[PATCH 1/2] drivers/perf: hisi: Add driver for HiSilicon PCIe PMU

[Jonathan Cameron]

On Wed, 7 Apr 2021 21:40:05 +0100
Will Deacon <will at kernel.org> wrote:

> On Wed, Apr 07, 2021 at 05:49:02PM +0800, Qi Liu wrote:
> > PCIe PMU Root Complex Integrated End Point(RCiEP) device is supported
> > to sample bandwidth, latency, buffer occupation etc.
> > 
> > Each PMU RCiEP device monitors multiple root ports, and each RCiEP is
> > registered as a pmu in /sys/bus/event_source/devices, so users can
> > select target PMU, and use filter to do further sets.
> > 
> > Filtering options contains:
> > event        - select the event.
> > subevent     - select the subevent.
> > port         - select target root ports. Information of root ports
> >                are shown under sysfs.
> > bdf           - select requester_id of target EP device.
> > trig_len     - set trigger condition for starting event statistics.
> > trigger_mode - set trigger mode. 0 means starting to statistic when
> >                bigger than trigger condition, and 1 means smaller.
> > thr_len      - set threshold for statistics.
> > thr_mode     - set threshold mode. 0 means count when bigger than
> >                threshold, and 1 means smaller.
> > 
> > Reviewed-by: Jonathan Cameron <Jonathan.Cameron at huawei.com>  
> 
> Do you have a link to this review, please?

Internal review, so drop the tag.

Jonathan

> 
> Will
> 
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