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[PATCH -tip perf/probes 07/10] perf/probes: Exit searching after finding target function
- From: Masami Hiramatsu <mhiramat at redhat dot com>
- To: Ingo Molnar <mingo at elte dot hu>, Frederic Weisbecker <fweisbec at gmail dot com>, lkml<linux-kernel at vger dot kernel dot org>
- Cc: systemtap<systemtap at sources dot redhat dot com>, DLE<dle-develop at lists dot sourceforge dot net>, Masami Hiramatsu <mhiramat at redhat dot com>, Ingo Molnar <mingo at elte dot hu>, Steven Rostedt <rostedt at goodmis dot org>, Jim Keniston <jkenisto at us dot ibm dot com>, Ananth N Mavinakayanahalli <ananth at in dot ibm dot com>, Christoph Hellwig <hch at infradead dot org>, "Frank Ch. Eigler" <fche at redhat dot com>, Frederic Weisbecker <fweisbec at gmail dot com>, "H. Peter Anvin" <hpa at zytor dot com>, Jason Baron <jbaron at redhat dot com>, "K.Prasad" <prasad at linux dot vnet dot ibm dot com>, Peter Zijlstra <peterz at infradead dot org>, Srikar Dronamraju <srikar at linux dot vnet dot ibm dot com>
- Date: Tue, 27 Oct 2009 16:42:53 -0400
- Subject: [PATCH -tip perf/probes 07/10] perf/probes: Exit searching after finding target function
- References: <20091027204156.30545.96425.stgit@harusame>
Exit searching after finding real (not-inlined) function, because
there should be no same symbol in that CU.
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Frank Ch. Eigler <fche@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: K.Prasad <prasad@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
---
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) {
--
Masami Hiramatsu
Software Engineer
Hitachi Computer Products (America), Inc.
Software Solutions Division
e-mail: mhiramat@redhat.com