Em Mon, Mar 30, 2015 at 08:45:33PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Mon, Mar 30, 2015 at 04:51:34PM -0600, David Ahern escreveu:
> > tool was moved to ordered_events and is not initialized for pipe mode. I
> > don't have time to look into it more than that before PTO on Wednesday.
 
> I guess this one is enough, no? Checking with your example...

So the following is better, can you give it a try, please?

- Arnaldo


>From fbd7d154f01c47db71a3d8b0546911872aa1de54 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <a...@redhat.com>
Date: Tue, 31 Mar 2015 09:53:50 -0300
Subject: [PATCH 1/1] perf session: Always initialize ordered_events

Even when it is not used to actually reorder events, some of its fields
are used, like session->ordered_events->tool, to shorten function
signatures where tool, for instance, was being passed, as the tool is
needed for the ordered_events code, we need it there and might as well
use it for other perf_session needs.

This fixes a problem where 'perf script' had some condition that made
session->ordered_events not to be initialized even with its
script->tool ordered_events related flags asking for it to be, which
looks like another bug and needs to be investigated further.

Always initializing session->ordered_events at least leaves the current
assumptions in place, so do it now.

Reported-by: David Ahern <dsah...@gmail.com>
Cc: Adrian Hunter <adrian.hun...@intel.com>
Cc: Borislav Petkov <b...@suse.de>
Cc: Don Zickus <dzic...@redhat.com>
Cc: Frederic Weisbecker <fweis...@gmail.com>
Cc: Jiri Olsa <jo...@redhat.com>
Cc: Namhyung Kim <namhy...@kernel.org>
Cc: Stephane Eranian <eran...@google.com>
Link: http://lkml.kernel.org/n/tip-b1xxk0rwkz2a0gip1uufm...@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
---
 tools/perf/util/session.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index adf0740c563b..89c66797abe4 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -110,6 +110,8 @@ struct perf_session *perf_session__new(struct 
perf_data_file *file,
 
        session->repipe = repipe;
        machines__init(&session->machines);
+       ordered_events__init(&session->ordered_events, &session->machines,
+                            session->evlist, tool, 
ordered_events__deliver_event);
 
        if (file) {
                if (perf_data_file__open(file))
@@ -139,9 +141,6 @@ struct perf_session *perf_session__new(struct 
perf_data_file *file,
            tool->ordered_events && 
!perf_evlist__sample_id_all(session->evlist)) {
                dump_printf("WARNING: No sample_id_all support, falling back to 
unordered processing\n");
                tool->ordered_events = false;
-       } else {
-               ordered_events__init(&session->ordered_events, 
&session->machines,
-                                    session->evlist, tool, 
ordered_events__deliver_event);
        }
 
        return session;
-- 
1.8.3.1

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