From 820bc81f4cdaac09a8f25040d3a20d86f3da292b Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 22 Apr 2014 11:44:21 +0900 Subject: perf tools: Account entry stats when it's added to the output tree Currently, accounting each sample is done in multiple places - once when adding them to the input tree, other when adding them to the output tree. It's not only confusing but also can cause a subtle problem since concurrent processing like in perf top might see the updated stats before adding entries into the output tree - like seeing more (blank) lines at the end and/or slight inaccurate percentage. To fix this, only account the entries when it's moved into the output tree so that they cannot be seen prematurely. There're some exceptional cases here and there - they should be addressed separately with comments. Signed-off-by: Namhyung Kim Link: http://lkml.kernel.org/r/1398327843-31845-7-git-send-email-namhyung@kernel.org Signed-off-by: Jiri Olsa --- tools/perf/builtin-annotate.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'tools/perf/builtin-annotate.c') diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index 0da603b79b6..d30d2c2e2a7 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -46,7 +46,7 @@ struct perf_annotate { }; static int perf_evsel__add_sample(struct perf_evsel *evsel, - struct perf_sample *sample, + struct perf_sample *sample __maybe_unused, struct addr_location *al, struct perf_annotate *ann) { @@ -70,7 +70,6 @@ static int perf_evsel__add_sample(struct perf_evsel *evsel, return -ENOMEM; ret = hist_entry__inc_addr_samples(he, evsel->idx, al->addr); - evsel->hists.stats.total_period += sample->period; hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE); return ret; } -- cgit v1.2.3-70-g09d2 From 1844dbcbe78503e0f4a8996d69da725d5e7a5177 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Wed, 28 May 2014 14:12:18 +0900 Subject: perf tools: Introduce hists__inc_nr_samples() There're some duplicate code for counting number of samples. Add hists__inc_nr_samples() and reuse it. Suggested-by: Jiri Olsa Signed-off-by: Namhyung Kim Link: http://lkml.kernel.org/r/1401335910-16832-2-git-send-email-namhyung@kernel.org Signed-off-by: Jiri Olsa --- tools/perf/builtin-annotate.c | 2 +- tools/perf/builtin-report.c | 4 +--- tools/perf/builtin-sched.c | 2 +- tools/perf/builtin-top.c | 5 +---- tools/perf/tests/hists_filter.c | 4 +--- tools/perf/util/hist.c | 7 +++++++ tools/perf/util/hist.h | 1 + 7 files changed, 13 insertions(+), 12 deletions(-) (limited to 'tools/perf/builtin-annotate.c') diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index d30d2c2e2a7..bf52461a88b 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -70,7 +70,7 @@ static int perf_evsel__add_sample(struct perf_evsel *evsel, return -ENOMEM; ret = hist_entry__inc_addr_samples(he, evsel->idx, al->addr); - hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE); + hists__inc_nr_samples(&evsel->hists, true); return ret; } diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index bc0eec1ce4b..4a3b84dd4f4 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -92,9 +92,7 @@ static void report__inc_stats(struct report *rep, struct hist_entry *he) * counted in perf_session_deliver_event(). The dump_trace * requires this info is ready before going to the output tree. */ - hists__inc_nr_events(he->hists, PERF_RECORD_SAMPLE); - if (!he->filtered) - he->hists->stats.nr_non_filtered_samples++; + hists__inc_nr_samples(he->hists, he->filtered); } static int report__add_mem_hist_entry(struct report *rep, struct addr_location *al, diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index d7176830b9b..c38d06c0477 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -1428,7 +1428,7 @@ static int perf_sched__process_tracepoint_sample(struct perf_tool *tool __maybe_ int err = 0; evsel->hists.stats.total_period += sample->period; - hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE); + hists__inc_nr_samples(&evsel->hists, true); if (evsel->handler != NULL) { tracepoint_handler f = evsel->handler; diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 5b389ce4cd1..51309264d21 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -252,10 +252,7 @@ static struct hist_entry *perf_evsel__add_hist_entry(struct perf_evsel *evsel, if (he == NULL) return NULL; - hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE); - if (!he->filtered) - evsel->hists.stats.nr_non_filtered_samples++; - + hists__inc_nr_samples(&evsel->hists, he->filtered); return he; } diff --git a/tools/perf/tests/hists_filter.c b/tools/perf/tests/hists_filter.c index c5ba924a358..0a71ef4b915 100644 --- a/tools/perf/tests/hists_filter.c +++ b/tools/perf/tests/hists_filter.c @@ -85,9 +85,7 @@ static int add_hist_entries(struct perf_evlist *evlist, struct machine *machine) fake_samples[i].map = al.map; fake_samples[i].sym = al.sym; - hists__inc_nr_events(he->hists, PERF_RECORD_SAMPLE); - if (!he->filtered) - he->hists->stats.nr_non_filtered_samples++; + hists__inc_nr_samples(he->hists, he->filtered); } } diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index b262b44b7a6..5943ba60f19 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -800,6 +800,13 @@ void hists__inc_nr_events(struct hists *hists, u32 type) events_stats__inc(&hists->stats, type); } +void hists__inc_nr_samples(struct hists *hists, bool filtered) +{ + events_stats__inc(&hists->stats, PERF_RECORD_SAMPLE); + if (!filtered) + hists->stats.nr_non_filtered_samples++; +} + static struct hist_entry *hists__add_dummy_entry(struct hists *hists, struct hist_entry *pair) { diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index a8418d19808..03ae1dbb1b1 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -119,6 +119,7 @@ u64 hists__total_period(struct hists *hists); void hists__reset_stats(struct hists *hists); void hists__inc_stats(struct hists *hists, struct hist_entry *h); void hists__inc_nr_events(struct hists *hists, u32 type); +void hists__inc_nr_samples(struct hists *hists, bool filtered); void events_stats__inc(struct events_stats *stats, u32 type); size_t events_stats__fprintf(struct events_stats *stats, FILE *fp); -- cgit v1.2.3-70-g09d2 From a0b51af367a6831330564c96dc4cc1ac63413701 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 11 Sep 2012 13:34:27 +0900 Subject: perf hists: Check if accumulated when adding a hist entry To support callchain accumulation, @entry should be recognized if it's accumulated or not when add_hist_entry() called. The period of an accumulated entry should be added to ->stat_acc but not ->stat. Add @sample_self arg for that. Signed-off-by: Namhyung Kim Tested-by: Arun Sharma Tested-by: Rodrigo Campos Cc: Frederic Weisbecker Link: http://lkml.kernel.org/r/1401335910-16832-5-git-send-email-namhyung@kernel.org Signed-off-by: Jiri Olsa --- tools/perf/builtin-annotate.c | 3 ++- tools/perf/builtin-diff.c | 2 +- tools/perf/builtin-top.c | 2 +- tools/perf/tests/hists_link.c | 4 ++-- tools/perf/util/hist.c | 29 ++++++++++++++++++----------- tools/perf/util/hist.h | 3 ++- 6 files changed, 26 insertions(+), 17 deletions(-) (limited to 'tools/perf/builtin-annotate.c') diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index bf52461a88b..1ec429fef2b 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -65,7 +65,8 @@ static int perf_evsel__add_sample(struct perf_evsel *evsel, return 0; } - he = __hists__add_entry(&evsel->hists, al, NULL, NULL, NULL, 1, 1, 0); + he = __hists__add_entry(&evsel->hists, al, NULL, NULL, NULL, 1, 1, 0, + true); if (he == NULL) return -ENOMEM; diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index 8bff543acaa..9a5a035cb42 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -315,7 +315,7 @@ static int hists__add_entry(struct hists *hists, u64 weight, u64 transaction) { if (__hists__add_entry(hists, al, NULL, NULL, NULL, period, weight, - transaction) != NULL) + transaction, true) != NULL) return 0; return -ENOMEM; } diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 51309264d21..12e2e1227e4 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -247,7 +247,7 @@ static struct hist_entry *perf_evsel__add_hist_entry(struct perf_evsel *evsel, pthread_mutex_lock(&evsel->hists.lock); he = __hists__add_entry(&evsel->hists, al, NULL, NULL, NULL, sample->period, sample->weight, - sample->transaction); + sample->transaction, true); pthread_mutex_unlock(&evsel->hists.lock); if (he == NULL) return NULL; diff --git a/tools/perf/tests/hists_link.c b/tools/perf/tests/hists_link.c index 5ffa2c3eb77..ca6693b37cd 100644 --- a/tools/perf/tests/hists_link.c +++ b/tools/perf/tests/hists_link.c @@ -88,7 +88,7 @@ static int add_hist_entries(struct perf_evlist *evlist, struct machine *machine) goto out; he = __hists__add_entry(&evsel->hists, &al, NULL, - NULL, NULL, 1, 1, 0); + NULL, NULL, 1, 