summaryrefslogtreecommitdiffstats
path: root/tools/perf/util/probe-event.c
diff options
context:
space:
mode:
authorMasami Hiramatsu <mhiramat@redhat.com>2010-04-21 21:56:24 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2010-04-26 20:32:37 +0200
commit15eca306ec95e164d05457f9f27c722f69af6d18 (patch)
tree2a5a40956d5927202fedc983a51dcee1e5028f25 /tools/perf/util/probe-event.c
parentperf tools: Initialize dso->node member in dso__new (diff)
downloadlinux-15eca306ec95e164d05457f9f27c722f69af6d18.tar.xz
linux-15eca306ec95e164d05457f9f27c722f69af6d18.zip
perf probe: Fix to use symtab only if no debuginfo
Fix perf probe to use symtab only if there is no debuginfo, because debuginfo has more information than symtab. If we can't find a function in debuginfo, we never find it in symtab. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> LKML-Reference: <20100421195624.24664.46214.stgit@localhost6.localdomain6> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/probe-event.c')
-rw-r--r--tools/perf/util/probe-event.c17
1 files changed, 9 insertions, 8 deletions
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 4fb480367c3e..5d3baec216e3 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -180,15 +180,16 @@ static int try_to_find_kprobe_trace_events(struct perf_probe_event *pev,
return -ENOENT;
}
/* Error path : ntevs < 0 */
- if (need_dwarf) {
- if (ntevs == -EBADF)
- pr_warning("No dwarf info found in the vmlinux - "
- "please rebuild with CONFIG_DEBUG_INFO=y.\n");
- return ntevs;
+ pr_debug("An error occurred in debuginfo analysis (%d).\n", ntevs);
+ if (ntevs == -EBADF) {
+ pr_warning("Warning: No dwarf info found in the vmlinux - "
+ "please rebuild kernel with CONFIG_DEBUG_INFO=y.\n");
+ if (!need_dwarf) {
+ pr_debug("Trying to use symbols.\nn");
+ return 0;
+ }
}
- pr_debug("An error occurred in debuginfo analysis."
- " Try to use symbols.\n");
- return 0;
+ return ntevs;
}
#define LINEBUF_SIZE 256