On Wed, Mar 08, 2023 at 05:52:50AM -0800, Joel Fernandes wrote: > Just to add to previous reply: > > One thing to consider is that it is more of a performance improvement for > booting in expedited mode to fallback to normal later, than a bug > fix. Repeated synchronize_rcu() can easily add 100s of milliseconds and to > remedy that — a conversion of the call from normal API to the expedited API > will not help. 2 things to consider: 1) Is it this about specific calls to synchronize_rcu() that repeat a lot and thus create such measurable impact? If so the specific callsites should be considered for a conversion. 2) Is it about lots of different calls to synchronize_rcu() that gather a big noise? Then the solution is different. Again without proper analysis, what do we know? Thanks.
