Commit 66bd1333 authored by Mike Leach's avatar Mike Leach Committed by Mathieu Poirier
Browse files

Documentation: coresight: Fix documentation issue 



Fix the description of the directories and attributes used
in cs_etm as used by perf.

Drop the references to the 'configurations' sub-directory which
had been removed in an earlier version of the patchset.

Fixes: f71cd93d ("Documentation: coresight: Add documentation for CoreSight config")
Reported-by: default avatarGerman Gomex <german.gomez@arm.com>
Signed-off-by: default avatarMike Leach <mike.leach@linaro.org>
Link: https://lore.kernel.org/r/20211117164220.14883-1-mike.leach@linaro.org


Signed-off-by: default avatarMathieu Poirier <mathieu.poirier@linaro.org>
parent 934a5dc1

Documentation/trace/coresight/coresight-config.rst

+5 −11
Original line number Diff line number Diff line
@@ -211,19 +211,13 @@ also declared in the perf 'cs_etm' event infrastructure so that they can 
be selected when running trace under perf::



    $ ls /sys/devices/cs_etm

    configurations  format  perf_event_mux_interval_ms  sinks  type

    events  nr_addr_filters  power

    cpu0  cpu2  events  nr_addr_filters		power  subsystem  uevent

    cpu1  cpu3  format  perf_event_mux_interval_ms	sinks  type



Key directories here are 'configurations' - which lists the loaded

configurations, and 'events' - a generic perf directory which allows

selection on the perf command line.::

The key directory here is 'events' - a generic perf directory which allows

selection on the perf command line. As with the sinks entries, this provides

a hash of the configuration name.



    $ ls configurations/

    autofdo

    $ cat configurations/autofdo

    0xa7c3dddd



As with the sinks entries, this provides a hash of the configuration name.

The entry in the 'events' directory uses perfs built in syntax generator

to substitute the syntax for the name when evaluating the command::