From: Tim Chen <tim.c.chen@linux.intel.com>
To: Lu Wang <wanglu.priv@gmail.com>, yu.c.chen@intel.com
Cc: peterz@infradead.org, mingo@redhat.com, juri.lelli@redhat.com,
vincent.guittot@linaro.org, dietmar.eggemann@arm.com,
rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de,
vschneid@redhat.com, kprateek.nayak@amd.com,
linux-kernel@vger.kernel.org, chen.yu@linux.dev
Subject: Re: [PATCH v2] sched/cache: honor migrate_llc_task semantics in active load balance
Date: Mon, 10 Aug 2026 13:56:07 -0700 [thread overview]
Message-ID: <e4243fa32947eb3af2daac51d96cf47b0f49a51c.camel@linux.intel.com> (raw)
In-Reply-To: <20260809105343.1189051-1-wanglu.priv@gmail.com>
On Sun, 2026-08-09 at 18:53 +0800, Lu Wang wrote:
> A passive load-balance pass marks group_llc_balance as migrate_llc_task
> and queues active balance when it cannot move a task. The CPU stopper
> callback constructs a fresh lb_env, so select the stopper callback when
> queueing active balance to preserve the migration semantics across the
> asynchronous boundary.
>
> For CAS-directed active balance, reject a candidate whose preferred LLC
> does not match the destination LLC. This keeps the fallback from moving
> a task away from its preferred LLC.
Thanks. This version looks good to me.
Reviewed-by: Tim Chen <tim.c.chen@linux.intel.com>
Tim
>
> Fixes: e4c9a4cb244a (\"sched/cache: Add migrate_llc_task migration type for cache-aware balancing\")
> Suggested-by: \"Chen, Yu C\" <yu.c.chen@intel.com>
> Signed-off-by: Lu Wang <wanglu.priv@gmail.com>
> ---
next prev parent reply other threads:[~2026-08-10 20:56 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-01 12:22 [PATCH] sched/cache: honor migrate_llc_task semantics in active load balance Lu Wang
2026-08-03 4:20 ` Chen, Yu C
2026-08-03 10:02 ` Lu Wang
2026-08-04 0:10 ` Tim Chen
2026-08-04 8:17 ` Chen, Yu C
2026-08-04 15:07 ` Lu Wang
2026-08-04 19:42 ` Tim Chen
2026-08-05 2:38 ` wanglu15
2026-08-05 16:04 ` Tim Chen
2026-08-05 16:43 ` Chen, Yu C
2026-08-06 16:21 ` Tim Chen
2026-08-04 8:30 ` Lu Wang
2026-08-06 15:35 ` Chen, Yu C
2026-08-06 17:22 ` Tim Chen
2026-08-07 6:48 ` Chen, Yu C
2026-08-07 9:58 ` Lu Wang
2026-08-09 10:53 ` [PATCH v2] " Lu Wang
2026-08-10 20:56 ` Tim Chen [this message]
2026-08-11 10:23 ` Chen, Yu C
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