sched/fair: Increase weight bits for avg_vruntime

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Due to the zero_vruntime patch, the deltas are now a lot smaller and
measurement with kernel-build and hackbench runs show about 45 bits
used.

This ensures avg_vruntime() tracks the full weight range, reducing
numerical artifacts in reweight and the like.

Also, lets keep the paranoid debug code around fow now.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: K Prateek Nayak <kprateek.nayak@amd.com>
Tested-by: Shubhang Kaushik <shubhang@os.amperecomputing.com>
Link: https://patch.msgid.link/20260219080624.942813440%40infradead.org

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This commit is contained in:

Peter Zijlstra 2025-09-26 21:43:56 +02:00

parent 9fe89f022c

commit 4823725d9d

4 changed files with 94 additions and 21 deletions

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14

kernel/sched/debug.c

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96

kernel/sched/fair.c

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2

kernel/sched/features.h

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3

kernel/sched/sched.h

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