write_inode_now(): avoid unnecessary synchronous write

[linux-2.6-omap-h63xx.git] / include / asm-sh / bitops.h

diff --git a/include/asm-sh/bitops.h b/include/asm-sh/bitops.h
index e34f8250856897b7ee4c5f960cf444fd03f21646..b6ba5a60dec217b4b7f4421db7cc8e402c2e15d4 100644 (file)
--- a/include/asm-sh/bitops.h
+++ b/include/asm-sh/bitops.h
@@ -2,105 +2,32 @@
 #define __ASM_SH_BITOPS_H
 
 #ifdef __KERNEL__
+
+#ifndef _LINUX_BITOPS_H
+#error only <linux/bitops.h> can be included directly
+#endif
+
 #include <asm/system.h>
 /* For __swab32 */
 #include <asm/byteorder.h>
 
-static __inline__ void set_bit(int nr, volatile void * addr)
-{
-       int     mask;
-       volatile unsigned int *a = addr;
-       unsigned long flags;
-
-       a += nr >> 5;
-       mask = 1 << (nr & 0x1f);
-       local_irq_save(flags);
-       *a |= mask;
-       local_irq_restore(flags);
-}
+#ifdef CONFIG_GUSA_RB
+#include <asm/bitops-grb.h>
+#else
+#include <asm/bitops-irq.h>
+#endif
+
 
 /*
  * clear_bit() doesn't provide any barrier for the compiler.
  */
 #define smp_mb__before_clear_bit()     barrier()
 #define smp_mb__after_clear_bit()      barrier()
-static __inline__ void clear_bit(int nr, volatile void * addr)
-{
-       int     mask;
-       volatile unsigned int *a = addr;
-       unsigned long flags;
-
-       a += nr >> 5;
-       mask = 1 << (nr & 0x1f);
-       local_irq_save(flags);
-       *a &= ~mask;
-       local_irq_restore(flags);
-}
-
-static __inline__ void change_bit(int nr, volatile void * addr)
-{
-       int     mask;
-       volatile unsigned int *a = addr;
-       unsigned long flags;
-
-       a += nr >> 5;
-       mask = 1 << (nr & 0x1f);
-       local_irq_save(flags);
-       *a ^= mask;
-       local_irq_restore(flags);
-}
-
-static __inline__ int test_and_set_bit(int nr, volatile void * addr)
-{
-       int     mask, retval;
-       volatile unsigned int *a = addr;
-       unsigned long flags;
-
-       a += nr >> 5;
-       mask = 1 << (nr & 0x1f);
-       local_irq_save(flags);
-       retval = (mask & *a) != 0;
-       *a |= mask;
-       local_irq_restore(flags);
-
-       return retval;
-}
-
-static __inline__ int test_and_clear_bit(int nr, volatile void * addr)
-{
-       int     mask, retval;
-       volatile unsigned int *a = addr;
-       unsigned long flags;
-
-       a += nr >> 5;
-       mask = 1 << (nr & 0x1f);
-       local_irq_save(flags);
-       retval = (mask & *a) != 0;
-       *a &= ~mask;
-       local_irq_restore(flags);
-
-       return retval;
-}
-
-static __inline__ int test_and_change_bit(int nr, volatile void * addr)
-{
-       int     mask, retval;
-       volatile unsigned int *a = addr;
-       unsigned long flags;
-
-       a += nr >> 5;
-       mask = 1 << (nr & 0x1f);
-       local_irq_save(flags);
-       retval = (mask & *a) != 0;
-       *a ^= mask;
-       local_irq_restore(flags);
-
-       return retval;
-}
 
 #include <asm-generic/bitops/non-atomic.h>
 
-static __inline__ unsigned long ffz(unsigned long word)
+#ifdef CONFIG_SUPERH32
+static inline unsigned long ffz(unsigned long word)
 {
        unsigned long result;
 
@@ -120,7 +47,7 @@ static __inline__ unsigned long ffz(unsigned long word)
  *
  * Undefined if no bit exists, so code should check against 0 first.
  */
-static __inline__ unsigned long __ffs(unsigned long word)
+static inline unsigned long __ffs(unsigned long word)
 {
        unsigned long result;
 
@@ -133,10 +60,36 @@ static __inline__ unsigned long __ffs(unsigned long word)
                : "t");
        return result;
 }
+#else
+static inline unsigned long ffz(unsigned long word)
+{
+       unsigned long result, __d2, __d3;
+
+        __asm__("gettr  tr0, %2\n\t"
+                "pta    $+32, tr0\n\t"
+                "andi   %1, 1, %3\n\t"
+                "beq    %3, r63, tr0\n\t"
+                "pta    $+4, tr0\n"
+                "0:\n\t"
+                "shlri.l        %1, 1, %1\n\t"
+                "addi   %0, 1, %0\n\t"
+                "andi   %1, 1, %3\n\t"
+                "beqi   %3, 1, tr0\n"
+                "1:\n\t"
+                "ptabs  %2, tr0\n\t"
+                : "=r" (result), "=r" (word), "=r" (__d2), "=r" (__d3)
+                : "0" (0L), "1" (word));
+
+       return result;
+}
+
+#include <asm-generic/bitops/__ffs.h>
+#endif
 
 #include <asm-generic/bitops/find.h>
 #include <asm-generic/bitops/ffs.h>
 #include <asm-generic/bitops/hweight.h>
+#include <asm-generic/bitops/lock.h>
 #include <asm-generic/bitops/sched.h>
 #include <asm-generic/bitops/ext2-non-atomic.h>
 #include <asm-generic/bitops/ext2-atomic.h>