linux-stable.git/tools/perf/util/header.c, branch linux-4.7.y

perf tools: Use SBUILD_ID_SIZE where applicable

2016-05-11T16:06:06+00:00

Use the existing SBUILD_ID_SIZE macro instead of the equivalent
BUILD_ID_SIZE * 2 + 1 expression for allocating a buffer for build-id
strings.

Signed-off-by: Masami Hiramatsu 
Cc: Ananth N Mavinakayanahalli 
Cc: Brendan Gregg 
Cc: Hemant Kumar 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/20160511135159.23943.57120.stgit@devbox
Signed-off-by: Arnaldo Carvalho de Melo

perf header: Make topology checkers to check return value of strbuf

2016-05-10T14:57:22+00:00

Make topology checkers to check the return value of strbuf APIs so that
it can detect errors in it.

Signed-off-by: Masami Hiramatsu 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/20160510054735.6158.98650.stgit@devbox
Signed-off-by: Arnaldo Carvalho de Melo

perf test: Remove 'core_id' check in topo test

2016-03-11T16:45:04+00:00

The topology test case of 'perf test' seems to be broken on my x86
system - due to the comparison of a "core-id" with # of CPUs online.

There are 8 online CPUs:

	$ cat /sys/devices/system/cpu/online
	0-7

but core-ids are not sequential and some core-ids exceed the number
of online CPUs.

	$ cat /sys/devices/system/cpu/cpu?/topology/core_id
	0
	1
	9
	10
	0
	1
	9
	10

Looks like we can safely remove the check.  Output before:

	$ perf --version
	perf version 4.4.rc1.g34258a

	$ perf test -v topo
	36: Test topology in session                                 :
	--- start ---
	test child forked, pid 5906
	templ file: /tmp/perf-test-vCwWG3
	core_id number is too big.You may need to upgrade the perf tool.
	test child interrupted
	---- end ----
	Test topology in session: FAILED!

and after:

	$ perf test -v topo
	36: Test topology in session                                 :
	--- start ---
	test child forked, pid 6532
	templ file: /tmp/perf-test-y10wFJ
	CPU 0, core 0, socket 0
	CPU 1, core 1, socket 0
	CPU 2, core 9, socket 0
	CPU 3, core 10, socket 0
	CPU 4, core 0, socket 1
	CPU 5, core 1, socket 1
	CPU 6, core 9, socket 1
	CPU 7, core 10, socket 1
	test child finished with 0
	---- end ----
	Test topology in session: Ok

Signed-off-by: Sukadev Bhattiprolu 
Cc: Jan Stancek 
Cc: Jiri Olsa 
Cc: Kan Liang 
Link: http://lkml.kernel.org/r/20151203233219.GA27696@us.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add perf data cache feature

2016-02-16T20:13:00+00:00

Storing CPU cache details under perf data. It's stored as new
HEADER_CACHE feature and it's displayed under header info with -I
option:

  $ perf report --header-only -I
  ...
  # CPU cache info:
  #  L1 Data                 32K [0-1]
  #  L1 Instruction          32K [0-1]
  #  L1 Data                 32K [2-3]
  #  L1 Instruction          32K [2-3]
  #  L2 Unified             256K [0-1]
  #  L2 Unified             256K [2-3]
  #  L3 Unified            4096K [0-3]
  ...

All distinct caches are stored/displayed.

Signed-off-by: Jiri Olsa 
Tested-by: Arnaldo Carvalho de Melo 
Cc: David Ahern 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/20160216150143.GA7119@krava.brq.redhat.com
[ Fixed leak on process_caches(), s/cache_level/cpu_cache_level/g ]
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Introduce stat perf.data header feature

2015-12-17T18:15:14+00:00

Introducing the 'stat' feature to mark a perf.data as created by  the
'perf stat record' command. It contains no data.

It's needed so that the report tools (report/script) can differentiate
sampling data from counting data, because they need to be treated in a
different way.

In the future it might be used to store the version of the stat storage
system used.

Signed-off-by: Jiri Olsa 
Tested-by: Kan Liang 
Cc: David Ahern 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1445784728-21732-28-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add perf_event__fprintf_event_update function

2015-12-17T18:14:36+00:00

To display a 'event update' event for raw dump.

Signed-off-by: Jiri Olsa 
Tested-by: Kan Liang 
Cc: David Ahern 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1445784728-21732-26-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add event_update event cpus type

2015-12-17T18:13:38+00:00

Adding the cpumask 'event update' event, that stores/transfer the
cpumask for a event.

Signed-off-by: Jiri Olsa 
Tested-by: Kan Liang 
Cc: David Ahern 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1445784728-21732-25-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add event_update event name type

2015-12-17T18:12:46+00:00

Adding name type 'event update' event, that stores/transfer events name.
Event's name is stored within perf.data's EVENT_DESC feature, but we
don't have it if we get the report data from pipe.

Signed-off-by: Jiri Olsa 
Tested-by: Kan Liang 
Cc: David Ahern 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1445784728-21732-24-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add event_update event scale type

2015-12-17T18:11:59+00:00

A__allocdding scale type 'event update' event, that stores/transfer
events scale value. The PMU events can define the scale
value which is used to multiply events data.

Signed-off-by: Jiri Olsa 
Tested-by: Kan Liang 
Cc: David Ahern 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1445784728-21732-23-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add event_update event unit type

2015-12-17T18:11:10+00:00

Adding unit type 'event update' event, that stores/transfer events unit
name. The unit name is part of the perf stat output data.

Signed-off-by: Jiri Olsa 
Tested-by: Kan Liang 
Cc: David Ahern 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1445784728-21732-22-git-send-email-jolsa@kernel.org
[ Rename __alloc() to __new() for consistency ]
Signed-off-by: Arnaldo Carvalho de Melo