bitops.h (27eb2c4b3d3e13f376a359e293c212a2e9407af5) bitops.h (e22a22740c1ac23aaa10835f026b3549ee3e4e75)
1/*
2 * PowerPC atomic bit operations.
3 *
4 * Merged version by David Gibson <david@gibson.dropbear.id.au>.
5 * Based on ppc64 versions by: Dave Engebretsen, Todd Inglett, Don
6 * Reed, Pat McCarthy, Peter Bergner, Anton Blanchard. They
7 * originally took it from the ppc32 code.
8 *

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41#ifndef _LINUX_BITOPS_H
42#error only <linux/bitops.h> can be included directly
43#endif
44
45#include <linux/compiler.h>
46#include <asm/asm-compat.h>
47#include <asm/synch.h>
48
1/*
2 * PowerPC atomic bit operations.
3 *
4 * Merged version by David Gibson <david@gibson.dropbear.id.au>.
5 * Based on ppc64 versions by: Dave Engebretsen, Todd Inglett, Don
6 * Reed, Pat McCarthy, Peter Bergner, Anton Blanchard. They
7 * originally took it from the ppc32 code.
8 *

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41#ifndef _LINUX_BITOPS_H
42#error only <linux/bitops.h> can be included directly
43#endif
44
45#include <linux/compiler.h>
46#include <asm/asm-compat.h>
47#include <asm/synch.h>
48
49/* PPC bit number conversion */
50#define PPC_BITLSHIFT(be) (BITS_PER_LONG - 1 - (be))
51#define PPC_BIT(bit) (1UL << PPC_BITLSHIFT(bit))
52#define PPC_BITMASK(bs, be) ((PPC_BIT(bs) - PPC_BIT(be)) | PPC_BIT(bs))
53
49/*
50 * clear_bit doesn't imply a memory barrier
51 */
52#define smp_mb__before_clear_bit() smp_mb()
53#define smp_mb__after_clear_bit() smp_mb()
54
55/* Macro for generating the ***_bits() functions */
56#define DEFINE_BITOP(fn, op, prefix) \

--- 232 unchanged lines hidden --- 		54/*
55 * clear_bit doesn't imply a memory barrier
56 */
57#define smp_mb__before_clear_bit() smp_mb()
58#define smp_mb__after_clear_bit() smp_mb()
59
60/* Macro for generating the ***_bits() functions */
61#define DEFINE_BITOP(fn, op, prefix) \

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