commit 449e9cae58b06be1293858ec8e5d8cb728238baa
author Jiang Liu <jiang.liu@linux.intel.com> Mon Jun 01 16:05:16 2015 +0800
committer Thomas Gleixner <tglx@linutronix.de> Wed Sep 16 15:46:49 2015 +0200
tree db2fc542aebb64f9e27b11f6d77103a9eacf8ee6
parent 4df7f54d16ebe9c37631182de84c4347f0e44db3

genirq: Move field 'node' from irq_data into irq_common_data

NUMA node information is per-irq instead of per-irqchip, so move it into
struct irq_common_data. Also use CONFIG_NUMA to guard irq_common_data.node.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Link: http://lkml.kernel.org/r/1433145945-789-8-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

include/linux/irq.h

diff --git a/include/linux/irq.h b/include/linux/irq.h
index e54ae829..ebcc5c6 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -129,9 +129,13 @@
  * struct irq_common_data - per irq data shared by all irqchips
  * @state_use_accessors: status information for irq chip functions.
  *			Use accessor functions to deal with it
+ * @node:		node index useful for balancing
  */
 struct irq_common_data {
 	unsigned int		state_use_accessors;
+#ifdef CONFIG_NUMA
+	unsigned int		node;
+#endif
 };
 
 /**
@@ -139,7 +143,6 @@
  * @mask:		precomputed bitmask for accessing the chip registers
  * @irq:		interrupt number
  * @hwirq:		hardware interrupt number, local to the interrupt domain
- * @node:		node index useful for balancing
  * @common:		point to data shared by all irqchips
  * @chip:		low level interrupt hardware access
  * @domain:		Interrupt translation domain; responsible for mapping
@@ -156,7 +159,6 @@
 	u32			mask;
 	unsigned int		irq;
 	unsigned long		hwirq;
-	unsigned int		node;
 	struct irq_common_data	*common;
 	struct irq_chip		*chip;
 	struct irq_domain	*domain;
@@ -664,9 +666,18 @@
 	return d ? irqd_get_trigger_type(d) : 0;
 }
 
+static inline int irq_common_data_get_node(struct irq_common_data *d)
+{
+#ifdef CONFIG_NUMA
+	return d->node;
+#else
+	return 0;
+#endif
+}
+
 static inline int irq_data_get_node(struct irq_data *d)
 {
-	return d->node;
+	return irq_common_data_get_node(d->common);
 }
 
 static inline struct cpumask *irq_get_affinity_mask(int irq)

kernel/irq/internals.h

diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h
index eee4b38..5ef0c2d 100644
--- a/kernel/irq/internals.h
+++ b/kernel/irq/internals.h
@@ -194,7 +194,7 @@
 
 static inline int irq_desc_get_node(struct irq_desc *desc)
 {
-	return irq_data_get_node(&desc->irq_data);
+	return irq_common_data_get_node(&desc->irq_common_data);
 }
 
 #ifdef CONFIG_PM_SLEEP

kernel/irq/irqdesc.c

diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 0a2a4b6..7f3e9fa 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -52,11 +52,13 @@
 
 static void desc_smp_init(struct irq_desc *desc, int node)
 {
-	desc->irq_data.node = node;
 	cpumask_copy(desc->irq_data.affinity, irq_default_affinity);
 #ifdef CONFIG_GENERIC_PENDING_IRQ
 	cpumask_clear(desc->pending_mask);
 #endif
+#ifdef CONFIG_NUMA
+	desc->irq_common_data.node = node;
+#endif
 }
 
 #else

kernel/irq/irqdomain.c

diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 79baaf8..dc9d27c 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -844,7 +844,6 @@
 		child->parent_data = irq_data;
 		irq_data->irq = child->irq;
 		irq_data->common = child->common;
-		irq_data->node = child->node;
 		irq_data->domain = domain;
 	}