From e20f204c88d595c04fc9197794bb68c0fbabd902 Mon Sep 17 00:00:00 2001 From: Vineeth Pillai Date: Tue, 30 May 2023 09:55:26 -0400 Subject: [PATCH] sched/deadline: Update GRUB description in the documentation Update the details of GRUB to reflect the updated logic. Signed-off-by: Vineeth Pillai (Google) Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Daniel Bristot de Oliveira Acked-by: Juri Lelli Link: https://lore.kernel.org/r/20230530135526.2385378-2-vineeth@bitbyteword.org --- 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..9fe4846079bb 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, (Umax - Uinact - Uextra) } / Umax) dt where: