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MIPS: Remove irqflags.h dependency from bitops.h
The "else clause" of most functions in bitops.h invoked raw_local_irq_{save,restore}() and in doing so had a dependency on irqflags.h. This fix moves said code to bitops.c, removing the dependency. Signed-off-by: Jim Quinlan <jim2101024@gmail.com> Cc: linux-mips@linux-mips.org Cc: David Daney <ddaney.cavm@gmail.com> Cc: Kevin Cernekee cernekee@gmail.com Cc: Jim Quinlan <jim2101024@gmail.com> Patchwork: https://patchwork.linux-mips.org/patch/4320/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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9de79c5006
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@ -30,6 +30,7 @@
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* measurement, and debugging facilities.
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*/
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#include <linux/irqflags.h>
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#include <asm/octeon/cvmx.h>
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#include <asm/octeon/cvmx-l2c.h>
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#include <asm/octeon/cvmx-spinlock.h>
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@ -14,7 +14,6 @@
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#endif
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#include <linux/compiler.h>
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#include <linux/irqflags.h>
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#include <linux/types.h>
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#include <asm/barrier.h>
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#include <asm/byteorder.h> /* sigh ... */
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@ -44,6 +43,24 @@
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#define smp_mb__before_clear_bit() smp_mb__before_llsc()
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#define smp_mb__after_clear_bit() smp_llsc_mb()
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/*
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* These are the "slower" versions of the functions and are in bitops.c.
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* These functions call raw_local_irq_{save,restore}().
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*/
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void __mips_set_bit(unsigned long nr, volatile unsigned long *addr);
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void __mips_clear_bit(unsigned long nr, volatile unsigned long *addr);
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void __mips_change_bit(unsigned long nr, volatile unsigned long *addr);
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int __mips_test_and_set_bit(unsigned long nr,
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volatile unsigned long *addr);
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int __mips_test_and_set_bit_lock(unsigned long nr,
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volatile unsigned long *addr);
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int __mips_test_and_clear_bit(unsigned long nr,
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volatile unsigned long *addr);
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int __mips_test_and_change_bit(unsigned long nr,
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volatile unsigned long *addr);
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/*
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* set_bit - Atomically set a bit in memory
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* @nr: the bit to set
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@ -92,17 +109,8 @@ static inline void set_bit(unsigned long nr, volatile unsigned long *addr)
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: "=&r" (temp), "+m" (*m)
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: "ir" (1UL << bit));
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} while (unlikely(!temp));
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} else {
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volatile unsigned long *a = addr;
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unsigned long mask;
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unsigned long flags;
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a += nr >> SZLONG_LOG;
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mask = 1UL << bit;
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raw_local_irq_save(flags);
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*a |= mask;
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raw_local_irq_restore(flags);
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}
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} else
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__mips_set_bit(nr, addr);
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}
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/*
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@ -153,17 +161,8 @@ static inline void clear_bit(unsigned long nr, volatile unsigned long *addr)
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: "=&r" (temp), "+m" (*m)
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: "ir" (~(1UL << bit)));
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} while (unlikely(!temp));
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} else {
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volatile unsigned long *a = addr;
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unsigned long mask;
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unsigned long flags;
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a += nr >> SZLONG_LOG;
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mask = 1UL << bit;
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raw_local_irq_save(flags);
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*a &= ~mask;
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raw_local_irq_restore(flags);
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}
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} else
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__mips_clear_bit(nr, addr);
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}
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/*
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@ -220,17 +219,8 @@ static inline void change_bit(unsigned long nr, volatile unsigned long *addr)
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: "=&r" (temp), "+m" (*m)
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: "ir" (1UL << bit));
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} while (unlikely(!temp));
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} else {
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volatile unsigned long *a = addr;
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unsigned long mask;
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unsigned long flags;
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a += nr >> SZLONG_LOG;
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mask = 1UL << bit;
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raw_local_irq_save(flags);
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*a ^= mask;
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raw_local_irq_restore(flags);
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}
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} else
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__mips_change_bit(nr, addr);
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}
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/*
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@ -281,18 +271,8 @@ static inline int test_and_set_bit(unsigned long nr,
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} while (unlikely(!res));
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res = temp & (1UL << bit);
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} else {
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volatile unsigned long *a = addr;
