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/linux/Documentation/devicetree/bindings/arm/
H A Darm,coresight-dummy-source.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/arm/arm,coresight-dummy-source.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: ARM Coresight Dummy source component
10 CoreSight components are compliant with the ARM CoreSight architecture
14 through the intermediate links connecting the source to the currently selected
17 The Coresight dummy source component is for the specific coresight source
19 there would be Coresight source trace components on sub-processor which
20 are connected to AP processor via debug bus. For these devices, a dummy driver
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H A Darm,coresight-dummy-sink.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/arm/arm,coresight-dummy-sink.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: ARM Coresight Dummy sink component
10 CoreSight components are compliant with the ARM CoreSight architecture
14 through the intermediate links connecting the source to the currently selected
17 The Coresight dummy sink component is for the specific coresight sink devices
18 kernel don't have permission to access or configure, e.g., CoreSight EUD on
19 Qualcomm platforms. It is a mini-USB hub implemented to support the USB-based
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/linux/Documentation/trace/coresight/
H A Dcoresight-dummy.rst1 .. SPDX-License-Identifier: GPL-2.0
4 Coresight Dummy Trace Module
11 ------------
13 The Coresight dummy trace module is for the specific devices that kernel don't
14 have permission to access or configure, e.g., CoreSight TPDMs on Qualcomm
15 platforms. For these devices, a dummy driver is needed to register them as
16 Coresight devices. The module may also be used to define components that may
18 It provides Coresight API for operations on dummy devices, such as enabling and
19 disabling them. It also provides the Coresight dummy sink/source paths for
23 --------------
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/linux/drivers/hwtracing/coresight/
H A Dcoresight-dummy.c1 // SPDX-License-Identifier: GPL-2.0
6 #include <linux/coresight.h>
13 #include "coresight-priv.h"
28 return -EBUSY; in dummy_source_enable()
30 dev_dbg(csdev->dev.parent, "Dummy source enabled\n"); in dummy_source_enable()
39 dev_dbg(csdev->dev.parent, "Dummy source disabled\n"); in dummy_source_disable()
45 dev_dbg(csdev->dev.parent, "Dummy sink enabled\n"); in dummy_sink_enable()
52 dev_dbg(csdev->dev.parent, "Dummy sink disabled\n"); in dummy_sink_disable()
77 struct device *dev = &pdev->dev; in dummy_probe()
78 struct device_node *node = dev->of_node; in dummy_probe()
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H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
3 # Coresight configuration
5 menuconfig CORESIGHT config
6 tristate "CoreSight Tracing Support"
13 This framework provides a kernel interface for the CoreSight debug
15 a topological view of the CoreSight components based on a DT
17 trace source gets enabled.
20 module will be called coresight.
22 if CORESIGHT
24 tristate "CoreSight Link and Sink drivers"
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H A Dcoresight-trbe.c1 // SPDX-License-Identifier: GPL-2.0
3 * This driver enables Trace Buffer Extension (TRBE) as a per-cpu coresight
4 * sink device could then pair with an appropriate per-cpu coresight source
22 #include "coresight-self-hosted-trace.h"
23 #include "coresight-trbe.h"
25 #define PERF_IDX2OFF(idx, buf) ((idx) % ((buf)->nr_pages << PAGE_SHIFT))
31 * formatting the trace data, unlike the legacy CoreSight
39 * A-Sync, Trace Info, Trace On, Address, Atom.
81 * a trace session. Thus we need a quicker access to per-CPU
90 * - Not duplicating the detection logic
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/linux/drivers/hwtracing/stm/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
8 Examples of such devices are Intel(R) Trace Hub and Coresight STM.
20 exclusively until the MIPI SyS-T support was added. Use this
30 tristate "MIPI SyS-T STM framing protocol driver"
33 This is an implementation of MIPI SyS-T protocol to be used
36 means of trace source identification, etc.
44 tristate "Dummy STM driver"
46 This is a simple dummy device that pretends to be an stm device
54 This is a kernel space trace source that sends kernel log
63 This is a kernel space trace source that sends periodic
/linux/Documentation/trace/
H A Dstm.rst1 .. SPDX-License-Identifier: GPL-2.0
34 associated with it, located in "stp-policy" subsystem directory in
40 $ ls /config/stp-policy/dummy_stm.my-policy/user
42 $ cat /config/stp-policy/dummy_stm.my-policy/user/masters
44 $ cat /config/stp-policy/dummy_stm.my-policy/user/channels
49 through 127 in it. Now, any producer (trace source) identifying itself
53 These rules can be nested, for example, one can define a rule "dummy"
55 be used for trace sources with the id string of "user/dummy".
60 In order to find an appropriate policy node for a given trace source,
61 several mechanisms can be used. First, a trace source can explicitly
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/linux/arch/arm64/boot/dts/qcom/
H A Dsa8775p.dtsi1 // SPDX-License-Identifier: BSD-3-Clause
7 #include <dt-bindings/interconnect/qcom,icc.h>
8 #include <dt-bindings/interrupt-controller/arm-gic.h>
9 #include <dt-bindings/clock/qcom,rpmh.h>
10 #include <dt-bindings/clock/qcom,sa8775p-gcc.h>
11 #include <dt-bindings/clock/qcom,sa8775p-gpucc.h>
12 #include <dt-bindings/dma/qcom-gpi.h>
13 #include <dt-bindings/interconnect/qcom,sa8775p-rpmh.h>
14 #include <dt-bindings/mailbox/qcom-ipcc.h>
15 #include <dt-bindings/firmware/qcom,scm.h>
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/linux/tools/perf/util/
H A Dcs-etm.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright(C) 2015-2018 Linaro Limited.
12 #include <linux/coresight-pmu.h>
22 #include "cs-etm.h"
23 #include "cs-etm-decoder/cs-etm-decoder.h"
37 #include "thread-stack.h"
40 #include "util/synthetic-events.h"
61 * Per-thread ignores the trace channel ID and instead assumes that
151 #define SINK_UNSET ((u32) -1)
168 inode = intlist__find(etmq->traceid_list, trace_chan_id); in cs_etm__get_magic()
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