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Date: Tue, 2 Jun 2009 22:42:47 GMT From: tip-bot for Ingo Molnar <mingo@...e.hu> To: linux-tip-commits@...r.kernel.org Cc: linux-kernel@...r.kernel.org, acme@...hat.com, paulus@...ba.org, hpa@...or.com, mingo@...hat.com, jkacur@...hat.com, a.p.zijlstra@...llo.nl, efault@....de, mtosatti@...hat.com, tglx@...utronix.de, cjashfor@...ux.vnet.ibm.com, mingo@...e.hu Subject: [tip:perfcounters/core] perf_counter tools: Make source code headers more coherent Commit-ID: bf9e187637ca3d85cee7407e3af93995868cc87c Gitweb: http://git.kernel.org/tip/bf9e187637ca3d85cee7407e3af93995868cc87c Author: Ingo Molnar <mingo@...e.hu> AuthorDate: Tue, 2 Jun 2009 23:37:05 +0200 Committer: Ingo Molnar <mingo@...e.hu> CommitDate: Tue, 2 Jun 2009 23:37:05 +0200 perf_counter tools: Make source code headers more coherent The perf commands had different ways of describing themselves, introduce a coherent command-file-header format taken from the Git project. Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl> Cc: Mike Galbraith <efault@....de> Cc: Paul Mackerras <paulus@...ba.org> Cc: Corey Ashford <cjashfor@...ux.vnet.ibm.com> Cc: Marcelo Tosatti <mtosatti@...hat.com> Cc: Arnaldo Carvalho de Melo <acme@...hat.com> Cc: Thomas Gleixner <tglx@...utronix.de> Cc: John Kacur <jkacur@...hat.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@...e.hu> --- Documentation/perf_counter/builtin-record.c | 11 ++++- Documentation/perf_counter/builtin-report.c | 10 ++++- Documentation/perf_counter/builtin-stat.c | 29 ++++++++----- Documentation/perf_counter/builtin-top.c | 60 ++++++++------------------- Documentation/perf_counter/perf.c | 9 ++++ 5 files changed, 62 insertions(+), 57 deletions(-) diff --git a/Documentation/perf_counter/builtin-record.c b/Documentation/perf_counter/builtin-record.c index 8feb119..2741b35 100644 --- a/Documentation/perf_counter/builtin-record.c +++ b/Documentation/perf_counter/builtin-record.c @@ -1,9 +1,14 @@ /* - * perf record: Record the profile of a workload (or a CPU, or a PID) into - * the perf.data output file - for later analysis via perf report. + * builtin-record.c + * + * Builtin record command: Record the profile of a workload + * (or a CPU, or a PID) into the perf.data output file - for + * later analysis via perf report. */ -#include "perf.h" #include "builtin.h" + +#include "perf.h" + #include "util/util.h" #include "util/parse-options.h" #include "util/parse-events.h" diff --git a/Documentation/perf_counter/builtin-report.c b/Documentation/perf_counter/builtin-report.c index 270e986..9da990f 100644 --- a/Documentation/perf_counter/builtin-report.c +++ b/Documentation/perf_counter/builtin-report.c @@ -1,6 +1,14 @@ -#include "util/util.h" +/* + * builtin-report.c + * + * Builtin report command: Analyze the perf.data input file, + * look up and read DSOs and symbol information and display + * a histogram of results, along various sorting keys. + */ #include "builtin.h" +#include "util/util.h" + #include "util/list.h" #include "util/cache.h" #include "util/rbtree.h" diff --git a/Documentation/perf_counter/builtin-stat.c b/Documentation/perf_counter/builtin-stat.c index 27abe6a..2357a66 100644 --- a/Documentation/perf_counter/builtin-stat.c +++ b/Documentation/perf_counter/builtin-stat.c @@ -1,20 +1,27 @@ /* - * perf stat: /usr/bin/time -alike performance counter statistics utility + * builtin-stat.c + * + * Builtin stat command: Give a precise performance counters summary + * overview about any workload, CPU or specific PID. + * + * Sample output: - It summarizes the counter events of all tasks (and child tasks), - covering all CPUs that the command (or workload) executes on. - It only counts the