[PATCH] Additions to .data.read_mostly section

Mark variables which are usually accessed for reads with __readmostly.

Signed-off-by: Alok N Kataria <alokk@calsoftinc.com>
Signed-off-by: Shai Fultheim <shai@scalex86.org>
Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 5 insertions, 5 deletions

diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
index 76bcc4e6979d..ba1a744e9bf0 100644
--- a/arch/x86_64/kernel/io_apic.c
+++ b/arch/x86_64/kernel/io_apic.c
@@ -70,7 +70,7 @@ static struct irq_pin_list {
         short apic, pin, next;
 } irq_2_pin[PIN_MAP_SIZE];
 
-int vector_irq[NR_VECTORS] = { [0 ... NR_VECTORS - 1] = -1};
+int vector_irq[NR_VECTORS] __read_mostly = { [0 ... NR_VECTORS - 1] = -1};
 #ifdef CONFIG_PCI_MSI
 #define vector_to_irq(vector)   \
         (platform_legacy_irq(vector) ? vector : vector_irq[vector])
@@ -683,7 +683,7 @@ static inline int IO_APIC_irq_trigger(int irq)
 }
 
 /* irq_vectors is indexed by the sum of all RTEs in all I/O APICs. */
-u8 irq_vector[NR_IRQ_VECTORS] = { FIRST_DEVICE_VECTOR , 0 };
+u8 irq_vector[NR_IRQ_VECTORS] __read_mostly = { FIRST_DEVICE_VECTOR , 0 };
 
 int assign_irq_vector(int irq)
 {
@@ -1443,7 +1443,7 @@ static void set_ioapic_affinity_vector (unsigned int vector,
  * races.
  */
 
-static struct hw_interrupt_type ioapic_edge_type = {
+static struct hw_interrupt_type ioapic_edge_type __read_mostly = {
         .typename = "IO-APIC-edge",
         .startup        = startup_edge_ioapic,
         .shutdown       = shutdown_edge_ioapic,
@@ -1456,7 +1456,7 @@ static struct hw_interrupt_type ioapic_edge_type = {
 #endif
 };
 
-static struct hw_interrupt_type ioapic_level_type = {
+static struct hw_interrupt_type ioapic_level_type __read_mostly = {
         .typename = "IO-APIC-level",
         .startup        = startup_level_ioapic,
         .shutdown       = shutdown_level_ioapic,
@@ -1529,7 +1529,7 @@ static void ack_lapic_irq (unsigned int irq)
 
 static void end_lapic_irq (unsigned int i) { /* nothing */ }
 
-static struct hw_interrupt_type lapic_irq_type = {
+static struct hw_interrupt_type lapic_irq_type __read_mostly = {
         .typename = "local-APIC-edge",
         .startup = NULL, /* startup_irq() not used for IRQ0 */
         .shutdown = NULL, /* shutdown_irq() not used for IRQ0 */