diff options
Diffstat (limited to 'mm/percpu.c')
| -rw-r--r-- | mm/percpu.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/mm/percpu.c b/mm/percpu.c index b3d0bcff8c7..3f9f182f9b4 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -1004,7 +1004,7 @@ static struct pcpu_chunk *alloc_pcpu_chunk(void) chunk->map_alloc = PCPU_DFL_MAP_ALLOC; chunk->map[chunk->map_used++] = pcpu_unit_size; - chunk->vm = get_vm_area(pcpu_chunk_size, GFP_KERNEL); + chunk->vm = get_vm_area(pcpu_chunk_size, VM_ALLOC); if (!chunk->vm) { free_pcpu_chunk(chunk); return NULL; @@ -1325,7 +1325,7 @@ size_t __init pcpu_setup_first_chunk(size_t static_size, size_t reserved_size, int *identity_map; /* #units == #cpus, identity mapped */ - identity_map = alloc_bootmem(num_possible_cpus() * + identity_map = alloc_bootmem(nr_cpu_ids * sizeof(identity_map[0])); for_each_possible_cpu(cpu) @@ -1333,7 +1333,7 @@ size_t __init pcpu_setup_first_chunk(size_t static_size, size_t reserved_size, pcpu_first_unit_cpu = 0; pcpu_last_unit_cpu = pcpu_nr_units - 1; - pcpu_nr_units = num_possible_cpus(); + pcpu_nr_units = nr_cpu_ids; pcpu_unit_map = identity_map; } @@ -1464,7 +1464,7 @@ ssize_t __init pcpu_embed_first_chunk(size_t static_size, size_t reserved_size, size_sum = pcpu_calc_fc_sizes(static_size, reserved_size, &dyn_size); unit_size = max_t(size_t, size_sum, PCPU_MIN_UNIT_SIZE); - chunk_size = unit_size * num_possible_cpus(); + chunk_size = unit_size * nr_cpu_ids; base = __alloc_bootmem_nopanic(chunk_size, PAGE_SIZE, __pa(MAX_DMA_ADDRESS)); @@ -1475,11 +1475,15 @@ ssize_t __init pcpu_embed_first_chunk(size_t static_size, size_t reserved_size, } /* return the leftover and copy */ - for_each_possible_cpu(cpu) { + for (cpu = 0; cpu < nr_cpu_ids; cpu++) { void *ptr = base + cpu * unit_size; - free_bootmem(__pa(ptr + size_sum), unit_size - size_sum); - memcpy(ptr, __per_cpu_load, static_size); + if (cpu_possible(cpu)) { + free_bootmem(__pa(ptr + size_sum), + unit_size - size_sum); + memcpy(ptr, __per_cpu_load, static_size); + } else + free_bootmem(__pa(ptr), unit_size); } /* we're ready, commit */ @@ -1525,8 +1529,7 @@ ssize_t __init pcpu_4k_first_chunk(size_t static_size, size_t reserved_size, PCPU_MIN_UNIT_SIZE)); /* unaligned allocations can't be freed, round up to page size */ - pages_size = PFN_ALIGN(unit_pages * num_possible_cpus() * - sizeof(pages[0])); + pages_size = PFN_ALIGN(unit_pages * nr_cpu_ids * sizeof(pages[0])); pages = alloc_bootmem(pages_size); /* allocate pages */ @@ -1546,7 +1549,7 @@ ssize_t __init pcpu_4k_first_chunk(size_t static_size, size_t reserved_size, /* allocate vm area, map the pages and copy static data */ vm.flags = VM_ALLOC; - vm.size = num_possible_cpus() * unit_pages << PAGE_SHIFT; + vm.size = nr_cpu_ids * unit_pages << PAGE_SHIFT; vm_area_register_early(&vm, PAGE_SIZE); for_each_possible_cpu(cpu) { |