Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x

Source file repositories/reference/linux-study-clean/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x

File Facts

System
Linux kernel
Corpus path
Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x
Extension
[no extension]
Size
19718 bytes
Lines
533
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: Documentation
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

What:		/sys/bus/coresight/devices/etm<N>/enable_source
Date:		April 2015
KernelVersion:  4.01
Contact:        Mathieu Poirier <mathieu.poirier@linaro.org>
Description:	(RW) Enable/disable tracing on this specific trace entiry.
		Enabling a source implies the source has been configured
		properly and a sink has been identidifed for it.  The path
		of coresight components linking the source to the sink is
		configured and managed automatically by the coresight framework.

What:		/sys/bus/coresight/devices/etm<N>/cpu
Date:		April 2015
KernelVersion:	4.01
Contact:	Mathieu Poirier <mathieu.poirier@linaro.org>
Description:	(Read) The CPU this tracing entity is associated with.

What:		/sys/bus/coresight/devices/etm<N>/nr_pe_cmp
Date:		April 2015
KernelVersion:	4.01
Contact:	Mathieu Poirier <mathieu.poirier@linaro.org>
Description:	(Read) Indicates the number of PE comparator inputs that are
		available for tracing.

What:		/sys/bus/coresight/devices/etm<N>/nr_addr_cmp
Date:		April 2015
KernelVersion:	4.01
Contact:	Mathieu Poirier <mathieu.poirier@linaro.org>
Description:	(Read) Indicates the number of address comparator pairs that are
		available for tracing.

What:		/sys/bus/coresight/devices/etm<N>/nr_cntr
Date:		April 2015
KernelVersion:	4.01
Contact:	Mathieu Poirier <mathieu.poirier@linaro.org>
Description:	(Read) Indicates the number of counters that are available for
		tracing.

What:		/sys/bus/coresight/devices/etm<N>/nr_ext_inp
Date:		April 2015
KernelVersion:	4.01
Contact:	Mathieu Poirier <mathieu.poirier@linaro.org>
Description:	(Read) Indicates how many external inputs are implemented.

What:		/sys/bus/coresight/devices/etm<N>/numcidc
Date:		April 2015
KernelVersion:	4.01
Contact:	Mathieu Poirier <mathieu.poirier@linaro.org>
Description:	(Read) Indicates the number of Context ID comparators that are
		available for tracing.

What:		/sys/bus/coresight/devices/etm<N>/numvmidc
Date:		April 2015
KernelVersion:	4.01
Contact:	Mathieu Poirier <mathieu.poirier@linaro.org>
Description:	(Read) Indicates the number of VMID comparators that are available
		for tracing.

What:		/sys/bus/coresight/devices/etm<N>/nrseqstate
Date:		April 2015
KernelVersion:	4.01
Contact:	Mathieu Poirier <mathieu.poirier@linaro.org>
Description:	(Read) Indicates the number of sequencer states that are
		implemented.

What:		/sys/bus/coresight/devices/etm<N>/nr_resource
Date:		April 2015
KernelVersion:	4.01
Contact:	Mathieu Poirier <mathieu.poirier@linaro.org>
Description:	(Read) Indicates the number of resource selection pairs that are
		available for tracing.

Annotation

Implementation Notes