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author | Tejun Heo <tj@kernel.org> | 2009-08-14 15:00:50 +0900 |
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committer | Tejun Heo <tj@kernel.org> | 2009-08-14 15:00:50 +0900 |
commit | f58dc01ba2ca9fe3ab2ba4ca43d9c8a735cf62d8 (patch) | |
tree | 9eb76a0d6aa34e56f8650fe98a5ce26891a522ab /include/linux/percpu.h | |
parent | 08fc45806103e59a37418e84719b878f9bb32540 (diff) | |
download | linux-stable-f58dc01ba2ca9fe3ab2ba4ca43d9c8a735cf62d8.tar.gz linux-stable-f58dc01ba2ca9fe3ab2ba4ca43d9c8a735cf62d8.tar.bz2 linux-stable-f58dc01ba2ca9fe3ab2ba4ca43d9c8a735cf62d8.zip |
percpu: generalize first chunk allocator selection
Now that all first chunk allocators are in mm/percpu.c, it makes sense
to make generalize percpu_alloc kernel parameter. Define PCPU_FC_*
and set pcpu_chosen_fc using early_param() in mm/percpu.c. Arch code
can use the set value to determine which first chunk allocator to use.
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'include/linux/percpu.h')
-rw-r--r-- | include/linux/percpu.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/percpu.h b/include/linux/percpu.h index e26788e0da4a..9be05cbe5ee0 100644 --- a/include/linux/percpu.h +++ b/include/linux/percpu.h @@ -59,6 +59,18 @@ extern void *pcpu_base_addr; extern const int *pcpu_unit_map; +enum pcpu_fc { + PCPU_FC_AUTO, + PCPU_FC_EMBED, + PCPU_FC_PAGE, + PCPU_FC_LPAGE, + + PCPU_FC_NR, +}; +extern const char *pcpu_fc_names[PCPU_FC_NR]; + +extern enum pcpu_fc pcpu_chosen_fc; + 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); |