linux-kernel - [PATCH] fix dynticks for voyager

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Date:	Mon, 30 Apr 2007 11:38:51 -0500
From:	James Bottomley <James.Bottomley@...senPartnership.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: [PATCH] fix dynticks for voyager

As usual voyager tripped over an explicit boot CPU is zero assumption in
the dynticks code.  This is the fix I have queued in the voyager tree.

James

---

>>From 5d3e489cf8fcf12eff92476098b9bfa0120ee3c7 Mon Sep 17 00:00:00 2001
From: James Bottomley <James.Bottomley@...senPartnership.com>
Date: Mon, 30 Apr 2007 11:27:25 -0500
Subject: [VOYAGER] clockevents: correct boot cpu is zero assumption

This isn't true for voyager, so alter setup_pit_timer() to initialise
the cpumask from the current processor id (which should be the boot
processor) rather than defaulting to zero.

Signed-off-by: James Bottomley <James.Bottomley@...senPartnership.com>
---
 arch/i386/kernel/i8253.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/i386/kernel/i8253.c b/arch/i386/kernel/i8253.c
index 10cef5c..f8a3c40 100644
--- a/arch/i386/kernel/i8253.c
+++ b/arch/i386/kernel/i8253.c
@@ -110,7 +110,7 @@ void __init setup_pit_timer(void)
 	 * Start pit with the boot cpu mask and make it global after the
 	 * IO_APIC has been initialized.
 	 */
-	pit_clockevent.cpumask = cpumask_of_cpu(0);
+	pit_clockevent.cpumask = cpumask_of_cpu(smp_processor_id());
 	pit_clockevent.mult = div_sc(CLOCK_TICK_RATE, NSEC_PER_SEC, 32);
 	pit_clockevent.max_delta_ns =
 		clockevent_delta2ns(0x7FFF, &pit_clockevent);
-- 
1.4.4.4



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