linux-kernel - [tip: sched/core] sched/deadline: Update GRUB description in the documentation

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Message-ID: <168717269226.404.4412261506840976360.tip-bot2@tip-bot2>
Date:   Mon, 19 Jun 2023 11:04:52 -0000
From:   "tip-bot2 for Vineeth Pillai" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     "Vineeth Pillai (Google)" <vineeth@...byteword.org>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Daniel Bristot de Oliveira <bristot@...nel.org>,
        Juri Lelli <juri.lelli@...hat.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: sched/core] sched/deadline: Update GRUB description in the
 documentation

The following commit has been merged into the sched/core branch of tip:

Commit-ID:     e20f204c88d595c04fc9197794bb68c0fbabd902
Gitweb:        https://git.kernel.org/tip/e20f204c88d595c04fc9197794bb68c0fbabd902
Author:        Vineeth Pillai <vineeth@...byteword.org>
AuthorDate:    Tue, 30 May 2023 09:55:26 -04:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Fri, 16 Jun 2023 22:08:12 +02:00

sched/deadline: Update GRUB description in the documentation

Update the details of GRUB to reflect the updated logic.

Signed-off-by: Vineeth Pillai (Google) <vineeth@...byteword.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Reviewed-by: Daniel Bristot de Oliveira <bristot@...nel.org>
Acked-by: Juri Lelli <juri.lelli@...hat.com>
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 9d9be52..9fe4846 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: