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| author | Tejun Heo <tj@kernel.org> | 2009-07-04 08:10:59 +0900 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2009-07-04 08:10:59 +0900 |
| commit | 8c4bfc6e8801616ab2e01c38140b2159b388d2ff (patch) | |
| tree | e29e8bbfae362362554b870371a6187b41f92d82 /include/linux | |
| parent | 8f05a6a65d944f2fed4eb384fb58aa8c8e5a9bab (diff) | |
| download | kernel_samsung_smdk4412-8c4bfc6e8801616ab2e01c38140b2159b388d2ff.zip kernel_samsung_smdk4412-8c4bfc6e8801616ab2e01c38140b2159b388d2ff.tar.gz kernel_samsung_smdk4412-8c4bfc6e8801616ab2e01c38140b2159b388d2ff.tar.bz2 | |
x86,percpu: generalize lpage first chunk allocator
Generalize and move x86 setup_pcpu_lpage() into
pcpu_lpage_first_chunk(). setup_pcpu_lpage() now is a simple wrapper
around the generalized version. Other than taking size parameters and
using arch supplied callbacks to allocate/free/map memory,
pcpu_lpage_first_chunk() is identical to the original implementation.
This simplifies arch code and will help converting more archs to
dynamic percpu allocator.
While at it, factor out pcpu_calc_fc_sizes() which is common to
pcpu_embed_first_chunk() and pcpu_lpage_first_chunk().
[ Impact: code reorganization and generalization ]
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/percpu.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/linux/percpu.h b/include/linux/percpu.h index 41b5bfa..9f6bfd7 100644 --- a/include/linux/percpu.h +++ b/include/linux/percpu.h @@ -62,6 +62,7 @@ typedef struct page * (*pcpu_get_page_fn_t)(unsigned int cpu, int pageno); typedef void * (*pcpu_fc_alloc_fn_t)(unsigned int cpu, size_t size); typedef void (*pcpu_fc_free_fn_t)(void *ptr, size_t size); typedef void (*pcpu_fc_populate_pte_fn_t)(unsigned long addr); +typedef void (*pcpu_fc_map_fn_t)(void *ptr, size_t size, void *addr); extern size_t __init pcpu_setup_first_chunk(pcpu_get_page_fn_t get_page_fn, size_t static_size, size_t reserved_size, @@ -79,6 +80,32 @@ extern ssize_t __init pcpu_4k_first_chunk( pcpu_fc_free_fn_t free_fn, pcpu_fc_populate_pte_fn_t populate_pte_fn); +#ifdef CONFIG_NEED_MULTIPLE_NODES +extern ssize_t __init pcpu_lpage_first_chunk( + size_t static_size, size_t reserved_size, + ssize_t dyn_size, size_t lpage_size, + pcpu_fc_alloc_fn_t alloc_fn, + pcpu_fc_free_fn_t free_fn, + pcpu_fc_map_fn_t map_fn); + +extern void *pcpu_lpage_remapped(void *kaddr); +#else +static inline ssize_t __init pcpu_lpage_first_chunk( + size_t static_size, size_t reserved_size, + ssize_t dyn_size, size_t lpage_size, + pcpu_fc_alloc_fn_t alloc_fn, + pcpu_fc_free_fn_t free_fn, + pcpu_fc_map_fn_t map_fn) +{ + return -EINVAL; +} + +static inline void *pcpu_lpage_remapped(void *kaddr) +{ + return NULL; +} +#endif + /* * Use this to get to a cpu's version of the per-cpu object * dynamically allocated. Non-atomic access to the current CPU's |