linux.git/tools/perf/util/scripting-engines, branch v3.17

perf tools: Move pr_* debug macros into debug object

2014-07-17T15:58:39+00:00

Moving pr_* debug macros to have it with in same object as debug
variables, becase we will change them to use verbose variable in next
patch.

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/1405374411-29012-3-git-send-email-jolsa@kernel.org
[ Add missing debug.h include in python scripting glue and in the libdw unwind lib ]
Signed-off-by: Arnaldo Carvalho de Melo

perf script: Provide additional sample information on generic events

2014-07-16T20:57:33+00:00

To python scripts, including pid, tid, and cpu for which the event was
recorded.

At the moment, the pointer to the sample struct is passed to scripts,
which seems to be of little use.

The patch puts this information in dictionaries for easy access by
Python scripts.

Signed-off-by: Joseph Schuchart 
Acked-by: Thomas Ilsche 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Thomas Ilsche 
Link: http://lkml.kernel.org/r/53BE7E20.8080500@tu-dresden.de
Signed-off-by: Arnaldo Carvalho de Melo

perf script: Add callchain to generic and tracepoint events

2014-07-16T20:57:33+00:00

This provides valuable information for tracing performance problems.

Since this change alters the interface for the python scripts, also
adjust the script generation and the provided scripts.

Signed-off-by: Joseph Schuchart 
Acked-by: Thomas Ilsche 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Thomas Ilsche 
Link: http://lkml.kernel.org/r/53BE7E1B.10503@tu-dresden.de
Signed-off-by: Arnaldo Carvalho de Melo

perf script: Add missing calls to Py_DECREF for return values

2014-07-16T20:57:33+00:00

Signed-off-by: Joseph Schuchart 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Thomas Ilsche 
Link: http://lkml.kernel.org/r/53BD4EBF.5050407@tu-dresden.de
Signed-off-by: Arnaldo Carvalho de Melo

perf script: Handle the num array type in python properly

2014-06-27T09:15:02+00:00

The raw_syscalls:sys_enter tracer for instance passes has one argument
named 'arg' which is an array of 6 integers. Right the python scripts
gets only 0 passed as an argument. The reason is that
pevent_read_number() can not handle data types of 48 and returns always
0.
This patch changes this by passing num array as list of nums which fit
the description. As a result python will now see a list named arg which
contains 6 (integer) items.

Signed-off-by: Sebastian Andrzej Siewior 
Acked-by: Namhyung Kim 
Link: http://lkml.kernel.org/n/1401207274-8170-2-git-send-email-bigeasy@linutronix.de
Signed-off-by: Jiri Olsa

perf script: Move the number processing into its own function

2014-06-27T09:14:57+00:00

I was going to change something here and the result was so much on the
right side of the screen that I decided to move that piece into its own
function.
This patch should make no function change except the moving the code
into its own function.

Signed-off-by: Sebastian Andrzej Siewior 
Acked-by: Namhyung Kim 
Link: http://lkml.kernel.org/n/1401207274-8170-1-git-send-email-bigeasy@linutronix.de
Signed-off-by: Jiri Olsa

perf script/python: Print array argument as string

2014-06-09T10:21:03+00:00

With the Sebastian's change of handling num array argument (of raw
syscall enter), the script still failed to work like this:

  $ perf record -e raw_syscalls:* sleep 1
  $ perf script -g python
  $ perf script -s perf-script.py
  ...
  Traceback (most recent call last):
    File "perf-script.py", line 42, in raw_syscalls__sys_enter
      (id, args),
  TypeError: %u format: a number is required, not list
  Fatal Python error: problem in Python trace event handler
  Aborted (core dumped)

This is because the generated script tries to print the array arg as
unsigned integer (%u).  Since the python seems to convert arguments to
strings by default, just using %s solved the problem for me.

Signed-off-by: Namhyung Kim 
Cc: Tom Zanussi 
Cc: Sebastian Andrzej Siewior 
Link: http://lkml.kernel.org/r/1401338695-18837-1-git-send-email-namhyung@kernel.org
Signed-off-by: Jiri Olsa

tools lib traceevent: Added support for __get_bitmask() macro

2014-06-07T21:33:37+00:00

Coming in v3.16, trace events will be able to save bitmasks in raw
format in the ring buffer and output it with the __get_bitmask() macro.

In order for userspace tools to parse this, it must be able to handle
the __get_bitmask() call and be able to convert the data that's in
the ring buffer into a nice bitmask format. The output is similar to
what the kernel uses to print bitmasks, with a comma separator every
4 bytes (8 characters).

This allows for cpumasks to also be saved efficiently.

The first user is the thermal:thermal_power_limit event which has the
following output:

 thermal_power_limit:  cpus=0000000f freq=1900000 cdev_state=0 power=5252

Link: http://lkml.kernel.org/r/20140506132238.22e136d1@gandalf.local.home

Suggested-by: Javi Merino 
Signed-off-by: Steven Rostedt 
Acked-by: Namhyung Kim 
Tested-by: Javi Merino 
Link: http://lkml.kernel.org/r/20140603032224.229186537@goodmis.org
Signed-off-by: Jiri Olsa

perf tools: No need to test against NULL before calling free()

2013-12-26T18:58:52+00:00

Its perfectly fine to call free(NULL), so no need to clutter the source
code with all those superfluous testing.

Cc: Adrian Hunter 
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-uux5wpvevlerd42gqer13e7n@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf symbols: Add 'machine' member to struct addr_location

2013-12-19T20:38:27+00:00

The addr_location struct should fully qualify an address, and to do that
it should have in it the machine where the thread was found.

Thus all functions that receive an addr_location now don't need to also
receive a 'machine', those functions just need to access al->machine
instead, just like it does with the other parts of an address location:
al->thread, al->map, etc.

Cc: Adrian Hunter 
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-o51iiee7vyq4r3k362uvuylg@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo