Improve error messages of perf probe --line mode. Current
perf probe shows "Debuginfo analysis failed" error with an
error code when the given symbol is not found as below.
-----
# perf probe -L page_cgroup_init_flatmem
Debuginfo analysis failed. (-2)
Error: Failed to show lines.
-----
But -2 (-ENOMEM) means that the given source line or function
is not found. With this patch, perf probe shows correct error
message as below.
-----
# perf probe -L page_cgroup_init_flatmem
Specified source line is not found.
Error: Failed to show lines.
-----
There is also another debug error code is shown in the same
function after get_real_path(). This removes that too.
Signed-off-by: Masami Hiramatsu <masami.hiramatsu...@hitachi.com>
Cc: Peter Zijlstra <a.p.zijls...@chello.nl>
Cc: Paul Mackerras <pau...@samba.org>
Cc: Ingo Molnar <mi...@redhat.com>
Cc: Arnaldo Carvalho de Melo <a...@kernel.org>
---
tools/perf/util/probe-event.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 44c7141..9a0a183 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -628,11 +628,11 @@ static int __show_line_range(struct line_range *lr, const
char *module)
ret = debuginfo__find_line_range(dinfo, lr);
debuginfo__delete(dinfo);
- if (ret == 0) {
+ if (ret == 0 || ret == -ENOENT) {
pr_warning("Specified source line is not found.\n");
return -ENOENT;
} else if (ret < 0) {
- pr_warning("Debuginfo analysis failed. (%d)\n", ret);
+ pr_warning("Debuginfo analysis failed.\n");
return ret;
}
@@ -641,7 +641,7 @@ static int __show_line_range(struct line_range *lr, const
char *module)
ret = get_real_path(tmp, lr->comp_dir, &lr->path);
free(tmp); /* Free old path */
if (ret < 0) {
- pr_warning("Failed to find source file. (%d)\n", ret);
+ pr_warning("Failed to find source file path.\n");
return ret;
}
--
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