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-rw-r--r--Documentation/admin-guide/cgroup-v2.rst3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst
index 1521c7e554f5..3deacdc5e6d2 100644
--- a/Documentation/admin-guide/cgroup-v2.rst
+++ b/Documentation/admin-guide/cgroup-v2.rst
@@ -1529,6 +1529,9 @@ IO Interface Files
The IO cost model isn't expected to be accurate in absolute
sense and is scaled to the device behavior dynamically.
+ If needed, tools/cgroup/iocost_coef_gen.py can be used to
+ generate device-specific coefficients.
+
io.weight
A read-write flat-keyed file which exists on non-root cgroups.
The default is "default 100".