linux-kernel - Re: [patch 02/20] posix-timers: Ensure timer ID search-loop limit is valid

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Message-ID: <87sfc51zis.ffs@tglx>
Date:   Tue, 09 May 2023 14:04:59 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Frederic Weisbecker <frederic@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Anna-Maria Behnsen <anna-maria@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        syzbot+5c54bd3eb218bb595aa9@...kaller.appspotmail.com,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Sebastian Siewior <bigeasy@...utronix.de>,
        Michael Kerrisk <mtk.manpages@...il.com>
Subject: Re: [patch 02/20] posix-timers: Ensure timer ID search-loop limit
 is valid

On Tue, May 09 2023 at 11:42, Frederic Weisbecker wrote:
> On Sat, May 06, 2023 at 01:36:22AM +0200, Thomas Gleixner wrote:
>> That would avoid the hash table lookups and the related issues, but OTH
>> it would require to allocate one extra page per TGID if the application
>> uses a single posix timer.
>> 
>> Not sure whether that's worth it though.
>
> Not sure either...

See my other reply on that...