[tip:perf/core] perf evlist: Add backpointer for perf_env to evlist

From: tip-bot for Kan Liang
Date: Mon Aug 31 2015 - 04:34:04 EST

Commit-ID: 2c07144dfce366e21465cc7b0ada9f0b6dc7b7ed
Gitweb: http://git.kernel.org/tip/2c07144dfce366e21465cc7b0ada9f0b6dc7b7ed
Author: Kan Liang <kan.liang@xxxxxxxxx>
AuthorDate: Fri, 28 Aug 2015 05:48:05 -0400
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Fri, 28 Aug 2015 14:54:14 -0300

perf evlist: Add backpointer for perf_env to evlist

Add backpointer to perf_env in evlist, so we can easily access env when
processing something where we have a evsel or evlist.

Suggested-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Signed-off-by: Kan Liang <kan.liang@xxxxxxxxx>
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1440755289-30939-5-git-send-email-kan.liang@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
tools/perf/util/evlist.h | 1 +
tools/perf/util/header.c | 1 +
2 files changed, 2 insertions(+)

diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index 436e358..b39a619 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -56,6 +56,7 @@ struct perf_evlist {
struct cpu_map *cpus;
struct perf_evsel *selected;
struct events_stats stats;
+ struct perf_env *env;

struct perf_evsel_str_handler {
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 179b2bd..4181454 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -2514,6 +2514,7 @@ int perf_session__read_header(struct perf_session *session)
if (session->evlist == NULL)
return -ENOMEM;

+ session->evlist->env = &header->env;
if (perf_data_file__is_pipe(file))
return perf_header__read_pipe(session);

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