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| author | Namhyung Kim <namhyung@kernel.org> | 2014-06-13 16:24:06 +0900 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2014-07-01 07:13:44 -0400 |
| commit | 8c006cf7a2130c4bfb600ae3a496910115804641 (patch) | |
| tree | 0385220fc299ce43753f2477bb7d69c9666334e2 /kernel/trace | |
| parent | 280d1429b6a67432ead24fb68a504b4c90c3d96d (diff) | |
| download | talos-op-linux-8c006cf7a2130c4bfb600ae3a496910115804641.tar.gz talos-op-linux-8c006cf7a2130c4bfb600ae3a496910115804641.zip | |
tracing: Improve message of empty set_ftrace_notrace file
When there's no entry in set_ftrace_notrace, it'll print nothing, but
it's better to print something like below like set_graph_notrace does:
#### no functions disabled ####
Link: http://lkml.kernel.org/p/1402644246-4649-1-git-send-email-namhyung@kernel.org
Reported-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/ftrace.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index ee245c0659a6..45aac1a742c5 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -2835,8 +2835,10 @@ static void *t_start(struct seq_file *m, loff_t *pos) * off, we can short cut and just print out that all * functions are enabled. */ - if (iter->flags & FTRACE_ITER_FILTER && - ftrace_hash_empty(ops->filter_hash)) { + if ((iter->flags & FTRACE_ITER_FILTER && + ftrace_hash_empty(ops->filter_hash)) || + (iter->flags & FTRACE_ITER_NOTRACE && + ftrace_hash_empty(ops->notrace_hash))) { if (*pos > 0) return t_hash_start(m, pos); iter->flags |= FTRACE_ITER_PRINTALL; @@ -2881,7 +2883,10 @@ static int t_show(struct seq_file *m, void *v) return t_hash_show(m, iter); if (iter->flags & FTRACE_ITER_PRINTALL) { - seq_printf(m, "#### all functions enabled ####\n"); + if (iter->flags & FTRACE_ITER_NOTRACE) + seq_printf(m, "#### no functions disabled ####\n"); + else + seq_printf(m, "#### all functions enabled ####\n"); return 0; } |
