perf session: Pass evsel in event_ops->sample()
Arnaldo Carvalho de Melo [Tue, 15 Mar 2011 18:44:01 +0000 (15:44 -0300)]
Resolving the sample->id to an evsel since the most advanced tools,
report and annotate, and the others will too when they evolve to
properly support multi-event perf.data files.

Good also because it does an extra validation, checking that the ID is
valid when present. When that is not the case, the overhead is just a
branch + function call (perf_evlist__id2evsel).

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

17 files changed:
tools/perf/builtin-annotate.c
tools/perf/builtin-diff.c
tools/perf/builtin-inject.c
tools/perf/builtin-kmem.c
tools/perf/builtin-lock.c
tools/perf/builtin-report.c
tools/perf/builtin-sched.c
tools/perf/builtin-script.c
tools/perf/builtin-timechart.c
tools/perf/util/build-id.c
tools/perf/util/hist.h
tools/perf/util/scripting-engines/trace-event-perl.c
tools/perf/util/scripting-engines/trace-event-python.c
tools/perf/util/session.c
tools/perf/util/session.h
tools/perf/util/trace-event-scripting.c
tools/perf/util/trace-event.h

index 695de4b..e18eb7e 100644 (file)
@@ -42,9 +42,9 @@ static const char *sym_hist_filter;
 
 static int perf_evlist__add_sample(struct perf_evlist *evlist,
                                   struct perf_sample *sample,
+                                  struct perf_evsel *evsel,
                                   struct addr_location *al)
 {
-       struct perf_evsel *evsel;
        struct hist_entry *he;
        int ret;
 
@@ -59,18 +59,6 @@ static int perf_evlist__add_sample(struct perf_evlist *evlist,
                return 0;
        }
 
-       evsel = perf_evlist__id2evsel(evlist, sample->id);
-       if (evsel == NULL) {
-               /*
-                * FIXME: Propagate this back, but at least we're in a builtin,
-                * where exit() is allowed. ;-)
-                */
-               ui__warning("Invalid %s file, contains samples with id not in "
-                           "its header!\n", input_name);
-               exit_browser(0);
-               exit(1);
-       }
-
        he = __hists__add_entry(&evsel->hists, al, NULL, 1);
        if (he == NULL)
                return -ENOMEM;
@@ -92,6 +80,7 @@ static int perf_evlist__add_sample(struct perf_evlist *evlist,
 
 static int process_sample_event(union perf_event *event,
                                struct perf_sample *sample,
+                               struct perf_evsel *evsel,
                                struct perf_session *session)
 {
        struct addr_location al;
@@ -103,7 +92,8 @@ static int process_sample_event(union perf_event *event,
                return -1;
        }
 
-       if (!al.filtered && perf_evlist__add_sample(session->evlist, sample, &al)) {
+       if (!al.filtered &&
+           perf_evlist__add_sample(session->evlist, sample, evsel, &al)) {
                pr_warning("problem incrementing symbol count, "
                           "skipping event\n");
                return -1;
index 6b7d911..e821999 100644 (file)
@@ -32,6 +32,7 @@ static int hists__add_entry(struct hists *self,
 
 static int diff__process_sample_event(union perf_event *event,
                                      struct perf_sample *sample,
+                                     struct perf_evsel *evsel __used,
                                      struct perf_session *session)
 {
        struct addr_location al;
index e29f04e..8dfc12b 100644 (file)
@@ -43,6 +43,14 @@ static int perf_event__repipe(union perf_event *event,
        return perf_event__repipe_synth(event, session);
 }
 
