Re: [PATCH v4 2/2] drivers/perf: hisi: Add driver for HiSilicon PCIe PMU

From: liuqi (BA)
Date: Wed May 19 2021 - 23:31:44 EST




On 2021/5/19 19:40, John Garry wrote:
On 19/05/2021 10:49, 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: John Garry <john.garry@xxxxxxxxxx>
Signed-off-by: Qi Liu <liuqi115@xxxxxxxxxx>

JFYI, In light of this following series:
https://lore.kernel.org/linux-arm-kernel/87v97fccq9.ffs@xxxxxxxxxxxxxxxxxxxxxxx/

At some stage the irq_set_affinity_hint() calls need to be fixed up here as well.
Hi John,

Seems irq_set_affinity_hint() need to be replaced by irq_set_affinity(). I'll fix this and send a new version latter.

Thanks,
Qi

Thanks,
John

.