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From:   Phong Tran <tranmanphong@gmail.com>
To:     corbet@lwn.net, mathieu.poirier@linaro.org, suzuki.poulose@arm.com
Cc:     skhan@linuxfoundation.org, mchehab@kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org,
        linux-kernel@vger.kernel.org,
        linux-kernel-mentees@lists.linuxfoundation.org,
        Phong Tran <tranmanphong@gmail.com>
Subject: [PATCH] Documentation: coresight: covert txt to rst
Date:   Sat,  6 Jul 2019 03:45:12 +0700
Message-Id: <20190705204512.15444-1-tranmanphong@gmail.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

change the format file and adpate the text style

Signed-off-by: Phong Tran <tranmanphong@gmail.com>
---
 .../trace/{coresight.txt => coresight.rst}         | 296 ++++++++++++---------
 Documentation/trace/index.rst                      |   1 +
 2 files changed, 167 insertions(+), 130 deletions(-)
 rename Documentation/trace/{coresight.txt => coresight.rst} (59%)

diff --git a/Documentation/trace/coresight.txt b/Documentation/trace/coresight.rst
similarity index 59%
rename from Documentation/trace/coresight.txt
rename to Documentation/trace/coresight.rst
index efbc832146e7..bea24e70cfba 100644
--- a/Documentation/trace/coresight.txt
+++ b/Documentation/trace/coresight.rst
@@ -1,5 +1,6 @@
-		Coresight - HW Assisted Tracing on ARM
-		======================================
+======================================
+Coresight - HW Assisted Tracing on ARM
+======================================
 
    Author:   Mathieu Poirier <mathieu.poirier@linaro.org>
    Date:     September 11th, 2014
@@ -26,7 +27,7 @@ implementation, either storing the compressed stream in a memory buffer or
 creating an interface to the outside world where data can be transferred to a
 host without fear of filling up the onboard coresight memory buffer.
 
-At typical coresight system would look like this:
+At typical coresight system would look like this::
 
   *****************************************************************
  **************************** AMBA AXI  ****************************===||
@@ -95,6 +96,7 @@ Acronyms and Classification
 
 Acronyms:
 
+======== =============================================================
 PTM:     Program Trace Macrocell
 ETM:     Embedded Trace Macrocell
 STM:     System trace Macrocell
@@ -104,6 +106,7 @@ TPIU:    Trace Port Interface Unit
 TMC-ETR: Trace Memory Controller, configured as Embedded Trace Router
 TMC-ETF: Trace Memory Controller, configured as Embedded Trace FIFO
 CTI:     Cross Trigger Interface
+======== =============================================================
 
 Classification:
 
@@ -118,7 +121,7 @@ Misc:
 
 
 Device Tree Bindings
-----------------------
+--------------------
 
 See Documentation/devicetree/bindings/arm/coresight.txt for details.
 
@@ -133,57 +136,63 @@ The coresight framework provides a central point to represent, configure and
 manage coresight devices on a platform.  Any coresight compliant device can
 register with the framework for as long as they use the right APIs:
 
-struct coresight_device *coresight_register(struct coresight_desc *desc);
-void coresight_unregister(struct coresight_device *csdev);
+.. c:function:: struct coresight_device *coresight_register(struct coresight_desc *desc);
+.. c:function:: void coresight_unregister(struct coresight_device *csdev);
 
-The registering function is taking a "struct coresight_device *csdev" and
+The registering function is taking a :code:`struct coresight_device *csdev` and
 register the device with the core framework.  The unregister function takes
-a reference to a "struct coresight_device", obtained at registration time.
+a reference to a :code:`struct coresight_device`, obtained at registration time.
 
 If everything goes well during the registration process the new devices will
 show up under /sys/bus/coresight/devices, as showns here for a TC2 platform:
 
-root:~# ls /sys/bus/coresight/devices/
-replicator  20030000.tpiu    2201c000.ptm  2203c000.etm  2203e000.etm
-20010000.etb         20040000.funnel  2201d000.ptm  2203d000.etm
-root:~#
+.. code:: console
 
-The functions take a "struct coresight_device", which looks like this:
+    root:~# ls /sys/bus/coresight/devices/
+    replicator  20030000.tpiu    2201c000.ptm  2203c000.etm  2203e000.etm
+    20010000.etb         20040000.funnel  2201d000.ptm  2203d000.etm
+    root:~#
 
