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authorFrederic Weisbecker <fweisbec@gmail.com>2014-08-16 18:47:53 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-10-15 12:29:23 +0200
commit6c3dfd886da9fd6529693fd0b2cd5f9fb8acd298 (patch)
treedf4a4bde716f9e6351cf74c574afe04abd7bad3d
parent1d3408209d43d2e72b5d8dbfb9b60fece399d75b (diff)
downloadlinux-6c3dfd886da9fd6529693fd0b2cd5f9fb8acd298.tar.gz
arm: Tell irq work about self IPI support
commit 09f6edd424218eb69078551b2ecfada1f2d098eb upstream. ARM irq work IPI support depends on SMP support. That information is partly known at early boottime. Lets implement arch_irq_work_has_interrupt() accordingly. Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--arch/arm/include/asm/Kbuild1
-rw-r--r--arch/arm/include/asm/irq_work.h11
-rw-r--r--arch/arm/kernel/smp.c2
3 files changed, 12 insertions, 2 deletions
diff --git a/arch/arm/include/asm/Kbuild b/arch/arm/include/asm/Kbuild
index 202905e7ea0c..70cd84eb7fda 100644
--- a/arch/arm/include/asm/Kbuild
+++ b/arch/arm/include/asm/Kbuild
@@ -11,7 +11,6 @@ generic-y += hash.h
generic-y += ioctl.h
generic-y += ipcbuf.h
generic-y += irq_regs.h
-generic-y += irq_work.h
generic-y += kdebug.h
generic-y += local.h
generic-y += local64.h
diff --git a/arch/arm/include/asm/irq_work.h b/arch/arm/include/asm/irq_work.h
new file mode 100644
index 000000000000..712d03e5973a
--- /dev/null
+++ b/arch/arm/include/asm/irq_work.h
@@ -0,0 +1,11 @@
+#ifndef __ASM_ARM_IRQ_WORK_H
+#define __ASM_ARM_IRQ_WORK_H
+
+#include <asm/smp_plat.h>
+
+static inline bool arch_irq_work_has_interrupt(void)
+{
+ return is_smp();
+}
+
+#endif /* _ASM_ARM_IRQ_WORK_H */
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 9388a3d479e1..bbe22fcb78f6 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -503,7 +503,7 @@ void arch_send_call_function_single_ipi(int cpu)
#ifdef CONFIG_IRQ_WORK
void arch_irq_work_raise(void)
{
- if (is_smp())
+ if (arch_irq_work_has_interrupt())
smp_cross_call(cpumask_of(smp_processor_id()), IPI_IRQ_WORK);
}
#endif