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authorTejun Heo <tj@kernel.org>2009-07-03 19:10:59 -0400
committerTejun Heo <tj@kernel.org>2009-07-03 19:10:59 -0400
commitd4b95f80399471e4bce5e992700ff7f06ef91f6a (patch)
treea7b97c549629ea1032c36a41048ea847a20b8d27 /include/linux/percpu.h
parent788e5abc5441e9046dd91c995c6f1f75bbd144bf (diff)
x86,percpu: generalize 4k first chunk allocator
Generalize and move x86 setup_pcpu_4k() into pcpu_4k_first_chunk(). setup_pcpu_4k() now is a simple wrapper around the generalized version. Other than taking size parameters and using arch supplied callbacks to allocate/free memory, pcpu_4k_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, s/pcpu_populate_pte_fn_t/pcpu_fc_populate_pte_fn_t/ for consistency. [ Impact: code reorganization and generalization ] Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/percpu.h')
-rw-r--r--include/linux/percpu.h12
1 files changed, 10 insertions, 2 deletions
diff --git a/include/linux/percpu.h b/include/linux/percpu.h
index 83bff053bd1c..41b5bfab4195 100644
--- a/include/linux/percpu.h
+++ b/include/linux/percpu.h
@@ -59,18 +59,26 @@
59extern void *pcpu_base_addr; 59extern void *pcpu_base_addr;
60 60
61typedef struct page * (*pcpu_get_page_fn_t)(unsigned int cpu, int pageno); 61typedef struct page * (*pcpu_get_page_fn_t)(unsigned int cpu, int pageno);
62typedef void (*pcpu_populate_pte_fn_t)(unsigned long addr); 62typedef void * (*pcpu_fc_alloc_fn_t)(unsigned int cpu, size_t size);
63typedef void (*pcpu_fc_free_fn_t)(void *ptr, size_t size);
64typedef void (*pcpu_fc_populate_pte_fn_t)(unsigned long addr);
63 65
64extern size_t __init pcpu_setup_first_chunk(pcpu_get_page_fn_t get_page_fn, 66extern size_t __init pcpu_setup_first_chunk(pcpu_get_page_fn_t get_page_fn,
65 size_t static_size, size_t reserved_size, 67 size_t static_size, size_t reserved_size,
66 ssize_t dyn_size, ssize_t unit_size, 68 ssize_t dyn_size, ssize_t unit_size,
67 void *base_addr, 69 void *base_addr,
68 pcpu_populate_pte_fn_t populate_pte_fn); 70 pcpu_fc_populate_pte_fn_t populate_pte_fn);
69 71
70extern ssize_t __init pcpu_embed_first_chunk( 72extern ssize_t __init pcpu_embed_first_chunk(
71 size_t static_size, size_t reserved_size, 73 size_t static_size, size_t reserved_size,
72 ssize_t dyn_size); 74 ssize_t dyn_size);
73 75
76extern ssize_t __init pcpu_4k_first_chunk(
77 size_t static_size, size_t reserved_size,
78 pcpu_fc_alloc_fn_t alloc_fn,
79 pcpu_fc_free_fn_t free_fn,
80 pcpu_fc_populate_pte_fn_t populate_pte_fn);
81
74/* 82/*
75 * Use this to get to a cpu's version of the per-cpu object 83 * Use this to get to a cpu's version of the per-cpu object
76 * dynamically allocated. Non-atomic access to the current CPU's 84 * dynamically allocated. Non-atomic access to the current CPU's