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-rw-r--r--include/asm-mips/bitops.h92
1 files changed, 29 insertions, 63 deletions
diff --git a/include/asm-mips/bitops.h b/include/asm-mips/bitops.h
index 1bb89c5a10e..06445de1324 100644
--- a/include/asm-mips/bitops.h
+++ b/include/asm-mips/bitops.h
@@ -3,38 +3,34 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
- * Copyright (c) 1994 - 1997, 1999, 2000 Ralf Baechle (ralf@gnu.org)
+ * Copyright (c) 1994 - 1997, 1999, 2000, 06 Ralf Baechle (ralf@linux-mips.org)
* Copyright (c) 1999, 2000 Silicon Graphics, Inc.
*/
#ifndef _ASM_BITOPS_H
#define _ASM_BITOPS_H
#include <linux/compiler.h>
+#include <linux/irqflags.h>
#include <linux/types.h>
+#include <asm/barrier.h>
#include <asm/bug.h>
#include <asm/byteorder.h> /* sigh ... */
#include <asm/cpu-features.h>
+#include <asm/sgidefs.h>
+#include <asm/war.h>
#if (_MIPS_SZLONG == 32)
#define SZLONG_LOG 5
#define SZLONG_MASK 31UL
#define __LL "ll "
#define __SC "sc "
-#define cpu_to_lelongp(x) cpu_to_le32p((__u32 *) (x))
#elif (_MIPS_SZLONG == 64)
#define SZLONG_LOG 6
#define SZLONG_MASK 63UL
#define __LL "lld "
#define __SC "scd "
-#define cpu_to_lelongp(x) cpu_to_le64p((__u64 *) (x))
#endif
-#ifdef __KERNEL__
-
-#include <linux/irqflags.h>
-#include <asm/sgidefs.h>
-#include <asm/war.h>
-
/*
* clear_bit() doesn't provide any barrier for the compiler.
*/
@@ -42,20 +38,6 @@
#define smp_mb__after_clear_bit() smp_mb()
/*
- * Only disable interrupt for kernel mode stuff to keep usermode stuff
- * that dares to use kernel include files alive.
- */
-
-#define __bi_flags unsigned long flags
-#define __bi_local_irq_save(x) local_irq_save(x)
-#define __bi_local_irq_restore(x) local_irq_restore(x)
-#else
-#define __bi_flags
-#define __bi_local_irq_save(x)
-#define __bi_local_irq_restore(x)
-#endif /* __KERNEL__ */
-
-/*
* set_bit - Atomically set a bit in memory
* @nr: the bit to set
* @addr: the address to start counting from
@@ -93,13 +75,13 @@ static inline void set_bit(unsigned long nr, volatile unsigned long *addr)
} else {
volatile unsigned long *a = addr;
unsigned long mask;
- __bi_flags;
+ unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << (nr & SZLONG_MASK);
- __bi_local_irq_save(flags);
+ local_irq_save(flags);
*a |= mask;
- __bi_local_irq_restore(flags);
+ local_irq_restore(flags);
}
}
@@ -141,13 +123,13 @@ static inline void clear_bit(unsigned long nr, volatile unsigned long *addr)
} else {
volatile unsigned long *a = addr;
unsigned long mask;
- __bi_flags;
+ unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << (nr & SZLONG_MASK);
- __bi_local_irq_save(flags);
+ local_irq_save(flags);
*a &= ~mask;
- __bi_local_irq_restore(flags);
+ local_irq_restore(flags);
}
}
@@ -191,13 +173,13 @@ static inline void change_bit(unsigned long nr, volatile unsigned long *addr)
} else {
volatile unsigned long *a = addr;
unsigned long mask;
- __bi_flags;
+ unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << (nr & SZLONG_MASK);
- __bi_local_irq_save(flags);
+ local_irq_save(flags);
*a ^= mask;
- __bi_local_irq_restore(flags);
+ local_irq_restore(flags);
}
}
