linux-kernel - [PATCH v2 2/4] Documentation: dwc_pcie

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Message-ID: <20240816-dwc_pmu_fix-v2-2-198b8ab1077c@quicinc.com>
Date: Fri, 16 Aug 2024 20:47:21 +0530
From: Krishna chaitanya chundru <quic_krichai@...cinc.com>
To: Shuai Xue <xueshuai@...ux.alibaba.com>,
        Jing Zhang
	<renyu.zj@...ux.alibaba.com>,
        Will Deacon <will@...nel.org>, Mark Rutland
	<mark.rutland@....com>,
        Baolin Wang <baolin.wang@...ux.alibaba.com>,
        "Yicong
 Yang" <yangyicong@...ilicon.com>,
        Jonathan Cameron
	<Jonathan.Cameron@...wei.com>,
        Jonathan Corbet <corbet@....net>
CC: <linux-arm-kernel@...ts.infradead.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-doc@...r.kernel.org>,
        <quic_vbadigan@...cinc.com>, <quic_nitegupt@...cinc.com>,
        <quic_skananth@...cinc.com>, <quic_ramkri@...cinc.com>,
        <quic_parass@...cinc.com>, <quic_mrana@...cinc.com>,
        "Krishna chaitanya
 chundru" <quic_krichai@...cinc.com>
Subject: [PATCH v2 2/4] Documentation: dwc_pcie_pmu: Update bdf to sbdf

Update document to reflect the driver change to use sbdf instead
of bdf alone.

Signed-off-by: Krishna chaitanya chundru <quic_krichai@...cinc.com>
Reviewed-by: Yicong Yang <yangyicong@...ilicon.com>
---
 Documentation/admin-guide/perf/dwc_pcie_pmu.rst | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/Documentation/admin-guide/perf/dwc_pcie_pmu.rst b/Documentation/admin-guide/perf/dwc_pcie_pmu.rst
index d47cd229d710..39b8e1fdd0cd 100644
--- a/Documentation/admin-guide/perf/dwc_pcie_pmu.rst
+++ b/Documentation/admin-guide/perf/dwc_pcie_pmu.rst
@@ -46,16 +46,16 @@ Some of the events only exist for specific configurations.
 DesignWare Cores (DWC) PCIe PMU Driver
 =======================================
 
-This driver adds PMU devices for each PCIe Root Port named based on the BDF of
+This driver adds PMU devices for each PCIe Root Port named based on the SBDF of
 the Root Port. For example,
 
-    30:03.0 PCI bridge: Device 1ded:8000 (rev 01)
+    0001:30:03.0 PCI bridge: Device 1ded:8000 (rev 01)
 
-the PMU device name for this Root Port is dwc_rootport_3018.
+the PMU device name for this Root Port is dwc_rootport_13018.
 
 The DWC PCIe PMU driver registers a perf PMU driver, which provides
 description of available events and configuration options in sysfs, see
-/sys/bus/event_source/devices/dwc_rootport_{bdf}.
+/sys/bus/event_source/devices/dwc_rootport_{sbdf}.
 
 The "format" directory describes format of the config fields of the
 perf_event_attr structure. The "events" directory provides configuration
@@ -66,16 +66,16 @@ The "perf list" command shall list the available events from sysfs, e.g.::
 
     $# perf list | grep dwc_rootport
     <...>
-    dwc_rootport_3018/Rx_PCIe_TLP_Data_Payload/        [Kernel PMU event]
+    dwc_rootport_13018/Rx_PCIe_TLP_Data_Payload/        [Kernel PMU event]
     <...>
-    dwc_rootport_3018/rx_memory_read,lane=?/               [Kernel PMU event]
+    dwc_rootport_13018/rx_memory_read,lane=?/               [Kernel PMU event]
 
 Time Based Analysis Event Usage
 -------------------------------
 
 Example usage of counting PCIe RX TLP data payload (Units of bytes)::
 
-    $# perf stat -a -e dwc_rootport_3018/Rx_PCIe_TLP_Data_Payload/
+    $# perf stat -a -e dwc_rootport_13018/Rx_PCIe_TLP_Data_Payload/
 
 The average RX/TX bandwidth can be calculated using the following formula:
 
@@ -88,7 +88,7 @@ Lane Event Usage
 Each lane has the same event set and to avoid generating a list of hundreds
 of events, the user need to specify the lane ID explicitly, e.g.::
 
-    $# perf stat -a -e dwc_rootport_3018/rx_memory_read,lane=4/
+    $# perf stat -a -e dwc_rootport_13018/rx_memory_read,lane=4/
 
 The driver does not support sampling, therefore "perf record" will not
 work. Per-task (without "-a") perf sessions are not supported.

-- 
2.34.1