From: sashiko-bot@kernel.org
To: "K Prateek Nayak" <kprateek.nayak@amd.com>
Cc: "Alexander Gordeev" <agordeev@linux.ibm.com>,
linux-s390@vger.kernel.org,
"Christian Borntraeger" <borntraeger@linux.ibm.com>,
"Vasily Gorbik" <gor@linux.ibm.com>,
"Heiko Carstens" <hca@linux.ibm.com>
Subject: Re: [RFC PATCH v3 12/13] sched/fair: Allocate nohz.idle_cpus_mask during sched_init_smp()
Date: Fri, 02 Oct 2026 09:13:28 +0000 [thread overview]
Message-ID: <20261002091328.C566D1F000FF@smtp.kernel.org> (raw)
In-Reply-To: <20261001192849.74788-13-kprateek.nayak@amd.com>
> nohz.idle_cpus_mask is not required soon after early initialization
> since the boot CPU cannot go tickless idle before CPU is activated and
> tick is started.
>
> Defer allocation of nohz.idle_cpus_mask to sched_init_smp() via
> init_sched_fair_class_smp(). This is preparation to convert
> nohz.idle_cpus_mask to sparsebitmap (sbm) which requires architectures
> to finish smp_prepare before initializing the core bits.
>
> No functional changes intended.
>
> Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261001192849.74788-1-kprateek.nayak@amd.com?part=12
next prev parent reply other threads:[~2026-10-02 9:13 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-01 19:28 [RFC PATCH v3 00/13] lib, sched: Introduce sparsebitmap (sbm) K Prateek Nayak
2026-10-01 19:28 ` [RFC PATCH v3 01/13] lib/sbm: Introduce helpers for architectures to configure LLC properties K Prateek Nayak
2026-10-02 9:13 ` sashiko-bot
2026-10-07 5:43 ` Shrikanth Hegde
2026-10-12 2:11 ` K Prateek Nayak
2026-10-12 22:22 ` Tim Chen
2026-10-01 19:28 ` [RFC PATCH v3 02/13] drivers/base/arch_topology: Add support for initializing sbm topology K Prateek Nayak
2026-10-02 9:13 ` sashiko-bot
2026-10-12 23:41 ` Tim Chen
2026-10-01 19:28 ` [RFC PATCH v3 03/13] LoongArch: Initialize CPU _PXM relation for disabled CPUs from SRAT K Prateek Nayak
2026-10-02 9:13 ` sashiko-bot
2026-10-01 19:28 ` [RFC PATCH v3 04/13] LoongArch: Configure sbm topology during SMP preparation K Prateek Nayak
2026-10-02 9:13 ` sashiko-bot
2026-10-07 3:51 ` [RFC PATCH v3.1 " K Prateek Nayak
2026-10-01 19:28 ` [RFC PATCH v3 05/13] MIPS: Initialize sbm topology on multi-node systems K Prateek Nayak
2026-10-02 9:13 ` sashiko-bot
2026-10-01 19:28 ` [RFC PATCH v3 06/13] powerpc/setup: Initialize sbm topology based on coregroup / NUMA topology K Prateek Nayak
2026-10-02 9:13 ` sashiko-bot
2026-10-07 14:43 ` Shrikanth Hegde
2026-10-12 2:29 ` K Prateek Nayak
2026-10-01 19:28 ` [RFC PATCH v3 07/13] s390/topology: Initialize sbm topology during topology_init_early() K Prateek Nayak
2026-10-02 9:13 ` sashiko-bot
2026-10-07 10:19 ` Mete Durlu
2026-10-12 2:20 ` K Prateek Nayak
2026-10-13 10:14 ` Mete Durlu
2026-10-01 19:28 ` [RFC PATCH v3 08/13] sparc64: Initialize sbm topology on multi-LLC system K Prateek Nayak
2026-10-02 9:13 ` sashiko-bot
2026-10-01 19:28 ` [RFC PATCH v3 09/13] x86/cpu/topology: Initialize sbm topology after topology parsing K Prateek Nayak
2026-10-02 9:13 ` sashiko-bot
2026-10-03 8:27 ` Chen Yu
2026-10-04 6:17 ` K Prateek Nayak
2026-10-07 3:52 ` [RFC PATCH v3.1 " K Prateek Nayak
2026-10-01 19:28 ` [RFC PATCH v3 10/13] lib/sbm: Dynamically allocate sbm index when CPU is activated K Prateek Nayak
2026-10-02 9:13 ` sashiko-bot
2026-10-01 19:28 ` [RFC PATCH v3 11/13] lib/sbm: Add helpers to allocate, set, clear, and traverse the bits on sbm K Prateek Nayak
2026-10-02 9:13 ` sashiko-bot
2026-10-01 19:28 ` [RFC PATCH v3 12/13] sched/fair: Allocate nohz.idle_cpus_mask during sched_init_smp() K Prateek Nayak
2026-10-02 9:13 ` sashiko-bot [this message]
2026-10-01 19:28 ` [RFC PATCH v3 13/13] sched/fair: Switch nohz.idle_cpus to use sbm K Prateek Nayak
2026-10-02 9:13 ` sashiko-bot
2026-10-03 9:10 ` [RFC PATCH v3 00/13] lib, sched: Introduce sparsebitmap (sbm) Chen Yu
2026-10-04 6:13 ` K Prateek Nayak
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