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authorWill Deacon <will.deacon@arm.com>2012-01-20 12:01:12 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2012-01-23 10:20:05 +0000
commiteb50439b92b6298bf209a982f295ba9c0f7cb30b (patch)
tree8678f4221e4a40907d9781753a8b95c96bbfded6 /arch/arm/common/gic.c
parenta092f2b15399bb4d1aa4e83cffe775f0c946f323 (diff)
ARM: 7293/1: logical_cpu_map: decouple CPU mapping from SMP
It turns out that the logical CPU mapping is useful even when !CONFIG_SMP for manipulation of devices like interrupt and power controllers when running a UP kernel on a CPU other than 0. This can happen when kexecing a UP image from an SMP kernel. In the future, multi-cluster systems running AMP configurations will require something similar for mapping cluster IDs, so it makes sense to decouple this logic in preparation for this support. Acked-by: Yang Bai <hamo.by@gmail.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Reported-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/common/gic.c')
-rw-r--r--arch/arm/common/gic.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/arch/arm/common/gic.c b/arch/arm/common/gic.c
index b2dc2dd7f1d..c47d6199b78 100644
--- a/arch/arm/common/gic.c
+++ b/arch/arm/common/gic.c
@@ -41,6 +41,7 @@
#include <asm/irq.h>
#include <asm/exception.h>
+#include <asm/smp_plat.h>
#include <asm/mach/irq.h>
#include <asm/hardware/gic.h>
@@ -352,11 +353,7 @@ static void __init gic_dist_init(struct gic_chip_data *gic)
unsigned int gic_irqs = gic->gic_irqs;
struct irq_domain *domain = &gic->domain;
void __iomem *base = gic_data_dist_base(gic);
- u32 cpu = 0;
-
-#ifdef CONFIG_SMP
- cpu = cpu_logical_map(smp_processor_id());
-#endif
+ u32 cpu = cpu_logical_map(smp_processor_id());
cpumask = 1 << cpu;
cpumask |= cpumask << 8;