linux-kernel - [tip:perf/probes] perf/probes: Exit searching after finding target function

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Message-ID: <tip-8030c5f5a57e018fcdeb1f395d7adc123b48ced6@git.kernel.org>
Date:	Thu, 29 Oct 2009 08:08:36 GMT
From:	tip-bot for Masami Hiramatsu <mhiramat@...hat.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	mingo@...hat.com, peterz@...radead.org, fweisbec@...il.com,
	rostedt@...dmis.org, jbaron@...hat.com, tglx@...utronix.de,
	mhiramat@...hat.com, hpa@...or.com, fche@...hat.com,
	linux-kernel@...r.kernel.org, jkenisto@...ibm.com,
	hch@...radead.org, ananth@...ibm.com, srikar@...ux.vnet.ibm.com,
	prasad@...ux.vnet.ibm.com, mingo@...e.hu
Subject: [tip:perf/probes] perf/probes: Exit searching after finding target function

Commit-ID:  8030c5f5a57e018fcdeb1f395d7adc123b48ced6
Gitweb:     http://git.kernel.org/tip/8030c5f5a57e018fcdeb1f395d7adc123b48ced6
Author:     Masami Hiramatsu <mhiramat@...hat.com>
AuthorDate: Tue, 27 Oct 2009 16:42:53 -0400
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Thu, 29 Oct 2009 08:47:48 +0100

perf/probes: Exit searching after finding target function

Exit searching after finding real (not-inlined) function,
because there should be no same symbol in that CU.

Signed-off-by: Masami Hiramatsu <mhiramat@...hat.com>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Jim Keniston <jkenisto@...ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@...ibm.com>
Cc: Christoph Hellwig <hch@...radead.org>
Cc: Frank Ch. Eigler <fche@...hat.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Jason Baron <jbaron@...hat.com>
Cc: K.Prasad <prasad@...ux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
LKML-Reference: <20091027204252.30545.19251.stgit@...usame>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 tools/perf/util/probe-finder.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index 54e7071..b98d35e 100644
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -585,14 +585,14 @@ static int probefunc_callback(struct die_link *dlink, void *data)
 				DIE_IF(ret != DW_DLV_OK);
 				pr_debug("inline definition offset %lld\n",
 					 pf->inl_offs);
-				return 0;
+				return 0;	/* Continue to search */
 			}
 			/* Get probe address */
 			pf->addr = die_get_entrypc(dlink->die);
 			pf->addr += pp->offset;
 			/* TODO: Check the address in this function */
 			show_probepoint(dlink->die, pp->offset, pf);
-			/* Continue to search */
+			return 1; /* Exit; no same symbol in this CU. */
 		}
 	} else if (tag == DW_TAG_inlined_subroutine && pf->inl_offs) {
 		if (die_get_abstract_origin(dlink->die) == pf->inl_offs) {
--
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