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perf_counter: tool: handle 0-length data files

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Avoid perf-report barfing on 0-length data files.

[ Impact: fix perf-report SIGBUS ]

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: <20090501102533.196245693@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2009-05-01 12:23:18 +02:00 committed by Ingo Molnar
parent 63a809a2dc
commit 585e3374d9
1 changed files with 5 additions and 0 deletions
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5
Documentation/perf_counter/perf-report.cc
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@ -402,6 +402,11 @@ int main(int argc, char *argv[])
exit(-1);
}
if (!stat.st_size) {
fprintf(stderr, "zero-sized file, nothing to do!\n");
exit(0);
}
load_kallsyms();
remap: