linux-kernel - [Patch v3 14/36] genirq: Introduce helper function irq_data_get_affinity

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Date:	Mon,  1 Jun 2015 16:05:23 +0800
From:	Jiang Liu <jiang.liu@...ux.intel.com>
To:	Thomas Gleixner <tglx@...utronix.de>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Randy Dunlap <rdunlap@...radead.org>,
	Yinghai Lu <yinghai@...nel.org>,
	Borislav Petkov <bp@...en8.de>,
	Jiang Liu <jiang.liu@...ux.intel.com>,
	Jason Cooper <jason@...edaemon.net>,
	Kevin Cernekee <cernekee@...il.com>,
	Arnd Bergmann <arnd@...db.de>
Cc:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Tony Luck <tony.luck@...el.com>, x86@...nel.org,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
	linux-acpi@...r.kernel.org
Subject: [Patch v3 14/36] genirq: Introduce helper function irq_data_get_affinity_mask()

Introduce helper function irq_data_get_affinity_mask() and
irq_get_affinity_mask() to hide implementation details,
so we could move field 'affinity' from struct irq_data into
struct irq_common_data later.

Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
Acked-by: Russell King <rmk+kernel@....linux.org.uk>
---
 include/linux/irq.h |   12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 68874efe19d3..91fbf10bdae0 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -656,6 +656,18 @@ static inline int irq_data_get_node(struct irq_data *d)
 	return irq_common_data_get_node(d->common);
 }
 
+static inline struct cpumask *irq_get_affinity_mask(int irq)
+{
+	struct irq_data *d = irq_get_irq_data(irq);
+
+	return d ? d->affinity : NULL;
+}
+
+static inline struct cpumask *irq_data_get_affinity_mask(struct irq_data *d)
+{
+	return d->affinity;
+}
+
 unsigned int arch_dynirq_lower_bound(unsigned int from);
 
 int __irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node,
-- 
1.7.10.4

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