1, 0, true); if (he == NULL) goto out; @@ -112,7 +112,7 @@ static int add_hist_entries(struct perf_evlist *evlist, struct machine *machine) goto out; he = __hists__add_entry(&evsel->hists, &al, NULL, - NULL, NULL, 1, 1, 0); + NULL, NULL, 1, 1, 0, true); if (he == NULL) goto out; diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index dfff2ee8eff..b9facf33b22 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -279,7 +279,8 @@ void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel) * histogram, sorted on item, collects periods */ -static struct hist_entry *hist_entry__new(struct hist_entry *template) +static struct hist_entry *hist_entry__new(struct hist_entry *template, + bool sample_self) { size_t callchain_size = 0; struct hist_entry *he; @@ -299,6 +300,8 @@ static struct hist_entry *hist_entry__new(struct hist_entry *template) return NULL; } memcpy(he->stat_acc, &he->stat, sizeof(he->stat)); + if (!sample_self) + memset(&he->stat, 0, sizeof(he->stat)); } if (he->ms.map) @@ -351,7 +354,8 @@ static u8 symbol__parent_filter(const struct symbol *parent) static struct hist_entry *add_hist_entry(struct hists *hists, struct hist_entry *entry, - struct addr_location *al) + struct addr_location *al, + bool sample_self) { struct rb_node **p; struct rb_node *parent = NULL; @@ -375,7 +379,8 @@ static struct hist_entry *add_hist_entry(struct hists *hists, cmp = hist_entry__cmp(he, entry); if (!cmp) { - he_stat__add_period(&he->stat, period, weight); + if (sample_self) + he_stat__add_period(&he->stat, period, weight); if (symbol_conf.cumulate_callchain) he_stat__add_period(he->stat_acc, period, weight); @@ -405,14 +410,15 @@ static struct hist_entry *add_hist_entry(struct hists *hists, p = &(*p)->rb_right; } - he = hist_entry__new(entry); + he = hist_entry__new(entry, sample_self); if (!he) return NULL; rb_link_node(&he->rb_node_in, parent, p); rb_insert_color(&he->rb_node_in, hists->entries_in); out: - he_stat__add_cpumode_period(&he->stat, al->cpumode, period); + if (sample_self) + he_stat__add_cpumode_period(&he->stat, al->cpumode, period); if (symbol_conf.cumulate_callchain) he_stat__add_cpumode_period(he->stat_acc, al->cpumode, period); return he; @@ -423,7 +429,8 @@ struct hist_entry *__hists__add_entry(struct hists *hists, struct symbol *sym_parent, struct branch_info *bi, struct mem_info *mi, - u64 period, u64 weight, u64 transaction) + u64 period, u64 weight, u64 transaction, + bool sample_self) { struct hist_entry entry = { .thread = al->thread, @@ -448,7 +455,7 @@ struct hist_entry *__hists__add_entry(struct hists *hists, .transaction = transaction, }; - return add_hist_entry(hists, &entry, al); + return add_hist_entry(hists, &entry, al, sample_self); } static int @@ -501,7 +508,7 @@ iter_add_single_mem_entry(struct hist_entry_iter *iter, struct addr_location *al * and the he_stat__add_period() function. */ he = __hists__add_entry(&iter->evsel->hists, al, iter->parent, NULL, mi, - cost, cost, 0); + cost, cost, 0, true); if (!he) return -ENOMEM; @@ -608,7 +615,7 @@ iter_add_next_branch_entry(struct hist_entry_iter *iter, struct addr_location *a * and not events sampled. Thus we use a pseudo period of 1. */ he = __hists__add_entry(&evsel->hists, al, iter->parent, &bi[i], NULL, - 1, 1, 0); + 1, 1, 0, true); if (he == NULL) return -ENOMEM; @@ -657,7 +664,7 @@ iter_add_single_normal_entry(struct hist_entry_iter *iter, struct addr_location he = __hists__add_entry(&evsel->hists, al, iter->parent, NULL, NULL, sample->period, sample->weight, - sample->transaction); + sample->transaction, true); if (he == NULL) return -ENOMEM; @@ -1161,7 +1168,7 @@ static struct hist_entry *hists__add_dummy_entry(struct hists *hists, p = &(*p)->rb_right; } - he = hist_entry__new(pair); + he = hist_entry__new(pair, true); if (he) { memset(&he->stat, 0, sizeof(he->stat)); he->hists = hists; diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index 8894f184357..bedb24d3643 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -130,7 +130,8 @@ struct hist_entry *__hists__add_entry(struct hists *hists, struct symbol *parent, struct branch_info *bi, struct mem_info *mi, u64 period, - u64 weight, u64 transaction); + u64 weight, u64 transaction, + bool sample_self); int hist_entry_iter__add(struct hist_entry_iter *iter, struct addr_location *al, struct perf_evsel *evsel, struct perf_sample *sample, int max_stack_depth); -- cgit v1.2.3-70-g09d2