-struct coresight_desc {
-        enum coresight_dev_type type;
-        struct coresight_dev_subtype subtype;
-        const struct coresight_ops *ops;
-        struct coresight_platform_data *pdata;
-        struct device *dev;
-        const struct attribute_group **groups;
-};
+The functions take a :code:`struct coresight_device`, which looks like this:
+
+.. code:: c
+
+    struct coresight_desc {
+            enum coresight_dev_type type;
+            struct coresight_dev_subtype subtype;
+            const struct coresight_ops *ops;
+            struct coresight_platform_data *pdata;
+            struct device *dev;
+            const struct attribute_group **groups;
+    };
 
 
 The "coresight_dev_type" identifies what the device is, i.e, source link or
 sink while the "coresight_dev_subtype" will characterise that type further.
 
-The "struct coresight_ops" is mandatory and will tell the framework how to
+The :code:`struct coresight_ops` is mandatory and will tell the framework how to
 perform base operations related to the components, each component having
-a different set of requirement.  For that "struct coresight_ops_sink",
-"struct coresight_ops_link" and "struct coresight_ops_source" have been
+a different set of requirement.  For that :code:`struct coresight_ops_sink,
+struct coresight_ops_link` and :code:`struct coresight_ops_source` have been
 provided.
 
-The next field, "struct coresight_platform_data *pdata" is acquired by calling
-"of_get_coresight_platform_data()", as part of the driver's _probe routine and
-"struct device *dev" gets the device reference embedded in the "amba_device":
+The next field, :code:`struct coresight_platform_data *pdata` is acquired by calling
+:code:`of_get_coresight_platform_data()`, as part of the driver's _probe routine and
+:code:`struct device *dev` gets the device reference embedded in the :code:`amba_device`:
 
-static int etm_probe(struct amba_device *adev, const struct amba_id *id)
-{
- ...
- ...
- drvdata->dev = &adev->dev;
- ...
-}
+.. code:: c
+
+    static int etm_probe(struct amba_device *adev, const struct amba_id *id)
+    {
+     ...
+     ...
+     drvdata->dev = &adev->dev;
+     ...
+    }
 
 Specific class of device (source, link, or sink) have generic operations
-that can be performed on them (see "struct coresight_ops").  The
-"**groups" is a list of sysfs entries pertaining to operations
+that can be performed on them (see :code:`struct coresight_ops`).  The
+:code:`**groups` is a list of sysfs entries pertaining to operations
 specific to that component only.  "Implementation defined" customisations are
 expected to be accessed and controlled using those entries.
 
@@ -204,49 +213,56 @@ There is no limit on the amount of sinks (nor sources) that can be enabled at
 any given moment.  As a generic operation, all device pertaining to the sink
 class will have an "active" entry in sysfs:
 
-root:/sys/bus/coresight/devices# ls
-replicator  20030000.tpiu    2201c000.ptm  2203c000.etm  2203e000.etm
-20010000.etb         20040000.funnel  2201d000.ptm  2203d000.etm
-root:/sys/bus/coresight/devices# ls 20010000.etb
-enable_sink  status  trigger_cntr
-root:/sys/bus/coresight/devices# echo 1 > 20010000.etb/enable_sink
-root:/sys/bus/coresight/devices# cat 20010000.etb/enable_sink
-1
-root:/sys/bus/coresight/devices#
+.. code:: console
+
+    root:/sys/bus/coresight/devices# ls
+    replicator  20030000.tpiu    2201c000.ptm  2203c000.etm  2203e000.etm
+    20010000.etb         20040000.funnel  2201d000.ptm  2203d000.etm
+    root:/sys/bus/coresight/devices# ls 20010000.etb
+    enable_sink  status  trigger_cntr
+    root:/sys/bus/coresight/devices# echo 1 > 20010000.etb/enable_sink
+    root:/sys/bus/coresight/devices# cat 20010000.etb/enable_sink
+    1
+    root:/sys/bus/coresight/devices#
 
 At boot time the current etm3x driver will configure the first address
 comparator with "_stext" and "_etext", essentially tracing any instruction
 that falls within that range.  As such "enabling" a source will immediately
 trigger a trace capture:
 
