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authorTejun Heo <tj@kernel.org>2009-02-24 12:32:28 +0900
committerTejun Heo <tj@kernel.org>2009-02-24 14:24:30 +0900
commit40150d37be7f7949b2ec07d511244da856647d84 (patch)
tree6edc4e8d0a0302328f5e65ec6378b703cb6c2e35 /mm/percpu.c
parent8ac837571491e239e64bd87863c1679d8002e8a2 (diff)
downloadvexpress-lsk-40150d37be7f7949b2ec07d511244da856647d84.tar.gz
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.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/mm/percpu.c b/mm/percpu.c
index 9ac01980cce..5954e7a9eb1 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)