Attachment 291066 Details for Bug 427998 – xen-unstable.hg 10532:4b45f7f62dc7 backported to 2.6.9-67.EL

[patch] xen-unstable.hg 10532:4b45f7f62dc7 backported to 2.6.9-67.EL

xen-unstable-10532-4b45f7f62dc7 (text/plain), 1.36 KB, created by Ian Campbell on 2008-01-08 16:23:15 UTC

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Creator: Ian Campbell

Created: 2008-01-08 16:23:15 UTC

Size: 1.36 KB

patch

obsolete

># HG changeset patch
># User ack@localhost.localdomain
># Node ID 4b45f7f62dc77b7d4d4494fec10fed36070f5ae3
># Parent  bd408087629788124c70bfcfadfdab246dd71a53
>Fix next_timer_interrupt() in patch and update caller
>to deal with the case of existing pending timers.
>Fixes a dom0 hang at boot time on some HPs where some
>dubious USB code is invoked from pci_init() that
>potentially calls msleep(10) a few times.
>Signed-off-by: Emmanuel Ackaouy <ack@xensource.com>
>xen-unstable changeset: 10532:4b45f7f62dc77b7d4d4494fec10fed36070f5ae3
>xen-unstable date: Wed Jun 28 21:51:01 2006 +0100
>
>Index: linux-2.6.9-67.0.1.EL/arch/i386/kernel/time-xen.c
>===================================================================
>--- linux-2.6.9-67.0.1.EL.orig/arch/i386/kernel/time-xen.c	2008-01-02 15:59:12.000000000 +0000
>+++ linux-2.6.9-67.0.1.EL/arch/i386/kernel/time-xen.c	2008-01-02 16:00:07.000000000 +0000
>@@ -871,12 +871,11 @@
> 
> 	smp_mb();
> 
>-	/* Leave ourselves in tick mode if rcu or softirq pending. */
>-	if (rcu_needs_cpu(cpu) || local_softirq_pending()) {
>+	/* Leave ourselves in tick mode if rcu or softirq or timer pending. */
>+	if (rcu_needs_cpu(cpu) || local_softirq_pending() ||
>+	    (j = next_timer_interrupt(), time_before_eq(j, jiffies))) {
> 		cpu_clear(cpu, nohz_cpu_mask);
> 		j = jiffies + 1;
>-	} else {
>-		j = next_timer_interrupt();
> 	}
> 
> 	if (HYPERVISOR_set_timer_op(jiffies_to_st(j)) != 0)

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Attachments on bug 427998: 291063 | 291064 | 291065 | 291066