diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/percpu.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/mm/percpu.c b/mm/percpu.c index f921fdfb543..bb4be7435ce 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -1650,6 +1650,16 @@ int __init pcpu_embed_first_chunk(size_t reserved_size, size_t dyn_size, areas[group] = ptr; base = min(ptr, base); + } + + /* + * Copy data and free unused parts. This should happen after all + * allocations are complete; otherwise, we may end up with + * overlapping groups. + */ + for (group = 0; group < ai->nr_groups; group++) { + struct pcpu_group_info *gi = &ai->groups[group]; + void *ptr = areas[group]; for (i = 0; i < gi->nr_units; i++, ptr += ai->unit_size) { if (gi->cpu_map[i] == NR_CPUS) { @@ -1885,6 +1895,8 @@ void __init setup_per_cpu_areas(void) fc = __alloc_bootmem(unit_size, PAGE_SIZE, __pa(MAX_DMA_ADDRESS)); if (!ai || !fc) panic("Failed to allocate memory for percpu areas."); + /* kmemleak tracks the percpu allocations separately */ + kmemleak_free(fc); ai->dyn_size = unit_size; ai->unit_size = unit_size; |