[SPARC]: Make bitops use same spinlocks as atomics.

Recent workqueue changes basically make this a formal requirement.

Also, move atomic32.o from lib-y to obj-y since it exports symbols
to modules.

Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 41 insertions, 111 deletions

diff --git a/arch/sparc/lib/Makefile b/arch/sparc/lib/Makefile
index 5db7e1d85385..9ddc5b9ce3bd 100644
--- a/arch/sparc/lib/Makefile
+++ b/arch/sparc/lib/Makefile
@@ -7,7 +7,7 @@ EXTRA_AFLAGS := -ansi -DST_DIV0=0x02
 lib-y := mul.o rem.o sdiv.o udiv.o umul.o urem.o ashrdi3.o memcpy.o memset.o \
          strlen.o checksum.o blockops.o memscan.o memcmp.o strncmp.o \
 	 strncpy_from_user.o divdi3.o udivdi3.o strlen_user.o \
-	 copy_user.o locks.o atomic.o atomic32.o bitops.o \
+	 copy_user.o locks.o atomic.o \
 	 lshrdi3.o ashldi3.o rwsem.o muldi3.o bitext.o
 
-obj-y += iomap.o
+obj-y += iomap.o atomic32.o
diff --git a/arch/sparc/lib/atomic32.c b/arch/sparc/lib/atomic32.c
index de84f8534bac..53ddcd9d1e60 100644
--- a/arch/sparc/lib/atomic32.c
+++ b/arch/sparc/lib/atomic32.c
@@ -76,3 +76,42 @@ void atomic_set(atomic_t *v, int i)
 	spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
 }
 EXPORT_SYMBOL(atomic_set);
+
+unsigned long ___set_bit(unsigned long *addr, unsigned long mask)
+{
+	unsigned long old, flags;
+
+	spin_lock_irqsave(ATOMIC_HASH(addr), flags);
+	old = *addr;
+	*addr = old | mask;
+	spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
+
+	return old & mask;
+}
+EXPORT_SYMBOL(___set_bit);
+
+unsigned long ___clear_bit(unsigned long *addr, unsigned long mask)
+{
+	unsigned long old, flags;
+
+	spin_lock_irqsave(ATOMIC_HASH(addr), flags);
+	old = *addr;
+	*addr = old & ~mask;
+	spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
+
+	return old & mask;
+}
+EXPORT_SYMBOL(___clear_bit);
+
+unsigned long ___change_bit(unsigned long *addr, unsigned long mask)
+{
+	unsigned long old, flags;
+
+	spin_lock_irqsave(ATOMIC_HASH(addr), flags);
+	old = *addr;
+	*addr = old ^ mask;
+	spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
+
+	return old & mask;
+}
+EXPORT_SYMBOL(___change_bit);
diff --git a/arch/sparc/lib/bitops.S b/arch/sparc/lib/bitops.S
deleted file mode 100644
index cb7fb66a40c8..000000000000
--- a/arch/sparc/lib/bitops.S
+++ /dev/null
@@ -1,109 +0,0 @@
-/* bitops.S: Low level assembler bit operations.
- *
- * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
- */
-
-#include <asm/ptrace.h>
-#include <asm/psr.h>
-
-	.text
-	.align	4
-
-	.globl  __bitops_begin
-__bitops_begin:
-
-	/* Take bits in %g2 and set them in word at %g1,
-	 * return whether bits were set in original value
-	 * in %g2.  %g4 holds value to restore into %o7
-	 * in delay slot of jmpl return, %g3 + %g5 + %g7 can be
-	 * used as temporaries and thus is considered clobbered
-	 * by all callers.
-	 */
-	.globl	___set_bit
-___set_bit:
-	rd	%psr, %g3
-	nop; nop; nop;
-	or	%g3, PSR_PIL, %g5
-	wr	%g5, 0x0, %psr
-	nop; nop; nop
-#ifdef CONFIG_SMP
-	set	bitops_spinlock, %g5
-2:	ldstub	[%g5], %g7		! Spin on the byte lock for SMP.
-	orcc	%g7, 0x0, %g0		! Did we get it?
-	bne	2b			! Nope...
-#endif
-	 ld	[%g1], %g7
-	or	%g7, %g2, %g5
-	and	%g7, %g2, %g2
-#ifdef CONFIG_SMP
-	st	%g5, [%g1]
-	set	bitops_spinlock, %g5
-	stb	%g0, [%g5]
-#else
-	st	%g5, [%g1]
-#endif
-	wr	%g3, 0x0, %psr
-	nop; nop; nop
-	jmpl	%o7, %g0
-	 mov	%g4, %o7
-
-	/* Same as above, but clears the bits from %g2 instead. */
-	.globl	___clear_bit
-___clear_bit:
-	rd	%psr, %g3
-	nop; nop; nop
-	or	%g3, PSR_PIL, %g5
-	wr	%g5, 0x0, %psr
-	nop; nop; nop
-#ifdef CONFIG_SMP
-	set	bitops_spinlock, %g5
-2:	ldstub	[%g5], %g7		! Spin on the byte lock for SMP.
-	orcc	%g7, 0x0, %g0		! Did we get it?
-	bne	2b			! Nope...
-#endif
-	 ld	[%g1], %g7
-	andn	%g7, %g2, %g5
-	and	%g7, %g2, %g2
-#ifdef CONFIG_SMP
-	st	%g5, [%g1]
-	set	bitops_spinlock, %g5
-	stb	%g0, [%g5]
-#else
-	st	%g5, [%g1]
-#endif
-	wr	%g3, 0x0, %psr
-	nop; nop; nop
-	jmpl	%o7, %g0
-	 mov	%g4, %o7
-
-	/* Same thing again, but this time toggles the bits from %g2. */
-	.globl	___change_bit
-___change_bit:
-	rd	%psr, %g3
-	nop; nop; nop
-	or	%g3, PSR_PIL, %g5
-	wr	%g5, 0x0, %psr
-	nop; nop; nop
-#ifdef CONFIG_SMP
-	set	bitops_spinlock, %g5
-2:	ldstub	[%g5], %g7		! Spin on the byte lock for SMP.
-	orcc	%g7, 0x0, %g0		! Did we get it?
-	bne	2b			! Nope...
-#endif
-	 ld	[%g1], %g7
-	xor	%g7, %g2, %g5
-	and	%g7, %g2, %g2
-#ifdef CONFIG_SMP
-	st	%g5, [%g1]
-	set	bitops_spinlock, %g5
-	stb	%g0, [%g5]
-#else
-	st	%g5, [%g1]
-#endif
-	wr	%g3, 0x0, %psr
-	nop; nop; nop
-	jmpl	%o7, %g0
-	 mov	%g4, %o7
-
-	.globl  __bitops_end
-__bitops_end: