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Date: Thu, 14 Aug 2025 16:37:17 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Zihuan Zhang <zhangzihuan@kylinos.cn>
Cc: "Rafael J . Wysocki" <rafael@kernel.org>,
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Subject: Re: [RFC PATCH v1 0/9] freezer: Introduce freeze priority model to
 address process dependency issues
Message-ID: <20250814143717.GY4067720@noisy.programming.kicks-ass.net>
References: <20250807121418.139765-1-zhangzihuan@kylinos.cn>
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In-Reply-To: <20250807121418.139765-1-zhangzihuan@kylinos.cn>

On Thu, Aug 07, 2025 at 08:14:09PM +0800, Zihuan Zhang wrote:

> Freeze Window Begins
> 
>     [process A] - epoll_wait()
>         │
>         ▼
>     [process B] - event source (already frozen)
> 

Can we make epoll_wait() TASK_FREEZABLE? AFAICT it doesn't hold any
resources, it just sits there waiting for stuff.