linux-stable.git/tools/perf/util/debug.c, branch linux-3.19.y

perf tools: Allow to force redirect pr_debug to stderr.

2014-11-24T21:03:48+00:00

When debugging the tui browser I find it useful to redirect the debug
log into a file. Currently it's always forced to the message line.

Add an option to force it to stderr. Then it can be easily redirected.

Example:

  [root@zoo ~]# perf --debug stderr report -vv 2> /tmp/debug
  [root@zoo ~]# tail /tmp/debug
  dso open failed, mmap: No such file or directory
  dso open failed, mmap: No such file or directory
  dso open failed, mmap: No such file or directory
  dso open failed, mmap: No such file or directory
  dso open failed, mmap: No such file or directory
  Using /root/.debug/.build-id/4e/841948927029fb650132253642d5dbb2c1fb93 for symbols
  Failed to open /tmp/perf-8831.map, continuing without symbols
  Failed to open /tmp/perf-12721.map, continuing without symbols
  Failed to open /tmp/perf-6966.map, continuing without symbols
  Failed to open /tmp/perf-8802.map, continuing without symbols
  [root@zoo ~]#

Signed-off-by: Andi Kleen 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Link: http://lkml.kernel.org/r/1416605880-25055-2-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add debug prints for ordered events queue

2014-08-12T15:03:01+00:00

Adding some prints for ordered events queue, to help debug issues.

Adding debug_ordered_events debug variable to be able to enable ordered
events debug messages using:

  $ perf --debug ordered-events=2 report ...

Also using oe pointer in perf_session__queue_event instead of chained
session variable dereferencing.

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-7p3mnnopjvsp9nmk9msqcfkm@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add --debug optionto set debug variable

2014-07-17T15:58:59+00:00

Adding --debug option as a way to setup debug variables.  Starting with
support for verbose, more will come.

It's possible to use it now with report command:
  $ perf --debug verbose   ...
  $ perf --debug verbose=2 ...

I'll need this support to add separated debug variable for ordered
events change in order to separate debug output out of standard verbose
stream.

Signed-off-by: Jiri Olsa 
Cc: Corey Ashford 
Cc: David Ahern 
Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/20140717105500.GG516@krava.redhat.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Factor eprintf to allow different debug variables

2014-07-17T15:58:59+00:00

This way we can easily reuse current debug functions for another debug
variables other than verbose.
Signed-off-by: Jiri Olsa 

Cc: Corey Ashford 
Cc: David Ahern 
Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1405374411-29012-4-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Get rid of a duplicate va_end() in error reporting routine

2013-12-19T14:38:42+00:00

The va_end() in _eprintf() should be removed since the caller also
invokes va_end().

Signed-off-by: Namhyung Kim 
Acked-by: Jiri Olsa 
Cc: David Ahern 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1387436411-20160-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Overload pr_stat traceevent print function

2013-12-04T18:23:55+00:00

The traceevent lib uses pr_stat to display all standard info. It's
defined as __weak. Overloading it with perf version plugged into perf
output system logic.

Displaying the pr_stat stuff under '-v' option.

Signed-off-by: Jiri Olsa 
Cc: Corey Ashford 
Cc: David Ahern 
Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Steven Rostedt 
Link: http://lkml.kernel.org/r/1386076182-14484-12-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Fix TUI helpline output

2012-12-09T11:46:07+00:00

In commit e2f4351 "perf ui/helpline: Introduce ui_helpline__vshow()" the
test for the browser used made ui_helpline__vshow() to be called only
for the GTK browser.

The TUI one then was not used and vfprintf(stderr, ...) was used
instead, making the TUI scroll the screen instead of just printing on
the last line.

Fix it by doing the proper check, that is to call ui_helpline__vshow to
be called for both the TUI and GTK browsers.

Cc: David Ahern 
Cc: Frederic Weisbecker 
Cc: Jiri Olsa 
Cc: Mike Galbraith 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/n/tip-iad0nw09x4orhmn0uzz4ljx3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf ui/helpline: Introduce ui_helpline__vshow()

2012-12-09T11:46:04+00:00

The ui_helpline__vshow() will be used for pr_* functions.

Signed-off-by: Namhyung Kim 
Cc: Andi Kleen 
Cc: David Ahern 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Pekka Enberg 
Cc: Peter Zijlstra 
Cc: Steven Rostedt 
Link: http://lkml.kernel.org/r/1352911664-24620-3-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf ui: Always compile error printing code

2012-12-09T11:46:04+00:00

It is used everywhere so always build it regardless of ui engine.

Signed-off-by: Namhyung Kim 
Cc: Andi Kleen 
Cc: David Ahern 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Pekka Enberg 
Cc: Peter Zijlstra 
Cc: Steven Rostedt 
Link: http://lkml.kernel.org/r/1352911664-24620-2-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Convert to GTK2_SUPPORT

2012-10-02T21:36:23+00:00

For building perf without gtk+2, we can set NO_GTK2=1 as a argument of
make.  It then defines NO_GTK2_SUPPORT macro for C code to do the
proper handling.  However it usually used in a negative semantics -
e.g. #ifndef - so we saw double negations which can be misleading.
Convert it to a positive form to make it more readable.

Signed-off-by: Namhyung Kim 
Cc: Ingo Molnar 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1348824728-14025-8-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo