Re: [PATCH v5 1/6] locking/pvqspinlock: Unconditional PV kick with _Q_SLOW_VAL

From: Peter Zijlstra
Date: Sat Aug 08 2015 - 02:03:07 EST

On Fri, Aug 07, 2015 at 11:17:56PM -0400, Waiman Long wrote:
> If _Q_SLOW_VAL has been set, the vCPU state must have been vcpu_hashed.
> The extra check at the end of __pv_queued_spin_unlock() is unnecessary
> and so is removed.

This is half the patch it should be.

Because if the load is not needed, then the store is not either, and
then there's the comments to update.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at