-root:/sys/bus/coresight/devices# echo 1 > 2201c000.ptm/enable_source
-root:/sys/bus/coresight/devices# cat 2201c000.ptm/enable_source
-1
-root:/sys/bus/coresight/devices# cat 20010000.etb/status
-Depth:          0x2000
-Status:         0x1
-RAM read ptr:   0x0
-RAM wrt ptr:    0x19d3   <----- The write pointer is moving
-Trigger cnt:    0x0
-Control:        0x1
-Flush status:   0x0
-Flush ctrl:     0x2001
-root:/sys/bus/coresight/devices#
+.. code:: console
+
+    root:/sys/bus/coresight/devices# echo 1 > 2201c000.ptm/enable_source
+    root:/sys/bus/coresight/devices# cat 2201c000.ptm/enable_source
+    1
+    root:/sys/bus/coresight/devices# cat 20010000.etb/status
+    Depth:          0x2000
+    Status:         0x1
+    RAM read ptr:   0x0
+    RAM wrt ptr:    0x19d3   <----- The write pointer is moving
+    Trigger cnt:    0x0
+    Control:        0x1
+    Flush status:   0x0
+    Flush ctrl:     0x2001
+    root:/sys/bus/coresight/devices#
 
 Trace collection is stopped the same way:
 
-root:/sys/bus/coresight/devices# echo 0 > 2201c000.ptm/enable_source
-root:/sys/bus/coresight/devices#
+.. code:: console
+
+    root:/sys/bus/coresight/devices# echo 0 > 2201c000.ptm/enable_source
+    root:/sys/bus/coresight/devices#
 
 The content of the ETB buffer can be harvested directly from /dev:
 
-root:/sys/bus/coresight/devices# dd if=/dev/20010000.etb \
-of=~/cstrace.bin
+.. code:: console
 
-64+0 records in
-64+0 records out
-32768 bytes (33 kB) copied, 0.00125258 s, 26.2 MB/s
-root:/sys/bus/coresight/devices#
+    root:/sys/bus/coresight/devices# dd if=/dev/20010000.etb \
+    of=~/cstrace.bin
+    64+0 records in
+    64+0 records out
+    32768 bytes (33 kB) copied, 0.00125258 s, 26.2 MB/s
+    root:/sys/bus/coresight/devices#
 
 The file cstrace.bin can be decompressed using "ptm2human", DS-5 or Trace32.
 
@@ -254,55 +270,57 @@ Following is a DS-5 output of an experimental loop that increments a variable up
 to a certain value.  The example is simple and yet provides a glimpse of the
 wealth of possibilities that coresight provides.
 
