From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Stephen Warren <swarren@wwwdotorg.org>
Cc: Russell King <linux@arm.linux.org.uk>,
Olof Johansson <olof@lixom.net>, Arnd Bergmann <arnd@arndb.de>,
John Stultz <johnstul@us.ibm.com>,
Thomas Gleixner <tglx@linutronix.de>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
Stephen Warren <swarren@nvidia.com>,
Mike Frysinger <vapier@gentoo.org>,
Mikael Starvik <starvik@axis.com>,
Jesper Nilsson <jesper.nilsson@axis.com>,
Hirokazu Takata <takata@linux-m32r.org>
Subject: Re: [PATCH 02/11] time: convert arch_gettimeoffset to a pointer
Date: Sun, 11 Nov 2012 10:45:51 +0100 [thread overview]
Message-ID: <CAMuHMdWCFDk_DTs3T-h_8NvmsaQ1bbPyj1vJyN_y=fCeMT06sw@mail.gmail.com> (raw)
In-Reply-To: <1352408516-21988-4-git-send-email-swarren@wwwdotorg.org>
On Thu, Nov 8, 2012 at 10:01 PM, Stephen Warren <swarren@wwwdotorg.org> wrote:
> From: Stephen Warren <swarren@nvidia.com>
>
> Currently, whenever CONFIG_ARCH_USES_GETTIMEOFFSET is enabled, each
> arch core provides a single implementation of arch_gettimeoffset(). In
> many cases, different sub-architectures, different machines, or
> different timer providers exist, and so the arch ends up implementing
> arch_gettimeoffset() as a call-through-pointer anyway. Examples are
> ARM, Cris, M68K, and it's arguable that the remaining architectures,
> M32R and Blackfin, should be doing this anyway.
>
> Modify arch_gettimeoffset so that it itself is a function pointer, which
> the arch initializes. This will allow later changes to move the
> initialization of this function into individual machine support or timer
> drivers. This is particularly useful for code in drivers/clocksource
> which should rely on an arch-independant mechanism to register their
> implementation of arch_gettimeoffset().
>
> This patch also converts the Cris architecture to set arch_gettimeoffset
> directly to the final implementation in time_init(), because Cris already
> had separate time_init() functions per sub-architecture. M68K and ARM
> are converted to set arch_gettimeoffset the final implementation in later
> patches, because they already have function pointers in place for this
> purpose.
>
> Cc: Russell King <linux@arm.linux.org.uk>
> Cc: Mike Frysinger <vapier@gentoo.org>
> Cc: Mikael Starvik <starvik@axis.com>
> Cc: Jesper Nilsson <jesper.nilsson@axis.com>
> Cc: Hirokazu Takata <takata@linux-m32r.org>
> Cc: Geert Uytterhoeven <geert@linux-m68k.org>
The m68k changes look ok, so
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
> Cc: John Stultz <johnstul@us.ibm.com>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Signed-off-by: Stephen Warren <swarren@nvidia.com>
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
next prev parent reply other threads:[~2012-11-11 9:45 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-08 21:01 [RFC PATCH 00/11] arch_gettimeoffset and ARM timer rework Stephen Warren
2012-11-08 21:01 ` Stephen Warren
2012-11-08 21:01 ` [PATCH] ARM: delete struct sys_timer Stephen Warren
2012-11-08 21:01 ` Stephen Warren
2012-11-08 21:04 ` Stephen Warren
2012-11-08 21:04 ` Stephen Warren
2012-11-08 21:01 ` [PATCH 01/11] cris: move usec/nsec conversion to do_slow_gettimeoffset Stephen Warren
2012-11-08 21:01 ` Stephen Warren
2012-11-12 10:44 ` Jesper Nilsson
2012-11-12 10:44 ` Jesper Nilsson
2012-11-08 21:01 ` [PATCH 02/11] time: convert arch_gettimeoffset to a pointer Stephen Warren
2012-11-08 21:01 ` Stephen Warren
2012-11-09 23:02 ` John Stultz
2012-11-09 23:02 ` John Stultz
2012-11-11 9:45 ` Geert Uytterhoeven [this message]
2012-11-12 10:46 ` Jesper Nilsson
2012-11-12 10:46 ` Jesper Nilsson
2012-11-08 21:01 ` [PATCH 03/11] m68k: set arch_gettimeoffset directly Stephen Warren
2012-11-08 21:01 ` Stephen Warren
2012-11-11 9:50 ` Geert Uytterhoeven
2012-11-11 9:50 ` Geert Uytterhoeven
2012-11-11 11:47 ` Phil Blundell
2012-11-11 11:47 ` Phil Blundell
2012-11-08 21:01 ` [PATCH 04/11] ARM: " Stephen Warren
2012-11-08 21:01 ` Stephen Warren
2012-11-08 23:06 ` Ryan Mallon
2012-11-09 21:07 ` Stephen Warren
2012-11-10 3:39 ` Ryan Mallon
2012-11-08 21:01 ` [PATCH 05/11] ARM: at91: convert timer suspend/resume to clock_event_device Stephen Warren
2012-11-08 21:01 ` Stephen Warren
2012-11-12 14:49 ` Jean-Christophe PLAGNIOL-VILLARD
2012-11-12 14:49 ` Jean-Christophe PLAGNIOL-VILLARD
2012-11-08 21:01 ` [PATCH 06/11] ARM: pxa: " Stephen Warren
2012-11-08 21:01 ` Stephen Warren
2012-11-09 2:05 ` Eric Miao
2012-11-08 21:01 ` [PATCH 07/11] ARM: sa1100: " Stephen Warren
2012-11-08 21:01 ` Stephen Warren
2012-11-08 21:01 ` [PATCH 08/11] ARM: ux500: " Stephen Warren
2012-11-08 21:01 ` Stephen Warren
2012-11-08 21:01 ` [PATCH 09/11] ARM: samsung: register syscore_ops for timer resume directly Stephen Warren
2012-11-08 21:01 ` [PATCH 10/11] ARM: remove struct sys_timer suspend and resume fields Stephen Warren
2012-11-08 21:01 ` [RFC PATCH 11/11] ARM: delete struct sys_timer Stephen Warren
2012-11-09 20:55 ` [PATCH V2 " Stephen Warren
2012-11-12 14:17 ` [RFC PATCH 00/11] arch_gettimeoffset and ARM timer rework Arnd Bergmann
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