diff options
| author | Paul Mundt <lethal@linux-sh.org> | 2012-05-10 11:51:07 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2012-05-10 11:51:07 +0900 |
| commit | 15f99cbd071aa402e113d342448603344a337046 (patch) | |
| tree | 56f98892d1bd38029988eb8931e2321ef7e79aa0 /arch/x86/kernel/setup_percpu.c | |
| parent | b2212ea41dacda8cce0e7681a3a6ccc76c63802e (diff) | |
| parent | 41797f75486d8ca3b98d7658c2a506ac7879a8e5 (diff) | |
Merge branch 'sh/rsk-updates' into sh-latest
Conflicts:
arch/sh/Kconfig
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/x86/kernel/setup_percpu.c')
| -rw-r--r-- | arch/x86/kernel/setup_percpu.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c index 71f4727da37..5a98aa27218 100644 --- a/arch/x86/kernel/setup_percpu.c +++ b/arch/x86/kernel/setup_percpu.c @@ -185,10 +185,22 @@ void __init setup_per_cpu_areas(void) #endif rc = -EINVAL; if (pcpu_chosen_fc != PCPU_FC_PAGE) { - const size_t atom_size = cpu_has_pse ? PMD_SIZE : PAGE_SIZE; const size_t dyn_size = PERCPU_MODULE_RESERVE + PERCPU_DYNAMIC_RESERVE - PERCPU_FIRST_CHUNK_RESERVE; + size_t atom_size; + /* + * On 64bit, use PMD_SIZE for atom_size so that embedded + * percpu areas are aligned to PMD. This, in the future, + * can also allow using PMD mappings in vmalloc area. Use + * PAGE_SIZE on 32bit as vmalloc space is highly contended + * and large vmalloc area allocs can easily fail. + */ +#ifdef CONFIG_X86_64 + atom_size = PMD_SIZE; +#else + atom_size = PAGE_SIZE; +#endif rc = pcpu_embed_first_chunk(PERCPU_FIRST_CHUNK_RESERVE, dyn_size, atom_size, pcpu_cpu_distance, |