On Wed, 7 Apr 2021 21:40:05 +0100
Will Deacon [off-list ref] wrote:

On Wed, Apr 07, 2021 at 05:49:02PM +0800, Qi Liu wrote:

quoted

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@huawei.com>  

Do you have a link to this review, please?

Internal review, so drop the tag.

Jonathan

Will

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