From: Vineeth Pillai Date: Tue, 30 May 2023 13:55:26 +0000 (-0400) Subject: sched/deadline: Update GRUB description in the documentation X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e20f204c88d595c04fc9197794bb68c0fbabd902;p=linux.git 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 --- diff --git a/Documentation/scheduler/sched-deadline.rst b/Documentation/scheduler/sched-deadline.rst index 9d9be52f221a5..9fe4846079bbe 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: