linux-kernel - [PATCH] x86/xen: use schedule_timeout

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Date:	Fri, 29 May 2015 15:49:47 +0200
From:	Nicholas Mc Guire <hofrat@...dl.org>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc:	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	David Vrabel <david.vrabel@...rix.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org,
	Nicholas Mc Guire <hofrat@...dl.org>
Subject: [PATCH] x86/xen: use schedule_timeout_interruptible()

API consolidation with coccinelle found:
./arch/x86/xen/smp.c:499:2-18: 
        consolidation with schedule_timeout_*() recommended

This is a 1:1 conversion of the current calls to an available helper
only - so only an API consolidation to improve readability.

Patch was compile tested with x86_64_defconfig +
CONFIG_HYPERVISOR_GUEST=y,CONFIG_PARAVIRT=y,CONFIG_XEN=y:

Patch is against 4.1-rc5 (localversion-next is -next-20150529)

Signed-off-by: Nicholas Mc Guire <hofrat@...dl.org>
---
 arch/x86/xen/smp.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index 8648438..6cbbfc8 100644
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -494,10 +494,8 @@ static int xen_cpu_disable(void)
 
 static void xen_cpu_die(unsigned int cpu)
 {
-	while (xen_pv_domain() && HYPERVISOR_vcpu_op(VCPUOP_is_up, cpu, NULL)) {
-		__set_current_state(TASK_UNINTERRUPTIBLE);
-		schedule_timeout(HZ/10);
-	}
+	while (xen_pv_domain() && HYPERVISOR_vcpu_op(VCPUOP_is_up, cpu, NULL))
+		schedule_timeout_uninterruptible(msecs_to_jiffies(100));
 
 	if (common_cpu_die(cpu) == 0) {
 		xen_smp_intr_free(cpu);
-- 
1.7.10.4

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