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| author | Carlos Llamas <cmllamas@google.com> | 2021-07-15 06:18:04 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-21 14:46:36 +0300 |
| commit | 06e1721d2a265d1247093f5ad5ae2958ef10a604 (patch) | |
| tree | 82fb740d3f7126010bc120df22da3975e90fec44 /Documentation/admin-guide/binderfs.rst | |
| parent | fc470abf54b2bd6e539065e07905e767b443d719 (diff) | |
| download | linux-06e1721d2a265d1247093f5ad5ae2958ef10a604.tar.xz | |
docs: binderfs: add section about feature files
Document how binder feature files can be used to determine whether a
feature is supported by the binder driver. "oneway_spam_detection" is
used as an example as it is the first available feature file.
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Carlos Llamas <cmllamas@google.com>
Link: https://lore.kernel.org/r/20210715031805.1725878-2-cmllamas@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/admin-guide/binderfs.rst')
| -rw-r--r-- | Documentation/admin-guide/binderfs.rst | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/admin-guide/binderfs.rst b/Documentation/admin-guide/binderfs.rst index 199d84314a14..41a4db00df8d 100644 --- a/Documentation/admin-guide/binderfs.rst +++ b/Documentation/admin-guide/binderfs.rst @@ -72,3 +72,16 @@ that the `rm() <rm_>`_ tool can be used to delete them. Note that the ``binder-control`` device cannot be deleted since this would make the binderfs instance unusable. The ``binder-control`` device will be deleted when the binderfs instance is unmounted and all references to it have been dropped. + +Binder features +--------------- + +Assuming an instance of binderfs has been mounted at ``/dev/binderfs``, the +features supported by the binder driver can be located under +``/dev/binderfs/features/``. The presence of individual files can be tested +to determine whether a particular feature is supported by the driver. + +Example:: + + cat /dev/binderfs/features/oneway_spam_detection + 1 |