per-task events of the workload started, - independent of how many other tasks run on those CPUs. + $ perf stat ~/hackbench 10 + Time: 0.104 - Sample output: + Performance counter stats for '/home/mingo/hackbench': - $ perf stat -e 1 -e 3 -e 5 ls -lR /usr/include/ >/dev/null + 1255.538611 task clock ticks # 10.143 CPU utilization factor + 54011 context switches # 0.043 M/sec + 385 CPU migrations # 0.000 M/sec + 17755 pagefaults # 0.014 M/sec + 3808323185 CPU cycles # 3033.219 M/sec + 1575111190 instructions # 1254.530 M/sec + 17367895 cache references # 13.833 M/sec + 7674421 cache misses # 6.112 M/sec - Performance counter stats for 'ls': + Wall-clock time elapsed: 123.786620 msecs - 163516953 instructions - 2295 cache-misses - 2855182 branch-misses * * Copyright (C) 2008, Red Hat Inc, Ingo Molnar <mingo@...hat.com> * diff --git a/Documentation/perf_counter/builtin-top.c b/Documentation/perf_counter/builtin-top.c index 5029d8e..a639352 100644 --- a/Documentation/perf_counter/builtin-top.c +++ b/Documentation/perf_counter/builtin-top.c @@ -1,49 +1,25 @@ /* - * kerneltop.c: show top kernel functions - performance counters showcase - - Build with: - - make -C Documentation/perf_counter/ - - Sample output: - ------------------------------------------------------------------------------- - KernelTop: 2669 irqs/sec [cache-misses/cache-refs], (all, cpu: 2) ------------------------------------------------------------------------------- - - weight RIP kernel function - ______ ________________ _______________ - - 35.20 - ffffffff804ce74b : skb_copy_and_csum_dev - 33.00 - ffffffff804cb740 : sock_alloc_send_skb - 31.26 - ffffffff804ce808 : skb_push - 22.43 - ffffffff80510004 : tcp_established_options - 19.00 - ffffffff8027d250 : find_get_page - 15.76 - ffffffff804e4fc9 : eth_type_trans - 15.20 - ffffffff804d8baa : dst_release - 14.86 - ffffffff804cf5d8 : skb_release_head_state - 14.00 - ffffffff802217d5 : read_hpet - 12.00 - ffffffff804ffb7f : __ip_local_out - 11.97 - ffffffff804fc0c8 : ip_local_deliver_finish - 8.54 - ffffffff805001a3 : ip_queue_xmit + * builtin-top.c + * + * Builtin top command: Display a continuously updated profile of + * any workload, CPU or specific PID. + * + * Copyright (C) 2008, Red Hat Inc, Ingo Molnar <mingo@...hat.com> + * + * Improvements and fixes by: + * + * Arjan van de Ven <arjan@...ux.intel.com> + * Yanmin Zhang <yanmin.zhang@...el.com> + * Wu Fengguang <fengguang.wu@...el.com> + * Mike Galbraith <efault@....de> + * Paul Mackerras <paulus@...ba.org> + * + * Released under the GPL v2. (and only v2, not any later version) */ - - /* - * Copyright (C) 2008, Red Hat Inc, Ingo Molnar <mingo@...hat.com> - * - * Improvements and fixes by: - * - * Arjan van de Ven <arjan@...ux.intel.com> - * Yanmin Zhang <yanmin.zhang@...el.com> - * Wu Fengguang <fengguang.wu@...el.com> - * Mike Galbraith <efault@....de> - * Paul Mackerras <paulus@...ba.org> - * - * Released under the GPL v2. (and only v2, not any later version) - */ +#include "builtin.h" #include "perf.h" -#include "builtin.h" + #include "util/symbol.h" #include "util/util.h" #include "util/rbtree.h" diff --git a/Documentation/perf_counter/perf.c b/Documentation/perf_counter/perf.c index e8a8584..ec7edb7 100644 --- a/Documentation/perf_counter/perf.c +++ b/Documentation/perf_counter/perf.c @@ -1,4 +1,13 @@ +/* + * perf.c + * + * Performance analysis utility. + * + * This is the main hub from which the sub-commands (perf stat, + * perf top, perf record, perf report, etc.) are started. + */ #include "builtin.h" + #include "util/exec_cmd.h" #include "util/cache.h" #include "util/quote.h" -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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