The comment on the soft disable 'disable' case of
__ftrace_event_enable_disable() states that the soft disable bit
should be cleared in that case, but currently only the soft mode bit
is actually cleared.
This essentially leaves the standard non-soft-enable enable/disable
paths as the only way to clear the soft disable flag, but the soft
disable bit should also be cleared when removing a trigger with '!'.
Also, the SOFT_DISABLED bit should never be set if SOFT_MODE is
cleared.
This fixes the above discrepancies.
Signed-off-by: Tom Zanussi <tom.zanu...@linux.intel.com>
---
kernel/trace/trace_events.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index ecb2609..f9738dc 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -282,6 +282,8 @@ static int __ftrace_event_enable_disable(struct
ftrace_event_file *file,
/* If in SOFT_MODE, just set the SOFT_DISABLE_BIT */
if (file->flags & FTRACE_EVENT_FL_SOFT_MODE)
set_bit(FTRACE_EVENT_FL_SOFT_DISABLED_BIT,
&file->flags);
+ else
+ clear_bit(FTRACE_EVENT_FL_SOFT_DISABLED_BIT,
&file->flags);
break;
case 1:
/*
--
1.7.11.4
--
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