perf_counter: allow and require one-page mmap on counting counters

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A brainfart stopped single page mmap()s working. The rest of the code
should be perfectly fine with not having any data pages.

Reported-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Orig-LKML-Reference: <1237981712.7972.812.camel@twins>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Peter Zijlstra 2009-03-25 12:48:31 +01:00 • committed by Ingo Molnar

parent 00f0ad73ac

commit 7730d86558

1 changed files with 5 additions and 1 deletions

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kernel/perf_counter.c

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