| Message ID | 20230811034600.944386-4-anshuman.khandual@arm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | coresight: etm: Make cycle count threshold user configurable | expand |
On Fri, 11 Aug 2023 at 04:46, Anshuman Khandual <anshuman.khandual@arm.com> wrote: > > This updates config option to include 'cc_threshold' tunable value. > > Cc: Suzuki K Poulose <suzuki.poulose@arm.com> > Cc: Mike Leach <mike.leach@linaro.org> > Cc: James Clark <james.clark@arm.com> > Cc: Jonathan Corbet <corbet@lwn.net> > Cc: coresight@lists.linaro.org > Cc: linux-arm-kernel@lists.infradead.org > Cc: linux-doc@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> > --- > Documentation/trace/coresight/coresight.rst | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/Documentation/trace/coresight/coresight.rst b/Documentation/trace/coresight/coresight.rst > index 4a71ea6cb390..ce55adb80b82 100644 > --- a/Documentation/trace/coresight/coresight.rst > +++ b/Documentation/trace/coresight/coresight.rst > @@ -624,6 +624,10 @@ They are also listed in the folder /sys/bus/event_source/devices/cs_etm/format/ > * - timestamp > - Session local version of the system wide setting: :ref:`ETMv4_MODE_TIMESTAMP > <coresight-timestamp>` > + * - cc_threshold > + - Cycle count threshold value. If nothing is provided here or the provided value is 0, then the > + default value i.e 0x100 will be used. If provided value is less than minimum cycles threshold > + value, as indicated via TRCIDR3.CCITMIN, then the minimum value will be used instead. > > How to use the STM module > ------------------------- > -- > 2.25.1 > Reviewed by: Mike Leach <mike.leach@linaro.org>
diff --git a/Documentation/trace/coresight/coresight.rst b/Documentation/trace/coresight/coresight.rst index 4a71ea6cb390..ce55adb80b82 100644 --- a/Documentation/trace/coresight/coresight.rst +++ b/Documentation/trace/coresight/coresight.rst @@ -624,6 +624,10 @@ They are also listed in the folder /sys/bus/event_source/devices/cs_etm/format/ * - timestamp - Session local version of the system wide setting: :ref:`ETMv4_MODE_TIMESTAMP <coresight-timestamp>` + * - cc_threshold + - Cycle count threshold value. If nothing is provided here or the provided value is 0, then the + default value i.e 0x100 will be used. If provided value is less than minimum cycles threshold + value, as indicated via TRCIDR3.CCITMIN, then the minimum value will be used instead. How to use the STM module -------------------------
This updates config option to include 'cc_threshold' tunable value. Cc: Suzuki K Poulose <suzuki.poulose@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: James Clark <james.clark@arm.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-doc@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> --- Documentation/trace/coresight/coresight.rst | 4 ++++ 1 file changed, 4 insertions(+)