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raspberrypi-kernel
提交 756cca61 编写于 作者: R Ralf Baechle
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MIPS: Microoptimize arch_{read,write}_lock 

Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
上级 4bafad92
隐藏空白更改
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Showing with 11 addition and 11 deletion
arch/mips/include/asm/spinlock.h
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...@@ -245,16 +245,16 @@ static inline void arch_read_lock(arch_rwlock_t *rw) ...@@ -245,16 +245,16 @@ static inline void arch_read_lock(arch_rwlock_t *rw)
__asm__ __volatile__( __asm__ __volatile__(
" .set noreorder # arch_read_lock \n" " .set noreorder # arch_read_lock \n"
"1: ll %1, %2 \n" "1: ll %1, %2 \n"
" bltz %1, 2f \n" " bltz %1, 3f \n"
" addu %1, 1 \n" " addu %1, 1 \n"
" sc %1, %0 \n" "2: sc %1, %0 \n"
" beqz %1, 1b \n" " beqz %1, 1b \n"
" nop \n" " nop \n"
" .subsection 2 \n" " .subsection 2 \n"
"2: ll %1, %2 \n" "3: ll %1, %2 \n"
" bltz %1, 2b \n" " bltz %1, 3b \n"
" addu %1, 1 \n" " addu %1, 1 \n"
" b 1b \n" " b 2b \n"
" nop \n" " nop \n"
" .previous \n" " .previous \n"
" .set reorder \n" " .set reorder \n"
...@@ -324,16 +324,16 @@ static inline void arch_write_lock(arch_rwlock_t *rw) ...@@ -324,16 +324,16 @@ static inline void arch_write_lock(arch_rwlock_t *rw)
__asm__ __volatile__( __asm__ __volatile__(
" .set noreorder # arch_write_lock \n" " .set noreorder # arch_write_lock \n"
"1: ll %1, %2 \n" "1: ll %1, %2 \n"
" bnez %1, 2f \n" " bnez %1, 3f \n"
" lui %1, 0x8000 \n" " lui %1, 0x8000 \n"
" sc %1, %0 \n" "2: sc %1, %0 \n"
" beqz %1, 2f \n" " beqz %1, 3f \n"
" nop \n" " nop \n"
" .subsection 2 \n" " .subsection 2 \n"
"2: ll %1, %2 \n" "3: ll %1, %2 \n"
" bnez %1, 2b \n" " bnez %1, 3b \n"
" lui %1, 0x8000 \n" " lui %1, 0x8000 \n"
" b 1b \n" " b 2b \n"
" nop \n" " nop \n"
" .previous \n" " .previous \n"
" .set reorder \n" " .set reorder \n"
......
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