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| author | Adrian Hunter <adrian.hunter@intel.com> | 2019-02-06 12:39:43 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-23 20:10:11 +0100 |
| commit | fa592fc0bde56960c677f8d1a18ae8cdcc7d783b (patch) | |
| tree | 036e0bd9b391df91753cc47311d4531cf3418ca2 /tools | |
| parent | d8f691f29d9131d00610d1f8622e011b11e13319 (diff) | |
| download | linux-stable-fa592fc0bde56960c677f8d1a18ae8cdcc7d783b.tar.gz linux-stable-fa592fc0bde56960c677f8d1a18ae8cdcc7d783b.tar.bz2 linux-stable-fa592fc0bde56960c677f8d1a18ae8cdcc7d783b.zip | |
perf auxtrace: Define auxtrace record alignment
commit c3fcadf0bb765faf45d6d562246e1d08885466df upstream.
Define auxtrace record alignment so that it can be referenced elsewhere.
Note this is preparation for patch "perf intel-pt: Fix overlap calculation
for padding"
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/20190206103947.15750-2-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/util/auxtrace.c | 4 | ||||
| -rw-r--r-- | tools/perf/util/auxtrace.h | 3 |
2 files changed, 5 insertions, 2 deletions
diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c index db1511359c5e..40c93d8158b5 100644 --- a/tools/perf/util/auxtrace.c +++ b/tools/perf/util/auxtrace.c @@ -1273,9 +1273,9 @@ static int __auxtrace_mmap__read(struct auxtrace_mmap *mm, } /* padding must be written by fn() e.g. record__process_auxtrace() */ - padding = size & 7; + padding = size & (PERF_AUXTRACE_RECORD_ALIGNMENT - 1); if (padding) - padding = 8 - padding; + padding = PERF_AUXTRACE_RECORD_ALIGNMENT - padding; memset(&ev, 0, sizeof(ev)); ev.auxtrace.header.type = PERF_RECORD_AUXTRACE; diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h index 71fc3bd74299..136c5f95f9bf 100644 --- a/tools/perf/util/auxtrace.h +++ b/tools/perf/util/auxtrace.h @@ -38,6 +38,9 @@ struct record_opts; struct auxtrace_info_event; struct events_stats; +/* Auxtrace records must have the same alignment as perf event records */ +#define PERF_AUXTRACE_RECORD_ALIGNMENT 8 + enum auxtrace_type { PERF_AUXTRACE_UNKNOWN, PERF_AUXTRACE_INTEL_PT, |