sched/fair: Fair server interface

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Add an interface for fair server setup on debugfs.

Each CPU has two files under /debug/sched/fair_server/cpu{ID}:

 - runtime: set runtime in ns
 - period:  set period in ns

This then leaves /proc/sys/kernel/sched_rt_{period,runtime}_us to set
bounds on admission control.

The interface also add the server to the dl bandwidth accounting.

Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Juri Lelli <juri.lelli@redhat.com>
Link: https://lore.kernel.org/r/a9ef9fc69bcedb44bddc9bc34f2b313296052819.1716811044.git.bristot@kernel.org

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This commit is contained in:

Daniel Bristot de Oliveira 2024-05-27 14:06:52 +02:00 • committed by Peter Zijlstra

parent a110a81c52

commit d741f297bc

4 changed files with 256 additions and 17 deletions

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103

kernel/sched/deadline.c

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159

kernel/sched/debug.c

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3

kernel/sched/sched.h

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8

kernel/sched/topology.c

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