lkml.org 
[lkml]   [2015]   [Jun]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[tip:perf/urgent] perf evlist: Propagate cpu maps to evsels in an evlist
Commit-ID:  b7f0c203586b91419ff9aa9b1115e261082ff5b4
Gitweb: http://git.kernel.org/tip/b7f0c203586b91419ff9aa9b1115e261082ff5b4
Author: Jiri Olsa <jolsa@kernel.org>
AuthorDate: Tue, 23 Jun 2015 00:36:06 +0200
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Thu, 25 Jun 2015 15:15:51 -0300

perf evlist: Propagate cpu maps to evsels in an evlist

Propagate evlist's cpu_map object through all the evsel objects, while
keeping already configured evsel->cpus.

It'll be handy to access evsel's cpus directly in following patches.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435012588-9007-6-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/evlist.c | 25 ++++++++++++++++++++++++-
1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index a8d18a3..214affa 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -1101,6 +1101,29 @@ int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages,
return perf_evlist__mmap_ex(evlist, pages, overwrite, 0, false);
}

+static int perf_evlist__propagate_maps(struct perf_evlist *evlist,
+ struct target *target)
+{
+ struct perf_evsel *evsel;
+
+ evlist__for_each(evlist, evsel) {
+ /*
+ * We already have cpus for evsel (via PMU sysfs) so
+ * keep it, if there's no target cpu list defined.
+ */
+ if (evsel->cpus && target->cpu_list)
+ cpu_map__put(evsel->cpus);
+
+ if (!evsel->cpus || target->cpu_list)
+ evsel->cpus = cpu_map__get(evlist->cpus);
+
+ if (!evsel->cpus)
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
int perf_evlist__create_maps(struct perf_evlist *evlist, struct target *target)
{
evlist->threads = thread_map__new_str(target->pid, target->tid,
@@ -1117,7 +1140,7 @@ int perf_evlist__create_maps(struct perf_evlist *evlist, struct target *target)
if (evlist->cpus == NULL)
goto out_delete_threads;

- return 0;
+ return perf_evlist__propagate_maps(evlist, target);

out_delete_threads:
thread_map__put(evlist->threads);

\
 
 \ /
  Last update: 2015-06-26 11:01    [W:0.261 / U:0.092 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site