Subject: Re: [PATCH v3 09/11] coresight: etm4x: docs: Update ABI doc for sysfs features added.

From: Mathieu Poirier <[email-masked]>
Date: Fri, 18 Oct 2019 10:16:18 -0600

On Tue, Oct 15, 2019 at 10:20:02PM +0100, Mike Leach wrote:
> Update document to include the new sysfs features added during this
> patchset.
> 
> Updated to reflect the new sysfs component nameing schema.

In most cases describing different actions in a changelog is a good indication
that more than one patch is needed.  This case is somewhat on the fence since
changes are trivial.  

Since Jonathan maintains the documentation subsystem the decision is left to
him.  Whether Jonathan wants the patch split or will simply take it as is:

Reviewed-by: Mathieu Poirier <[email-masked]>  

> 
> Signed-off-by: Mike Leach <[email-masked]>
> ---
>  .../testing/sysfs-bus-coresight-devices-etm4x | 183 +++++++++++-------
>  1 file changed, 115 insertions(+), 68 deletions(-)
> 
> diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x
> index 36258bc1b473..112c50ae9986 100644
> --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x
> +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x
> @@ -1,4 +1,4 @@
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/enable_source
> +What:		/sys/bus/coresight/devices/etm<N>/enable_source
>  Date:		April 2015
>  KernelVersion:  4.01
>  Contact:        Mathieu Poirier <[email-masked]>
> @@ -8,82 +8,82 @@ Description:	(RW) Enable/disable tracing on this specific trace entiry.
>  		of coresight components linking the source to the sink is
>  		configured and managed automatically by the coresight framework.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/cpu
> +What:		/sys/bus/coresight/devices/etm<N>/cpu
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) The CPU this tracing entity is associated with.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/nr_pe_cmp
> +What:		/sys/bus/coresight/devices/etm<N>/nr_pe_cmp
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Indicates the number of PE comparator inputs that are
>  		available for tracing.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/nr_addr_cmp
> +What:		/sys/bus/coresight/devices/etm<N>/nr_addr_cmp
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Indicates the number of address comparator pairs that are
>  		available for tracing.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/nr_cntr
> +What:		/sys/bus/coresight/devices/etm<N>/nr_cntr
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Indicates the number of counters that are available for
>  		tracing.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/nr_ext_inp
> +What:		/sys/bus/coresight/devices/etm<N>/nr_ext_inp
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Indicates how many external inputs are implemented.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/numcidc
> +What:		/sys/bus/coresight/devices/etm<N>/numcidc
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Indicates the number of Context ID comparators that are
>  		available for tracing.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/numvmidc
> +What:		/sys/bus/coresight/devices/etm<N>/numvmidc
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Indicates the number of VMID comparators that are available
>  		for tracing.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/nrseqstate
> +What:		/sys/bus/coresight/devices/etm<N>/nrseqstate
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Indicates the number of sequencer states that are
>  		implemented.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/nr_resource
> +What:		/sys/bus/coresight/devices/etm<N>/nr_resource
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Indicates the number of resource selection pairs that are
>  		available for tracing.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/nr_ss_cmp
> +What:		/sys/bus/coresight/devices/etm<N>/nr_ss_cmp
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Indicates the number of single-shot comparator controls that
>  		are available for tracing.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/reset
> +What:		/sys/bus/coresight/devices/etm<N>/reset
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(W) Cancels all configuration on a trace unit and set it back
>  		to its boot configuration.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/mode
> +What:		/sys/bus/coresight/devices/etm<N>/mode
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
> @@ -91,302 +91,349 @@ Description: 	(RW) Controls various modes supported by this ETM, for example
>  		P0 instruction tracing, branch broadcast, cycle counting and
>  		context ID tracing.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/pe
> +What:		/sys/bus/coresight/devices/etm<N>/pe
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) Controls which PE to trace.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/event
> +What:		/sys/bus/coresight/devices/etm<N>/event
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) Controls the tracing of arbitrary events from bank 0 to 3.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/event_instren