+static int perf_event__repipe_sample(union perf_event *event,
+                             struct perf_sample *sample __used,
+                             struct perf_evsel *evsel __used,
+                             struct perf_session *session)
+{
+       return perf_event__repipe_synth(event, session);
+}
+
 static int perf_event__repipe_mmap(union perf_event *event,
                                   struct perf_sample *sample,
                                   struct perf_session *session)
@@ -124,6 +132,7 @@ static int dso__inject_build_id(struct dso *self, struct perf_session *session)
 
 static int perf_event__inject_buildid(union perf_event *event,
                                      struct perf_sample *sample,
+                                     struct perf_evsel *evsel __used,
                                      struct perf_session *session)
 {
        struct addr_location al;
@@ -164,7 +173,7 @@ repipe:
 }
 
 struct perf_event_ops inject_ops = {
-       .sample         = perf_event__repipe,
+       .sample         = perf_event__repipe_sample,
        .mmap           = perf_event__repipe,
        .comm           = perf_event__repipe,
        .fork           = perf_event__repipe,
index 7f618f4..225e963 100644 (file)
@@ -305,6 +305,7 @@ static void process_raw_event(union perf_event *raw_event __used, void *data,
 
 static int process_sample_event(union perf_event *event,
                                struct perf_sample *sample,
+                               struct perf_evsel *evsel __used,
                                struct perf_session *session)
 {
        struct thread *thread = perf_session__findnew(session, event->ip.pid);
index 7a2a79d..9ac05aa 100644 (file)
@@ -845,7 +845,9 @@ static void dump_info(void)
                die("Unknown type of information\n");
 }
 
-static int process_sample_event(union perf_event *event, struct perf_sample *sample,
+static int process_sample_event(union perf_event *event,
+                               struct perf_sample *sample,
+                               struct perf_evsel *evsel __used,
                                struct perf_session *s)
 {
        struct thread *thread = perf_session__findnew(s, sample->tid);
index b1b8200..498c6f7 100644 (file)
@@ -50,12 +50,12 @@ static symbol_filter_t      annotate_init;
 
 static int perf_session__add_hist_entry(struct perf_session *session,
                                        struct addr_location *al,
-                                       struct perf_sample *sample)
+                                       struct perf_sample *sample,
+                                       struct perf_evsel *evsel)
 {
        struct symbol *parent = NULL;
        int err = 0;
        struct hist_entry *he;
-       struct perf_evsel *evsel;
 
        if ((sort__has_parent || symbol_conf.use_callchain) && sample->callchain) {
                err = perf_session__resolve_callchain(session, al->thread,
@@ -64,18 +64,6 @@ static int perf_session__add_hist_entry(struct perf_session *session,
                        return err;
        }
 
-       evsel = perf_evlist__id2evsel(session->evlist, sample->id);
-       if (evsel == NULL) {
-               /*
-                * FIXME: Propagate this back, but at least we're in a builtin,
-                * where exit() is allowed. ;-)
-                */
-               ui__warning("Invalid %s file, contains samples with id %" PRIu64 " not in "
-                           "its header!\n", input_name, sample->id);
-               exit_browser(0);
-               exit(1);
-       }
-
        he = __hists__add_entry(&evsel->hists, al, parent, sample->period);
        if (he == NULL)
                return -ENOMEM;
@@ -113,6 +101,7 @@ out:
 
 static int process_sample_event(union perf_event *event,
                                struct perf_sample *sample,
+                               struct perf_evsel *evsel,
                                struct perf_session *session)
 {
        struct addr_location al;
@@ -127,7 +116,7 @@ static int process_sample_event(union perf_event *event,
        if (al.filtered || (hide_unresolved && al.sym == NULL))
                return 0;
 
