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From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: LAK <linux-arm-kernel@lists.infradead.org>,
	Ingo Molnar <mingo@elte.hu>, John Stultz <john.stultz@linaro.org>
Subject: [patch 6/7] x86: Convert PIT to clockevents_config_and_register()
Date: Wed, 18 May 2011 21:33:42 -0000	[thread overview]
Message-ID: <20110518210136.545615675@linutronix.de> (raw)
In-Reply-To: <20110518205713.947614271@linutronix.de>

[-- Attachment #1: x86-pit-convert-ce.patch --]
[-- Type: text/plain, Size: 1089 bytes --]

Let the core do the work.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 arch/x86/kernel/i8253.c |    6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

Index: linux-2.6-tip/arch/x86/kernel/i8253.c
===================================================================
--- linux-2.6-tip.orig/arch/x86/kernel/i8253.c
+++ linux-2.6-tip/arch/x86/kernel/i8253.c
@@ -93,7 +93,6 @@ static struct clock_event_device pit_ce 
 	.features	= CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
 	.set_mode	= init_pit_timer,
 	.set_next_event = pit_next_event,
-	.shift		= 32,
 	.irq		= 0,
 };
 
@@ -108,11 +107,8 @@ void __init setup_pit_timer(void)
 	 * IO_APIC has been initialized.
 	 */
 	pit_ce.cpumask = cpumask_of(smp_processor_id());
-	pit_ce.mult = div_sc(CLOCK_TICK_RATE, NSEC_PER_SEC, pit_ce.shift);
-	pit_ce.max_delta_ns = clockevent_delta2ns(0x7FFF, &pit_ce);
-	pit_ce.min_delta_ns = clockevent_delta2ns(0xF, &pit_ce);
 
-	clockevents_register_device(&pit_ce);
+	clockevents_config_and_register(&pit_ce, CLOCK_TICK_RATE, 0xF, 0x7FFF);
 	global_clock_event = &pit_ce;
 }
 



  parent reply	other threads:[~2011-05-18 21:33 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-18 21:33 [patch 0/7] clocksources/clockevents improvements Thomas Gleixner
2011-05-18 21:33 ` [patch 2/7] clocksource: Get rid of the hardcoded 5 seconds sleep time limit Thomas Gleixner
2011-05-19  0:57   ` John Stultz
2011-05-19  8:43     ` Thomas Gleixner
2011-05-20  1:10     ` john stultz
2011-05-18 21:33 ` [patch 1/7] clocksource: Restructure clocksource struct members Thomas Gleixner
2011-05-18 21:33 ` [patch 3/7] clockevents: Restructure clock_event_device members Thomas Gleixner
2011-05-18 21:33 ` [patch 4/7] clockevents: Provide combined configure and register function Thomas Gleixner
2011-05-19  9:08   ` Ingo Molnar
2011-05-19 10:00     ` Thomas Gleixner
2011-05-19 18:10       ` Ingo Molnar
2011-05-18 21:33 ` [patch 5/7] clockevents: Provide interface to reconfigure an active clock event device Thomas Gleixner
2011-05-19  7:26   ` Linus Walleij
2011-05-19  9:10   ` Ingo Molnar
2011-05-19  9:33     ` Thomas Gleixner
2011-05-19  9:37       ` Ingo Molnar
2011-05-18 21:33 ` Thomas Gleixner [this message]
2011-05-18 21:33 ` [patch 7/7] x86: hpet: Cleanup the clockevents init and register code Thomas Gleixner
2011-05-19  9:33   ` Ingo Molnar
2011-05-19  9:34 ` [patch 0/7] clocksources/clockevents improvements Ingo Molnar

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