diff options
Diffstat (limited to 'arch/x86/include/asm/local.h')
-rw-r--r-- | arch/x86/include/asm/local.h | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/arch/x86/include/asm/local.h b/arch/x86/include/asm/local.h index 47b9b6f19057..2e9972468a5d 100644 --- a/arch/x86/include/asm/local.h +++ b/arch/x86/include/asm/local.h | |||
@@ -195,41 +195,4 @@ static inline long local_sub_return(long i, local_t *l) | |||
195 | #define __local_add(i, l) local_add((i), (l)) | 195 | #define __local_add(i, l) local_add((i), (l)) |
196 | #define __local_sub(i, l) local_sub((i), (l)) | 196 | #define __local_sub(i, l) local_sub((i), (l)) |
197 | 197 | ||
198 | /* Use these for per-cpu local_t variables: on some archs they are | ||
199 | * much more efficient than these naive implementations. Note they take | ||
200 | * a variable, not an address. | ||
201 | * | ||
202 | * X86_64: This could be done better if we moved the per cpu data directly | ||
203 | * after GS. | ||
204 | */ | ||
205 | |||
206 | /* Need to disable preemption for the cpu local counters otherwise we could | ||
207 | still access a variable of a previous CPU in a non atomic way. */ | ||
208 | #define cpu_local_wrap_v(l) \ | ||
209 | ({ \ | ||
210 | local_t res__; \ | ||
211 | preempt_disable(); \ | ||
212 | res__ = (l); \ | ||
213 | preempt_enable(); \ | ||
214 | res__; \ | ||
215 | }) | ||
216 | #define cpu_local_wrap(l) \ | ||
217 | ({ \ | ||
218 | preempt_disable(); \ | ||
219 | (l); \ | ||
220 | preempt_enable(); \ | ||
221 | }) \ | ||
222 | |||
223 | #define cpu_local_read(l) cpu_local_wrap_v(local_read(&__get_cpu_var((l)))) | ||
224 | #define cpu_local_set(l, i) cpu_local_wrap(local_set(&__get_cpu_var((l)), (i))) | ||
225 | #define cpu_local_inc(l) cpu_local_wrap(local_inc(&__get_cpu_var((l)))) | ||
226 | #define cpu_local_dec(l) cpu_local_wrap(local_dec(&__get_cpu_var((l)))) | ||
227 | #define cpu_local_add(i, l) cpu_local_wrap(local_add((i), &__get_cpu_var((l)))) | ||
228 | #define cpu_local_sub(i, l) cpu_local_wrap(local_sub((i), &__get_cpu_var((l)))) | ||
229 | |||
230 | #define __cpu_local_inc(l) cpu_local_inc((l)) | ||
231 | #define __cpu_local_dec(l) cpu_local_dec((l)) | ||
232 | #define __cpu_local_add(i, l) cpu_local_add((i), (l)) | ||
233 | #define __cpu_local_sub(i, l) cpu_local_sub((i), (l)) | ||
234 | |||
235 | #endif /* _ASM_X86_LOCAL_H */ | 198 | #endif /* _ASM_X86_LOCAL_H */ |