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authorMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>2010-08-27 07:38:53 -0400
committerArnaldo Carvalho de Melo <acme@redhat.com>2010-09-08 10:47:18 -0400
commit04ddd04b044d8896a4f8a921b23ba09d365df196 (patch)
tree9b0068acdfe3c5d27e7f573b35018ea77e78d18e /tools/perf/util/probe-finder.c
parent61a527362234ac3352a91ac67c50c6f7cd248eb1 (diff)
perf probe: Fix return probe support
Fix a bug to support %return probe syntax again. Previous commit 4235b04 has a bug which disables the %return syntax on perf probe. Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20100827113852.22882.87447.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/probe-finder.c')
-rw-r--r--tools/perf/util/probe-finder.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index 525136684d4e..9b0e1b1f9755 100644
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -783,6 +783,16 @@ static int convert_probe_point(Dwarf_Die *sp_die, struct probe_finder *pf)
783 /* This function has no name. */ 783 /* This function has no name. */
784 tev->point.offset = (unsigned long)pf->addr; 784 tev->point.offset = (unsigned long)pf->addr;
785 785
786 /* Return probe must be on the head of a subprogram */
787 if (pf->pev->point.retprobe) {
788 if (tev->point.offset != 0) {
789 pr_warning("Return probe must be on the head of"
790 " a real function\n");
791 return -EINVAL;
792 }
793 tev->point.retprobe = true;
794 }
795
786 pr_debug("Probe point found: %s+%lu\n", tev->point.symbol, 796 pr_debug("Probe point found: %s+%lu\n", tev->point.symbol,
787 tev->point.offset); 797 tev->point.offset);
788 798