On Fri, 26 Dec 2025 12:05:31 +0100
Julia Lawall <[email protected]> wrote:

> soft_mode is not read in the enable case, so drop the assignment.
> Drop also the comment text that refers to the assignment and realign
> the comment.
> 
> Signed-off-by: Julia Lawall <[email protected]>
> 
> ---
> 
> Since soft_more is not used, there is no direct line from the goal of
> verification to finding this problem.

While reviewing the verification text awhile ago, I had made this same
patch. But it never got queued :-p

Anyway, since you officially posted your patch, I'll take it instead ;-)

-- Steve


> 
> kernel/trace/trace_events.c |    7 +++----
>  1 file changed, 3 insertions(+), 4 deletions(-)
> 
> diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
> index 76067529db61..137b4d9bb116 100644
> --- a/kernel/trace/trace_events.c
> +++ b/kernel/trace/trace_events.c
> @@ -826,16 +826,15 @@ static int __ftrace_event_enable_disable(struct 
> trace_event_file *file,
>                * When soft_disable is set and enable is set, we want to
>                * register the tracepoint for the event, but leave the event
>                * as is. That means, if the event was already enabled, we do
> -              * nothing (but set soft_mode). If the event is disabled, we
> -              * set SOFT_DISABLED before enabling the event tracepoint, so
> -              * it still seems to be disabled.
> +              * nothing. If the event is disabled, we set SOFT_DISABLED
> +              * before enabling the event tracepoint, so it still seems
> +              * to be disabled.
>                */
>               if (!soft_disable)
>                       clear_bit(EVENT_FILE_FL_SOFT_DISABLED_BIT, 
> &file->flags);
>               else {
>                       if (atomic_inc_return(&file->sm_ref) > 1)
>                               break;
> -                     soft_mode = true;
>                       /* Enable use of trace_buffered_event */
>                       trace_buffered_event_enable();
>               }


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