locking, ARM: Annotate low level hw locks as raw
Annotate the low level hardware locks which must not be preempted.
In mainline this change documents the low level nature of
the lock - otherwise there's no functional difference. Lockdep
and Sparse checking will work as usual.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/arm/include/asm/dma.h b/arch/arm/include/asm/dma.h
index 628670e..69a5b0b 100644
--- a/arch/arm/include/asm/dma.h
+++ b/arch/arm/include/asm/dma.h
@@ -34,18 +34,18 @@
#define DMA_MODE_CASCADE 0xc0
#define DMA_AUTOINIT 0x10
-extern spinlock_t dma_spin_lock;
+extern raw_spinlock_t dma_spin_lock;
static inline unsigned long claim_dma_lock(void)
{
unsigned long flags;
- spin_lock_irqsave(&dma_spin_lock, flags);
+ raw_spin_lock_irqsave(&dma_spin_lock, flags);
return flags;
}
static inline void release_dma_lock(unsigned long flags)
{
- spin_unlock_irqrestore(&dma_spin_lock, flags);
+ raw_spin_unlock_irqrestore(&dma_spin_lock, flags);
}
/* Clear the 'DMA Pointer Flip Flop'.
diff --git a/arch/arm/include/asm/mmu.h b/arch/arm/include/asm/mmu.h
index b4ffe9d..1496565 100644
--- a/arch/arm/include/asm/mmu.h
+++ b/arch/arm/include/asm/mmu.h
@@ -6,7 +6,7 @@
typedef struct {
#ifdef CONFIG_CPU_HAS_ASID
unsigned int id;
- spinlock_t id_lock;
+ raw_spinlock_t id_lock;
#endif
unsigned int kvm_seq;
} mm_context_t;
@@ -16,7 +16,7 @@
/* init_mm.context.id_lock should be initialized. */
#define INIT_MM_CONTEXT(name) \
- .context.id_lock = __SPIN_LOCK_UNLOCKED(name.context.id_lock),
+ .context.id_lock = __RAW_SPIN_LOCK_UNLOCKED(name.context.id_lock),
#else
#define ASID(mm) (0)
#endif