On Thu, Apr 08 2021 at 12:18, Peter Zijlstra wrote:
> On Thu, Apr 08, 2021 at 06:23:38AM +0100, Matthew Wilcox (Oracle) wrote:
>> bit_spinlocks are horrible on RT because there's absolutely nowhere
>> to put the mutex to sleep on. They also do not participate in lockdep
>> because there's nowhere
On Thu, Apr 08, 2021 at 06:23:38AM +0100, Matthew Wilcox (Oracle) wrote:
> bit_spinlocks are horrible on RT because there's absolutely nowhere
> to put the mutex to sleep on. They also do not participate in lockdep
> because there's nowhere to put the map.
>
> Most (all?) bit spinlocks are
bit_spinlocks are horrible on RT because there's absolutely nowhere
to put the mutex to sleep on. They also do not participate in lockdep
because there's nowhere to put the map.
Most (all?) bit spinlocks are actually a split lock; logically they
could be treated as a single spinlock, but for
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