diff options
Diffstat (limited to 'arch')
-rw-r--r-- | arch/ia64/mm/contig.c | 74 |
1 files changed, 41 insertions, 33 deletions
diff --git a/arch/ia64/mm/contig.c b/arch/ia64/mm/contig.c index d3c538be466c..7e9c275ea148 100644 --- a/arch/ia64/mm/contig.c +++ b/arch/ia64/mm/contig.c | |||
@@ -146,6 +146,46 @@ find_bootmap_location (unsigned long start, unsigned long end, void *arg) | |||
146 | return 0; | 146 | return 0; |
147 | } | 147 | } |
148 | 148 | ||
149 | #ifdef CONFIG_SMP | ||
150 | static void *cpu_data; | ||
151 | /** | ||
152 | * per_cpu_init - setup per-cpu variables | ||
153 | * | ||
154 | * Allocate and setup per-cpu data areas. | ||
155 | */ | ||
156 | void * __cpuinit | ||
157 | per_cpu_init (void) | ||
158 | { | ||
159 | int cpu; | ||
160 | static int first_time=1; | ||
161 | |||
162 | /* | ||
163 | * get_free_pages() cannot be used before cpu_init() done. BSP | ||
164 | * allocates "NR_CPUS" pages for all CPUs to avoid that AP calls | ||
165 | * get_zeroed_page(). | ||
166 | */ | ||
167 | if (first_time) { | ||
168 | first_time=0; | ||
169 | for (cpu = 0; cpu < NR_CPUS; cpu++) { | ||
170 | memcpy(cpu_data, __phys_per_cpu_start, __per_cpu_end - __per_cpu_start); | ||
171 | __per_cpu_offset[cpu] = (char *) cpu_data - __per_cpu_start; | ||
172 | cpu_data += PERCPU_PAGE_SIZE; | ||
173 | per_cpu(local_per_cpu_offset, cpu) = __per_cpu_offset[cpu]; | ||
174 | } | ||
175 | } | ||
176 | return __per_cpu_start + __per_cpu_offset[smp_processor_id()]; | ||
177 | } | ||
178 | |||
179 | static inline void | ||
180 | alloc_per_cpu_data(void) | ||
181 | { | ||
182 | cpu_data = __alloc_bootmem(PERCPU_PAGE_SIZE * NR_CPUS, | ||
183 | PERCPU_PAGE_SIZE, __pa(MAX_DMA_ADDRESS)); | ||
184 | } | ||
185 | #else | ||
186 | #define alloc_per_cpu_data() do { } while (0) | ||
187 | #endif /* CONFIG_SMP */ | ||
188 | |||
149 | /** | 189 | /** |
150 | * find_memory - setup memory map | 190 | * find_memory - setup memory map |
151 | * | 191 | * |
@@ -182,41 +222,9 @@ find_memory (void) | |||
182 | 222 | ||
183 | find_initrd(); | 223 | find_initrd(); |
184 | 224 | ||
225 | alloc_per_cpu_data(); | ||
185 | } | 226 | } |
186 | 227 | ||
187 | #ifdef CONFIG_SMP | ||
188 | /** | ||
189 | * per_cpu_init - setup per-cpu variables | ||
190 | * | ||
191 | * Allocate and setup per-cpu data areas. | ||
192 | */ | ||
193 | void * __cpuinit | ||
194 | per_cpu_init (void) | ||
195 | { | ||
196 | void *cpu_data; | ||
197 | int cpu; | ||
198 | static int first_time=1; | ||
199 | |||
200 | /* | ||
201 | * get_free_pages() cannot be used before cpu_init() done. BSP | ||
202 | * allocates "NR_CPUS" pages for all CPUs to avoid that AP calls | ||
203 | * get_zeroed_page(). | ||
204 | */ | ||
205 | if (first_time) { | ||
206 | first_time=0; | ||
207 | cpu_data = __alloc_bootmem(PERCPU_PAGE_SIZE * NR_CPUS, | ||
208 | PERCPU_PAGE_SIZE, __pa(MAX_DMA_ADDRESS)); | ||
209 | for (cpu = 0; cpu < NR_CPUS; cpu++) { | ||
210 | memcpy(cpu_data, __phys_per_cpu_start, __per_cpu_end - __per_cpu_start); | ||
211 | __per_cpu_offset[cpu] = (char *) cpu_data - __per_cpu_start; | ||
212 | cpu_data += PERCPU_PAGE_SIZE; | ||
213 | per_cpu(local_per_cpu_offset, cpu) = __per_cpu_offset[cpu]; | ||
214 | } | ||
215 | } | ||
216 | return __per_cpu_start + __per_cpu_offset[smp_processor_id()]; | ||
217 | } | ||
218 | #endif /* CONFIG_SMP */ | ||
219 | |||
220 | static int | 228 | static int |
221 | count_pages (u64 start, u64 end, void *arg) | 229 | count_pages (u64 start, u64 end, void *arg) |
222 | { | 230 | { |