linux-stable.git/tools/perf/util/scripting-engines/trace-event-python.c, branch v3.5

perf: Have perf use the new libtraceevent.a library

2012-04-25T11:28:48+00:00

The event parsing code in perf was originally copied from trace-cmd
but never was kept up-to-date with the changes that was done there.
The trace-cmd libtraceevent.a code is much more mature than what is
currently in perf.

This updates the code to use wrappers to handle the calls to the
new event parsing code. The new code requires a handle to be pass
around, which removes the global event variables and allows
more than one event structure to be read from different files
(and different machines).

But perf still has the old global events and the code throughout
perf does not yet have a nice way to pass around a handle.
A global 'pevent' has been made for perf and the old calls have
been created as wrappers to the new event parsing code that uses
the global pevent.

With this change, perf can later incorporate the pevent handle into
the perf structures and allow more than one file to be read and
compared, that contains different events.

Signed-off-by: Steven Rostedt 
Cc: Ingo Molnar 
Cc: Thomas Gleixner 
Cc: Peter Zijlstra 
Cc: Arnaldo Carvalho de Melo 
Cc: Steven Rostedt 
Cc: Borislav Petkov 
Cc: Jiri Olsa 
Cc: Arun Sharma 
Cc: Namhyung Kim 
Signed-off-by: Frederic Weisbecker

perf tools: Remove unnecessary ctype.h inclusion

2012-01-30T20:37:35+00:00

There are unnecessary #include  out there, and they might cause
a nasty build failure in some environment. As we already have most of
ctype macros in util.h, just get rid of them.

A few of exceptions are util/symbol.c which needs isupper() macro util.h
doesn't provide and perl scripting support code which includes ctype.h
internally.

Suggested-by: Ingo Molnar 
Cc: Ingo Molnar 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1327827356-8786-4-git-send-email-namhyung@gmail.com
Signed-off-by: Namhyung Kim 
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Resolve machine earlier and pass it to perf_event_ops

2011-11-28T12:39:12+00:00

Reducing the exposure of perf_session further, so that we can use the
classes in cases where no perf.data file is created.

Cc: David Ahern 
Cc: Frederic Weisbecker 
Cc: Mike Galbraith 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/n/tip-stua66dcscsezzrcdugvbmvd@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf session: Pass evsel in event_ops->sample()

2011-03-23T22:28:58+00:00

Resolving the sample->id to an evsel since the most advanced tools,
report and annotate, and the others will too when they evolve to
properly support multi-event perf.data files.

Good also because it does an extra validation, checking that the ID is
valid when present. When that is not the case, the overhead is just a
branch + function call (perf_evlist__id2evsel).

Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Mike Galbraith 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Cc: Tom Zanussi 
LKML-Reference: 
Signed-off-by: Arnaldo Carvalho de Melo

perf script: Change process_event prototype

2011-03-14T20:05:50+00:00

Prepare for handling of samples for any event type.

Acked-by: Frederic Weisbecker 
Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Thomas Gleixner 
LKML-Reference: <1299734608-5223-2-git-send-email-daahern@cisco.com>
Signed-off-by: David Ahern 
Signed-off-by: Arnaldo Carvalho de Melo

perf tool: Fix gcc 4.6.0 issues

2011-02-07T14:41:41+00:00

GCC 4.6.0 in Fedora rawhide turned up some compile errors in tools/perf
due to the -Werror=unused-but-set-variable flag.

I've gone through and annotated some of the assignments that had side
effects (ie: return value from a function) with the __used annotation,
and in some cases, just removed unused code.

In a few cases, we were assigning something useful, but not using it in
later parts of the function.

kyle@dreadnought:~/src% gcc --version
gcc (GCC) 4.6.0 20110122 (Red Hat 4.6.0-0.3)

Cc: Ingo Molnar 
LKML-Reference: <20110124161304.GK27353@bombadil.infradead.org>
Signed-off-by: Kyle McMartin 
[ committer note: Fixed up the annotation fixes, as that code moved recently ]
Signed-off-by: Arnaldo Carvalho de Melo

perf: Rename 'perf trace' to 'perf script'

2010-11-16T18:37:44+00:00

Free the perf trace name space and rename the trace to 'script' which is a
better match for the scripting engine.

Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

perf scripts python: Give field dict to unhandled callback

2010-06-01T09:12:35+00:00

trace_unhandled() callback does not allow to access event fields, this patch
resolves the problem.

It can also been used as a more pythonic and flexible way for script writters
to demux event types

This will for example greatly simplify pytimechart event demux.

Acked-by: Frederic Weisbecker 
Acked-by: Tom Zanussi 
Cc: Ingo Molnar ,
Cc: Frederic Weisbecker 
Cc: Tom Zanussi 
LKML-Reference: <1275340329-2397-1-git-send-email-tardyp@gmail.com>
Signed-off-by: Pierre Tardy 
Signed-off-by: Arnaldo Carvalho de Melo

perf/trace/scripting: don't show script start/stop messages by default

2010-05-10T22:50:59+00:00

Only print the script start/stop messages in verbose mode - users
normally don't care and it just clutters up the output.

Cc: Frédéric Weisbecker 
Cc: Ingo Molnar 
LKML-Reference: <1273466820-9330-7-git-send-email-tzanussi@gmail.com>
Signed-off-by: Tom Zanussi 
Signed-off-by: Arnaldo Carvalho de Melo

perf/scripts: Tuple was set from long in both branches in python_process_event()

2010-04-02T19:32:16+00:00

This is a fix to the signed/unsigned field handling in the
Python scripting engine, based on a patch from Roel Kluin.

Basically, Python wants to use a PyInt (which is internally a
long) if it can i.e. if the value will fit into that type.  If
not, it stores it into a PyLong, which isn't actually a long,
but an arbitrary-precision integer variable.

The code below is similar to to what Python does internally, and
it seems to work as expected on the x86 and x86_64 sytems I
tested it on.

Signed-off-by: Tom Zanussi 
Cc: Arnaldo Carvalho de Melo 
Cc: Roel Kluin 
Cc: Frederic Weisbecker 
Cc: rostedt@goodmis.org
LKML-Reference: <1270184305.6422.10.camel@tropicana>
Signed-off-by: Ingo Molnar