-Info                                    Tracing enabled
-Instruction     106378866       0x8026B53C      E52DE004        false   PUSH     {lr}
-Instruction     0       0x8026B540      E24DD00C        false   SUB      sp,sp,#0xc
-Instruction     0       0x8026B544      E3A03000        false   MOV      r3,#0
-Instruction     0       0x8026B548      E58D3004        false   STR      r3,[sp,#4]
-Instruction     0       0x8026B54C      E59D3004        false   LDR      r3,[sp,#4]
-Instruction     0       0x8026B550      E3530004        false   CMP      r3,#4
-Instruction     0       0x8026B554      E2833001        false   ADD      r3,r3,#1
-Instruction     0       0x8026B558      E58D3004        false   STR      r3,[sp,#4]
-Instruction     0       0x8026B55C      DAFFFFFA        true    BLE      {pc}-0x10 ; 0x8026b54c
-Timestamp                                       Timestamp: 17106715833
-Instruction     319     0x8026B54C      E59D3004        false   LDR      r3,[sp,#4]
-Instruction     0       0x8026B550      E3530004        false   CMP      r3,#4
-Instruction     0       0x8026B554      E2833001        false   ADD      r3,r3,#1
-Instruction     0       0x8026B558      E58D3004        false   STR      r3,[sp,#4]
-Instruction     0       0x8026B55C      DAFFFFFA        true    BLE      {pc}-0x10 ; 0x8026b54c
-Instruction     9       0x8026B54C      E59D3004        false   LDR      r3,[sp,#4]
-Instruction     0       0x8026B550      E3530004        false   CMP      r3,#4
-Instruction     0       0x8026B554      E2833001        false   ADD      r3,r3,#1
-Instruction     0       0x8026B558      E58D3004        false   STR      r3,[sp,#4]
-Instruction     0       0x8026B55C      DAFFFFFA        true    BLE      {pc}-0x10 ; 0x8026b54c
-Instruction     7       0x8026B54C      E59D3004        false   LDR      r3,[sp,#4]
-Instruction     0       0x8026B550      E3530004        false   CMP      r3,#4
-Instruction     0       0x8026B554      E2833001        false   ADD      r3,r3,#1
-Instruction     0       0x8026B558      E58D3004        false   STR      r3,[sp,#4]
-Instruction     0       0x8026B55C      DAFFFFFA        true    BLE      {pc}-0x10 ; 0x8026b54c
-Instruction     7       0x8026B54C      E59D3004        false   LDR      r3,[sp,#4]
-Instruction     0       0x8026B550      E3530004        false   CMP      r3,#4
-Instruction     0       0x8026B554      E2833001        false   ADD      r3,r3,#1
-Instruction     0       0x8026B558      E58D3004        false   STR      r3,[sp,#4]
-Instruction     0       0x8026B55C      DAFFFFFA        true    BLE      {pc}-0x10 ; 0x8026b54c
-Instruction     10      0x8026B54C      E59D3004        false   LDR      r3,[sp,#4]
-Instruction     0       0x8026B550      E3530004        false   CMP      r3,#4
-Instruction     0       0x8026B554      E2833001        false   ADD      r3,r3,#1
-Instruction     0       0x8026B558      E58D3004        false   STR      r3,[sp,#4]
-Instruction     0       0x8026B55C      DAFFFFFA        true    BLE      {pc}-0x10 ; 0x8026b54c
-Instruction     6       0x8026B560      EE1D3F30        false   MRC      p15,#0x0,r3,c13,c0,#1
-Instruction     0       0x8026B564      E1A0100D        false   MOV      r1,sp
-Instruction     0       0x8026B568      E3C12D7F        false   BIC      r2,r1,#0x1fc0
-Instruction     0       0x8026B56C      E3C2203F        false   BIC      r2,r2,#0x3f
-Instruction     0       0x8026B570      E59D1004        false   LDR      r1,[sp,#4]
-Instruction     0       0x8026B574      E59F0010        false   LDR      r0,[pc,#16] ; [0x8026B58C] = 0x80550368
-Instruction     0       0x8026B578      E592200C        false   LDR      r2,[r2,#0xc]
-Instruction     0       0x8026B57C      E59221D0        false   LDR      r2,[r2,#0x1d0]
-Instruction     0       0x8026B580      EB07A4CF        true    BL       {pc}+0x1e9344 ; 0x804548c4
-Info                                    Tracing enabled
-Instruction     13570831        0x8026B584      E28DD00C        false   ADD      sp,sp,#0xc
-Instruction     0       0x8026B588      E8BD8000        true    LDM      sp!,{pc}
-Timestamp                                       Timestamp: 17107041535
+.. code:: c
+
+    Info                                    Tracing enabled
