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From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
To: Nicolai Stange <nicstange@gmail.com>,
	Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <john.stultz@linaro.org>,
	linux-kernel@vger.kernel.org, Juergen Gross <jgross@suse.com>,
	Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
	x86@kernel.org, xen-devel@lists.xenproject.org
Subject: Re: [PATCH] x86/xen/time: set ->min_delta_ticks and ->max_delta_ticks
Date: Thu, 30 Mar 2017 18:59:47 -0400	[thread overview]
Message-ID: <f8eb71b7-6efe-6f11-12f7-6e253114d996@oracle.com> (raw)
In-Reply-To: <20170330200642.8228-1-nicstange@gmail.com>

On 03/30/2017 04:06 PM, Nicolai Stange wrote:
> In preparation for making the clockevents core NTP correction aware,
> all clockevent device drivers must set ->min_delta_ticks and
> ->max_delta_ticks rather than ->min_delta_ns and ->max_delta_ns: a
> clockevent device's rate is going to change dynamically and thus, the
> ratio of ns to ticks ceases to stay invariant.
>
> Make the x86 arch's xen clockevent driver initialize these fields properly.
>
> This patch alone doesn't introduce any change in functionality as the
> clockevents core still looks exclusively at the (untouched) ->min_delta_ns
> and ->max_delta_ns. As soon as this has changed, a followup patch will
> purge the initialization of ->min_delta_ns and ->max_delta_ns from this
> driver.
>
> Signed-off-by: Nicolai Stange <nicstange@gmail.com>

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>

  reply	other threads:[~2017-03-30 23:00 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-26 13:44 [PATCH] x86/apic/timer: set ->min_delta_ticks and ->max_delta_ticks Nicolai Stange
2017-03-30 19:39 ` [PATCH] avr32/time: " Nicolai Stange
2017-04-03  6:42   ` Hans-Christian Noren Egtvedt
2017-03-30 19:41 ` [PATCH] blackfin: time-ts: " Nicolai Stange
2017-03-30 19:42 ` [PATCH] c6x/timer64: " Nicolai Stange
2017-03-30 19:43 ` [PATCH] hexagon/time: " Nicolai Stange
2017-04-03 15:49   ` Richard Kuo
2017-03-30 19:44 ` [PATCH] m68k/coldfire/pit: " Nicolai Stange
2017-03-31  1:10   ` Greg Ungerer
2017-03-30 19:45 ` [PATCH] microblaze/timer: " Nicolai Stange
2017-04-07 13:14   ` Daniel Lezcano
2017-04-16  2:47     ` Nicolai Stange
2017-04-16  9:46       ` Daniel Lezcano
2017-05-29  9:03   ` Michal Simek
2017-03-30 19:47 ` [PATCH] MIPS: clockevent drivers: " Nicolai Stange
2017-04-12 20:10   ` Ralf Baechle
2017-03-30 19:48 ` [PATCH] mn10300/cevt-mn10300: " Nicolai Stange
2017-03-30 19:53 ` [PATCH] powerpc/time: " Nicolai Stange
2017-03-31  3:03   ` Michael Ellerman
2017-03-30 19:54 ` [PATCH] s390/time: " Nicolai Stange
2017-03-30 19:55 ` [PATCH] score/time: " Nicolai Stange
2017-03-30 19:56 ` [PATCH] sparc/time: " Nicolai Stange
2017-04-01 19:18   ` David Miller
2017-03-30 19:57 ` [PATCH] tile/time: " Nicolai Stange
2017-03-30 19:59 ` [PATCH] um/time: " Nicolai Stange
2017-03-30 20:01 ` [PATCH] unicore32/time: " Nicolai Stange
2017-03-31  1:59   ` Xuetao Guan
2017-03-30 20:03 ` [PATCH] x86/lguest/timer: " Nicolai Stange
2017-04-02  1:35   ` Rusty Russell
2017-03-30 20:04 ` [PATCH] x86/uv/time: " Nicolai Stange
2017-03-30 20:06 ` [PATCH] x86/xen/time: " Nicolai Stange
2017-03-30 22:59   ` Boris Ostrovsky [this message]
2017-04-06  9:11   ` Juergen Gross
2017-04-11  5:09   ` Juergen Gross
2017-03-30 20:07 ` [PATCH] clockevents/drivers/dw_apb: " Nicolai Stange
2017-04-07 13:20   ` Daniel Lezcano
2017-03-30 20:08 ` [PATCH] clockevents/drivers/metag: " Nicolai Stange
2017-04-07 13:20   ` Daniel Lezcano
2017-03-30 20:08 ` [PATCH] x86/numachip timer: " Nicolai Stange
2017-04-07 13:21   ` Daniel Lezcano
2017-03-30 20:09 ` [PATCH] clockevents/drivers/sh_cmt: " Nicolai Stange
2017-04-07 13:22   ` Daniel Lezcano
2017-03-30 20:10 ` [PATCH] clockevents/drivers/atlas7: " Nicolai Stange
2017-04-07 13:23   ` Daniel Lezcano

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