perf tools: Expand perf_event__synthesize_sample()

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>

diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
index ffacd46..9b336fd 100644 (file)
--- a/tools/perf/builtin-inject.c
+++ b/tools/perf/builtin-inject.c
@@ -301,7 +301,9 @@ found:
        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);
 }

diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index f959801..1c80e13 100644 (file)
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -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);
 

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 1184188..7d62373 100644 (file)
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -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;
 }