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authorJiri Olsa <jolsa@redhat.com>2011-02-16 17:35:34 +0100
committerSteven Rostedt <rostedt@goodmis.org>2011-03-22 12:52:03 -0400
commit1106b6997df7d0c0487e21fd9c9dd2ce3d4a52db (patch)
tree638a067a0d407948fb5362b794d8de397c6aa421 /kernel/trace
parent8df341cf251f3b77eaaef66f806570e74ab44452 (diff)
tracing: Fix set_ftrace_filter probe function display
If one or more function probes (like traceon) are enabled, and there's no other function filter, the first probe func is skipped (which one depends on the position in the hash). $ echo sys_open:traceon sys_close:traceon > ./set_ftrace_filter $ cat set_ftrace_filter #### all functions enabled #### sys_close:traceon:unlimited $ The reason was, that in the case of no other function filter, the func_pos was not properly updated before calling t_hash_start. Signed-off-by: Jiri Olsa <jolsa@redhat.com> LKML-Reference: <1297874134-7008-1-git-send-email-jolsa@redhat.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace')
-rw-r--r--kernel/trace/ftrace.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 888b611897d..c075f4ea6b9 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -1467,7 +1467,7 @@ t_next(struct seq_file *m, void *v, loff_t *pos)
return t_hash_next(m, pos);
(*pos)++;
- iter->pos = *pos;
+ iter->pos = iter->func_pos = *pos;
if (iter->flags & FTRACE_ITER_PRINTALL)
return t_hash_start(m, pos);
@@ -1502,7 +1502,6 @@ t_next(struct seq_file *m, void *v, loff_t *pos)
if (!rec)
return t_hash_start(m, pos);
- iter->func_pos = *pos;
iter->func = rec;
return iter;