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-rw-r--r--src/gallium/docs/source/distro.rst16
1 files changed, 16 insertions, 0 deletions
diff --git a/src/gallium/docs/source/distro.rst b/src/gallium/docs/source/distro.rst
index 0ef9fe2645..0fabb639ad 100644
--- a/src/gallium/docs/source/distro.rst
+++ b/src/gallium/docs/source/distro.rst
@@ -103,6 +103,22 @@ Xorg XFree86 DDX
Auxiliary
---------
+OS
+^^
+
+The OS module contains the abstractions for basic operating system services:
+
+* memory allocation
+* simple message logging
+* obtaining run-time configuration option
+* threading primitives
+
+This is the bare minimum required to port Gallium to a new platform.
+
+The OS module already provides the implementations of these abstractions for
+the most common platforms. When targeting an embedded platform no
+implementation will be provided -- these must be provided separately.
+
CSO Cache
^^^^^^^^^