kernel.git/tools/perf/util/evlist.c, branch linux-3.13.y

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

2013-11-14T19:10:27Z

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 tools: Remove trivial extra semincolon

2013-11-14T18:59:38Z

Accidentally ran into these, get rid of them. Signed-off-by: Davidlohr Bueso Link: http://lkml.kernel.org/r/1384323864.2527.8.camel@buesod1.americas.hpqcorp.net Signed-off-by: Arnaldo Carvalho de Melo

perf target: Shorten perf_target to target

2013-11-12T19:51:03Z

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 evlist: Refactor mmap_pages parsing

2013-11-12T19:33:22Z

Logic will be re-used for the out-pages argument for mmap based writes in perf-record. Signed-off-by: David Ahern Cc: Adrian Hunter Cc: Ingo Molnar Cc: Jiri Olsa Link: http://lkml.kernel.org/r/1384267617-3446-4-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo

perf evlist: Round mmap pages to power 2 - v2

2013-11-12T19:31:53Z

Currently perf requires the -m / --mmap_pages option to be a power of 2. To be more user friendly perf should automatically round this up to the next power of 2. Currently: $ perf record -m 3 -a -- sleep 1 --mmap_pages/-m value must be a power of two.sleep: Terminated With patch: $ perf record -m 3 -a -- sleep 1 rounding mmap pages size to 16384 (4 pages) ... v2: Add bytes units to rounding message per Ingo's request. Other suggestions (e.g., prefixing INFO) should be addressed by wrapping pr_info to catch all instances. Suggested-by: Ingo Molnar Signed-off-by: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Link: http://lkml.kernel.org/r/1384267617-3446-3-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo

perf record: Fix segfault with --no-mmap-pages

2013-11-12T19:30:54Z

Adrian reported a segfault when using --no-out-pages: $ tools/perf/perf record -vv --no-out-pages uname Segmentation fault (core dumped) The same occurs with --no-mmap-pages. Fix by checking that str is non-NULL before parsing it. Signed-off-by: David Ahern Reported-by: Adrian Hunter Cc: Adrian Hunter Cc: Ingo Molnar Cc: Jiri Olsa Link: http://lkml.kernel.org/r/1384267617-3446-2-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo

perf evsel: Remove idx parm from constructor

2013-11-11T18:56:39Z

Most uses of the evsel constructor are followed by a call to perf_evlist__add with an idex of evlist->nr_entries, so make rename the current constructor to perf_evsel__new_idx and remove the need for passing the constructor for the common case. We still need the new_idx variant because the way groups are handled, with evsel->nr_members holding the number of entries in an evlist, partitioning the evlist into sublists inside a single linked list. This asks for a clarifying refactoring, but for now simplify the non parser cases, so that tool writers don't have to bother with evsel idx setting. 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-zy9tskx6jqm2rmw7468zze2a@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf evsel: Ditch evsel->handler.data field

2013-11-07T13:40:47Z

Not needed since this cset: fcf65bf149af: perf evsel: Cache associated event_format So lets trim this struct a bit. 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-j8setslokt0goiwxq9dogzqm@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf evlist: Add a debug print if event buffer mmap fails

2013-11-04T15:21:41Z

Add a debug print if mmap of the perf event ring buffer fails. 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/1383313899-15987-6-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

Merge branch 'perf/urgent' into perf/core

2013-10-29T10:23:32Z

Conflicts: tools/perf/builtin-record.c tools/perf/builtin-top.c tools/perf/util/hist.h