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From: Thomas Gleixner <tglx@linutronix.de>
To: Eric Dumazet <edumazet@google.com>,
	David Laight <david.laight.linux@gmail.com>
Cc: Anna-Maria Behnsen <anna-maria@linutronix.de>,
	Frederic Weisbecker <frederic@kernel.org>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Benjamin Segall <bsegall@google.com>,
	Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [PATCH 2/2] posix-timers: Use RCU in posix_timer_add()
Date: Mon, 17 Feb 2025 20:25:41 +0100	[thread overview]
Message-ID: <87ldu4jruy.ffs@tglx> (raw)
In-Reply-To: <CANn89iJjsCe+Yk6Kn8OUTqPEnSfbZv_gVhqByAYaY+pL2V36Qg@mail.gmail.com>

On Fri, Feb 14 2025 at 18:48, Eric Dumazet wrote:
> I just noticed the rescan is racy anyway, because when the other threads add
> a timer, the timer->it_signal and timer->it_id are temporarily zero.

Ah, you noticed too, but that has nothing to do with the rescan. That's
broken already today.

Thanks,

        tglx

  reply	other threads:[~2025-02-17 19:25 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-02-14 13:59 [PATCH 0/2] posix-timers: Reduce spinlock contention Eric Dumazet
2025-02-14 13:59 ` [PATCH 1/2] posix-timers: Make next_posix_timer_id an atomic_t Eric Dumazet
2025-02-14 13:59 ` [PATCH 2/2] posix-timers: Use RCU in posix_timer_add() Eric Dumazet
2025-02-14 16:59   ` David Laight
2025-02-14 17:48     ` Eric Dumazet
2025-02-17 19:25       ` Thomas Gleixner [this message]
2025-02-17 19:24   ` Thomas Gleixner
2025-02-18 14:16     ` Thomas Gleixner

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