lkml.org 
[lkml]   [2022]   [Oct]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/3] docs: perf: Fix PMU instance name of hisi-pcie-pmu
Date
From: Yicong Yang <yangyicong@hisilicon.com>

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

Fixes: c8602008e247 ("docs: perf: Add description for HiSilicon PCIe PMU driver")
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
---
.../admin-guide/perf/hisi-pcie-pmu.rst | 22 +++++++++----------
1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/Documentation/admin-guide/perf/hisi-pcie-pmu.rst b/Documentation/admin-guide/perf/hisi-pcie-pmu.rst
index 294ebbdb22af..bbe66480ff85 100644
--- a/Documentation/admin-guide/perf/hisi-pcie-pmu.rst
+++ b/Documentation/admin-guide/perf/hisi-pcie-pmu.rst
@@ -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
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,
-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
(filter options) fields of the perf_event_attr structure. The "events" directory
@@ -33,13 +33,13 @@ monitored by PMU.
Example usage of perf::

$# perf list
- hisi_pcie0_0/rx_mwr_latency/ [kernel PMU event]
- hisi_pcie0_0/rx_mwr_cnt/ [kernel PMU event]
+ hisi_pcie0_core0/rx_mwr_latency/ [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_0/rx_mwr_cnt/
- $# perf stat -g -e hisi_pcie0_0/rx_mwr_latency/ -e hisi_pcie0_0/rx_mwr_cnt/
+ $# perf stat -e hisi_pcie0_core0/rx_mwr_latency/
+ $# perf stat -e hisi_pcie0_core0/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.
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::

- $# 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

@@ -76,7 +76,7 @@ For example, "bdf=0x3900" means BDF of target Endpoint is 0000:39:00.0.

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
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::

- $# 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
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::

- $# 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
--
2.24.0
\
 
 \ /
  Last update: 2022-10-25 13:33    [W:0.129 / U:0.216 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site