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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@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: John Kacur <jkacur@redhat.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar
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bf9e187637
5 changed files with 62 additions and 57 deletions
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/*
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* perf record: Record the profile of a workload (or a CPU, or a PID) into
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* the perf.data output file - for later analysis via perf report.
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* builtin-record.c
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*
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* Builtin record command: Record the profile of a workload
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* (or a CPU, or a PID) into the perf.data output file - for
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* later analysis via perf report.
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*/
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#include "perf.h"
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#include "builtin.h"
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#include "perf.h"
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#include "util/util.h"
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#include "util/parse-options.h"
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#include "util/parse-events.h"
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@ -1,6 +1,14 @@
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#include "util/util.h"
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/*
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* builtin-report.c
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*
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* Builtin report command: Analyze the perf.data input file,
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* look up and read DSOs and symbol information and display
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* a histogram of results, along various sorting keys.
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*/
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#include "builtin.h"
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#include "util/util.h"
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#include "util/list.h"
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#include "util/cache.h"
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#include "util/rbtree.h"
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@ -1,20 +1,27 @@
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/*
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* perf stat: /usr/bin/time -alike performance counter statistics utility
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* builtin-stat.c
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*
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* Builtin stat command: Give a precise performance counters summary
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* overview about any workload, CPU or specific PID.
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*
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* Sample output:
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It summarizes the counter events of all tasks (and child tasks),
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covering all CPUs that the command (or workload) executes on.
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It only counts the per-task events of the workload started,
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independent of how many other tasks run on those CPUs.
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$ perf stat ~/hackbench 10
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Time: 0.104
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Sample output:
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Performance counter stats for '/home/mingo/hackbench':
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$ perf stat -e 1 -e 3 -e 5 ls -lR /usr/include/ >/dev/null
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1255.538611 task clock ticks # 10.143 CPU utilization factor
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54011 context switches # 0.043 M/sec
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385 CPU migrations # 0.000 M/sec
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17755 pagefaults # 0.014 M/sec
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3808323185 CPU cycles # 3033.219 M/sec
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1575111190 instructions # 1254.530 M/sec
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17367895 cache references # 13.833 M/sec
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7674421 cache misses # 6.112 M/sec
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Performance counter stats for 'ls':
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Wall-clock time elapsed: 123.786620 msecs
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163516953 instructions
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2295 cache-misses
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2855182 branch-misses
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*
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* Copyright (C) 2008, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
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*
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@ -1,49 +1,25 @@
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/*
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* kerneltop.c: show top kernel functions - performance counters showcase
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Build with:
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make -C Documentation/perf_counter/
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Sample output:
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------------------------------------------------------------------------------
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KernelTop: 2669 irqs/sec [cache-misses/cache-refs], (all, cpu: 2)
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------------------------------------------------------------------------------
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weight RIP kernel function
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______ ________________ _______________
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35.20 - ffffffff804ce74b : skb_copy_and_csum_dev
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33.00 - ffffffff804cb740 : sock_alloc_send_skb
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31.26 - ffffffff804ce808 : skb_push
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22.43 - ffffffff80510004 : tcp_established_options
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19.00 - ffffffff8027d250 : find_get_page
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15.76 - ffffffff804e4fc9 : eth_type_trans
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15.20 - ffffffff804d8baa : dst_release
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14.86 - ffffffff804cf5d8 : skb_release_head_state
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14.00 - ffffffff802217d5 : read_hpet
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12.00 - ffffffff804ffb7f : __ip_local_out
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11.97 - ffffffff804fc0c8 : ip_local_deliver_finish
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8.54 - ffffffff805001a3 : ip_queue_xmit
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* builtin-top.c
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*
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* Builtin top command: Display a continuously updated profile of
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* any workload, CPU or specific PID.
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*
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* Copyright (C) 2008, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
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*
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* Improvements and fixes by:
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*
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* Arjan van de Ven <arjan@linux.intel.com>
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* Yanmin Zhang <yanmin.zhang@intel.com>
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* Wu Fengguang <fengguang.wu@intel.com>
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* Mike Galbraith <efault@gmx.de>
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* Paul Mackerras <paulus@samba.org>
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*
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* Released under the GPL v2. (and only v2, not any later version)
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*/
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/*
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* Copyright (C) 2008, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
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*
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* Improvements and fixes by:
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*
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* Arjan van de Ven <arjan@linux.intel.com>
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* Yanmin Zhang <yanmin.zhang@intel.com>
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* Wu Fengguang <fengguang.wu@intel.com>
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* Mike Galbraith <efault@gmx.de>
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* Paul Mackerras <paulus@samba.org>
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*
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* Released under the GPL v2. (and only v2, not any later version)
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*/
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#include "builtin.h"
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#include "perf.h"
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#include "builtin.h"
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#include "util/symbol.h"
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#include "util/util.h"
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#include "util/rbtree.h"
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@ -1,4 +1,13 @@
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/*
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* perf.c
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*
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* Performance analysis utility.
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*
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* This is the main hub from which the sub-commands (perf stat,
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* perf top, perf record, perf report, etc.) are started.
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*/
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#include "builtin.h"
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#include "util/exec_cmd.h"
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#include "util/cache.h"
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#include "util/quote.h"
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