From 40150d37be7f7949b2ec07d511244da856647d84 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 24 Feb 2009 12:32:28 +0900 Subject: 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 Cc: Rusty Russell --- mm/percpu.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'mm') 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) -- cgit v1.2.3