On Tue, Jun 30, 2020 at 07:44:48AM +0200, Ahmed S. Darwish wrote: > A sequence counter write side critical section must be protected by some > form of locking to serialize writers. A plain seqcount_t does not > contain the information of which lock must be held when entering a write > side critical section. > > Use the new seqcount_spinlock_t data type, which allows to associate a > spinlock with the sequence counter. This enables lockdep to verify that > the spinlock used for writer serialization is held when the write side > critical section is entered. > > If lockdep is disabled this lock association is compiled out and has > neither storage size nor runtime overhead. > > Signed-off-by: Ahmed S. Darwish <a.darwish@xxxxxxxxxxxxx> Reviewed-by: Daniel Wagner <dwagner@xxxxxxx>
