nagai/kernel
3
0
Fork 0
forked from mirrors/linux
Code Pull requests Activity

perf tools: Expand perf_event__synthesize_sample()

Browse source 
Expand perf_event__synthesize_sample() to handle all sample format bits.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1377591794-30553-10-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2013-08-27 11:23:11 +03:00 committed by Arnaldo Carvalho de Melo
parent 5b95a4a3b5
commit d03f217054
3 changed files with 97 additions and 3 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

4
tools/perf/builtin-inject.c
View file

@ -301,7 +301,9 @@ static int perf_inject__sched_stat(struct perf_tool *tool,
sample_sw.period = sample->period;
sample_sw.time = sample->time;
perf_event__synthesize_sample(event_sw, evsel->attr.sample_type,
&sample_sw, false);
evsel->attr.sample_regs_user,
evsel->attr.read_format, &sample_sw,
false);
build_id__mark_dso_hit(tool, event_sw, &sample_sw, evsel, machine);
return perf_event__repipe(tool, event_sw, &sample_sw, machine);
}

1
tools/perf/util/event.h
View file

@ -230,6 +230,7 @@ int perf_event__preprocess_sample(const union perf_event *self,
const char *perf_event__name(unsigned int id);
int perf_event__synthesize_sample(union perf_event *event, u64 type,
u64 sample_regs_user, u64 read_format,
const struct perf_sample *sample,
bool swapped);

95
tools/perf/util/evsel.c
View file

@ -1416,7 +1416,6 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
}
if (type & PERF_SAMPLE_REGS_USER) {
/* First u64 tells us if we have any regs in sample. */
OVERFLOW_CHECK_u64(array);
data->user_regs.abi = *array;
array++;
@ -1467,11 +1466,12 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
}
int perf_event__synthesize_sample(union perf_event *event, u64 type,
u64 sample_regs_user, u64 read_format,
const struct perf_sample *sample,
bool swapped)
{
u64 *array;
size_t sz;
/*
* used for cross-endian analysis. See git commit 65014ab3
* for why this goofiness is needed.
@ -1544,6 +1544,97 @@ int perf_event__synthesize_sample(union perf_event *event, u64 type,
array++;
}
if (type & PERF_SAMPLE_READ) {
if (read_format & PERF_FORMAT_GROUP)
*array = sample->read.group.nr;
else
*array = sample->read.one.value;
array++;
if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
*array = sample->read.time_enabled;
array++;
}
if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
*array = sample->read.time_running;
array++;
}
/* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */
if (read_format & PERF_FORMAT_GROUP) {
sz = sample->read.group.nr *
sizeof(struct sample_read_value);
memcpy(array, sample->read.group.values, sz);
array = (void *)array + sz;
} else {
*array = sample->read.one.id;
array++;
}
}
if (type & PERF_SAMPLE_CALLCHAIN) {
sz = (sample->callchain->nr + 1) * sizeof(u64);
memcpy(array, sample->callchain, sz);
array = (void *)array + sz;
}
if (type & PERF_SAMPLE_RAW) {
u.val32[0] = sample->raw_size;
if (WARN_ONCE(swapped,
"Endianness of raw data not corrected!\n")) {
/*
* Inverse of what is done in perf_evsel__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 = (void *)array + sizeof(u32);
memcpy(array, sample->raw_data, sample->raw_size);
array = (void *)array + sample->raw_size;
}
if (type & PERF_SAMPLE_BRANCH_STACK) {
sz = sample->branch_stack->nr * sizeof(struct branch_entry);
sz += sizeof(u64);
memcpy(array, sample->branch_stack, sz);
array = (void *)array + sz;
}
if (type & PERF_SAMPLE_REGS_USER) {
if (sample->user_regs.abi) {
*array++ = sample->user_regs.abi;
sz = hweight_long(sample_regs_user) * sizeof(u64);
memcpy(array, sample->user_regs.regs, sz);
array = (void *)array + sz;
} else {
*array++ = 0;
}
}
if (type & PERF_SAMPLE_STACK_USER) {
sz = sample->user_stack.size;
*array++ = sz;
if (sz) {
memcpy(array, sample->user_stack.data, sz);
array = (void *)array + sz;
*array++ = sz;
}
}
if (type & PERF_SAMPLE_WEIGHT) {
*array = sample->weight;
array++;
}
if (type & PERF_SAMPLE_DATA_SRC) {
*array = sample->data_src;
array++;
}
return 0;
}