Thomas Gleixner <tglx@xxxxxxxxxxxxx> writes:
On Wed, Feb 21 2024 at 22:57, Raghavendra K T wrote:
On 2/21/2024 10:45 PM, Thomas Gleixner wrote:
On Wed, Feb 21 2024 at 17:53, Raghavendra K T wrote:
Configuration tested.
a) Base kernel (6.7),
Which scheduling model is the baseline using?
baseline is also PREEMPT_DYNAMIC with voluntary preemption
b) patched with PREEMPT_AUTO voluntary preemption.
c) patched with PREEMPT_DYNAMIC voluntary preemption.
Which RCU variant do you have enabled with a, b, c ?
I.e. PREEMPT_RCU=?
Raghu please confirm this, but if the defaults were chosen
then we should have:
PREEMPT_RCU=ybaseline is also PREEMPT_DYNAMIC with voluntary preemption
b) patched with PREEMPT_AUTO voluntary preemption.
If this was built with PREEMPT_VOLUNTARY then, PREEMPT_RCU=n.
If with CONFIG_PREEMPT, PREEMPT_RCU=y.
Might be worth rerunning the tests with the other combination
as well (still with voluntary preemption).
PREEMPT_RCU=yc) patched with PREEMPT_DYNAMIC voluntary preemption.