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Arnaldo Carvalho de Melo 69cf0218d1 perf hists: Print number of samples, not the period sum 
So that we match the header where we state the number of events with the
"Samples" column when using 'perf report -n/--show-nr-samples':

 [root@emilia ~]# perf record -a sleep 1
 [ perf record: Woken up 1 times to write data ]
 [ perf record: Captured and wrote 0.111 MB perf.data (~4860 samples) ]
 [root@emilia ~]# perf report --stdio --show-nr-samples
 # Events: 11  cycles
 #
 # Overhead  Samples        Command       Shared Object                        Symbol
 # ........ ..........  ...........  ..................  ............................
 #
     16.65%          1        sleep  [kernel.kallsyms]   [k] unmap_vmas
     16.10%          1         perf  libpthread-2.12.so  [.] __pthread_cleanup_push_defer
     15.79%          2         perf  [kernel.kallsyms]   [k] format_decode
     12.88%          1  kworker/1:2  [kernel.kallsyms]   [k] cache_reap
     10.69%          1      swapper  [kernel.kallsyms]   [k] _raw_spin_lock
      7.55%          1        sleep  [kernel.kallsyms]   [k] prepare_exec_creds
      6.00%          1         perf  [jbd2]              [k] start_this_handle
      5.29%          1         perf  [kernel.kallsyms]   [k] seq_read
      4.75%          1         perf  [kernel.kallsyms]   [k] get_pid_task
      4.30%          1         perf  [kernel.kallsyms]   [k] _raw_spin_unlock_irqrestore

 #
 # (For a higher level overview, try: perf report --sort comm,dso)
 #
 [root@emilia ~]#

Reported-by: Stephane Eranian <eranian@google.com>
Reported-by: Cliff Wickman <cpw@sgi.com>
Acked-by: Stephane Eranian <eranian@google.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
Cc: <stable@kernel.org>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
[ cherry-picked it from perf/core, as it has been reported by others as well. ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-02-25 10:55:03 +01:00
..
arch [S390] perf: add DWARF register lookup for s390 2011-01-05 12:47:31 +01:00
bench perf bench: Add feature that measures the performance of the arch/x86/lib/memcpy_64.S memcpy routines via 'perf bench mem' 2010-11-26 08:15:57 +01:00
Documentation perf record: Add "nodelay" mode, disabled by default 2011-01-13 11:38:44 -02:00
scripts perf script: Finish the rename from trace to script 2010-12-25 11:29:02 -02:00
util perf hists: Print number of samples, not the period sum 2011-02-25 10:55:03 +01:00
.gitignore perf tools: .gitignore += config.make config.make.autogen 2010-06-17 10:24:31 -03:00
builtin-annotate.c perf tools: Fix 64 bit integer format strings 2011-01-22 23:41:57 -02:00
builtin-bench.c perf options: Type check all the remaining OPT_ variants 2010-05-17 16:22:41 -03:00
builtin-buildid-cache.c perf buildid: add perfconfig option to specify buildid cache dir 2010-06-05 09:34:04 -03:00
builtin-buildid-list.c Merge commit 'v2.6.37-rc8' into perf/core 2011-01-04 08:08:54 +01:00
builtin-diff.c perf symbols: Add symfs option for off-box analysis using specified tree 2010-12-21 20:17:51 -02:00
builtin-help.c perf options: Type check all the remaining OPT_ variants 2010-05-17 16:22:41 -03:00
builtin-inject.c perf session: Fallback to unordered processing if no sample_id_all 2010-12-21 20:17:51 -02:00
builtin-kmem.c perf tools: Fix 64 bit integer format strings 2011-01-22 23:41:57 -02:00
builtin-kvm.c perf options: Type check all the remaining OPT_ variants 2010-05-17 16:22:41 -03:00
builtin-list.c perf list: Fix large list output by using the pager 2009-08-13 09:05:48 +02:00
builtin-lock.c perf tools: Fix 64 bit integer format strings 2011-01-22 23:41:57 -02:00
builtin-probe.c perf probe: Fix use of kernel image path given by 'k' option 2010-12-16 09:41:45 -02:00
builtin-record.c perf tools: Fix thread_map event synthesizing in top and record 2011-02-10 12:52:47 -02:00
builtin-report.c perf tools: Fix 64 bit integer format strings 2011-01-22 23:41:57 -02:00
builtin-sched.c perf tools: Fix 64 bit integer format strings 2011-01-22 23:41:57 -02:00
builtin-script.c perf tools: Fix 64 bit integer format strings 2011-01-22 23:41:57 -02:00
builtin-stat.c perf tools: Fix 64 bit integer format strings 2011-01-22 23:41:57 -02:00
builtin-test.c perf tools: Fix 64 bit integer format strings 2011-01-22 23:41:57 -02:00
builtin-timechart.c perf timechart: Adjust perf timechart to the new power events 2011-01-04 08:16:54 +01:00
builtin-top.c perf tools: Fix thread_map event synthesizing in top and record 2011-02-10 12:52:47 -02:00
builtin.h perf: Rename 'perf trace' to 'perf script' 2010-11-16 19:37:44 +01:00
command-list.txt Merge branch 'perf/rename' into perf/core 2010-12-01 09:22:19 +01:00
CREDITS perf_counter tools: Add CREDITS file for Git contributors 2009-06-24 19:54:29 +02:00
design.txt perf: Fix few typos + cosmetics 2010-01-13 17:39:44 +01:00
feature-tests.mak perf tools: Remove hardcoded include paths for elfutils 2010-11-19 16:38:04 -02:00
Makefile perf tools: Fix build by checking if extra warnings are supported 2011-01-22 19:29:53 -02:00
MANIFEST perf packaging: add memcpy to perf MANIFEST 2010-11-30 23:00:10 -02:00
perf-archive.sh perf buildid: add perfconfig option to specify buildid cache dir 2010-06-05 09:34:04 -03:00
perf.c perf evsel: Fix order of event list deletion 2011-01-11 12:51:03 -02:00
perf.h perf, MIPS: Support cross compiling of tools/perf for MIPS 2010-10-12 13:34:37 +02:00