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MIPS: Remove irqflags.h dependency from bitops.h

Browse Source 
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>
This commit is contained in:
Jim Quinlan 2012-09-06 11:36:55 -04:00 committed by Ralf Baechle
parent 9de79c5006
commit 92d11594f6
5 changed files with 214 additions and 83 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/mips/cavium-octeon/executive/cvmx-l2c.c
View File

@ -30,6 +30,7 @@
* measurement, and debugging facilities.
*/
#include <linux/irqflags.h>
#include <asm/octeon/cvmx.h>
#include <asm/octeon/cvmx-l2c.h>
#include <asm/octeon/cvmx-spinlock.h>

114
arch/mips/include/asm/bitops.h
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@ -14,7 +14,6 @@
#endif
#include <linux/compiler.h>
#include <linux/irqflags.h>
#include <linux/types.h>
#include <asm/barrier.h>
#include <asm/byteorder.h> /* sigh ... */
@ -44,6 +43,24 @@
#define smp_mb__before_clear_bit() smp_mb__before_llsc()
#define smp_mb__after_clear_bit() smp_llsc_mb()
/*
* These are the "slower" versions of the functions and are in bitops.c.
* These functions call raw_local_irq_{save,restore}().
*/
void __mips_set_bit(unsigned long nr, volatile unsigned long *addr);
void __mips_clear_bit(unsigned long nr, volatile unsigned long *addr);
void __mips_change_bit(unsigned long nr, volatile unsigned long *addr);
int __mips_test_and_set_bit(unsigned long nr,
volatile unsigned long *addr);
int __mips_test_and_set_bit_lock(unsigned long nr,
volatile unsigned long *addr);
int __mips_test_and_clear_bit(unsigned long nr,
volatile unsigned long *addr);
int __mips_test_and_change_bit(unsigned long nr,
volatile unsigned long *addr);
/*
* set_bit - Atomically set a bit in memory
* @nr: the bit to set
@ -92,17 +109,8 @@ static inline void set_bit(unsigned long nr, volatile unsigned long *addr)
: "=&r" (temp), "+m" (*m)
: "ir" (1UL << bit));
} while (unlikely(!temp));
} else {
volatile unsigned long *a = addr;
unsigned long mask;
unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << bit;
raw_local_irq_save(flags);
*a |= mask;
raw_local_irq_restore(flags);
}
} else
__mips_set_bit(nr, addr);
}
/*
@ -153,17 +161,8 @@ static inline void clear_bit(unsigned long nr, volatile unsigned long *addr)
: "=&r" (temp), "+m" (*m)
: "ir" (~(1UL << bit)));
} while (unlikely(!temp));
} else {
volatile unsigned long *a = addr;
unsigned long mask;
unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << bit;
raw_local_irq_save(flags);
*a &= ~mask;
raw_local_irq_restore(flags);
}
} else
__mips_clear_bit(nr, addr);
}
/*
@ -220,17 +219,8 @@ static inline void change_bit(unsigned long nr, volatile unsigned long *addr)
: "=&r" (temp), "+m" (*m)
: "ir" (1UL << bit));
} while (unlikely(!temp));
} else {
volatile unsigned long *a = addr;
unsigned long mask;
unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << bit;
raw_local_irq_save(flags);
*a ^= mask;
raw_local_irq_restore(flags);
}
} else
__mips_change_bit(nr, addr);
}
/*
@ -281,18 +271,8 @@ static inline int test_and_set_bit(unsigned long nr,
} while (unlikely(!res));
res = temp & (1UL << bit);
} else {
volatile unsigned long *a = addr;
unsigned long mask;
unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << bit;
raw_local_irq_save(flags);
res = (mask & *a);
*a |= mask;
raw_local_irq_restore(flags);
}
} else
res = __mips_test_and_set_bit(nr, addr);
smp_llsc_mb();
@ -345,18 +325,8 @@ static inline int test_and_set_bit_lock(unsigned long nr,
} while (unlikely(!res));
res = temp & (1UL << bit);
} else {
volatile unsigned long *a = addr;
unsigned long mask;
unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << bit;
raw_local_irq_save(flags);
res = (mask & *a);
*a |= mask;
raw_local_irq_restore(flags);
}
} else
res = __mips_test_and_set_bit_lock(nr, addr);
smp_llsc_mb();
@ -428,18 +398,8 @@ static inline int test_and_clear_bit(unsigned long nr,
} while (unlikely(!res));
res = temp & (1UL << bit);
} else {
volatile unsigned long *a = addr;
unsigned long mask;
unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << bit;
raw_local_irq_save(flags);
res = (mask & *a);
*a &= ~mask;
raw_local_irq_restore(flags);
}
} else
res = __mips_test_and_clear_bit(nr, addr);
smp_llsc_mb();
@ -494,18 +454,8 @@ static inline int test_and_change_bit(unsigned long nr,
} while (unlikely(!res));
res = temp & (1UL << bit);
} else {
volatile unsigned long *a = addr;
unsigned long mask;
unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << bit;
raw_local_irq_save(flags);
res = (mask & *a);
*a ^= mask;
raw_local_irq_restore(flags);
}
} else
res = __mips_test_and_change_bit(nr, addr);
smp_llsc_mb();

1
arch/mips/include/asm/io.h
View File

@ -15,6 +15,7 @@
#include <linux/compiler.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/irqflags.h>
#include <asm/addrspace.h>
#include <asm/bug.h>

