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| author | Yinghai Lu <yinghai@kernel.org> | 2010-02-10 01:20:34 -0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2010-02-17 17:27:03 -0800 |
| commit | 99558f0bbe68cb09799ec38adbaa3f3b2dc7ba63 (patch) | |
| tree | 03a0393cae76ac3d0249fc53128974433d94e802 | |
| parent | 773e3eb7b81e5ba13b5155dfb3bb75b8ce37f8f9 (diff) | |
| download | op-kernel-dev-99558f0bbe68cb09799ec38adbaa3f3b2dc7ba63.zip op-kernel-dev-99558f0bbe68cb09799ec38adbaa3f3b2dc7ba63.tar.gz | |
sparseirq: Change irq_desc_ptrs to static
Add replace_irq_desc() instead of poking at the array directly.
-v2: remove unneeded boundary check in replace_irq_desc
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <1265793639-15071-31-git-send-email-yinghai@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| -rw-r--r-- | kernel/irq/handle.c | 7 | ||||
| -rw-r--r-- | kernel/irq/internals.h | 6 | ||||
| -rw-r--r-- | kernel/irq/numa_migrate.c | 4 |
3 files changed, 9 insertions, 8 deletions
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c index 0e823c0..266f798 100644 --- a/kernel/irq/handle.c +++ b/kernel/irq/handle.c @@ -127,7 +127,7 @@ static void init_one_irq_desc(int irq, struct irq_desc *desc, int node) */ DEFINE_RAW_SPINLOCK(sparse_irq_lock); -struct irq_desc **irq_desc_ptrs __read_mostly; +static struct irq_desc **irq_desc_ptrs __read_mostly; static struct irq_desc irq_desc_legacy[NR_IRQS_LEGACY] __cacheline_aligned_in_smp = { [0 ... NR_IRQS_LEGACY-1] = { @@ -192,6 +192,11 @@ struct irq_desc *irq_to_desc(unsigned int irq) return NULL; } +void replace_irq_desc(unsigned int irq, struct irq_desc *desc) +{ + irq_desc_ptrs[irq] = desc; +} + struct irq_desc * __ref irq_to_desc_alloc_node(unsigned int irq, int node) { struct irq_desc *desc; diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h index b2821f0..c63f3bc 100644 --- a/kernel/irq/internals.h +++ b/kernel/irq/internals.h @@ -21,11 +21,7 @@ extern void clear_kstat_irqs(struct irq_desc *desc); extern raw_spinlock_t sparse_irq_lock; #ifdef CONFIG_SPARSE_IRQ -/* irq_desc_ptrs allocated at boot time */ -extern struct irq_desc **irq_desc_ptrs; -#else -/* irq_desc_ptrs is a fixed size array */ -extern struct irq_desc *irq_desc_ptrs[NR_IRQS]; +void replace_irq_desc(unsigned int irq, struct irq_desc *desc); #endif #ifdef CONFIG_PROC_FS diff --git a/kernel/irq/numa_migrate.c b/kernel/irq/numa_migrate.c index 26bac9d..963559d 100644 --- a/kernel/irq/numa_migrate.c +++ b/kernel/irq/numa_migrate.c @@ -70,7 +70,7 @@ static struct irq_desc *__real_move_irq_desc(struct irq_desc *old_desc, raw_spin_lock_irqsave(&sparse_irq_lock, flags); /* We have to check it to avoid races with another CPU */ - desc = irq_desc_ptrs[irq]; + desc = irq_to_desc(irq); if (desc && old_desc != desc) goto out_unlock; @@ -90,7 +90,7 @@ static struct irq_desc *__real_move_irq_desc(struct irq_desc *old_desc, goto out_unlock; } - irq_desc_ptrs[irq] = desc; + replace_irq_desc(irq, desc); raw_spin_unlock_irqrestore(&sparse_irq_lock, flags); /* free the old one */ |