-       if (perf_session__add_hist_entry(session, &al, sample)) {
+       if (perf_session__add_hist_entry(session, &al, sample, evsel)) {
                pr_debug("problem incrementing symbol period, skipping event\n");
                return -1;
        }
index a32f411..dcfe887 100644 (file)
@@ -1603,6 +1603,7 @@ static void process_raw_event(union perf_event *raw_event __used,
 
 static int process_sample_event(union perf_event *event,
                                struct perf_sample *sample,
+                               struct perf_evsel *evsel __used,
                                struct perf_session *session)
 {
        struct thread *thread;
index 9f5fc54..ac574ea 100644 (file)
@@ -162,19 +162,11 @@ static void print_sample_start(struct perf_sample *sample,
 
 static void process_event(union perf_event *event __unused,
                          struct perf_sample *sample,
+                         struct perf_evsel *evsel,
                          struct perf_session *session,
                          struct thread *thread)
 {
-       struct perf_event_attr *attr;
-       struct perf_evsel *evsel;
-
-       evsel = perf_evlist__id2evsel(session->evlist, sample->id);
-       if (evsel == NULL) {
-               pr_err("Invalid data. Contains samples with id not in "
-                      "its header!\n");
-               return;
-       }
-       attr = &evsel->attr;
+       struct perf_event_attr *attr = &evsel->attr;
 
        if (output_fields[attr->type] == 0)
                return;
@@ -244,6 +236,7 @@ static char const           *input_name = "perf.data";
 
 static int process_sample_event(union perf_event *event,
                                struct perf_sample *sample,
+                               struct perf_evsel *evsel,
                                struct perf_session *session)
 {
        struct thread *thread = perf_session__findnew(session, event->ip.pid);
@@ -264,7 +257,7 @@ static int process_sample_event(union perf_event *event,
                last_timestamp = sample->time;
                return 0;
        }
-       scripting_ops->process_event(event, sample, session, thread);
+       scripting_ops->process_event(event, sample, evsel, session, thread);
 
        session->hists.stats.total_period += sample->period;
        return 0;
index 67c0459..aa26f4d 100644 (file)
@@ -488,6 +488,7 @@ static void sched_switch(int cpu, u64 timestamp, struct trace_entry *te)
 
 static int process_sample_event(union perf_event *event __used,
                                struct perf_sample *sample,
+                               struct perf_evsel *evsel __used,
                                struct perf_session *session)
 {
        struct trace_entry *te;
@@ -506,6 +507,16 @@ static int process_sample_event(union perf_event *event __used,
                struct power_entry_old *peo;
                peo = (void *)te;
 #endif
+               /*
+                * FIXME: use evsel, its already mapped from id to perf_evsel,
+                * remove perf_header__find_event infrastructure bits.
+                * Mapping all these "power:cpu_idle" strings to the tracepoint
+                * ID and then just comparing against evsel->attr.config.
+                *
+                * e.g.:
+                *
+                * if (evsel->attr.config == power_cpu_idle_id)
+                */
                event_str = perf_header__find_event(te->type);
 
                if (!event_str)
index 31f934a..a91cd99 100644 (file)
@@ -16,6 +16,7 @@
 
 static int build_id__mark_dso_hit(union perf_event *event,
                                  struct perf_sample *sample __used,
+                                 struct perf_evsel *evsel __used,
                                  struct perf_session *session)
 {
        struct addr_location al;
index cb6858a..3beb97c 100644 (file)
@@ -29,6 +29,7 @@ struct events_stats {
        u32 nr_events[PERF_RECORD_HEADER_MAX];
        u32 nr_unknown_events;
        u32 nr_invalid_chains;
+       u32 nr_unknown_id;
 };
 
 enum hist_column {
index 6214272..74350ff 100644 (file)
@@ -247,6 +247,7 @@ static inline struct event *find_cache_event(int type)
 
 static void perl_process_event(union perf_event *pevent __unused,
                               struct perf_sample *sample,
+                              struct perf_evsel *evsel,
                               struct perf_session *session __unused,
                               struct thread *thread)
 {
index 1b85d60..6ccf70e 100644 (file)
@@ -206,6 +206,7 @@ static inline struct event *find_cache_event(int type)
 
 static void python_process_event(union perf_event *pevent __unused,
                                 struct perf_sample *sample,
+                                struct perf_evsel *evsel __unused,
                                 struct perf_session *session __unused,
                                 struct thread *thread)
 {
index c68cf40..caa2245 100644 (file)
@@ -280,6 +280,15 @@ static int process_event_synth_stub(union perf_event *event __used,
        return 0;
 }
 
