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perf tools: Fix cross-endian analysis

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Trying to analyze a big endian data file on little endian system fails
with the error:

  0xa9b40 [0x70]: failed to process type: 9

The problem is that header parsing is not done correctly because the
file attributes are not swapped. Make it so. With this patch able to
analyze a sparc64 data file on x86_64.

Signed-off-by: David Ahern <[email protected]>
Acked-by: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
David Ahern 2015-04-09 16:15:46 -04:00 • committed by Arnaldo Carvalho de Melo
commit 1060ab857f
1 changed files with 4 additions and 1 deletions
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5
tools/perf/util/header.c
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@ -2504,8 +2504,11 @@ int perf_session__read_header(struct perf_session *session)
if (read_attr(fd, header, &f_attr) < 0)
goto out_errno;
if (header->needs_swap)
if (header->needs_swap) {
f_attr.ids.size = bswap_64(f_attr.ids.size);
f_attr.ids.offset = bswap_64(f_attr.ids.offset);
perf_event__attr_swap(&f_attr.attr);
}
tmp = lseek(fd, 0, SEEK_CUR);
evsel = perf_evsel__new(&f_attr.attr);