+    Instruction     106378866       0x8026B53C      E52DE004        false   PUSH     {lr}
+    Instruction     0       0x8026B540      E24DD00C        false   SUB      sp,sp,#0xc
+    Instruction     0       0x8026B544      E3A03000        false   MOV      r3,#0
+    Instruction     0       0x8026B548      E58D3004        false   STR      r3,[sp,#4]
+    Instruction     0       0x8026B54C      E59D3004        false   LDR      r3,[sp,#4]
+    Instruction     0       0x8026B550      E3530004        false   CMP      r3,#4
+    Instruction     0       0x8026B554      E2833001        false   ADD      r3,r3,#1
+    Instruction     0       0x8026B558      E58D3004        false   STR      r3,[sp,#4]
+    Instruction     0       0x8026B55C      DAFFFFFA        true    BLE      {pc}-0x10 ; 0x8026b54c
+    Timestamp                                       Timestamp: 17106715833
+    Instruction     319     0x8026B54C      E59D3004        false   LDR      r3,[sp,#4]
+    Instruction     0       0x8026B550      E3530004        false   CMP      r3,#4
+    Instruction     0       0x8026B554      E2833001        false   ADD      r3,r3,#1
+    Instruction     0       0x8026B558      E58D3004        false   STR      r3,[sp,#4]
+    Instruction     0       0x8026B55C      DAFFFFFA        true    BLE      {pc}-0x10 ; 0x8026b54c
+    Instruction     9       0x8026B54C      E59D3004        false   LDR      r3,[sp,#4]
+    Instruction     0       0x8026B550      E3530004        false   CMP      r3,#4
+    Instruction     0       0x8026B554      E2833001        false   ADD      r3,r3,#1
+    Instruction     0       0x8026B558      E58D3004        false   STR      r3,[sp,#4]
+    Instruction     0       0x8026B55C      DAFFFFFA        true    BLE      {pc}-0x10 ; 0x8026b54c
+    Instruction     7       0x8026B54C      E59D3004        false   LDR      r3,[sp,#4]
+    Instruction     0       0x8026B550      E3530004        false   CMP      r3,#4
+    Instruction     0       0x8026B554      E2833001        false   ADD      r3,r3,#1
+    Instruction     0       0x8026B558      E58D3004        false   STR      r3,[sp,#4]
+    Instruction     0       0x8026B55C      DAFFFFFA        true    BLE      {pc}-0x10 ; 0x8026b54c
+    Instruction     7       0x8026B54C      E59D3004        false   LDR      r3,[sp,#4]
+    Instruction     0       0x8026B550      E3530004        false   CMP      r3,#4
+    Instruction     0       0x8026B554      E2833001        false   ADD      r3,r3,#1
+    Instruction     0       0x8026B558      E58D3004        false   STR      r3,[sp,#4]
+    Instruction     0       0x8026B55C      DAFFFFFA        true    BLE      {pc}-0x10 ; 0x8026b54c
+    Instruction     10      0x8026B54C      E59D3004        false   LDR      r3,[sp,#4]
+    Instruction     0       0x8026B550      E3530004        false   CMP      r3,#4
+    Instruction     0       0x8026B554      E2833001        false   ADD      r3,r3,#1
+    Instruction     0       0x8026B558      E58D3004        false   STR      r3,[sp,#4]
+    Instruction     0       0x8026B55C      DAFFFFFA        true    BLE      {pc}-0x10 ; 0x8026b54c
+    Instruction     6       0x8026B560      EE1D3F30        false   MRC      p15,#0x0,r3,c13,c0,#1
+    Instruction     0       0x8026B564      E1A0100D        false   MOV      r1,sp
+    Instruction     0       0x8026B568      E3C12D7F        false   BIC      r2,r1,#0x1fc0
+    Instruction     0       0x8026B56C      E3C2203F        false   BIC      r2,r2,#0x3f
+    Instruction     0       0x8026B570      E59D1004        false   LDR      r1,[sp,#4]
+    Instruction     0       0x8026B574      E59F0010        false   LDR      r0,[pc,#16] ; [0x8026B58C] = 0x80550368
+    Instruction     0       0x8026B578      E592200C        false   LDR      r2,[r2,#0xc]
+    Instruction     0       0x8026B57C      E59221D0        false   LDR      r2,[r2,#0x1d0]
+    Instruction     0       0x8026B580      EB07A4CF        true    BL       {pc}+0x1e9344 ; 0x804548c4
+    Info                                    Tracing enabled
+    Instruction     13570831        0x8026B584      E28DD00C        false   ADD      sp,sp,#0xc
+    Instruction     0       0x8026B588      E8BD8000        true    LDM      sp!,{pc}
+    Timestamp                                       Timestamp: 17107041535
 