> +What:		/sys/bus/coresight/devices/etm<N>/event_instren
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) Controls the behavior of the events in bank 0 to 3.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/event_ts
> +What:		/sys/bus/coresight/devices/etm<N>/event_ts
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) Controls the insertion of global timestamps in the trace
>  		streams.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/syncfreq
> +What:		/sys/bus/coresight/devices/etm<N>/syncfreq
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) Controls how often trace synchronization requests occur.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/cyc_threshold
> +What:		/sys/bus/coresight/devices/etm<N>/cyc_threshold
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) Sets the threshold value for cycle counting.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/bb_ctrl
> +What:		/sys/bus/coresight/devices/etm<N>/bb_ctrl
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) Controls which regions in the memory map are enabled to
>  		use branch broadcasting.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/event_vinst
> +What:		/sys/bus/coresight/devices/etm<N>/event_vinst
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) Controls instruction trace filtering.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/s_exlevel_vinst
> +What:		/sys/bus/coresight/devices/etm<N>/s_exlevel_vinst
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) In Secure state, each bit controls whether instruction
>  		tracing is enabled for the corresponding exception level.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/ns_exlevel_vinst
> +What:		/sys/bus/coresight/devices/etm<N>/ns_exlevel_vinst
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) In non-secure state, each bit controls whether instruction
>  		tracing is enabled for the corresponding exception level.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/addr_idx
> +What:		/sys/bus/coresight/devices/etm<N>/addr_idx
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) Select which address comparator or pair (of comparators) to
>  		work with.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/addr_instdatatype
> +What:		/sys/bus/coresight/devices/etm<N>/addr_instdatatype
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) Controls what type of comparison the trace unit performs.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/addr_single
> +What:		/sys/bus/coresight/devices/etm<N>/addr_single
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) Used to setup single address comparator values.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/addr_range
> +What:		/sys/bus/coresight/devices/etm<N>/addr_range
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) Used to setup address range comparator values.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/seq_idx
> +What:		/sys/bus/coresight/devices/etm<N>/seq_idx
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) Select which sequensor.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/seq_state
> +What:		/sys/bus/coresight/devices/etm<N>/seq_state
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) Use this to set, or read, the sequencer state.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/seq_event
> +What:		/sys/bus/coresight/devices/etm<N>/seq_event
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) Moves the sequencer state to a specific state.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/seq_reset_event
> +What:		/sys/bus/coresight/devices/etm<N>/seq_reset_event
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) Moves the sequencer to state 0 when a programmed event
>  		occurs.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/cntr_idx
> +What:		/sys/bus/coresight/devices/etm<N>/cntr_idx
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) Select which counter unit to work with.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/cntrldvr
> +What:		/sys/bus/coresight/devices/etm<N>/cntrldvr
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) This sets or returns the reload count value of the
>  		specific counter.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/cntr_val
> +What:		/sys/bus/coresight/devices/etm<N>/cntr_val
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) This sets or returns the current count value of the
>                  specific counter.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/cntr_ctrl
> +What:		/sys/bus/coresight/devices/etm<N>/cntr_ctrl
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) Controls the operation of the selected counter.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/res_idx
> +What:		/sys/bus/coresight/devices/etm<N>/res_idx
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) Select which resource selection unit to work with.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/res_ctrl
> +What:		/sys/bus/coresight/devices/etm<N>/res_ctrl
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description: 	(RW) Controls the selection of the resources in the trace unit.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/ctxid_idx
