mirror of
https://github.com/FEX-Emu/linux.git
synced 2025-01-07 10:03:24 +00:00
26333576fd
Introduce test_and_set_bit_lock / clear_bit_unlock bitops with lock semantics. Convert all architectures to use the generic implementation. Signed-off-by: Nick Piggin <npiggin@suse.de> Acked-By: David Howells <dhowells@redhat.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Bryan Wu <bryan.wu@analog.com> Cc: Mikael Starvik <starvik@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Matthew Wilcox <willy@debian.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Cc: Richard Curnow <rc@rc0.org.uk> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp> Cc: Andi Kleen <ak@muc.de> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
103 lines
2.5 KiB
C
103 lines
2.5 KiB
C
/* $Id: bitops.h,v 1.39 2002/01/30 01:40:00 davem Exp $
|
|
* bitops.h: Bit string operations on the V9.
|
|
*
|
|
* Copyright 1996, 1997 David S. Miller (davem@caip.rutgers.edu)
|
|
*/
|
|
|
|
#ifndef _SPARC64_BITOPS_H
|
|
#define _SPARC64_BITOPS_H
|
|
|
|
#include <linux/compiler.h>
|
|
#include <asm/byteorder.h>
|
|
|
|
extern int test_and_set_bit(unsigned long nr, volatile unsigned long *addr);
|
|
extern int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr);
|
|
extern int test_and_change_bit(unsigned long nr, volatile unsigned long *addr);
|
|
extern void set_bit(unsigned long nr, volatile unsigned long *addr);
|
|
extern void clear_bit(unsigned long nr, volatile unsigned long *addr);
|
|
extern void change_bit(unsigned long nr, volatile unsigned long *addr);
|
|
|
|
#include <asm-generic/bitops/non-atomic.h>
|
|
|
|
#ifdef CONFIG_SMP
|
|
#define smp_mb__before_clear_bit() membar_storeload_loadload()
|
|
#define smp_mb__after_clear_bit() membar_storeload_storestore()
|
|
#else
|
|
#define smp_mb__before_clear_bit() barrier()
|
|
#define smp_mb__after_clear_bit() barrier()
|
|
#endif
|
|
|
|
#include <asm-generic/bitops/ffz.h>
|
|
#include <asm-generic/bitops/__ffs.h>
|
|
#include <asm-generic/bitops/fls.h>
|
|
#include <asm-generic/bitops/fls64.h>
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <asm-generic/bitops/sched.h>
|
|
#include <asm-generic/bitops/ffs.h>
|
|
|
|
/*
|
|
* hweightN: returns the hamming weight (i.e. the number
|
|
* of bits set) of a N-bit word
|
|
*/
|
|
|
|
#ifdef ULTRA_HAS_POPULATION_COUNT
|
|
|
|
static inline unsigned int hweight64(unsigned long w)
|
|
{
|
|
unsigned int res;
|
|
|
|
__asm__ ("popc %1,%0" : "=r" (res) : "r" (w));
|
|
return res;
|
|
}
|
|
|
|
static inline unsigned int hweight32(unsigned int w)
|
|
{
|
|
unsigned int res;
|
|
|
|
__asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffffffff));
|
|
return res;
|
|
}
|
|
|
|
static inline unsigned int hweight16(unsigned int w)
|
|
{
|
|
unsigned int res;
|
|
|
|
__asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffff));
|
|
return res;
|
|
}
|
|
|
|
static inline unsigned int hweight8(unsigned int w)
|
|
{
|
|
unsigned int res;
|
|
|
|
__asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xff));
|
|
return res;
|
|
}
|
|
|
|
#else
|
|
|
|
#include <asm-generic/bitops/hweight.h>
|
|
|
|
#endif
|
|
#include <asm-generic/bitops/lock.h>
|
|
#endif /* __KERNEL__ */
|
|
|
|
#include <asm-generic/bitops/find.h>
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <asm-generic/bitops/ext2-non-atomic.h>
|
|
|
|
#define ext2_set_bit_atomic(lock,nr,addr) \
|
|
test_and_set_bit((nr) ^ 0x38,(unsigned long *)(addr))
|
|
#define ext2_clear_bit_atomic(lock,nr,addr) \
|
|
test_and_clear_bit((nr) ^ 0x38,(unsigned long *)(addr))
|
|
|
|
#include <asm-generic/bitops/minix.h>
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* defined(_SPARC64_BITOPS_H) */
|