]> 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 14:32:49 +0000 (16:32 +0200)
commitdc21662b5b3430d405fea5bb0d30eda4e85a59af
treec1806c65f4d0a3f743b2dccaaf10ee82508b8a83
parent73224a5d2180066c7fe05b4656647601ba08d588
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