Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752481AbaBGBjV (ORCPT ); Thu, 6 Feb 2014 20:39:21 -0500 Received: from lgeamrelo01.lge.com ([156.147.1.125]:63761 "EHLO LGEAMRELO01.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751582AbaBGBfr (ORCPT ); Thu, 6 Feb 2014 20:35:47 -0500 X-AuditID: 9c93017d-b7b1fae00000636d-c3-52f4386ed30b From: Namhyung Kim To: Arnaldo Carvalho de Melo Cc: Peter Zijlstra , Ingo Molnar , Paul Mackerras , Namhyung Kim , LKML , Arun Sharma , Frederic Weisbecker , Rodrigo Campos , Andi Kleen , David Ahern Subject: [PATCH 17/21] perf tools: Add callback function to hist_entry_iter Date: Fri, 7 Feb 2014 10:35:19 +0900 Message-Id: <1391736923-30765-18-git-send-email-namhyung@kernel.org> X-Mailer: git-send-email 1.7.11.7 In-Reply-To: <1391736923-30765-1-git-send-email-namhyung@kernel.org> References: <1391736923-30765-1-git-send-email-namhyung@kernel.org> X-Brightmail-Tracker: AAAAAA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The new ->add_entry_cb() will be called after an entry was added to the histogram. It's used for code sharing between perf report and perf top. Note that ops->add_*_entry() should set iter->he properly in order to call the ->add_entry_cb. Also pass @arg to the callback function. It'll be used by perf top later. Tested-by: Arun Sharma Cc: Frederic Weisbecker Signed-off-by: Namhyung Kim --- tools/perf/builtin-report.c | 31 ++++++++++++++++++++++++++++--- tools/perf/util/hist.c | 44 ++++++++++++++++++++++++-------------------- tools/perf/util/hist.h | 5 ++++- 3 files changed, 56 insertions(+), 24 deletions(-) diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 48d2981877b1..066354fc00de 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -79,6 +79,27 @@ static int report__config(const char *var, const char *value, void *cb) return perf_default_config(var, value, cb); } +static int hist_iter_cb(struct hist_entry_iter *iter, + struct addr_location *al, bool single, + void *arg __maybe_unused) +{ + int err; + struct hist_entry *he = iter->he; + struct perf_evsel *evsel = iter->evsel; + struct perf_sample *sample = iter->sample; + + err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr); + + if (!single) + goto out; + + evsel->hists.stats.total_period += sample->period; + hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE); + +out: + return err; +} + static int process_sample_event(struct perf_tool *tool, union perf_event *event, struct perf_sample *sample, @@ -108,15 +129,19 @@ static int process_sample_event(struct perf_tool *tool, iter.ops = &hist_iter_branch; else if (rep->mem_mode) iter.ops = &hist_iter_mem; - else if (symbol_conf.cumulate_callchain) + else if (symbol_conf.cumulate_callchain) { iter.ops = &hist_iter_cumulative; - else + iter.add_entry_cb = hist_iter_cb; + } else { iter.ops = &hist_iter_normal; + iter.add_entry_cb = hist_iter_cb; + } if (al.map != NULL) al.map->dso->hit = 1; - ret = hist_entry_iter__add(&iter, &al, evsel, sample, rep->max_stack); + ret = hist_entry_iter__add(&iter, &al, evsel, sample, rep->max_stack, + NULL); if (ret < 0) pr_debug("problem adding hist entry, skipping event\n"); diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index d7912a5c14dc..688700bab4c4 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -684,11 +684,10 @@ iter_add_single_normal_entry(struct hist_entry_iter *iter, struct addr_location } static int -iter_finish_normal_entry(struct hist_entry_iter *iter, struct addr_location *al) +iter_finish_normal_entry(struct hist_entry_iter *iter, + struct addr_location *al __maybe_unused) { - int err; struct hist_entry *he = iter->he; - struct perf_evsel *evsel = iter->evsel; struct perf_sample *sample = iter->sample; if (he == NULL) @@ -696,13 +695,6 @@ iter_finish_normal_entry(struct hist_entry_iter *iter, struct addr_location *al) iter->he = NULL; - err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr); - if (err) - return err; - - evsel->hists.stats.total_period += sample->period; - hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE); - return hist_entry__append_callchain(he, sample); } static int @@ -743,6 +735,7 @@ iter_add_single_cumulative_entry(struct hist_entry_iter *iter, if (he == NULL) return -ENOMEM; + iter->he = he; he_cache[iter->curr++] = he; callchain_append(he->callchain, &callchain_cursor, sample->period); @@ -753,7 +746,7 @@ iter_add_single_cumulative_entry(struct hist_entry_iter *iter, */ callchain_cursor_commit(&callchain_cursor); - return hist_entry__inc_addr_samples(he, evsel->idx, al->addr); + return 0; } static int @@ -800,8 +793,11 @@ iter_add_next_cumulative_entry(struct hist_entry_iter *iter, * It's possible that it has cycles or recursive calls. */ for (i = 0; i < iter->curr; i++) { - if (hist_entry__cmp(he_cache[i], &he_tmp) == 0) + if (hist_entry__cmp(he_cache[i], &he_tmp) == 0) { + /* to avoid calling callback function */ + iter->he = NULL; return 0; + } } he = __hists__add_entry(&evsel->hists, al, iter->parent, NULL, NULL, @@ -810,24 +806,20 @@ iter_add_next_cumulative_entry(struct hist_entry_iter *iter, if (he == NULL) return -ENOMEM; + iter->he = he; he_cache[iter->curr++] = he; callchain_append(he->callchain, &cursor, sample->period); - return hist_entry__inc_addr_samples(he, evsel->idx, al->addr); + return 0; } static int iter_finish_cumulative_entry(struct hist_entry_iter *iter, struct addr_location *al __maybe_unused) { - struct perf_evsel *evsel = iter->evsel; - struct perf_sample *sample = iter->sample; - - evsel->hists.stats.total_period += sample->period; - hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE); - zfree(&iter->priv); + iter->he = NULL; return 0; } @@ -865,7 +857,7 @@ const struct hist_iter_ops hist_iter_cumulative = { 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) + int max_stack_depth, void *arg) { int err, err2; @@ -885,10 +877,22 @@ int hist_entry_iter__add(struct hist_entry_iter *iter, struct addr_location *al, if (err) goto out; + if (iter->he && iter->add_entry_cb) { + err = iter->add_entry_cb(iter, al, true, arg); + if (err) + goto out; + } + while (iter->ops->next_entry(iter, al)) { err = iter->ops->add_next_entry(iter, al); if (err) break; + + if (iter->he && iter->add_entry_cb) { + err = iter->add_entry_cb(iter, al, false, arg); + if (err) + goto out; + } } out: diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index a02342141db9..28a88ea6e5ce 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -107,6 +107,9 @@ struct hist_entry_iter { void *priv; const struct hist_iter_ops *ops; + /* user-defined callback function (optional) */ + int (*add_entry_cb)(struct hist_entry_iter *iter, + struct addr_location *al, bool single, void *arg); }; extern const struct hist_iter_ops hist_iter_normal; @@ -123,7 +126,7 @@ struct hist_entry *__hists__add_entry(struct hists *hists, 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); + int max_stack_depth, void *arg); int64_t hist_entry__cmp(struct hist_entry *left, struct hist_entry *right); int64_t hist_entry__collapse(struct hist_entry *left, struct hist_entry *right); -- 1.7.11.7 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/