提交 8c006cf7 编写于 作者: N Namhyung Kim 提交者: Steven Rostedt

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.orgReported-by: NNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>
上级 280d1429
......@@ -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;
}
......
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