linux-kernel - [PATCH v3 0/7] locking/rtmutex: Avoid PI state recursion through sched_submit

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Message-Id: <20230908162254.999499-1-bigeasy@linutronix.de>
Date:   Fri,  8 Sep 2023 18:22:47 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     Peter Zijlstra <peterz@...radead.org>, linux-kernel@...r.kernel.org
Cc:     bigeasy@...utronix.de, tglx@...utronix.de, boqun.feng@...il.com,
        bristot@...hat.com, bsegall@...gle.com, dietmar.eggemann@....com,
        jstultz@...gle.com, juri.lelli@...hat.com, longman@...hat.com,
        mgorman@...e.de, mingo@...hat.com, rostedt@...dmis.org,
        swood@...hat.com, vincent.guittot@...aro.org, vschneid@...hat.com,
        will@...nel.org
Subject: [PATCH v3 0/7] locking/rtmutex: Avoid PI state recursion through sched_submit_work()

Hi!

this is the third iteration of the patch series that PeterZ sent.

PeterZ v1: https://lore.kernel.org/all/20230815110121.117752409@infradead.org/
My v2: https://lore.kernel.org/all/20230825181033.504534-1-bigeasy@linutronix.de/
It contains a range-diff what changed, in brief:
- + include linux/sched/rt.h to get compiled
- rt_mutex_pre_schedule()/post() for rwbase_write_lock().

Now the v3:
- Sultan Alsawaf reported a deadlock in write_lock(). A brown paper back
  later, I replaced rt_mutex_pre_schedule()/post() with
  rwbase_pre_schedule() in rwbase_write_lock().

- The reported futex splat in v2 has been addressed with a trylock. This
  is 7/7.

Sebastian