Re: [PATCH v5 1/1] cpuhp: Expedite RCU when toggling system-wide SMT mode
From: Shrikanth Hegde
Date: Tue Jul 21 2026 - 00:32:37 EST
On 6/16/26 11:39 AM, Shrikanth Hegde wrote:
On a large config system with 1920 CPUs, completion time improves from
~1 hour to 5-6 minutes.
Tested-by: Samir <samir@xxxxxxxxxxxxx>
Reviewed-by: Shrikanth Hegde <sshegde@xxxxxxxxxxxxx>
Signed-off-by: Vishal Chourasia <vishalc@xxxxxxxxxxxxx>
From an RCU viewpoint:
Reviewed-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
Thank you Paul for reviewing this.
I am guessing that you will be taking this up some other path, but if
you would like it to to via RCU, please let me know.
Thanx, Paul
I would prefer this to go via tip tree since main change is in cpu.c
Thomas, peter,
What do you guys suggest? can this go via tip tree?
Also, do you have any other review comments on this or test to be done?
Gentle Ping.
Thomas, Peter, Ingo, Can this go via tip tree?
Do you guys have any comments to be addressed?
Or Do you want it to go via RCU tree?