Re: [PATCH 1/1] Fix: trace sched switch start/stop racy updates

[Steven Rostedt]

On Sat, 17 Aug 2019 10:40:31 -0400 (EDT)
Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx> wrote:

> > I'm now even more against adding the READ_ONCE() or WRITE_ONCE().  
> 
> I'm not convinced by your arguments.

Prove to me that there's an issue here beyond theoretical analysis,
then I'll consider that patch.

Show me a compiler used to compile the kernel that zeros out the
increment. Show me were the race actually occurs.

I think the READ/WRITE_ONCE() is more confusing than helpful. And
unneeded churn to the code. And really not needed for something that's
not critical to execution.

-- Steve