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SubjectRe: [PATCH] rcu: Clarify nocb kthreads naming in RCU_NOCB_CPU config
On Sun, Sep 27, 2020 at 08:13:42PM -0400, Joel Fernandes wrote:
> On Thu, Sep 24, 2020 at 12:04:10PM +0530, Neeraj Upadhyay wrote:
> > Clarify the "x" in rcuox/N naming in RCU_NOCB_CPU config
> > description.
> >
>
> Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>

Thank you, I will apply your Reviewed-by on the next rebase.

Thanx, Paul

> thanks,
>
> - Joel
>
> > Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org>
> > ---
> > kernel/rcu/Kconfig | 11 ++++++-----
> > 1 file changed, 6 insertions(+), 5 deletions(-)
> >
> > diff --git a/kernel/rcu/Kconfig b/kernel/rcu/Kconfig
> > index b71e21f..5b22747 100644
> > --- a/kernel/rcu/Kconfig
> > +++ b/kernel/rcu/Kconfig
> > @@ -227,11 +227,12 @@ config RCU_NOCB_CPU
> > specified at boot time by the rcu_nocbs parameter. For each
> > such CPU, a kthread ("rcuox/N") will be created to invoke
> > callbacks, where the "N" is the CPU being offloaded, and where
> > - the "p" for RCU-preempt (PREEMPTION kernels) and "s" for RCU-sched
> > - (!PREEMPTION kernels). Nothing prevents this kthread from running
> > - on the specified CPUs, but (1) the kthreads may be preempted
> > - between each callback, and (2) affinity or cgroups can be used
> > - to force the kthreads to run on whatever set of CPUs is desired.
> > + the "x" is "p" for RCU-preempt (PREEMPTION kernels) and "s" for
> > + RCU-sched (!PREEMPTION kernels). Nothing prevents this kthread
> > + from running on the specified CPUs, but (1) the kthreads may be
> > + preempted between each callback, and (2) affinity or cgroups can
> > + be used to force the kthreads to run on whatever set of CPUs is
> > + desired.
> >
> > Say Y here if you want to help to debug reduced OS jitter.
> > Say N here if you are unsure.
> > --
> > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> > a Linux Foundation Collaborative Project
> >

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