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authorAdrian Hunter <adrian.hunter@intel.com>2013-12-11 14:36:28 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2013-12-13 10:30:20 -0300
commitd645c442e68d24e64c46845bc8bb5d5a0a70b249 (patch)
tree51c574f7374f89b81a0126008be0bf5944e3cc05 /tools/perf/util/header.c
parent1a47245d2f3bf6276c95cd37901b562962d6ae47 (diff)
downloadop-kernel-dev-d645c442e68d24e64c46845bc8bb5d5a0a70b249.zip
op-kernel-dev-d645c442e68d24e64c46845bc8bb5d5a0a70b249.tar.gz
perf header: Allow header->data_offset to be predetermined
It will be necessary to predetermine header->data_offset to allow space for attributes that are added later. Consequently, do not change header->data_offset if it is non-zero. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1386765443-26966-17-git-send-email-alexander.shishkin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/header.c')
-rw-r--r--tools/perf/util/header.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 0bb830f..61c5421 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -2327,7 +2327,8 @@ int perf_session__write_header(struct perf_session *session,
}
}
- header->data_offset = lseek(fd, 0, SEEK_CUR);
+ if (!header->data_offset)
+ header->data_offset = lseek(fd, 0, SEEK_CUR);
header->feat_offset = header->data_offset + header->data_size;
if (at_exit) {
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