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tracing: Simplify code for showing of soft disabled flag

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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>
This commit is contained in:
Tom Zanussi 2013-06-29 00:08:04 -05:00 committed by Steven Rostedt
parent 3fe3d6193e
commit a439059610
1 changed files with 10 additions and 10 deletions
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20
kernel/trace/trace_events.c
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@ -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));
}