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authorTom Zanussi <tom.zanussi@linux.intel.com>2013-06-29 09:08:04 +0400
committerSteven Rostedt <rostedt@goodmis.org>2013-07-02 04:34:25 +0400
commita439059610ecd257dba29a612729132e470d118f (patch)
tree514d63a781142a1422c656b703fee01c51ec564e /kernel/trace/trace_events.c
parent3fe3d6193e7cd7b4dd2bde10772f048bdefea4ee (diff)
downloadlinux-a439059610ecd257dba29a612729132e470d118f.tar.xz
tracing: Simplify code for showing of soft disabled flag
Rather than enumerating each permutation, build the enable state string up from the combination of states. This also allows for the simpler addition of more states. Link: http://lkml.kernel.org/r/9aff5af6dee2f5a40ca30df41c39d5f33e998d7a.1372479499.git.tom.zanussi@linux.intel.com Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_events.c')
-rw-r--r--kernel/trace/trace_events.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 903a0bf2685e..7ee08b95c384 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -638,17 +638,17 @@ event_enable_read(struct file *filp, char __user *ubuf, size_t cnt,
loff_t *ppos)
{
struct ftrace_event_file *file = filp->private_data;
- char *buf;
+ char buf[4] = "0";
- if (file->flags & FTRACE_EVENT_FL_ENABLED) {
- if (file->flags & FTRACE_EVENT_FL_SOFT_DISABLED)
- buf = "0*\n";
- else if (file->flags & FTRACE_EVENT_FL_SOFT_MODE)
- buf = "1*\n";
- else
- buf = "1\n";
- } else
- buf = "0\n";
+ if (file->flags & FTRACE_EVENT_FL_ENABLED &&
+ !(file->flags & FTRACE_EVENT_FL_SOFT_DISABLED))
+ strcpy(buf, "1");
+
+ if (file->flags & FTRACE_EVENT_FL_SOFT_DISABLED ||
+ file->flags & FTRACE_EVENT_FL_SOFT_MODE)
+ strcat(buf, "*");
+
+ strcat(buf, "\n");
return simple_read_from_buffer(ubuf, cnt, ppos, buf, strlen(buf));
}