diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2015-05-29 15:33:38 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-06-23 23:28:37 +0200 |
| commit | 83b2ea257eb1d43e52f76d756722aeb899a2852c (patch) | |
| tree | b196e89ed77b358797956afd2091df95660d33c3 /tools | |
| parent | perf thread_map: Change map entries into a struct (diff) | |
| download | linux-83b2ea257eb1d43e52f76d756722aeb899a2852c.tar.xz linux-83b2ea257eb1d43e52f76d756722aeb899a2852c.zip | |
perf tools: Allow auxtrace data alignment
Allow auxtrace data to be a multiple of something other than page size.
That is needed for BTS where the buffer contains 24-byte records.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1432906425-9911-11-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/util/auxtrace.c | 7 | ||||
| -rw-r--r-- | tools/perf/util/auxtrace.h | 1 |
2 files changed, 8 insertions, 0 deletions
diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c index 3dab006b4a03..7e7405c9b936 100644 --- a/tools/perf/util/auxtrace.c +++ b/tools/perf/util/auxtrace.c @@ -1182,6 +1182,13 @@ static int __auxtrace_mmap__read(struct auxtrace_mmap *mm, data2 = NULL; } + if (itr->alignment) { + unsigned int unwanted = len1 % itr->alignment; + + len1 -= unwanted; + size -= unwanted; + } + /* padding must be written by fn() e.g. record__process_auxtrace() */ padding = size & 7; if (padding) diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h index a171abbe7301..471aecbc4d68 100644 --- a/tools/perf/util/auxtrace.h +++ b/tools/perf/util/auxtrace.h @@ -303,6 +303,7 @@ struct auxtrace_record { const char *str); u64 (*reference)(struct auxtrace_record *itr); int (*read_finish)(struct auxtrace_record *itr, int idx); + unsigned int alignment; }; #ifdef HAVE_AUXTRACE_SUPPORT |