From: Peter Zijlstra <peterz@infradead.org>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: LKML <linux-kernel@vger.kernel.org>,
Anna-Maria Behnsen <anna-maria@linutronix.de>,
Frederic Weisbecker <frederic@kernel.org>,
Benjamin Segall <bsegall@google.com>,
Eric Dumazet <edumazet@google.com>,
Andrey Vagin <avagin@openvz.org>,
Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
Subject: Re: [patch 06/11] posix-timers: Make signal_struct::next_posix_timer_id an atomic_t
Date: Mon, 24 Feb 2025 14:20:47 +0100 [thread overview]
Message-ID: <20250224132047.GA34233@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <20250224101343.344168498@linutronix.de>
On Mon, Feb 24, 2025 at 11:15:32AM +0100, Thomas Gleixner wrote:
> + unsigned int id = (atomic_inc_return(&sig->next_posix_timer_id) - 1) & INT_MAX;
How about:
unsigned int id = atomic_fetch_inc(&sig->next_posix_timer_id) & INT_MAX;
next prev parent reply other threads:[~2025-02-24 13:20 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-24 10:15 [patch 00/11] posix-timers: Rework the global hash table and provide a sane mechanism for CRIU Thomas Gleixner
2025-02-24 10:15 ` [patch 01/11] posix-timers: Initialise timer before adding it to the hash table Thomas Gleixner
2025-02-24 10:15 ` [patch 02/11] posix-timers: Add cond_resched() to posix_timer_add() search loop Thomas Gleixner
2025-02-24 10:15 ` [patch 03/11] posix-timers: Cleanup includes Thomas Gleixner
2025-02-24 10:15 ` [patch 04/11] posix-timers: Remove pointless unlock_timer() wrapper Thomas Gleixner
2025-02-24 16:21 ` Peter Zijlstra
2025-02-24 18:43 ` Thomas Gleixner
2025-02-24 21:55 ` Peter Zijlstra
2025-02-24 10:15 ` [patch 05/11] posix-timers: Rework timer removal Thomas Gleixner
2025-02-24 10:15 ` [patch 06/11] posix-timers: Make signal_struct::next_posix_timer_id an atomic_t Thomas Gleixner
2025-02-24 13:20 ` Peter Zijlstra [this message]
2025-02-24 13:34 ` Eric Dumazet
2025-02-24 19:38 ` Thomas Gleixner
2025-02-24 10:15 ` [patch 07/11] posix-timers: Improve hash table performance Thomas Gleixner
2025-02-24 19:45 ` Thomas Gleixner
2025-02-24 10:15 ` [patch 08/11] posix-timers: Make per process list RCU safe Thomas Gleixner
2025-02-24 10:15 ` [patch 09/11] posix-timers: Dont iterate /proc/$PID/timers with sighand::siglock held Thomas Gleixner
2025-02-24 10:15 ` [patch 10/11] posix-timers: Provide a mechanism to allocate a given timer ID Thomas Gleixner
2025-02-24 10:15 ` [patch 11/11] selftests/timers/posix-timers: Add a test for exact allocation mode Thomas Gleixner
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