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SubjectRe: [PATCH v8 3/9] firmware: arm_scmi: Add notification dispatch and delivery
On Mon, Jun 08, 2020 at 06:03:46PM +0100, Sudeep Holla wrote:
> On Wed, May 20, 2020 at 09:11:12AM +0100, Cristian Marussi wrote:
> > Add core SCMI Notifications dispatch and delivery support logic which is
> > able, at first, to dispatch well-known received events from the RX ISR to
> > the dedicated deferred worker, and then, from there, to final deliver the
> > events to the registered users' callbacks.
> >
> > Dispatch and delivery is just added here, still not enabled.
> >
> > Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> > Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
> > ---
> > drivers/firmware/arm_scmi/notify.c | 354 ++++++++++++++++++++++++++++-
> > drivers/firmware/arm_scmi/notify.h | 10 +
> > 2 files changed, 362 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/firmware/arm_scmi/notify.c b/drivers/firmware/arm_scmi/notify.c
> > index 7cf61dbe2a8e..d582f71fde5b 100644
> > --- a/drivers/firmware/arm_scmi/notify.c
> > +++ b/drivers/firmware/arm_scmi/notify.c
>
> [...]
>
> > @@ -1085,6 +1422,12 @@ int scmi_notification_init(struct scmi_handle *handle)
> > ni->gid = gid;
> > ni->handle = handle;
> >
> > + ni->notify_wq = alloc_workqueue("scmi_notify",
> > + WQ_UNBOUND | WQ_FREEZABLE | WQ_SYSFS,
> > + 0);
>
> What's the use of WQ_SYSFS for SCMI notifications ? Do we need it ?
>

Lukasz asked for it, when we were talking about workqueues' priorities configurability.
(not implemented in this series)

Thanks

Cristian
> --
> Regards,
> Sudeep

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