Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752987Ab0LLPKm (ORCPT ); Sun, 12 Dec 2010 10:10:42 -0500 Received: from casper.infradead.org ([85.118.1.10]:60999 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752892Ab0LLPKh (ORCPT ); Sun, 12 Dec 2010 10:10:37 -0500 From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Ian Munsie , Frederic Weisbecker , Ingo Molnar , Paul Mackerras , Peter Zijlstra , Thomas Gleixner , Arnaldo Carvalho de Melo Subject: [PATCH 2/2] perf record,report,annotate,diff: Process events in order Date: Sun, 12 Dec 2010 13:10:08 -0200 Message-Id: <1292166608-20770-3-git-send-email-acme@infradead.org> X-Mailer: git-send-email 1.6.2.5 In-Reply-To: <1292166608-20770-1-git-send-email-acme@infradead.org> References: <1292166608-20770-1-git-send-email-acme@infradead.org> X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5361 Lines: 143 From: Ian Munsie This patch changes perf report to ask for the ID info on all events be default if recording from multiple CPUs. Perf report, annotate and diff will now process the events in order if the kernel is able to provide timestamps on all events. This ensures that events such as COMM and MMAP which are necessary to correctly interpret samples are processed prior to those samples so that they are attributed correctly. Before: # perf record ./cachetest # perf report # Events: 6K cycles # # Overhead Command Shared Object Symbol # ........ ....... ................. ............................... # 74.11% :3259 [unknown] [k] 0x4a6c 1.50% cachetest ld-2.11.2.so [.] 0x1777c 1.46% :3259 [kernel.kallsyms] [k] .perf_event_mmap_ctx 1.25% :3259 [kernel.kallsyms] [k] restore 0.74% :3259 [kernel.kallsyms] [k] ._raw_spin_lock 0.71% :3259 [kernel.kallsyms] [k] .filemap_fault 0.66% :3259 [kernel.kallsyms] [k] .memset 0.54% cachetest [kernel.kallsyms] [k] .sha_transform 0.54% :3259 [kernel.kallsyms] [k] .copy_4K_page 0.54% :3259 [kernel.kallsyms] [k] .find_get_page 0.52% :3259 [kernel.kallsyms] [k] .trace_hardirqs_off 0.50% :3259 [kernel.kallsyms] [k] .__do_fault After: # perf report # Events: 6K cycles # # Overhead Command Shared Object Symbol # ........ ....... ................. ............................... # 44.28% cachetest cachetest [.] sumArrayNaive 22.53% cachetest cachetest [.] sumArrayOptimal 6.59% cachetest ld-2.11.2.so [.] 0x1777c 2.13% cachetest [unknown] [k] 0x340 1.46% cachetest [kernel.kallsyms] [k] .perf_event_mmap_ctx 1.25% cachetest [kernel.kallsyms] [k] restore 0.74% cachetest [kernel.kallsyms] [k] ._raw_spin_lock 0.71% cachetest [kernel.kallsyms] [k] .filemap_fault 0.66% cachetest [kernel.kallsyms] [k] .memset 0.54% cachetest [kernel.kallsyms] [k] .copy_4K_page 0.54% cachetest [kernel.kallsyms] [k] .find_get_page 0.54% cachetest [kernel.kallsyms] [k] .sha_transform 0.52% cachetest [kernel.kallsyms] [k] .trace_hardirqs_off 0.50% cachetest [kernel.kallsyms] [k] .__do_fault Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Thomas Gleixner LKML-Reference: <1291872833-839-1-git-send-email-imunsie@au1.ibm.com> Signed-off-by: Ian Munsie Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-annotate.c | 2 ++ tools/perf/builtin-diff.c | 2 ++ tools/perf/builtin-record.c | 5 ++++- tools/perf/builtin-report.c | 2 ++ 4 files changed, 10 insertions(+), 1 deletions(-) diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index 48dbab4..c056cdc 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -375,6 +375,8 @@ static struct perf_event_ops event_ops = { .mmap = event__process_mmap, .comm = event__process_comm, .fork = event__process_task, + .ordered_samples = true, + .ordering_requires_timestamps = true, }; static int __cmd_annotate(void) diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index af84e1c..97846dc 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -61,6 +61,8 @@ static struct perf_event_ops event_ops = { .exit = event__process_task, .fork = event__process_task, .lost = event__process_lost, + .ordered_samples = true, + .ordering_requires_timestamps = true, }; static void perf_session__insert_hist_entry_by_name(struct rb_root *root, diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index c1629dc..184c444 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -285,7 +285,7 @@ static void create_counter(int counter, int cpu) if (system_wide) attr->sample_type |= PERF_SAMPLE_CPU; - if (sample_time) + if (sample_time || system_wide || !no_inherit || cpu_list) attr->sample_type |= PERF_SAMPLE_TIME; if (raw_samples) { @@ -327,6 +327,9 @@ try_again: * Old kernel, no attr->sample_id_type_all field */ sample_id_all_avail = false; + if (!sample_time && !raw_samples) + attr->sample_type &= ~PERF_SAMPLE_TIME; + goto retry_sample_id; } diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index fd4c450..4af7ce6 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -244,6 +244,8 @@ static struct perf_event_ops event_ops = { .event_type = event__process_event_type, .tracing_data = event__process_tracing_data, .build_id = event__process_build_id, + .ordered_samples = true, + .ordering_requires_timestamps = true, }; extern volatile int session_done; -- 1.6.2.5 -- 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/