On Thu, Jul 13, 2017 at 10:14:42AM +0200, Peter Zijlstra wrote:
> +static void __crossrelease_end(unsigned int *stamp)
> +{
[snip]
> +
> + /*
> + * If we rewind past the tail; all of history is lost.
> + */
> + if ((current->xhlock_idx_max - *stamp) < MAX_XHLOCKS_NR)
> + return;
> +
> + /*
> + * Invalidate the entire history..
> + */
> + for (i = 0; i < MAX_XHLOCKS_NR; i++)
> + invalidate_xhlock(&xhlock(i));
> +
> + current->xhlock_idx = 0;
> + current->xhlock_idx_hard = 0;
> + current->xhlock_idx_soft = 0;
> + current->xhlock_idx_hist = 0;
> + current->xhlock_idx_max = 0;
I don't understand why you introduced this code, yet. Do we need this?
The other of your suggestion looks very good though..
> +}
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