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authorMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>2011-08-11 20:02:47 +0900
committerArnaldo Carvalho de Melo <acme@redhat.com>2011-08-12 09:25:38 -0300
commit36c0c588b9ea979b619d6ddced410f9551e4c5fa (patch)
treea8a9ae6d431a1305d00d8e2e4044e41bd0253525 /tools/perf
parentb0e9cb2802d4bf50955cca8a7d87cf94ebf750a5 (diff)
downloadop-kernel-dev-36c0c588b9ea979b619d6ddced410f9551e4c5fa.zip
op-kernel-dev-36c0c588b9ea979b619d6ddced410f9551e4c5fa.tar.gz
perf probe: Fix to walk all inline instances
Fix line-range collector to walk all instances of inlined function, because some execution paths can be optimized out depending on the function argument of instances. E.g.) inline_func (arg) { if (arg) do_something; else do_another; } func_A() { inline_func(1) } func_B() { inline_func(0) } In this case, func_A may have only do_something code and func_B may have only do_another. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Masami Hiramatsu <masami.hiramatsu@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20110811110247.19900.93702.stgit@fedora15 Signed-off-by: Masami Hiramatsu <masami.hiramatsu@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/util/probe-finder.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index 573c723..d6d5768 100644
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -1393,7 +1393,13 @@ static int line_range_inline_cb(Dwarf_Die *in_die, void *data)
struct dwarf_callback_param *param = data;
param->retval = find_line_range_by_line(in_die, param->data);
- return DWARF_CB_ABORT; /* No need to find other instances */
+
+ /*
+ * We have to check all instances of inlined function, because
+ * some execution paths can be optimized out depends on the
+ * function argument of instances
+ */
+ return DWARF_CB_OK;
}
/* Search function from function name */
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