 2) Using perf framework:
 
@@ -312,6 +330,8 @@ controlling when tracing gets enabled based on when the process of interest is
 scheduled.  When configured in a system, Coresight PMUs will be listed when
 queried by the perf command line tool:
 
+.. code:: console
+
 	linaro@linaro-nano:~$ ./perf list pmu
 
 		List of pre-defined events (to be used in -e):
@@ -329,6 +349,8 @@ Coresight system will typically have more than one sink, the name of the sink to
 work with needs to be specified as an event option.  Names for sink to choose
 from are listed in sysFS under ($SYSFS)/bus/coresight/devices:
 
+.. code:: console
+
 	root@linaro-nano:~# ls /sys/bus/coresight/devices/
 		20010000.etf   20040000.funnel  20100000.stm  22040000.etm
 		22140000.etm  230c0000.funnel  23240000.etm 20030000.tpiu
@@ -343,7 +365,7 @@ to use for the trace session.
 
 More information on the above and other example on how to use Coresight with
 the perf tools can be found in the "HOWTO.md" file of the openCSD gitHub
-repository [3].
+repository [#third]_.
 
 2.1) AutoFDO analysis using the perf tools:
 
@@ -352,6 +374,8 @@ perf can be used to record and analyze trace of programs.
 Execution can be recorded using 'perf record' with the cs_etm event,
 specifying the name of the sink to record to, e.g:
 
+.. code:: console
+
     perf record -e cs_etm/@20070000.etr/u --per-thread
 
 The 'perf report' and 'perf script' commands can be used to analyze execution,
@@ -370,12 +394,16 @@ Generating coverage files for Feedback Directed Optimization: AutoFDO
 'perf inject' accepts the --itrace option in which case tracing data is
 removed and replaced with the synthesized events. e.g.
 
+.. code:: console
+
 	perf inject --itrace --strip -i perf.data -o perf.data.new
 
 Below is an example of using ARM ETM for autoFDO.  It requires autofdo
 (https://github.com/google/autofdo) and gcc version 5.  The bubble
 sort example is from the AutoFDO tutorial (https://gcc.gnu.org/wiki/AutoFDO/Tutorial).
 
+.. code:: console
+
 	$ gcc-5 -O3 sort.c -o sort
 	$ taskset -c 2 ./sort
 	Bubble sorting array of 30000 elements
@@ -403,28 +431,36 @@ difference is that clients are driving the trace capture rather
 than the program flow through the code.
 
 As with any other CoreSight component, specifics about the STM tracer can be
-found in sysfs with more information on each entry being found in [1]:
+found in sysfs with more information on each entry being found in [#first]_:
 
-root@genericarmv8:~# ls /sys/bus/coresight/devices/20100000.stm
-enable_source   hwevent_select  port_enable     subsystem       uevent
-hwevent_enable  mgmt            port_select     traceid
-root@genericarmv8:~#
+.. code:: console
+
+    root@genericarmv8:~# ls /sys/bus/coresight/devices/20100000.stm
+    enable_source   hwevent_select  port_enable     subsystem       uevent
+    hwevent_enable  mgmt            port_select     traceid
+    root@genericarmv8:~#
 
 Like any other source a sink needs to be identified and the STM enabled before
 being used:
 
-root@genericarmv8:~# echo 1 > /sys/bus/coresight/devices/20010000.etf/enable_sink
-root@genericarmv8:~# echo 1 > /sys/bus/coresight/devices/20100000.stm/enable_source
+.. code:: console
+
+    root@genericarmv8:~# echo 1 > /sys/bus/coresight/devices/20010000.etf/enable_sink
+    root@genericarmv8:~# echo 1 > /sys/bus/coresight/devices/20100000.stm/enable_source
 
 From there user space applications can request and use channels using the devfs
 interface provided for that purpose by the generic STM API:
 
-root@genericarmv8:~# ls -l /dev/20100000.stm
-crw-------    1 root     root       10,  61 Jan  3 18:11 /dev/20100000.stm
-root@genericarmv8:~#
+.. code:: console
+
+    root@genericarmv8:~# ls -l /dev/20100000.stm
+    crw-------    1 root     root       10,  61 Jan  3 18:11 /dev/20100000.stm
+    root@genericarmv8:~#
+
+Details on how to use the generic STM API can be found here [#second]_.
+
+.. [#first] Documentation/ABI/testing/sysfs-bus-coresight-devices-stm
 
-Details on how to use the generic STM API can be found here [2].
+.. [#second] Documentation/trace/stm.rst
 
-[1]. Documentation/ABI/testing/sysfs-bus-coresight-devices-stm
-[2]. Documentation/trace/stm.rst
-[3]. https://github.com/Linaro/perf-opencsd
+.. [#third] https://github.com/Linaro/perf-opencsd
diff --git a/Documentation/trace/index.rst b/Documentation/trace/index.rst
index 6b4107cf4b98..3330c5456bcb 100644
--- a/Documentation/trace/index.rst
+++ b/Documentation/trace/index.rst
@@ -23,3 +23,4 @@ Linux Tracing Technologies
    intel_th
    stm
    sys-t
+   coresight
-- 
2.11.0