From: Mike Leach <mike.leach@linaro.org>
To: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org, mathieu.poirier@linaro.org,
suzuki.poulose@arm.com, leo.yan@linaro.org,
Mike Leach <mike.leach@linaro.org>
Subject: [PATCH v2 5/5] Documentation: coresight: Update coresight configuration docs
Date: Tue, 19 Oct 2021 20:13:51 +0100 [thread overview]
Message-ID: <20211019191351.10242-6-mike.leach@linaro.org> (raw)
In-Reply-To: <20211019191351.10242-1-mike.leach@linaro.org>
Update the CoreSight System Configuration document to cover the
use of loadable modules to add configurations and features
to the system.
Signed-off-by: Mike Leach <mike.leach@linaro.org>
---
.../trace/coresight/coresight-config.rst | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/Documentation/trace/coresight/coresight-config.rst b/Documentation/trace/coresight/coresight-config.rst
index a4e3ef295240..911db4da7f99 100644
--- a/Documentation/trace/coresight/coresight-config.rst
+++ b/Documentation/trace/coresight/coresight-config.rst
@@ -242,3 +242,22 @@ A preset to override the current parameter values can also be selected::
When configurations are selected in this way, then the trace sink used is
automatically selected.
+
+Creating and Loading Custom Configurations
+==========================================
+
+Custom configurations and / or features can be dynamically loaded into the
+system by using a loadable module.
+
+An example of a custom configuration is found in ./samples/coresight.
+
+This creates a new configuration that uses the existing built in
+strobing feature, but provides a different set of presets.
+
+When the module is loaded, then the configuration appears in the configfs
+file system and is selectable in the same way as the built in configuration
+described above.
+
+Configurations can use previously loaded features. The system will ensure
+that it is not possible to unload a feature that is currently in use, by
+enforcing the unload order as the strict reverse of the load order.
--
2.17.1
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next prev parent reply other threads:[~2021-10-19 19:16 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-19 19:13 [PATCH v2 0/5] coresight: syscfg: dynamic load Mike Leach
2021-10-19 19:13 ` [PATCH v2 1/5] coresight: syscfg: Update API to allow dynamic load and unload Mike Leach
2021-11-09 17:59 ` Mathieu Poirier
2021-10-19 19:13 ` [PATCH v2 2/5] coresight: syscfg: Update load API for config loadable modules Mike Leach
2021-10-19 19:13 ` [PATCH v2 3/5] coresight: syscfg: Example CoreSight configuration loadable module Mike Leach
2021-10-19 19:13 ` [PATCH v2 4/5] coresight: configfs: Allow configfs to activate configuration Mike Leach
2021-11-11 17:23 ` Mathieu Poirier
2021-10-19 19:13 ` Mike Leach [this message]
2021-10-20 10:08 ` [PATCH v2 5/5] Documentation: coresight: Update coresight configuration docs German Gomez
2021-10-20 14:00 ` Mike Leach
2021-11-11 17:35 ` [PATCH v2 0/5] coresight: syscfg: dynamic load Mathieu Poirier
2021-11-17 13:59 ` Mike Leach
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