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unsigned long mask;
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unsigned long flags;
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a += nr >> SZLONG_LOG;
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mask = 1UL << bit;
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raw_local_irq_save(flags);
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res = (mask & *a);
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*a |= mask;
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raw_local_irq_restore(flags);
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}
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} else
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res = __mips_test_and_set_bit(nr, addr);
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smp_llsc_mb();
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@ -345,18 +325,8 @@ static inline int test_and_set_bit_lock(unsigned long nr,
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} while (unlikely(!res));
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res = temp & (1UL << bit);
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} else {
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volatile unsigned long *a = addr;
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unsigned long mask;
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unsigned long flags;
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a += nr >> SZLONG_LOG;
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mask = 1UL << bit;
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raw_local_irq_save(flags);
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res = (mask & *a);
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*a |= mask;
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raw_local_irq_restore(flags);
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}
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} else
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res = __mips_test_and_set_bit_lock(nr, addr);
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smp_llsc_mb();
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@ -428,18 +398,8 @@ static inline int test_and_clear_bit(unsigned long nr,
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} while (unlikely(!res));
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res = temp & (1UL << bit);
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} else {
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volatile unsigned long *a = addr;
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unsigned long mask;
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unsigned long flags;
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a += nr >> SZLONG_LOG;
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mask = 1UL << bit;
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raw_local_irq_save(flags);
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res = (mask & *a);
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*a &= ~mask;
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raw_local_irq_restore(flags);
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}
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} else
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res = __mips_test_and_clear_bit(nr, addr);
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smp_llsc_mb();
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@ -494,18 +454,8 @@ static inline int test_and_change_bit(unsigned long nr,
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} while (unlikely(!res));
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res = temp & (1UL << bit);
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} else {
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volatile unsigned long *a = addr;
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unsigned long mask;
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unsigned long flags;
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a += nr >> SZLONG_LOG;
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mask = 1UL << bit;
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raw_local_irq_save(flags);
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res = (mask & *a);
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*a ^= mask;
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raw_local_irq_restore(flags);
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}
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} else
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res = __mips_test_and_change_bit(nr, addr);
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smp_llsc_mb();
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@ -15,6 +15,7 @@
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#include <linux/compiler.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/irqflags.h>
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#include <asm/addrspace.h>
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#include <asm/bug.h>
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@ -2,7 +2,7 @@
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# Makefile for MIPS-specific library files..
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#
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lib-y += csum_partial.o delay.o memcpy.o memset.o \
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lib-y += bitops.o csum_partial.o delay.o memcpy.o memset.o \
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strlen_user.o strncpy_user.o strnlen_user.o uncached.o
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obj-y += iomap.o
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179
arch/mips/lib/bitops.c
Normal file
179
arch/mips/lib/bitops.c
Normal file
@ -0,0 +1,179 @@
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (c) 1994-1997, 99, 2000, 06, 07 Ralf Baechle (ralf@linux-mips.org)
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* Copyright (c) 1999, 2000 Silicon Graphics, Inc.
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*/
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#include <linux/bitops.h>
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#include <linux/irqflags.h>
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#include <linux/export.h>
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/**
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* __mips_set_bit - Atomically set a bit in memory. This is called by
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* set_bit() if it cannot find a faster solution.
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* @nr: the bit to set
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* @addr: the address to start counting from
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*/
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void __mips_set_bit(unsigned long nr, volatile unsigned long *addr)
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{
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volatile unsigned long *a = addr;
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unsigned bit = nr & SZLONG_MASK;
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unsigned long mask;
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unsigned long flags;
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a += nr >> SZLONG_LOG;
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mask = 1UL << bit;
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raw_local_irq_save(flags);
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*a |= mask;
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raw_local_irq_restore(flags);
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}
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EXPORT_SYMBOL(__mips_set_bit);
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/**
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* __mips_clear_bit - Clears a bit in memory. This is called by clear_bit() if
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* it cannot find a faster solution.
