diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2019-02-06 12:39:43 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-23 13:19:53 +0100 |
| commit | 300ef83e733e5b51821b4f9ddbf66782d171f88f (patch) | |
| tree | 65138f0c5359ab54567d8ff2e92a50c4ee624711 | |
| parent | d07d516086a40905ef27b3859bc9c5c763beb5f1 (diff) | |
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>
| -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 29d015e2d900..b87221efdf7e 100644 --- a/tools/perf/util/auxtrace.c +++ b/tools/perf/util/auxtrace.c @@ -1244,9 +1244,9 @@ 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 26fb1ee5746a..1b6963e09934 100644 --- a/tools/perf/util/auxtrace.h +++ b/tools/perf/util/auxtrace.h @@ -37,6 +37,9 @@ 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, |