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docs: perf: Fix PMU instance name of hisi-pcie-pmu 

The PMU instance will be called hisi_pcie<sicl>_core<core> rather than
hisi_pcie<sicl>_<core>. Fix this in the documentation.

Fixes: c8602008e2 ("docs: perf: Add description for HiSilicon PCIe PMU driver")
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Link: https://lore.kernel.org/r/20221117084136.53572-3-yangyicong@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Yicong Yang 2022-11-17 16:41:34 +08:00 committed by Will Deacon
parent 6b4bb4f38d
commit eb79f12b4c
1 changed files with 11 additions and 11 deletions
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22
Documentation/admin-guide/perf/hisi-pcie-pmu.rst
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@ -15,10 +15,10 @@ HiSilicon PCIe PMU driver
The PCIe PMU driver registers a perf PMU with the name of its sicl-id and PCIe The PCIe PMU driver registers a perf PMU with the name of its sicl-id and PCIe
Core id.:: Core id.::
/sys/bus/event_source/hisi_pcie<sicl>_<core> /sys/bus/event_source/hisi_pcie<sicl>_core<core>
PMU driver provides description of available events and filter options in sysfs, PMU driver provides description of available events and filter options in sysfs,
see /sys/bus/event_source/devices/hisi_pcie<sicl>_<core>. see /sys/bus/event_source/devices/hisi_pcie<sicl>_core<core>.
The "format" directory describes all formats of the config (events) and config1 The "format" directory describes all formats of the config (events) and config1
(filter options) fields of the perf_event_attr structure. The "events" directory (filter options) fields of the perf_event_attr structure. The "events" directory
@ -33,13 +33,13 @@ monitored by PMU.
Example usage of perf:: Example usage of perf::
$# perf list $# perf list
hisi_pcie0_0/rx_mwr_latency/ [kernel PMU event] hisi_pcie0_core0/rx_mwr_latency/ [kernel PMU event]
hisi_pcie0_0/rx_mwr_cnt/ [kernel PMU event] hisi_pcie0_core0/rx_mwr_cnt/ [kernel PMU event]
------------------------------------------ ------------------------------------------
$# perf stat -e hisi_pcie0_0/rx_mwr_latency/ $# perf stat -e hisi_pcie0_core0/rx_mwr_latency/
$# perf stat -e hisi_pcie0_0/rx_mwr_cnt/ $# perf stat -e hisi_pcie0_core0/rx_mwr_cnt/
$# perf stat -g -e hisi_pcie0_0/rx_mwr_latency/ -e hisi_pcie0_0/rx_mwr_cnt/ $# perf stat -g -e hisi_pcie0_core0/rx_mwr_latency/ -e hisi_pcie0_core0/rx_mwr_cnt/
The current driver does not support sampling. So "perf record" is unsupported. The current driver does not support sampling. So "perf record" is unsupported.
Also attach to a task is unsupported for PCIe PMU. Also attach to a task is unsupported for PCIe PMU.
@ -64,7 +64,7 @@ bit8 is set, port=0x100; if these two Root Ports are both monitored, port=0x101.
Example usage of perf:: Example usage of perf::
$# perf stat -e hisi_pcie0_0/rx_mwr_latency,port=0x1/ sleep 5 $# perf stat -e hisi_pcie0_core0/rx_mwr_latency,port=0x1/ sleep 5
-bdf -bdf
@ -76,7 +76,7 @@ For example, "bdf=0x3900" means BDF of target Endpoint is 0000:39:00.0.
Example usage of perf:: Example usage of perf::
$# perf stat -e hisi_pcie0_0/rx_mrd_flux,bdf=0x3900/ sleep 5 $# perf stat -e hisi_pcie0_core0/rx_mrd_flux,bdf=0x3900/ sleep 5
2. Trigger filter 2. Trigger filter
Event statistics start when the first time TLP length is greater/smaller Event statistics start when the first time TLP length is greater/smaller
@ -90,7 +90,7 @@ means start when TLP length < condition.
Example usage of perf:: Example usage of perf::
$# perf stat -e hisi_pcie0_0/rx_mrd_flux,trig_len=0x4,trig_mode=1/ sleep 5 $# perf stat -e hisi_pcie0_core0/rx_mrd_flux,trig_len=0x4,trig_mode=1/ sleep 5
3. Threshold filter 3. Threshold filter
Counter counts when TLP length within the specified range. You can set the Counter counts when TLP length within the specified range. You can set the
@ -103,4 +103,4 @@ when TLP length < threshold.
Example usage of perf:: Example usage of perf::
$# perf stat -e hisi_pcie0_0/rx_mrd_flux,thr_len=0x4,thr_mode=1/ sleep 5 $# perf stat -e hisi_pcie0_core0/rx_mrd_flux,thr_len=0x4,thr_mode=1/ sleep 5