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>
This commit is contained in:
Ingo Molnar 2009-06-02 23:37:05 +02:00
parent 0a520c63e1
commit bf9e187637
5 changed files with 62 additions and 57 deletions

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@ -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"

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@ -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"

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@ -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@redhat.com>
*

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@ -1,34 +1,9 @@
/*
* 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@redhat.com>
*
* Improvements and fixes by:
@ -41,9 +16,10 @@
*
* 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"

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@ -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"