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| author | Tejun Heo <tj@kernel.org> | 2009-02-24 12:32:28 +0900 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2009-02-24 14:24:30 +0900 |
| commit | 40150d37be7f7949b2ec07d511244da856647d84 (patch) | |
| tree | 6edc4e8d0a0302328f5e65ec6378b703cb6c2e35 /mm/percpu.c | |
| parent | 8ac837571491e239e64bd87863c1679d8002e8a2 (diff) | |
| download | lwn-40150d37be7f7949b2ec07d511244da856647d84.tar.gz lwn-40150d37be7f7949b2ec07d511244da856647d84.zip | |
percpu: add __read_mostly to variables which are mostly read only
Most global variables in percpu allocator are initialized during boot
and read only from that point on. Add __read_mostly as per Rusty's
suggestion.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'mm/percpu.c')
| -rw-r--r-- | mm/percpu.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/mm/percpu.c b/mm/percpu.c index 9ac01980cce0..5954e7a9eb1e 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -83,18 +83,18 @@ struct pcpu_chunk { struct page *page[]; /* #cpus * UNIT_PAGES */ }; -static int pcpu_unit_pages; -static int pcpu_unit_size; -static int pcpu_chunk_size; -static int pcpu_nr_slots; -static size_t pcpu_chunk_struct_size; +static int pcpu_unit_pages __read_mostly; +static int pcpu_unit_size __read_mostly; +static int pcpu_chunk_size __read_mostly; +static int pcpu_nr_slots __read_mostly; +static size_t pcpu_chunk_struct_size __read_mostly; /* the address of the first chunk which starts with the kernel static area */ -void *pcpu_base_addr; +void *pcpu_base_addr __read_mostly; EXPORT_SYMBOL_GPL(pcpu_base_addr); /* the size of kernel static area */ -static int pcpu_static_size; +static int pcpu_static_size __read_mostly; /* * One mutex to rule them all. @@ -112,7 +112,7 @@ static int pcpu_static_size; */ static DEFINE_MUTEX(pcpu_mutex); -static struct list_head *pcpu_slot; /* chunk list slots */ +static struct list_head *pcpu_slot __read_mostly; /* chunk list slots */ static struct rb_root pcpu_addr_root = RB_ROOT; /* chunks by address */ static int __pcpu_size_to_slot(int size) |