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* @nr: Bit to clear
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* @addr: Address to start counting from
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*/
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void __mips_clear_bit(unsigned long nr, volatile unsigned long *addr)
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{
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volatile unsigned long *a = addr;
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unsigned bit = nr & SZLONG_MASK;
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unsigned long mask;
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unsigned long flags;
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a += nr >> SZLONG_LOG;
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mask = 1UL << bit;
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raw_local_irq_save(flags);
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*a &= ~mask;
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raw_local_irq_restore(flags);
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}
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EXPORT_SYMBOL(__mips_clear_bit);
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/**
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* __mips_change_bit - Toggle a bit in memory. This is called by change_bit()
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* if it cannot find a faster solution.
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* @nr: Bit to change
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* @addr: Address to start counting from
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*/
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void __mips_change_bit(unsigned long nr, volatile unsigned long *addr)
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{
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volatile unsigned long *a = addr;
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unsigned bit = nr & SZLONG_MASK;
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unsigned long mask;
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unsigned long flags;
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a += nr >> SZLONG_LOG;
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mask = 1UL << bit;
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raw_local_irq_save(flags);
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*a ^= mask;
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raw_local_irq_restore(flags);
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}
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EXPORT_SYMBOL(__mips_change_bit);
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/**
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* __mips_test_and_set_bit - Set a bit and return its old value. This is
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* called by test_and_set_bit() if it cannot find a faster solution.
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* @nr: Bit to set
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* @addr: Address to count from
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*/
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int __mips_test_and_set_bit(unsigned long nr,
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volatile unsigned long *addr)
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{
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volatile unsigned long *a = addr;
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unsigned bit = nr & SZLONG_MASK;
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unsigned long mask;
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unsigned long flags;
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unsigned long res;
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a += nr >> SZLONG_LOG;
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mask = 1UL << bit;
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raw_local_irq_save(flags);
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res = (mask & *a);
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*a |= mask;
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raw_local_irq_restore(flags);
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return res;
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}
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EXPORT_SYMBOL(__mips_test_and_set_bit);
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/**
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* __mips_test_and_set_bit_lock - Set a bit and return its old value. This is
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* called by test_and_set_bit_lock() if it cannot find a faster solution.
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* @nr: Bit to set
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* @addr: Address to count from
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*/
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int __mips_test_and_set_bit_lock(unsigned long nr,
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volatile unsigned long *addr)
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{
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volatile unsigned long *a = addr;
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unsigned bit = nr & SZLONG_MASK;
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unsigned long mask;
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unsigned long flags;
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unsigned long res;
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a += nr >> SZLONG_LOG;
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mask = 1UL << bit;
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raw_local_irq_save(flags);
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res = (mask & *a);
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*a |= mask;
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raw_local_irq_restore(flags);
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return res;
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}
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EXPORT_SYMBOL(__mips_test_and_set_bit_lock);
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/**
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* __mips_test_and_clear_bit - Clear a bit and return its old value. This is
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* called by test_and_clear_bit() if it cannot find a faster solution.
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* @nr: Bit to clear
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* @addr: Address to count from
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*/
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int __mips_test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
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{
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volatile unsigned long *a = addr;
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unsigned bit = nr & SZLONG_MASK;
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unsigned long mask;
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unsigned long flags;
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unsigned long res;
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a += nr >> SZLONG_LOG;
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mask = 1UL << bit;
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raw_local_irq_save(flags);
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res = (mask & *a);
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*a &= ~mask;
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raw_local_irq_restore(flags);
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return res;
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}
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EXPORT_SYMBOL(__mips_test_and_clear_bit);
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/**
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* __mips_test_and_change_bit - Change a bit and return its old value. This is
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* called by test_and_change_bit() if it cannot find a faster solution.
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* @nr: Bit to change
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* @addr: Address to count from
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*/
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int __mips_test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
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{
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volatile unsigned long *a = addr;
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unsigned bit = nr & SZLONG_MASK;
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unsigned long mask;
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unsigned long flags;
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unsigned long res;
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a += nr >> SZLONG_LOG;
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mask = 1UL << bit;
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raw_local_irq_save(flags);
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res = (mask & *a);
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*a ^= mask;
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raw_local_irq_restore(flags);
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return res;
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}
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EXPORT_SYMBOL(__mips_test_and_change_bit);
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