linux-toradex.git/tools/perf/builtin-record.c, branch v3.13.2

perf record: Add an option to force per-cpu mmaps

2013-11-14T19:10:27+00:00

By default, when tasks are specified (i.e. -p, -t or -u options)
per-thread mmaps are created.

Add an option to override that and force per-cpu mmaps.

Further comments by peterz:

So this option allows -t/-p/-u to create one buffer per cpu and attach
all the various thread/process/user tasks' their counters to that one
buffer?

As opposed to the current state where each such counter would have its
own buffer.

Signed-off-by: Adrian Hunter 
Tested-by: Sukadev Bhattiprolu 
Acked-by: Peter Zijlstra 
Cc: David Ahern 
Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Mike Galbraith 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/r/1383313899-15987-7-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo

perf target: Shorten perf_target to target

2013-11-12T19:51:03+00:00

Getting unwieldly long, for this app domain should be descriptive enough
and the use of __ to separate the class from the method names should
help with avoiding clashes with other code bases.

Reported-by: David Ahern 
Suggested-by: Ingo Molnar 
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/r/20131112113427.GA4053@ghostprotocols.net
Signed-off-by: Arnaldo Carvalho de Melo

perf record: Move existing write_output into helper function

2013-11-11T18:56:40+00:00

Code move only; no logic changes. In preparation for the mmap based
output option in the next patch.

Signed-off-by: David Ahern 
Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Mike Galbraith 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/r/1383884605-30968-2-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo

perf record: Use correct return type for write()

2013-11-11T18:56:40+00:00

write() returns a 'ssize_t' not an 'int'.

Signed-off-by: Adrian Hunter 
Cc: David Ahern 
Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Mike Galbraith 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/r/1383906470-21002-1-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo

perf machine: Simplify synthesize_threads method

2013-11-11T18:56:40+00:00

Several tools (top, kvm) don't need to be called back to process each of
the syntheiszed records, instead relying on the machine__process_event
function to change the per machine data structures that represent
threads and mmaps, so provide a way to ask for this common idiom.

Cc: Adrian Hunter 
Cc: David Ahern 
Cc: Frederic Weisbecker 
Cc: Jiri Olsa 
Cc: Mike Galbraith 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/n/tip-pusqibp8n3c4ynegd1frn4zd@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf machine: Introduce synthesize_threads method out of open coded equivalent

2013-11-11T18:56:39+00:00

Further simplifications to be done on following patch, as most tools
don't use the callback, using instead just the canned
machine__process_event one.

Cc: Adrian Hunter 
Cc: David Ahern 
Cc: Frederic Weisbecker 
Cc: Jiri Olsa 
Cc: Mike Galbraith 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/n/tip-r1m0vuuj3cat4bampno9yc8d@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf record: Synthesize non-exec MMAP records when --data used

2013-11-11T18:56:39+00:00

When perf_event_attr.mmap_data is set the kernel will generate
PERF_RECORD_MMAP events when non-exec (data, SysV mem) mmaps are
created, so we need to synthesize from /proc/pid/maps for existing
threads, as we do for exec mmaps.

Right now just 'perf record' does it, but any other tool that uses
perf_event__synthesize_thread(s|map) can request it.

Reported-by: Don Zickus 
Tested-by: Don Zickus 
Cc: Adrian Hunter 
Cc: Bill Gray 
Cc: David Ahern 
Cc: Don Zickus 
Cc: Frederic Weisbecker 
Cc: Jiri Olsa 
Cc: Joe Mario 
Cc: Mike Galbraith 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Richard Fowles 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/n/tip-ihwzraikx23ian9txinogvv2@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf record: Remove post_processing_offset variable

2013-11-07T14:01:59+00:00

Duplicates the data_offset from header in the session.

Signed-off-by: David Ahern 
Acked-by: Ingo Molnar 
Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Mike Galbraith 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/r/1383763297-27066-4-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo

perf record: Remove advance_output function

2013-11-07T13:43:15+00:00

1 line function with only 1 user; might as well embed directly.

Signed-off-by: David Ahern 
Suggested-by: Ingo Molnar 
Acked-by: Ingo Molnar 
Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/r/1383763297-27066-3-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo

perf record: Refactor feature handling into a separate function

2013-11-07T13:42:26+00:00

Code move only. No logic changes.

Signed-off-by: David Ahern 
Acked-by: Ingo Molnar 
Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/r/1383763297-27066-2-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo

linux-toradex.git/tools/perf/builtin-record.c, branch v3.13.2

perf record: Add an option to force per-cpu mmaps

perf target: Shorten perf_target__ to target__

perf record: Move existing write_output into helper function

perf record: Use correct return type for write()

perf machine: Simplify synthesize_threads method

perf machine: Introduce synthesize_threads method out of open coded equivalent

perf record: Synthesize non-exec MMAP records when --data used

perf record: Remove post_processing_offset variable

perf record: Remove advance_output function

perf record: Refactor feature handling into a separate function

perf target: Shorten perf_target to target