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Date: Mon, 06 Jul 2026 13:40:38 -1000
Message-ID: <ad4a4c46c02a5e8e9c427a8f461988fc@kernel.org>
From: Tejun Heo <tj@kernel.org>
To: sashiko-bot@kernel.org
Cc: sched-ext@lists.linux.dev
Subject: Re: [PATCH v2 sched_ext/for-7.3 11/36] sched_ext: Add CID sharding
In-Reply-To: <20260706015326.C61741F000E9@smtp.kernel.org>
References: <20260706014058.439853-1-tj@kernel.org> <20260706014058.439853-12-tj@kernel.org> <20260706015326.C61741F000E9@smtp.kernel.org>
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On Mon, 06 Jul 2026 01:53:26 +0000, sashiko-bot wrote:
> - [Medium] When primary threads are offline, `calc_shard_layout` undercounts the number of unique cores in the LLC, leading to excessive shard fragmentation.

False positive. Offline cpus are scrubbed from their siblings'
topology_sibling_cpumask (x86 remove_siblinginfo, generic
remove_cpu_topology), and scx_cid_init() runs under cpus_read_lock, so the
primary-thread test sees a consistent online-only mask. Same idiom as
topology_is_primary_thread().