[AMD Official Use Only - General]
> -----Original Message----- > From: Tyler Retzlaff <[email protected]> > Sent: Tuesday, October 17, 2023 5:21 AM > To: Tummala, Sivaprasad <[email protected]> > Cc: [email protected]; [email protected]; > [email protected]; [email protected]; Yigit, Ferruh <[email protected]>; > [email protected] > Subject: Re: [PATCH v1 5/6] power: add eventdev support for power management > > Caution: This message originated from an External Source. Use proper caution > when opening attachments, clicking links, or responding. > > > On Mon, Oct 16, 2023 at 01:57:14PM -0700, Sivaprasad Tummala wrote: > > Add eventdev support to enable power saving when no events are > > arriving. It is based on counting the number of empty polls and, when > > the number reaches a certain threshold, entering an > > architecture-defined optimized power state that will either wait until > > a TSC timestamp expires, or when events arrive. > > > > This API mandates a core-to-single-port mapping (i.e. one core polling > > multiple ports of event device is not supported). This should be ok as > > the general use case will have one CPU core using one port to > > enqueue/dequeue events from an eventdev. > > > > This design is using Eventdev PMD Dequeue callbacks. > > > > 1. MWAITX/MONITORX: > > > > When a certain threshold of empty polls is reached, the core will go > > into a power optimized sleep while waiting on an address of next RX > > descriptor to be written to. > > > > 2. Pause instruction > > > > This method uses the pause instruction to avoid busy polling. > > > > Signed-off-by: Sivaprasad Tummala <[email protected]> > > --- > > lib/power/meson.build | 2 +- > > lib/power/rte_power_pmd_mgmt.c | 226 > > +++++++++++++++++++++++++++++++++ > lib/power/rte_power_pmd_mgmt.h | 55 ++++++++ > > lib/power/version.map | 4 + > > 4 files changed, 286 insertions(+), 1 deletion(-) > > > > ... > > + > > + # added in 23.07 > > + rte_power_eventdev_pmgmt_port_enable; > > + rte_power_eventdev_pmgmt_port_disable; > > 23.07 is released, 23.11? Hi Tyler, Thanks for spotting this. Will fix the typo in v2. > > > }; > > -- > > 2.34.1
