From: Thomas Gleixner <tglx@linutronix.de>
To: Joel Fernandes <joel@joelfernandes.org>,
linux-kernel@vger.kernel.org,
Anna-Maria Behnsen <anna-maria@linutronix.de>,
Frederic Weisbecker <frederic@kernel.org>,
Ingo Molnar <mingo@kernel.org>
Subject: Re: [RFC 3/3] tick-sched: Replace jiffie readout with idle_entrytime
Date: Tue, 12 Nov 2024 15:48:43 +0100 [thread overview]
Message-ID: <87y11omrsk.ffs@tglx> (raw)
In-Reply-To: <20241110225545.GA1579217@google.com>
On Sun, Nov 10 2024 at 22:55, Joel Fernandes wrote:
>
> + /*
> + * There is some time that passes between when clocksource starts and the
> + * first time tick device is setup. Offset basejiff by that.
> + */
> + basejiff -= DIV_ROUND_DOWN_ULL(tick_first_period, TICK_NSEC);
We clearly need yet another division here. Especially as that division
results in the exactly same value every time.
next prev parent reply other threads:[~2024-11-12 14:48 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-08 17:48 [RFC 0/3] tick-sched cleanups Joel Fernandes (Google)
2024-11-08 17:48 ` [RFC 1/3] tick-sched: Remove last_tick and calculate next tick from now Joel Fernandes (Google)
2024-11-11 23:43 ` Frederic Weisbecker
2024-11-12 13:46 ` Thomas Gleixner
2024-11-12 13:56 ` Frederic Weisbecker
2024-11-12 18:20 ` Joel Fernandes
2024-11-12 18:33 ` Joel Fernandes
2024-11-13 12:40 ` Frederic Weisbecker
2024-11-13 21:40 ` Joel Fernandes
2024-11-08 17:48 ` [RFC 2/3] tick-sched: Keep tick on if hrtimer is due imminently Joel Fernandes (Google)
2024-11-11 12:37 ` Christian Loehle
2024-11-11 15:56 ` Joel Fernandes
2024-11-11 16:55 ` Christian Loehle
2024-11-11 17:17 ` Joel Fernandes
2024-11-08 17:48 ` [RFC 3/3] tick-sched: Replace jiffie readout with idle_entrytime Joel Fernandes (Google)
2024-11-10 22:55 ` Joel Fernandes
2024-11-12 14:48 ` Thomas Gleixner [this message]
2024-11-13 21:46 ` Joel Fernandes
2024-11-11 22:25 ` Frederic Weisbecker
2024-11-13 22:39 ` Joel Fernandes
2024-11-12 14:30 ` Thomas Gleixner
2024-11-13 22:18 ` Joel Fernandes
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