diff options
author | Andrew Vagin <avagin@openvz.org> | 2011-11-28 12:03:31 +0300 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2011-12-12 08:44:00 -0200 |
commit | 74eec26facadbe6dbc0621bc862892c915c4534f (patch) | |
tree | 65dfed706164778235d8891843d8e0245c9cd3b3 | |
parent | 317df650c588bb9091b1fa0b5d726fe485aad88e (diff) | |
download | linux-74eec26facadbe6dbc0621bc862892c915c4534f.tar.bz2 |
perf tools: Add ability to synthesize event according to a sample
It's the counterpart of perf_session__parse_sample.
v2: fixed mistakes found by David Ahern.
v3: s/data/sample/
s/perf_event__change_sample/perf_event__synthesize_sample
Reviewed-by: David Ahern <dsahern@gmail.com>
Cc: Arun Sharma <asharma@fb.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: devel@openvz.org
Link: http://lkml.kernel.org/r/1323266161-394927-3-git-send-email-avagin@openvz.org
Signed-off-by: Andrew Vagin <avagin@openvz.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r-- | tools/perf/util/event.h | 3 | ||||
-rw-r--r-- | tools/perf/util/evsel.c | 79 | ||||
-rw-r--r-- | tools/perf/util/session.h | 8 |
3 files changed, 90 insertions, 0 deletions
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h index 0d80201ce844..cbdeaad9c5e5 100644 --- a/tools/perf/util/event.h +++ b/tools/perf/util/event.h @@ -199,6 +199,9 @@ const char *perf_event__name(unsigned int id); int perf_event__parse_sample(const union perf_event *event, u64 type, int sample_size, bool sample_id_all, struct perf_sample *sample, bool swapped); +int perf_event__synthesize_sample(union perf_event *event, u64 type, + const struct perf_sample *sample, + bool swapped); size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp); size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp); diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index ee68d6944e61..4a8c8b02e9cc 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -574,3 +574,82 @@ int perf_event__parse_sample(const union perf_event *event, u64 type, return 0; } + +int perf_event__synthesize_sample(union perf_event *event, u64 type, + const struct perf_sample *sample, + bool swapped) +{ + u64 *array; + + /* + * used for cross-endian analysis. See git commit 65014ab3 + * for why this goofiness is needed. + */ + union { + u64 val64; + u32 val32[2]; + } u; + + array = event->sample.array; + + if (type & PERF_SAMPLE_IP) { + event->ip.ip = sample->ip; + array++; + } + + if (type & PERF_SAMPLE_TID) { + u.val32[0] = sample->pid; + u.val32[1] = sample->tid; + if (swapped) { + /* + * Inverse of what is done in perf_event__parse_sample + */ + u.val32[0] = bswap_32(u.val32[0]); + u.val32[1] = bswap_32(u.val32[1]); + u.val64 = bswap_64(u.val64); + } + + *array = u.val64; + array++; + } + + if (type & PERF_SAMPLE_TIME) { + *array = sample->time; + array++; + } + + if (type & PERF_SAMPLE_ADDR) { + *array = sample->addr; + array++; + } + + if (type & PERF_SAMPLE_ID) { + *array = sample->id; + array++; + } + + if (type & PERF_SAMPLE_STREAM_ID) { + *array = sample->stream_id; + array++; + } + + if (type & PERF_SAMPLE_CPU) { + u.val32[0] = sample->cpu; + if (swapped) { + /* + * Inverse of what is done in perf_event__parse_sample + */ + u.val32[0] = bswap_32(u.val32[0]); + u.val64 = bswap_64(u.val64); + } + *array = u.val64; + array++; + } + + if (type & PERF_SAMPLE_PERIOD) { + *array = sample->period; + array++; + } + + return 0; +} diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index 30e9c6b6fc3c..fb696124ad61 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -134,6 +134,14 @@ static inline int perf_session__parse_sample(struct perf_session *session, session->header.needs_swap); } +static inline int perf_session__synthesize_sample(struct perf_session *session, + union perf_event *event, + const struct perf_sample *sample) +{ + return perf_event__synthesize_sample(event, session->sample_type, + sample, session->header.needs_swap); +} + struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, unsigned int type); |