linux-kernel - [RFC PATCH 1/8] ARM: gic: Support forcing cpumask for possible cpus in the system

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Message-Id: <1340019011-18642-2-git-send-email-monstr@monstr.eu>
Date:	Mon, 18 Jun 2012 13:30:04 +0200
From:	Michal Simek <monstr@...str.eu>
To:	linux-kernel@...r.kernel.org
Cc:	Russell King <linux@....linux.org.uk>,
	Marc Zyngier <marc.zyngier@....com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Will Deacon <will.deacon@....com>,
	Rob Herring <rob.herring@...xeda.com>,
	Nicolas Pitre <nicolas.pitre@...aro.org>,
	linux-arm-kernel@...ts.infradead.org,
	Ohad Ben-Cohen <ohad@...ery.com>,
	Peter Crosthwaite <peter.crosthwaite@...alogix.com>,
	Michal Simek <monstr@...str.eu>
Subject: [RFC PATCH 1/8] ARM: gic: Support forcing cpumask for possible cpus in the system

gic_set_affinity doesn't support force option. Force option
should work with all possible cpus in the system not only with
online cpus.

Signed-off-by: Michal Simek <monstr@...str.eu>
---
 arch/arm/common/gic.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/arch/arm/common/gic.c b/arch/arm/common/gic.c
index aa52699..4003cc2 100644
--- a/arch/arm/common/gic.c
+++ b/arch/arm/common/gic.c
@@ -235,9 +235,14 @@ static int gic_set_affinity(struct irq_data *d, const struct cpumask *mask_val,
 {
 	void __iomem *reg = gic_dist_base(d) + GIC_DIST_TARGET + (gic_irq(d) & ~3);
 	unsigned int shift = (gic_irq(d) % 4) * 8;
-	unsigned int cpu = cpumask_any_and(mask_val, cpu_online_mask);
+	unsigned int cpu;
 	u32 val, mask, bit;
 
+	if (force)
+		cpu = cpumask_any_and(mask_val, cpu_possible_mask);
+	else
+		cpu = cpumask_any_and(mask_val, cpu_online_mask);
+
 	if (cpu >= 8 || cpu >= nr_cpu_ids)
 		return -EINVAL;
 
-- 
1.7.0.4

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