[Intel-gfx] [PATCH v3] softirq: Prevent looping on disabled tasklets

[Chris Wilson]

On Sun, Feb 12, 2017 at 03:46:09PM +0000, Chris Wilson wrote:
> +void tasklet_enable(struct tasklet_struct *t)
> +{
> +	if (!atomic_dec_and_test(&t->count))
> +		return;
> +
> +	if (test_bit(TASKLET_STATE_SCHED, &t->state))
> +		raise_softirq(HI_SOFTIRQ | TASKLET_SOFTIRQ);

And of course this can't work as raise_softirq() is local to the cpu.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre