On Fri, Jan 5, 2024 at 9:24 AM <pbhagavat...@marvell.com> wrote: > > From: Pavan Nikhilesh <pbhagavat...@marvell.com> > > Use WFE LDP loop while polling for GETWORK completion for better > power savings. > Disabled by default and can be enabled by setting > `RTE_ARM_USE_WFE` to `true` in `config/arm/meson.build` > > Signed-off-by: Pavan Nikhilesh <pbhagavat...@marvell.com> > --- > doc/guides/eventdevs/cnxk.rst | 9 ++++++ > drivers/event/cnxk/cn10k_worker.h | 52 +++++++++++++++++++++++++------ > 2 files changed, 52 insertions(+), 9 deletions(-) > > diff --git a/doc/guides/eventdevs/cnxk.rst b/doc/guides/eventdevs/cnxk.rst > index cccb8a0304..d62c143c77 100644 > --- a/doc/guides/eventdevs/cnxk.rst > +++ b/doc/guides/eventdevs/cnxk.rst > @@ -198,6 +198,15 @@ Runtime Config Options > > -a 0002:0e:00.0,tim_eclk_freq=122880000-1000000000-0 > > +Power Savings on CN10K > +---------------------- > + > +ARM cores can additionally use WFE when polling for transactions on SSO bus > +to save power i.e., in the event dequeue call ARM core can enter WFE and exit > +when either work has been scheduled or dequeue timeout has reached. > +This can be enabled by setting ``RTE_ARM_USE_WFE`` to ``true`` in > +``config/arm/meson.build``.
+ ARM maintainers IMO, Updating config/arm/meson.build for enabling RTE_ARM_USE_WFE, needs to improved. Could you push a patch for enabling via -D... or via -Dc_args=...
