perf_counter: Fix perf_output_copy() WARN to account for overflow

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The simple reservation test in perf_output_copy() failed to take
unsigned int overflow into account, fix this.

[ Impact: fix false positive warning with more than 4GB of profiling data ]

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Peter Zijlstra 2009-05-13 21:26:19 +02:00 • committed by Ingo Molnar

parent a026dfecc0

commit 53020fe81e

1 changed files with 5 additions and 1 deletions

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kernel/perf_counter.c

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