From: Peter Zijlstra <peterz@infradead.org>
To: elver@google.com
Cc: linux-kernel@vger.kernel.org, bigeasy@linutronix.de,
mingo@kernel.org, tglx@linutronix.de, will@kernel.org,
boqun.feng@gmail.com, longman@redhat.com, hch@lst.de,
rostedt@goodmis.org, bvanassche@acm.org, llvm@lists.linux.dev
Subject: Re: [RFC][PATCH 4/4] futex: Convert to compiler context analysis
Date: Wed, 21 Jan 2026 14:19:16 +0100 [thread overview]
Message-ID: <20260121131916.GA171111@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <20260121111213.950376128@infradead.org>
On Wed, Jan 21, 2026 at 12:07:08PM +0100, Peter Zijlstra wrote:
> +extern void futex_q_lock(struct futex_q *q, struct futex_hash_bucket *hb)
> + __acquires(&hb->lock)
> + __acquires(q->lock_ptr);
FWIW, this 'weirdness' is because the thing cannot tell they are the
same lock and we use both forms. It's a bit tedious but that's what it
is.
next prev parent reply other threads:[~2026-01-21 13:19 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-21 11:07 [RFC][PATCH 0/4] locking: Add/convert context analysis bits Peter Zijlstra
2026-01-21 11:07 ` [RFC][PATCH 1/4] compiler-context-analysys: Add __cond_releases() Peter Zijlstra
2026-01-21 13:09 ` Marco Elver
2026-01-21 17:55 ` Bart Van Assche
2026-01-21 18:35 ` Marco Elver
2026-01-21 19:02 ` Peter Zijlstra
2026-01-21 21:02 ` Bart Van Assche
2026-03-09 19:48 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2026-01-21 11:07 ` [RFC][PATCH 2/4] locking/mutex: Add context analysis Peter Zijlstra
2026-01-21 17:11 ` Bart Van Assche
2026-01-21 18:59 ` Peter Zijlstra
2026-03-09 19:48 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2026-01-21 11:07 ` [RFC][PATCH 3/4] locking/rtmutex: " Peter Zijlstra
2026-01-21 17:15 ` Bart Van Assche
2026-01-21 19:01 ` Peter Zijlstra
2026-03-09 19:48 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2026-01-21 11:07 ` [RFC][PATCH 4/4] futex: Convert to compiler " Peter Zijlstra
2026-01-21 13:19 ` Peter Zijlstra [this message]
2026-03-18 8:02 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2026-01-21 13:07 ` [RFC][PATCH 0/4] locking: Add/convert context analysis bits Marco Elver
2026-01-21 19:23 ` Peter Zijlstra
2026-01-21 20:37 ` Bart Van Assche
2026-01-22 9:04 ` Peter Zijlstra
2026-01-22 16:28 ` Bart Van Assche
2026-01-22 18:58 ` Nathan Chancellor
2026-01-23 11:06 ` Peter Zijlstra
2026-01-23 11:15 ` Peter Zijlstra
2026-01-23 18:58 ` Bart Van Assche
2026-01-23 20:15 ` Marco Elver
2026-01-23 14:16 ` Sebastian Andrzej Siewior
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