Re: [RFC][PATCH] timers: Add del_time_free() to be called before freeing timers

[Steven Rostedt]

On Fri, 8 Apr 2022 14:30:21 -1000
Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:

> On Fri, Apr 8, 2022 at 2:22 PM Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
> >
> > We could always use the LSB bit of the function as a "shutdown" flag, where:  
> 
> While we do that for data pointers, doing it for function pointers is dodgy.
> 
> Not all architectures necessarily align code pointers. In fact, I
> think that "-Os" on x86 makes all code alignment go away, and so
> function pointers have no alignment at all.

Hmm, well, I'm not sure it would work for all architectures, but what
about the MSB?  Setting it to zero on "shutdown"?

-- Steve