2
arch/mips/lib/Makefile
View File

@ -2,7 +2,7 @@
# Makefile for MIPS-specific library files..
#
lib-y += csum_partial.o delay.o memcpy.o memset.o \
lib-y += bitops.o csum_partial.o delay.o memcpy.o memset.o \
strlen_user.o strncpy_user.o strnlen_user.o uncached.o
obj-y += iomap.o

179
arch/mips/lib/bitops.c Normal file
View File

@ -0,0 +1,179 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (c) 1994-1997, 99, 2000, 06, 07 Ralf Baechle (ralf@linux-mips.org)
* Copyright (c) 1999, 2000 Silicon Graphics, Inc.
*/
#include <linux/bitops.h>
#include <linux/irqflags.h>
#include <linux/export.h>
/**
* __mips_set_bit - Atomically set a bit in memory. This is called by
* set_bit() if it cannot find a faster solution.
* @nr: the bit to set
* @addr: the address to start counting from
*/
void __mips_set_bit(unsigned long nr, volatile unsigned long *addr)
{
volatile unsigned long *a = addr;
unsigned bit = nr & SZLONG_MASK;
unsigned long mask;
unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << bit;
raw_local_irq_save(flags);
*a |= mask;
raw_local_irq_restore(flags);
}
EXPORT_SYMBOL(__mips_set_bit);
/**
* __mips_clear_bit - Clears a bit in memory. This is called by clear_bit() if
* it cannot find a faster solution.
* @nr: Bit to clear
* @addr: Address to start counting from
*/
void __mips_clear_bit(unsigned long nr, volatile unsigned long *addr)
{
volatile unsigned long *a = addr;
unsigned bit = nr & SZLONG_MASK;
unsigned long mask;
unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << bit;
raw_local_irq_save(flags);
*a &= ~mask;
raw_local_irq_restore(flags);
}
EXPORT_SYMBOL(__mips_clear_bit);
/**
* __mips_change_bit - Toggle a bit in memory. This is called by change_bit()
* if it cannot find a faster solution.
* @nr: Bit to change
* @addr: Address to start counting from
*/
void __mips_change_bit(unsigned long nr, volatile unsigned long *addr)
{
volatile unsigned long *a = addr;
unsigned bit = nr & SZLONG_MASK;
unsigned long mask;
unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << bit;
raw_local_irq_save(flags);
*a ^= mask;
raw_local_irq_restore(flags);
}
EXPORT_SYMBOL(__mips_change_bit);
/**
* __mips_test_and_set_bit - Set a bit and return its old value. This is
* called by test_and_set_bit() if it cannot find a faster solution.
* @nr: Bit to set
* @addr: Address to count from
*/
int __mips_test_and_set_bit(unsigned long nr,
volatile unsigned long *addr)
{
volatile unsigned long *a = addr;
unsigned bit = nr & SZLONG_MASK;
unsigned long mask;
unsigned long flags;
unsigned long res;
a += nr >> SZLONG_LOG;
mask = 1UL << bit;
raw_local_irq_save(flags);
res = (mask & *a);
*a |= mask;
raw_local_irq_restore(flags);
return res;
}
EXPORT_SYMBOL(__mips_test_and_set_bit);
/**
* __mips_test_and_set_bit_lock - Set a bit and return its old value. This is
* called by test_and_set_bit_lock() if it cannot find a faster solution.
* @nr: Bit to set
* @addr: Address to count from
*/
int __mips_test_and_set_bit_lock(unsigned long nr,
volatile unsigned long *addr)
{
volatile unsigned long *a = addr;
unsigned bit = nr & SZLONG_MASK;
unsigned long mask;
unsigned long flags;
unsigned long res;
a += nr >> SZLONG_LOG;
mask = 1UL << bit;
raw_local_irq_save(flags);
res = (mask & *a);
*a |= mask;
raw_local_irq_restore(flags);
return res;
}
EXPORT_SYMBOL(__mips_test_and_set_bit_lock);
/**
* __mips_test_and_clear_bit - Clear a bit and return its old value. This is
* called by test_and_clear_bit() if it cannot find a faster solution.
* @nr: Bit to clear
* @addr: Address to count from
*/
int __mips_test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
{
volatile unsigned long *a = addr;
unsigned bit = nr & SZLONG_MASK;
unsigned long mask;
unsigned long flags;
unsigned long res;
a += nr >> SZLONG_LOG;
mask = 1UL << bit;
raw_local_irq_save(flags);
res = (mask & *a);
*a &= ~mask;
raw_local_irq_restore(flags);
return res;
}
EXPORT_SYMBOL(__mips_test_and_clear_bit);
/**
* __mips_test_and_change_bit - Change a bit and return its old value. This is
* called by test_and_change_bit() if it cannot find a faster solution.
* @nr: Bit to change
* @addr: Address to count from
*/
int __mips_test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
{
volatile unsigned long *a = addr;
unsigned bit = nr & SZLONG_MASK;
unsigned long mask;
unsigned long flags;
unsigned long res;
a += nr >> SZLONG_LOG;
mask = 1UL << bit;
raw_local_irq_save(flags);
res = (mask & *a);
*a ^= mask;
raw_local_irq_restore(flags);
return res;
}
EXPORT_SYMBOL(__mips_test_and_change_bit);