+static int process_event_sample_stub(union perf_event *event __used,
+                                    struct perf_sample *sample __used,
+                                    struct perf_evsel *evsel __used,
+                                    struct perf_session *session __used)
+{
+       dump_printf(": unhandled!\n");
+       return 0;
+}
+
 static int process_event_stub(union perf_event *event __used,
                              struct perf_sample *sample __used,
                              struct perf_session *session __used)
@@ -303,7 +312,7 @@ static int process_finished_round(union perf_event *event,
 static void perf_event_ops__fill_defaults(struct perf_event_ops *handler)
 {
        if (handler->sample == NULL)
-               handler->sample = process_event_stub;
+               handler->sample = process_event_sample_stub;
        if (handler->mmap == NULL)
                handler->mmap = process_event_stub;
        if (handler->comm == NULL)
@@ -698,12 +707,19 @@ static int perf_session_deliver_event(struct perf_session *session,
                                      struct perf_event_ops *ops,
                                      u64 file_offset)
 {
+       struct perf_evsel *evsel;
+
        dump_event(session, event, file_offset, sample);
 
        switch (event->header.type) {
        case PERF_RECORD_SAMPLE:
                dump_sample(session, event, sample);
-               return ops->sample(event, sample, session);
+               evsel = perf_evlist__id2evsel(session->evlist, sample->id);
+               if (evsel == NULL) {
+                       ++session->hists.stats.nr_unknown_id;
+                       return -1;
+               }
+               return ops->sample(event, sample, evsel, session);
        case PERF_RECORD_MMAP:
                return ops->mmap(event, sample, session);
        case PERF_RECORD_COMM:
@@ -845,6 +861,11 @@ static void perf_session__warn_about_errors(const struct perf_session *session,
                            session->hists.stats.nr_unknown_events);
        }
 
+       if (session->hists.stats.nr_unknown_id != 0) {
+               ui__warning("%u samples with id not present in the header\n",
+                           session->hists.stats.nr_unknown_id);
+       }
+
        if (session->hists.stats.nr_invalid_chains != 0) {
                ui__warning("Found invalid callchains!\n\n"
                            "%u out of %u events were discarded for this reason.\n\n"
index 0b3c9af..1ac481f 100644 (file)
@@ -55,8 +55,11 @@ struct perf_session {
        char                    filename[0];
 };
 
+struct perf_evsel;
 struct perf_event_ops;
 
+typedef int (*event_sample)(union perf_event *event, struct perf_sample *sample,
+                           struct perf_evsel *evsel, struct perf_session *session);
 typedef int (*event_op)(union perf_event *self, struct perf_sample *sample,
                        struct perf_session *session);
 typedef int (*event_synth_op)(union perf_event *self,
@@ -65,8 +68,8 @@ typedef int (*event_op2)(union perf_event *self, struct perf_session *session,
                         struct perf_event_ops *ops);
 
 struct perf_event_ops {
-       event_op        sample,
-                       mmap,
+       event_sample    sample;
+       event_op        mmap,
                        comm,
                        fork,
                        exit,
index 66f4b78..c9dcbec 100644 (file)
@@ -38,6 +38,7 @@ static int stop_script_unsupported(void)
 
 static void process_event_unsupported(union perf_event *event __unused,
                                      struct perf_sample *sample __unused,
+                                     struct perf_evsel *evsel __unused,
                                      struct perf_session *session __unused,
                                      struct thread *thread __unused)
 {
index b04da57..f674dda 100644 (file)
@@ -280,6 +280,7 @@ struct scripting_ops {
        int (*stop_script) (void);
        void (*process_event) (union perf_event *event,
                               struct perf_sample *sample,
+                              struct perf_evsel *evsel,
                               struct perf_session *session,
                               struct thread *thread);
        int (*generate_script) (const char *outfile);