linux-kernel - Re: perf top: losing events?

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Message-ID: <20100121144902.GA1244@ghostprotocols.net>
Date:	Thu, 21 Jan 2010 12:49:02 -0200
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Mike Galbraith <efault@....de>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: perf top: losing events?

Em Thu, Jan 21, 2010 at 03:28:32PM +0100, Mike Galbraith escreveu:
> On Thu, 2010-01-21 at 10:22 -0200, Arnaldo Carvalho de Melo wrote:
> 
> > Can you check if this one helps? 
> 
> Made interrupt count correct, but symbols aren't mapped after the task
> forks it seems.  At least, in event__preprocess_sample(), after
> thread__find_addr_location(), al->map is NULL a LOT.

Try this one on top of the previous one:

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 8b04988..2227b84 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -975,6 +975,10 @@ static int event__process(event_t *event, struct perf_session *session)
 	case PERF_RECORD_MMAP:
 		event__process_mmap(event, session);
 		break;
+	case PERF_RECORD_FORK:
+	case PERF_RECORD_EXIT:
+		event__process_task(event, session);
+		break;
 	default:
 		break;
 	}
--
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