Commit 5c0342ca authored by Claudio Scordino's avatar Claudio Scordino Committed by Ingo Molnar
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sched/deadline: Fix the description of runtime accounting in the documentation

Signed-off-by: default avatarClaudio Scordino <>
Signed-off-by: default avatarLuca Abeni <>
Acked-by: default avatarDaniel Bristot de Oliveira <>
Acked-by: default avatarPeter Zijlstra <>
Cc: Jonathan Corbet <>
Cc: Linus Torvalds <>
Cc: Mathieu Poirier <>
Cc: Thomas Gleixner <>
Cc: Tommaso Cucinotta <>

Signed-off-by: default avatarIngo Molnar <>
parent b29c6ef7
......@@ -204,10 +204,17 @@ CONTENTS
It does so by decrementing the runtime of the executing task Ti at a pace equal
dq = -max{ Ui, (1 - Uinact) } dt
dq = -max{ Ui / Umax, (1 - Uinact - Uextra) } dt
where Uinact is the inactive utilization, computed as (this_bq - running_bw),
and Ui is the bandwidth of task Ti.
- Ui is the bandwidth of task Ti;
- Umax is the maximum reclaimable utilization (subjected to RT throttling
- Uinact is the (per runqueue) inactive utilization, computed as
(this_bq - running_bw);
- Uextra is the (per runqueue) extra reclaimable utilization
(subjected to RT throttling limits).
Let's now see a trivial example of two deadline tasks with runtime equal
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