> +What:		/sys/bus/coresight/devices/etm<N>/ctxid_idx
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(RW) Select which context ID comparator to work with.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/ctxid_pid
> +What:		/sys/bus/coresight/devices/etm<N>/ctxid_pid
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(RW) Get/Set the context ID comparator value to trigger on.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/ctxid_masks
> +What:		/sys/bus/coresight/devices/etm<N>/ctxid_masks
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(RW) Mask for all 8 context ID comparator value
>  		registers (if implemented).
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/vmid_idx
> +What:		/sys/bus/coresight/devices/etm<N>/vmid_idx
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(RW) Select which virtual machine ID comparator to work with.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/vmid_val
> +What:		/sys/bus/coresight/devices/etm<N>/vmid_val
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(RW) Get/Set the virtual machine ID comparator value to
>  		trigger on.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/vmid_masks
> +What:		/sys/bus/coresight/devices/etm<N>/vmid_masks
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(RW) Mask for all 8 virtual machine ID comparator value
>  		registers (if implemented).
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcoslsr
> +What:		/sys/bus/coresight/devices/etm<N>/addr_exlevel_s_ns
> +Date:		August 2019
> +KernelVersion:	5.4
> +Contact:	Mathieu Poirier <[email-masked]>
> +Description:	(RW) Set the Exception Level matching bits for secure and
> +		non-secure exception levels.
> +
> +What:		/sys/bus/coresight/devices/etm<N>/vinst_pe_cmp_start_stop
> +Date:		August 2019
> +KernelVersion:	5.4
> +Contact:	Mathieu Poirier <[email-masked]>
> +Description:	(RW) Access the start stop control register for PE input
> +		comparators.
> +
> +What:		/sys/bus/coresight/devices/etm<N>/addr_cmp_view
> +Date:		August 2019
> +KernelVersion:	5.4
> +Contact:	Mathieu Poirier <[email-masked]>
> +Description:	(R) Print the current settings for the selected address
> +		comparator.
> +
> +What:		/sys/bus/coresight/devices/etm<N>/sshot_idx
> +Date:		August 2019
> +KernelVersion:	5.4
> +Contact:	Mathieu Poirier <[email-masked]>
> +Description:	(RW) Select the single shot control register to access.
> +
> +What:		/sys/bus/coresight/devices/etm<N>/sshot_ctrl
> +Date:		August 2019
> +KernelVersion:	5.4
> +Contact:	Mathieu Poirier <[email-masked]>
> +Description:	(RW) Access the selected single shot control register.
> +
> +What:		/sys/bus/coresight/devices/etm<N>/sshot_status
> +Date:		August 2019
> +KernelVersion:	5.4
> +Contact:	Mathieu Poirier <[email-masked]>
> +Description:	(R) Print the current value of the selected single shot
> +		status register.
> +
> +What:		/sys/bus/coresight/devices/etm<N>/sshot_pe_ctrl
> +Date:		August 2019
> +KernelVersion:	5.4
> +Contact:	Mathieu Poirier <[email-masked]>
> +Description:	(RW) Access the selected single show PE comparator control
> +		register.
> +
> +What:		/sys/bus/coresight/devices/etm<N>/mgmt/trcoslsr
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Print the content of the OS Lock Status Register (0x304).
>  		The value it taken directly  from the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcpdcr
> +What:		/sys/bus/coresight/devices/etm<N>/mgmt/trcpdcr
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Print the content of the Power Down Control Register
>  		(0x310).  The value is taken directly from the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcpdsr
> +What:		/sys/bus/coresight/devices/etm<N>/mgmt/trcpdsr
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Print the content of the Power Down Status Register
>  		(0x314).  The value is taken directly from the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/mgmt/trclsr
> +What:		/sys/bus/coresight/devices/etm<N>/mgmt/trclsr
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Print the content of the SW Lock Status Register
>  		(0xFB4).  The value is taken directly from the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcauthstatus
> +What:		/sys/bus/coresight/devices/etm<N>/mgmt/trcauthstatus
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Print the content of the Authentication Status Register
>  		(0xFB8).  The value is taken directly from the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcdevid
> +What:		/sys/bus/coresight/devices/etm<N>/mgmt/trcdevid
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Print the content of the Device ID Register
>  		(0xFC8).  The value is taken directly from the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcdevtype
> +What:		/sys/bus/coresight/devices/etm<N>/mgmt/trcdevtype
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Print the content of the Device Type Register
>  		(0xFCC).  The value is taken directly from the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcpidr0
> +What:		/sys/bus/coresight/devices/etm<N>/mgmt/trcpidr0
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Print the content of the Peripheral ID0 Register
>  		(0xFE0).  The value is taken directly from the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcpidr1
> +What:		/sys/bus/coresight/devices/etm<N>/mgmt/trcpidr1
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Print the content of the Peripheral ID1 Register
>  		(0xFE4).  The value is taken directly from the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcpidr2
> +What:		/sys/bus/coresight/devices/etm<N>/mgmt/trcpidr2
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Print the content of the Peripheral ID2 Register
>  		(0xFE8).  The value is taken directly from the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcpidr3
> +What:		/sys/bus/coresight/devices/etm<N>/mgmt/trcpidr3
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Print the content of the Peripheral ID3 Register
>  		(0xFEC).  The value is taken directly from the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcconfig
> +What:		/sys/bus/coresight/devices/etm<N>/mgmt/trcconfig
>  Date:		February 2016
>  KernelVersion:	4.07
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Print the content of the trace configuration register
>  		(0x010) as currently set by SW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/mgmt/trctraceid
> +What:		/sys/bus/coresight/devices/etm<N>/mgmt/trctraceid
>  Date:		February 2016
>  KernelVersion:	4.07
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Print the content of the trace ID register (0x040).
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr0
> +What:		/sys/bus/coresight/devices/etm<N>/trcidr/trcidr0
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Returns the tracing capabilities of the trace unit (0x1E0).
>  		The value is taken directly from the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr1
> +What:		/sys/bus/coresight/devices/etm<N>/trcidr/trcidr1
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Returns the tracing capabilities of the trace unit (0x1E4).
>  		The value is taken directly from the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr2
> +What:		/sys/bus/coresight/devices/etm<N>/trcidr/trcidr2
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
> @@ -394,7 +441,7 @@ Description:	(R) Returns the maximum size of the data value, data address,
>  		VMID, context ID and instuction address in the trace unit
>  		(0x1E8).  The value is taken directly from the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr3
> +What:		/sys/bus/coresight/devices/etm<N>/trcidr/trcidr3
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
> @@ -403,42 +450,42 @@ Description:	(R) Returns the value associated with various resources
>  		architecture specification for more details (0x1E8).
>  		The value is taken directly from the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr4
> +What:		/sys/bus/coresight/devices/etm<N>/trcidr/trcidr4
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Returns how many resources the trace unit supports (0x1F0).
>  		The value is taken directly from the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr5
> +What:		/sys/bus/coresight/devices/etm<N>/trcidr/trcidr5
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Returns how many resources the trace unit supports (0x1F4).
>  		The value is taken directly from the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr8
> +What:		/sys/bus/coresight/devices/etm<N>/trcidr/trcidr8
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Returns the maximum speculation depth of the instruction
>  		trace stream. (0x180).  The value is taken directly from the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr9
> +What:		/sys/bus/coresight/devices/etm<N>/trcidr/trcidr9
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Returns the number of P0 right-hand keys that the trace unit
>  		can use (0x184).  The value is taken directly from the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr10
> +What:		/sys/bus/coresight/devices/etm<N>/trcidr/trcidr10
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
>  Description:	(R) Returns the number of P1 right-hand keys that the trace unit
>  		can use (0x188).  The value is taken directly from the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr11
> +What:		/sys/bus/coresight/devices/etm<N>/trcidr/trcidr11
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
> @@ -446,7 +493,7 @@ Description:	(R) Returns the number of special P1 right-hand keys that the
>  		trace unit can use (0x18C).  The value is taken directly from
>  		the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr12
> +What:		/sys/bus/coresight/devices/etm<N>/trcidr/trcidr12
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
> @@ -454,7 +501,7 @@ Description:	(R) Returns the number of conditional P1 right-hand keys that
>  		the trace unit can use (0x190).  The value is taken directly
>  		from the HW.
>  
> -What:		/sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr13
> +What:		/sys/bus/coresight/devices/etm<N>/trcidr/trcidr13
>  Date:		April 2015
>  KernelVersion:	4.01
>  Contact:	Mathieu Poirier <[email-masked]>
> -- 
> 2.17.1
> 

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