system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-09-29 16:00:27 +00:00
Code Issues Packages Projects Releases Wiki Activity

rt2x00: Make rt2x00_set/get_field macros

Browse source 
The rt2x00_set_field functions are very often used,
but GCC is better able to optimize them when they
are macros instead of static inline functions.

After changing it to macro's each rt2x00 driver will
loose about ~3500 bytes in size.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Ivo van Doorn 2008-06-03 20:29:43 +02:00 committed by John W. Linville
parent 70249816a8
commit c483bb4cbd
1 changed files with 26 additions and 37 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

63
drivers/net/wireless/rt2x00/rt2x00reg.h
View file

@ -198,46 +198,35 @@ struct rt2x00_field32 {
}; \
})
static inline void rt2x00_set_field32(u32 *reg,
const struct rt2x00_field32 field,
const u32 value)
{
*reg &= ~(field.bit_mask);
*reg |= (value << field.bit_offset) & field.bit_mask;
}
#define SET_FIELD(__reg, __type, __field, __value)\
({ \
typecheck(__type, __field); \
*(__reg) &= ~((__field).bit_mask); \
*(__reg) |= ((__value) << \
((__field).bit_offset)) & \
((__field).bit_mask); \
})
static inline u32 rt2x00_get_field32(const u32 reg,
const struct rt2x00_field32 field)
{
return (reg & field.bit_mask) >> field.bit_offset;
}
#define GET_FIELD(__reg, __type, __field) \
({ \
typecheck(__type, __field); \
((__reg) & ((__field).bit_mask)) >> \
((__field).bit_offset); \
})
static inline void rt2x00_set_field16(u16 *reg,
const struct rt2x00_field16 field,
const u16 value)
{
*reg &= ~(field.bit_mask);
*reg |= (value << field.bit_offset) & field.bit_mask;
}
#define rt2x00_set_field32(__reg, __field, __value) \
SET_FIELD(__reg, struct rt2x00_field32, __field, __value)
#define rt2x00_get_field32(__reg, __field) \
GET_FIELD(__reg, struct rt2x00_field32, __field)
static inline u16 rt2x00_get_field16(const u16 reg,
const struct rt2x00_field16 field)
{
return (reg & field.bit_mask) >> field.bit_offset;
}
#define rt2x00_set_field16(__reg, __field, __value) \
SET_FIELD(__reg, struct rt2x00_field16, __field, __value)
#define rt2x00_get_field16(__reg, __field) \
GET_FIELD(__reg, struct rt2x00_field16, __field)
static inline void rt2x00_set_field8(u8 *reg,
const struct rt2x00_field8 field,
const u8 value)
{
*reg &= ~(field.bit_mask);
*reg |= (value << field.bit_offset) & field.bit_mask;
}
static inline u8 rt2x00_get_field8(const u8 reg,
const struct rt2x00_field8 field)
{
return (reg & field.bit_mask) >> field.bit_offset;
}
#define rt2x00_set_field8(__reg, __field, __value) \
SET_FIELD(__reg, struct rt2x00_field8, __field, __value)
#define rt2x00_get_field8(__reg, __field) \
GET_FIELD(__reg, struct rt2x00_field8, __field)
#endif /* RT2X00REG_H */