#include <linux/thread_info.h>
#include <linux/kernel.h>
#include <linux/stringify.h>
-#include <linux/irqflags.h>
+#include <linux/bottom_half.h>
#include <asm/system.h>
#define read_lock(lock) _read_lock(lock)
#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)
-#define spin_lock_irqsave(lock, flags) \
- do { \
- BUILD_CHECK_IRQ_FLAGS(flags); \
- flags = _spin_lock_irqsave(lock); \
- } while (0)
-#define read_lock_irqsave(lock, flags) \
- do { \
- BUILD_CHECK_IRQ_FLAGS(flags); \
- flags = _read_lock_irqsave(lock); \
- } while (0)
-#define write_lock_irqsave(lock, flags) \
- do { \
- BUILD_CHECK_IRQ_FLAGS(flags); \
- flags = _write_lock_irqsave(lock); \
- } while (0)
+
+#define spin_lock_irqsave(lock, flags) flags = _spin_lock_irqsave(lock)
+#define read_lock_irqsave(lock, flags) flags = _read_lock_irqsave(lock)
+#define write_lock_irqsave(lock, flags) flags = _write_lock_irqsave(lock)
#ifdef CONFIG_DEBUG_LOCK_ALLOC
-#define spin_lock_irqsave_nested(lock, flags, subclass) \
- do { \
- BUILD_CHECK_IRQ_FLAGS(flags); \
- flags = _spin_lock_irqsave_nested(lock, subclass); \
- } while (0)
+#define spin_lock_irqsave_nested(lock, flags, subclass) \
+ flags = _spin_lock_irqsave_nested(lock, subclass)
#else
-#define spin_lock_irqsave_nested(lock, flags, subclass) \
- do { \
- BUILD_CHECK_IRQ_FLAGS(flags); \
- flags = _spin_lock_irqsave(lock); \
- } while (0)
+#define spin_lock_irqsave_nested(lock, flags, subclass) \
+ flags = _spin_lock_irqsave(lock)
#endif
#else
-#define spin_lock_irqsave(lock, flags) \
- do { \
- BUILD_CHECK_IRQ_FLAGS(flags); \
- _spin_lock_irqsave(lock, flags); \
- } while (0)
-#define read_lock_irqsave(lock, flags) \
- do { \
- BUILD_CHECK_IRQ_FLAGS(flags); \
- _read_lock_irqsave(lock, flags); \
- } while (0)
-#define write_lock_irqsave(lock, flags) \
- do { \
- BUILD_CHECK_IRQ_FLAGS(flags); \
- _write_lock_irqsave(lock, flags); \
- } while (0)
+
+#define spin_lock_irqsave(lock, flags) _spin_lock_irqsave(lock, flags)
+#define read_lock_irqsave(lock, flags) _read_lock_irqsave(lock, flags)
+#define write_lock_irqsave(lock, flags) _write_lock_irqsave(lock, flags)
#define spin_lock_irqsave_nested(lock, flags, subclass) \
spin_lock_irqsave(lock, flags)
# define read_unlock_irq(lock) _read_unlock_irq(lock)
# define write_unlock_irq(lock) _write_unlock_irq(lock)
#else
-# define spin_unlock(lock) __raw_spin_unlock(&(lock)->raw_lock)
-# define read_unlock(lock) __raw_read_unlock(&(lock)->raw_lock)
-# define write_unlock(lock) __raw_write_unlock(&(lock)->raw_lock)
-# define spin_unlock_irq(lock) \
- do { __raw_spin_unlock(&(lock)->raw_lock); local_irq_enable(); } while (0)
-# define read_unlock_irq(lock) \
- do { __raw_read_unlock(&(lock)->raw_lock); local_irq_enable(); } while (0)
-# define write_unlock_irq(lock) \
- do { __raw_write_unlock(&(lock)->raw_lock); local_irq_enable(); } while (0)
+# define spin_unlock(lock) \
+ do {__raw_spin_unlock(&(lock)->raw_lock); __release(lock); } while (0)
+# define read_unlock(lock) \
+ do {__raw_read_unlock(&(lock)->raw_lock); __release(lock); } while (0)
+# define write_unlock(lock) \
+ do {__raw_write_unlock(&(lock)->raw_lock); __release(lock); } while (0)
+# define spin_unlock_irq(lock) \
+do { \
+ __raw_spin_unlock(&(lock)->raw_lock); \
+ __release(lock); \
+ local_irq_enable(); \
+} while (0)
+# define read_unlock_irq(lock) \
+do { \
+ __raw_read_unlock(&(lock)->raw_lock); \
+ __release(lock); \
+ local_irq_enable(); \
+} while (0)
+# define write_unlock_irq(lock) \
+do { \
+ __raw_write_unlock(&(lock)->raw_lock); \
+ __release(lock); \
+ local_irq_enable(); \
+} while (0)
#endif
#define spin_unlock_irqrestore(lock, flags) \
- do { \
- BUILD_CHECK_IRQ_FLAGS(flags); \
- _spin_unlock_irqrestore(lock, flags); \
- } while (0)
+ _spin_unlock_irqrestore(lock, flags)
#define spin_unlock_bh(lock) _spin_unlock_bh(lock)
#define read_unlock_irqrestore(lock, flags) \
- do { \
- BUILD_CHECK_IRQ_FLAGS(flags); \
- _read_unlock_irqrestore(lock, flags); \
- } while (0)
+ _read_unlock_irqrestore(lock, flags)
#define read_unlock_bh(lock) _read_unlock_bh(lock)
#define write_unlock_irqrestore(lock, flags) \
- do { \
- BUILD_CHECK_IRQ_FLAGS(flags); \
- _write_unlock_irqrestore(lock, flags); \
- } while (0)
+ _write_unlock_irqrestore(lock, flags)
#define write_unlock_bh(lock) _write_unlock_bh(lock)
#define spin_trylock_bh(lock) __cond_lock(lock, _spin_trylock_bh(lock))
#define spin_trylock_irqsave(lock, flags) \
({ \
- BUILD_CHECK_IRQ_FLAGS(flags); \
local_irq_save(flags); \
spin_trylock(lock) ? \
1 : ({ local_irq_restore(flags); 0; }); \
})
+/*
+ * Locks two spinlocks l1 and l2.
+ * l1_first indicates if spinlock l1 should be taken first.
+ */
+static inline void double_spin_lock(spinlock_t *l1, spinlock_t *l2,
+ bool l1_first)
+ __acquires(l1)
+ __acquires(l2)
+{
+ if (l1_first) {
+ spin_lock(l1);
+ spin_lock(l2);
+ } else {
+ spin_lock(l2);
+ spin_lock(l1);
+ }
+}
+
+/*
+ * Unlocks two spinlocks l1 and l2.
+ * l1_taken_first indicates if spinlock l1 was taken first and therefore
+ * should be released after spinlock l2.
+ */
+static inline void double_spin_unlock(spinlock_t *l1, spinlock_t *l2,
+ bool l1_taken_first)
+ __releases(l1)
+ __releases(l2)
+{
+ if (l1_taken_first) {
+ spin_unlock(l2);
+ spin_unlock(l1);
+ } else {
+ spin_unlock(l1);
+ spin_unlock(l2);
+ }
+}
+
/*
* Pull the atomic_t declaration:
* (asm-mips/atomic.h needs above definitions)
projects / powerpc.git / blobdiff