add "(void)"s to fix this warning, because we don't need here to handle
the fail case of cmpxchg, it's fine if an interrupt already did the
job.

Changed from V1:
  Add a comment(which is written by Steven) for it.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>

...

This commit is contained in:

Lai Jiangshan 2009-07-15 16:27:30 +08:00 • committed by Frederic Weisbecker

parent e202687927

commit da706d8bc8

1 changed files with 7 additions and 2 deletions

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kernel/trace/ring_buffer.c

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