Messages in this thread | | | Date | Thu, 20 Oct 2022 17:48:25 -0700 | From | Andrei Vagin <> | Subject | Re: [PATCH 2/5] sched: add WF_CURRENT_CPU and externise ttwu |
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On Wed, Oct 19, 2022 at 09:54:15PM -0700, Kees Cook wrote: > On October 19, 2022 6:10:45 PM PDT, Andrei Vagin <avagin@gmail.com> wrote: > >From: Peter Oskolkov <posk@google.com> > > > >Add WF_CURRENT_CPU wake flag that advices the scheduler to > >move the wakee to the current CPU. This is useful for fast on-CPU > >context switching use cases such as UMCG. > > UMCG is https://lwn.net/Articles/879398/ ? >
Yes, this is it. https://lkml.org/lkml/2021/11/4/830 is the most recent version that I've seen.
> >In addition, make ttwu external rather than static so that > >the flag could be passed to it from outside of sched/core.c. > > > >Signed-off-by: Peter Oskolkov <posk@google.com> > >Signed-off-by: Andrei Vagin <avagin@gmail.com> > >--- > > kernel/sched/core.c | 3 +-- > > kernel/sched/fair.c | 4 ++++ > > kernel/sched/sched.h | 13 ++++++++----- > > 3 files changed, 13 insertions(+), 7 deletions(-) > > This would need an Ack from the sched maintainers...
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