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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Quchaosheng <quchaosheng000406@163.com>
Cc: Ingo Molnar <mingo@redhat.com>, Peter Zijlstra <peterz@infradead.org>,
	John Stultz <jstultz@google.com>,
	Valentin Schneider <vschneid@redhat.com>,
	Waiman Long <longman@redhat.com>,
	Boqun Feng <boqun.kernel@gmail.com>, Will Deacon <will@kernel.org>,
	Thomas Gleixner <tglx@kernel.org>,
	Juri Lelli <juri.lelli@redhat.com>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	K Prateek Nayak <kprateek.nayak@amd.com>,
	linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org
Subject: Re: [PATCH] sched/proxy: allow SCHED_PROXY_EXEC with PREEMPT_RT
Message-ID: <20260921100921.PsZhWgmh@linutronix.de>
References: <20260921081525.2982361-1-quchaosheng000406@163.com>
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In-Reply-To: <20260921081525.2982361-1-quchaosheng000406@163.com>

On 2026-09-21 16:15:25 [+0800], Quchaosheng wrote:
> Note that this makes the combination build and boot; it does not make
> proxy execution actually do anything useful on PREEMPT_RT. An rt_mutex
> already provides priority inheritance, so there is no blocked_on chain to
> follow and proxy execution stays inactive. Replacing rt_mutexes in the RT
> mutex implementation is tracked as future work in the proxy execution
> series.

Why exactly is this a good thing to do?

> Signed-off-by: Quchaosheng <quchaosheng000406@163.com>

Sebastian