From: Ankit Jain <ankitja@vmware.com>
To: juri.lelli@redhat.com, bristot@redhat.com,
l.stach@pengutronix.de, suhui_kernel@163.com,
msimmons@redhat.com, peterz@infradead.org, glenn@aurora.tech,
stable@vger.kernel.org, linux-kernel@vger.kernel.org,
gregkh@linuxfoundation.org
Cc: srivatsab@vmware.com, srivatsa@csail.mit.edu, akaher@vmware.com,
amakhalov@vmware.com, vsirnapalli@vmware.com,
sturlapati@vmware.com, bordoloih@vmware.com,
keerthanak@vmware.com, Ankit Jain <ankitja@vmware.com>
Subject: [PATCH v4.19.y 0/4] sched/deadline: Fix panic due to nested priority inheritance
Date: Mon, 22 Aug 2022 13:13:44 +0530 [thread overview]
Message-ID: <20220822074348.218135-1-ankitja@vmware.com> (raw)
When a CFS task that was boosted by a SCHED_DEADLINE
task boosts another CFS task (nested priority inheritance),
Kernel panic is observed.
Fixing priority inheritance changes the way how sched_deadline
attributes are being inherited from original donor task.
Additional supporting patches are added to fix throttling of
boosted tasks.
Daniel Bristot de Oliveira (1):
sched/deadline: Unthrottle PI boosted threads while enqueuing
Lucas Stach (1):
sched/deadline: Fix stale throttling on de-/boosted tasks
Juri Lelli (1):
sched/deadline: Fix priority inheritance with multiple scheduling
classes
Hui Su (1):
kernel/sched: Remove dl_boosted flag comment
include/linux/sched.h | 13 ++--
kernel/sched/core.c | 11 ++--
kernel/sched/deadline.c | 131 +++++++++++++++++++++++++---------------
3 files changed, 96 insertions(+), 59 deletions(-)
--
2.34.1
next reply other threads:[~2022-08-22 7:47 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-22 7:43 Ankit Jain [this message]
2022-08-22 7:43 ` [PATCH v4.19.y 1/4] sched/deadline: Unthrottle PI boosted threads while enqueuing Ankit Jain
2022-08-22 7:43 ` [PATCH v4.19.y 2/4] sched/deadline: Fix stale throttling on de-/boosted tasks Ankit Jain
2022-08-22 7:43 ` [PATCH v4.19.y 3/4] sched/deadline: Fix priority inheritance with multiple scheduling classes Ankit Jain
2022-08-22 7:43 ` [PATCH v4.19.y 4/4] kernel/sched: Remove dl_boosted flag comment Ankit Jain
2022-08-25 12:31 ` [PATCH v4.19.y 0/4] sched/deadline: Fix panic due to nested priority inheritance Greg KH
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