Messages in this thread | | | Date | Fri, 8 Apr 2022 20:22:30 -0400 | From | Steven Rostedt <> | Subject | Re: [RFC][PATCH] timers: Add del_time_free() to be called before freeing timers |
| |
On Fri, 08 Apr 2022 22:29:58 +0200 Thomas Gleixner <tglx@linutronix.de> wrote:
> Well, you'd have to reinitialize it first before the explicit rearm > because the shutdown cleared the function pointer or if we use a flag > then the flag would prevent arming it again.
We could always use the LSB bit of the function as a "shutdown" flag, where:
timer_shutdown() { [..] timer->fn = (void *)((unsigned long)timer->fn | 1); [..] }
timer_rearm() { [..] timer->fn = (void *)((unsigned long)timer->fn & ~1UL); [..] }
mod_timer() {
if ((unsigned long)timer->fn & 1) return -EBUSY?;
[..] }
-- Steve
| |