path: root/mm
diff options
authorRasmus Villemoes <linux@rasmusvillemoes.dk>2015-02-12 15:00:06 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-12 18:54:11 -0800
commit061f67bc4d053e03970a268fca99a55b6859f301 (patch)
treeb49640e6d1ed55abffa5b178884556dc1305f1cf /mm
parentfc5199d1a9c9ed14e22651d0fd3b10c79e7e1f6d (diff)
mm/page_alloc.c: pull out init code from build_all_zonelists
Pulling the code protected by if (system_state == SYSTEM_BOOTING) into its own helper allows us to shrink .text a little. This relies on build_all_zonelists already having a __ref annotation. Add a comment explaining why so one doesn't have to track it down through git log. The real saving comes in 3/5, ("mm/mm_init.c: Mark mminit_verify_zonelist as __init"), where we save about 400 bytes Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Rik van Riel <riel@redhat.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: David Rientjes <rientjes@google.com> Cc: Vishnu Pratap Singh <vishnu.ps@samsung.com> Cc: Pintu Kumar <pintu.k@samsung.com> Cc: Michal Nazarewicz <mina86@mina86.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Li Zefan <lizefan@huawei.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
1 files changed, 14 insertions, 3 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 8d52ab18fe0d..375327b8e932 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3871,18 +3871,29 @@ static int __build_all_zonelists(void *data)
return 0;
+static noinline void __init
+ __build_all_zonelists(NULL);
+ mminit_verify_zonelist();
+ cpuset_init_current_mems_allowed();
* Called with zonelists_mutex held always
* unless system_state == SYSTEM_BOOTING.
+ *
+ * __ref due to (1) call of __meminit annotated setup_zone_pageset
+ * [we're only called with non-NULL zone through __meminit paths] and
+ * (2) call of __init annotated helper build_all_zonelists_init
+ * [protected by SYSTEM_BOOTING].
void __ref build_all_zonelists(pg_data_t *pgdat, struct zone *zone)
if (system_state == SYSTEM_BOOTING) {
- __build_all_zonelists(NULL);
- mminit_verify_zonelist();
- cpuset_init_current_mems_allowed();
+ build_all_zonelists_init();
} else {
if (zone)

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