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perf header: Swap pmu mapping numbers if needed 

Like others, the numbers can be saved in a different endian format than
a host machine.  Swap them if needed.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Robert Richter <robert.richter@amd.com>
Link: http://lkml.kernel.org/r/1346821373-31621-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2012-09-05 14:02:49 +09:00 committed by Arnaldo Carvalho de Melo
parent 618a3f1d30
commit be4a2dedf6
1 changed files with 6 additions and 0 deletions
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6
tools/perf/util/header.c
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@ -1440,6 +1440,9 @@ static void print_pmu_mappings(struct perf_header *ph, int fd, FILE *fp)
if (ret != sizeof(pmu_num))
goto error;
if (ph->needs_swap)
pmu_num = bswap_32(pmu_num);
if (!pmu_num) {
fprintf(fp, "# pmu mappings: not available\n");
return;
@ -1448,6 +1451,9 @@ static void print_pmu_mappings(struct perf_header *ph, int fd, FILE *fp)
while (pmu_num) {
if (read(fd, &type, sizeof(type)) != sizeof(type))
break;
if (ph->needs_swap)
type = bswap_32(type);
name = do_read_string(fd, ph);
if (!name)
break;