]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
sched/eevdf: Always update V if se->on_rq when reweighting
authorTianchen Ding <dtcccc@linux.alibaba.com>
Wed, 6 Mar 2024 02:21:32 +0000 (10:21 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 2 May 2024 14:35:34 +0000 (16:35 +0200)
commit5154b1e37231a766f1d24fda9da6fd2b2f0d555f
treebbfa767a1e38f5a38ab5c03a502b26f3f4e9c786
parentcf89c33a92036a606a1e9b463834c9b57ea7caa6
sched/eevdf: Always update V if se->on_rq when reweighting

[ Upstream commit 11b1b8bc2b98e21ddf47e08b56c21502c685b2c3 ]

reweight_eevdf() needs the latest V to do accurate calculation for new
ve and vd. So update V unconditionally when se is runnable.

Fixes: eab03c23c2a1 ("sched/eevdf: Fix vruntime adjustment on reweight")
Suggested-by: Abel Wu <wuyun.abel@bytedance.com>
Signed-off-by: Tianchen Ding <dtcccc@linux.alibaba.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Abel Wu <wuyun.abel@bytedance.com>
Tested-by: K Prateek Nayak <kprateek.nayak@amd.com>
Tested-by: Chen Yu <yu.c.chen@intel.com>
Link: https://lore.kernel.org/r/20240306022133.81008-2-dtcccc@linux.alibaba.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
kernel/sched/fair.c