[PATCH v4 2/2] sched/deadline: Update GRUB description in the documentation

From: Vineeth Pillai
Date: Fri May 26 2023 - 10:55:54 EST


Update the details of GRUB to reflect the updated logic.

Signed-off-by: Vineeth Pillai (Google) <vineeth@xxxxxxxxxxxxxxx>
---
Documentation/scheduler/sched-deadline.rst | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Documentation/scheduler/sched-deadline.rst b/Documentation/scheduler/sched-deadline.rst
index 9d9be52f221a..d9f9f10c2191 100644
--- a/Documentation/scheduler/sched-deadline.rst
+++ b/Documentation/scheduler/sched-deadline.rst
@@ -203,12 +203,15 @@ Deadline Task Scheduling
- Total bandwidth (this_bw): this is the sum of all tasks "belonging" to the
runqueue, including the tasks in Inactive state.

+ - Maximum usable bandwidth (max_bw): This is the maximum bandwidth usable by
+ deadline tasks and is currently set to the RT capacity.
+

The algorithm reclaims the bandwidth of the tasks in Inactive state.
It does so by decrementing the runtime of the executing task Ti at a pace equal
to

- dq = -max{ Ui / Umax, (1 - Uinact - Uextra) } dt
+ dq = -(max{ Ui, (1 - Uinact - Uextra) } / Umax) dt

where:

--
2.40.1