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| author | Peter Zijlstra <peterz@infradead.org> | 2025-04-22 13:16:28 +0300 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2026-03-12 14:09:13 +0300 |
| commit | 22a1536b3f5acfb3a5c186653a235716368e3375 (patch) | |
| tree | 2921a57af7e3ba0e3618c6e285f1ebebbec1fdb3 /include/linux | |
| parent | c1591343440ef1fd81c06281b8d1f9be45e90a9f (diff) | |
| download | linux-22a1536b3f5acfb3a5c186653a235716368e3375.tar.xz | |
sched/fair: Fix lag clamp
[ Upstream commit 6e3c0a4e1ad1e0455b7880fad02b3ee179f56c09 ]
Vincent reported that he was seeing undue lag clamping in a mixed
slice workload. Implement the max_slice tracking as per the todo
comment.
Fixes: 147f3efaa241 ("sched/fair: Implement an EEVDF-like scheduling policy")
Reported-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Vincent Guittot <vincent.guittot@linaro.org>
Tested-by: K Prateek Nayak <kprateek.nayak@amd.com>
Tested-by: Shubhang Kaushik <shubhang@os.amperecomputing.com>
Link: https://patch.msgid.link/20250422101628.GA33555@noisy.programming.kicks-ass.net
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/sched.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 6ad294330c0b..3e2005e9e2f0 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -574,6 +574,7 @@ struct sched_entity { u64 deadline; u64 min_vruntime; u64 min_slice; + u64 max_slice; struct list_head group_node; unsigned char on_rq; |