@@ -223,9 +205,6 @@ static inline int test_and_set_bit(unsigned long nr,
" " __SC "%2, %1 \n"
" beqzl %2, 1b \n"
" and %2, %0, %3 \n"
-#ifdef CONFIG_SMP
- " sync \n"
-#endif
" .set mips0 \n"
: "=&r" (temp), "=m" (*m), "=&r" (res)
: "r" (1UL << (nr & SZLONG_MASK)), "m" (*m)
@@ -245,9 +224,6 @@ static inline int test_and_set_bit(unsigned long nr,
" " __SC "%2, %1 \n"
" beqz %2, 1b \n"
" and %2, %0, %3 \n"
-#ifdef CONFIG_SMP
- " sync \n"
-#endif
" .set pop \n"
: "=&r" (temp), "=m" (*m), "=&r" (res)
: "r" (1UL << (nr & SZLONG_MASK)), "m" (*m)
@@ -258,17 +234,19 @@ static inline int test_and_set_bit(unsigned long nr,
volatile unsigned long *a = addr;
unsigned long mask;
int retval;
- __bi_flags;
+ unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << (nr & SZLONG_MASK);
- __bi_local_irq_save(flags);
+ local_irq_save(flags);
retval = (mask & *a) != 0;
*a |= mask;
- __bi_local_irq_restore(flags);
+ local_irq_restore(flags);
return retval;
}
+
+ smp_mb();
}
/*
@@ -294,9 +272,6 @@ static inline int test_and_clear_bit(unsigned long nr,
" " __SC "%2, %1 \n"
" beqzl %2, 1b \n"
" and %2, %0, %3 \n"
-#ifdef CONFIG_SMP
- " sync \n"
-#endif
" .set mips0 \n"
: "=&r" (temp), "=m" (*m), "=&r" (res)
: "r" (1UL << (nr & SZLONG_MASK)), "m" (*m)
@@ -317,9 +292,6 @@ static inline int test_and_clear_bit(unsigned long nr,
" " __SC "%2, %1 \n"
" beqz %2, 1b \n"
" and %2, %0, %3 \n"
-#ifdef CONFIG_SMP
- " sync \n"
-#endif
" .set pop \n"
: "=&r" (temp), "=m" (*m), "=&r" (res)
: "r" (1UL << (nr & SZLONG_MASK)), "m" (*m)
@@ -330,17 +302,19 @@ static inline int test_and_clear_bit(unsigned long nr,
volatile unsigned long *a = addr;
unsigned long mask;
int retval;
- __bi_flags;
+ unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << (nr & SZLONG_MASK);
- __bi_local_irq_save(flags);
+ local_irq_save(flags);
retval = (mask & *a) != 0;
*a &= ~mask;
- __bi_local_irq_restore(flags);
+ local_irq_restore(flags);
return retval;
}
+
+ smp_mb();
}
/*
@@ -365,9 +339,6 @@ static inline int test_and_change_bit(unsigned long nr,
" " __SC "%2, %1 \n"
" beqzl %2, 1b \n"
" and %2, %0, %3 \n"
-#ifdef CONFIG_SMP
- " sync \n"
-#endif
" .set mips0 \n"
: "=&r" (temp), "=m" (*m), "=&r" (res)
: "r" (1UL << (nr & SZLONG_MASK)), "m" (*m)
@@ -387,9 +358,6 @@ static inline int test_and_change_bit(unsigned long nr,
" " __SC "\t%2, %1 \n"
" beqz %2, 1b \n"
" and %2, %0, %3 \n"
-#ifdef CONFIG_SMP
- " sync \n"
-#endif
" .set pop \n"
: "=&r" (temp), "=m" (*m), "=&r" (res)
: "r" (1UL << (nr & SZLONG_MASK)), "m" (*m)
@@ -399,22 +367,20 @@ static inline int test_and_change_bit(unsigned long nr,
} else {
volatile unsigned long *a = addr;
unsigned long mask, retval;
- __bi_flags;
+ unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << (nr & SZLONG_MASK);
- __bi_local_irq_save(flags);
+ local_irq_save(flags);
retval = (mask & *a) != 0;
*a ^= mask;
- __bi_local_irq_restore(flags);
+ local_irq_restore(flags);
return retval;
}
-}
-#undef __bi_flags
-#undef __bi_local_irq_save
-#undef __bi_local_irq_restore
+ smp_mb();
+}
#include <asm-generic/bitops/non-atomic.h>
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-14 00:34:32 +0000