linux-stable.git/tools/perf/util/cache.h, branch linux-4.5.y

perf subcmd: Create subcmd library

2015-12-17T17:27:14+00:00

Move the subcommand-related files from perf to a new library named
libsubcmd.a.

Since we're moving files anyway, go ahead and rename 'exec_cmd.*' to
'exec-cmd.*' to be consistent with the naming of all the other files.

Signed-off-by: Josh Poimboeuf 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/c0a838d4c878ab17fee50998811612b2281355c1.1450193761.git.jpoimboe@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Provide subcmd configuration at runtime

2015-12-16T19:18:16+00:00

Create init functions for exec_cmd.c and pager.c.  This allows their
configuration to be specified at runtime so they can be split out into a
separate library which can be used by other programs.  Their
configuration is stored in a shared subcmd_config struct.

Signed-off-by: Josh Poimboeuf 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/21f5f6b38da72c985a8dcfa185700d03e7eecd1d.1450193761.git.jpoimboe@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Move strlcpy() from perf to tools/lib/string.c

2015-12-16T19:09:39+00:00

strlcpy() will be needed by the subcmd library.  Move it to the shared
tools/lib/string.c file which can be used by other tools.

Signed-off-by: Josh Poimboeuf 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/71e2804b973bf39ad3d3b9be10f99f2ea630be46.1450193761.git.jpoimboe@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Create pager.h

2015-12-14T15:19:40+00:00

Move the 'pager' function prototypes into a new pager.h so that the
pager code can be moved out to a library.

Signed-off-by: Josh Poimboeuf 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/ba7c316474dd6bfc047e5c6dc4dcab39a982caf5.1449965119.git.jpoimboe@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Remove unused pager_use_color variable

2015-12-09T16:42:02+00:00

Signed-off-by: Josh Poimboeuf 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/e540c61b3068761181db6d9b1b3411990bafdb2f.1449548395.git.jpoimboe@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo

perf report: Fix some option handling on --stdio

2015-05-14T13:05:22+00:00

There's a bug that perf report sometimes ignore some options on --stdio
output.  This bug is triggered only if a related config variable is set.
For example, let's assume we have a following config file.

  $ cat ~/.perfconfig
  [call-graph]
    print-type = graph
  [hist]
    percentage = absolute

Then, following perf config will not honor some options.

  $ perf record -ag sleep 1
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.199 MB perf.data (77 samples) ]

  $ perf report -g none --stdio
  # To display the perf.data header info, please use --header/--header-only options.
  #
  # Samples: 77  of event 'cycles'
  # Event count (approx.): 25425383
  #
  # Overhead  Command          Shared Object            Symbol
  # ........  ...............  .......................  ..............
  #
      16.34%  swapper          [kernel.vmlinux]         [k] intel_idle
                      |
                      ---intel_idle
                         cpuidle_enter_state
                         cpuidle_enter
                         cpu_startup_entry
   ...

With '-g none' option, it should not show callchains, but it still shows
callchains.  However it works as expected on --tui output.

Similarly, '--percentage relative' option is not work and still shows a
absolute percentage values.

Looking at the source, I found that those setting were overwritten by
config variables when setup_pager() called.  The setup_pager() is to
start a pager process so that it can manage long lines of output on the
stdio mode.  But as it calls the perf_config() after parsing arguments,
the settings were overwritten regardless of command line options.

The reason it calls perf_config() is to find the 'pager_program' which
might be set by a config variable, I guess.  However current perf code
does not provide the config variable for it, so it's just meaningless
IMHO.  Eliminating the call makes the option working as expected.

Signed-off-by: Namhyung Kim 
Cc: David Ahern 
Cc: Jiri Olsa 
Cc: Peter Zijlstra 
Cc: Taeung Song 
Link: http://lkml.kernel.org/r/1431529406-6762-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Make perf aware of tracefs

2015-02-11T15:37:08+00:00

As tracefs may be mounted instead of debugfs to get to the event
directories, have perf know about tracefs, and use that file system over
debugfs if it is present.

Signed-off-by: Steven Rostedt 
Acked-by: Jiri Olsa 
Cc: Andrew Morton 
Cc: Ingo Molnar 
Cc: Masami Hiramatsu 
Cc: Namhyung Kim 
Link: http://lkml.kernel.org/r/20150202193553.340946602@goodmis.org
[ Fixed up error messages about tracefs pointed out by Namhyung ]
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Elide strlcpy warning with uclibc

2015-01-16T20:49:29+00:00

   ----------------->8------------------
  CC       bench/sched-pipe.o
In file included from builtin-annotate.c:13:0:
util/cache.h:76:15: warning: redundant redeclaration of 'strlcpy'
[-Wredundant-decls]
 extern size_t strlcpy(char *dest, const char *src, size_t size);
               ^
In file included from util/util.h:55:0,
                 from builtin.h:4,
                 from builtin-annotate.c:8:
~/vineetg/arc/gnu/INSTALL_1412-arc-2014.12-rc1/arc-snps-linux-uclibc/sysroot/usr/include/string.h:396:15:
note: previous declaration of 'strlcpy' was here
 extern size_t strlcpy(char *__restrict dst, const char *__restrict src,
   ----------------->8------------------

Signed-off-by: Vineet Gupta 
Cc: Alexey Brodkin 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1421156604-30603-3-git-send-email-vgupta@synopsys.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add perf_config_u64 function

2014-08-12T15:03:00+00:00

Adding perf_config_u64 function to be able to parse 'llong' values out
of config file.

Signed-off-by: Jiri Olsa 
Acked-by: David Ahern 
Cc: Corey Ashford 
Cc: David Ahern 
Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Jean Pihet 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/n/tip-ni6gqdlvw7khp74r9htvklkb@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

tools/perf: Turn strlcpy() into a __weak function

2013-10-09T06:48:49+00:00

The strlcpy() feature check slows every build unnecessarily - so make it
a __weak function so it does not have to be auto-detected.

If the libc (or any other library) has an strlcpy() implementation it will
be used - otherwise our fallback is active.

Cc: Arnaldo Carvalho de Melo 
Cc: Peter Zijlstra 
Cc: Namhyung Kim 
Cc: David Ahern 
Cc: Jiri Olsa 
Link: http://lkml.kernel.org/n/tip-zjbrcupapu08ePsyYhhhxiwk@git.kernel.org
Signed-off-by: Ingo Molnar