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authorAndy Lutomirski <luto@kernel.org>2016-07-28 15:48:14 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-07-28 16:07:41 -0700
commitd30dd8be06a5ae640766b20ea9ae288832bd12ac (patch)
treec82789cc86b558aefa3a2eec522f0c63aadc457c /drivers/base/node.c
parent11db04864336f20e19e16b64ade781eeefc3f6d3 (diff)
downloadlinux-d30dd8be06a5ae640766b20ea9ae288832bd12ac.tar.bz2
mm: track NR_KERNEL_STACK in KiB instead of number of stacks
Currently, NR_KERNEL_STACK tracks the number of kernel stacks in a zone. This only makes sense if each kernel stack exists entirely in one zone, and allowing vmapped stacks could break this assumption. Since frv has THREAD_SIZE < PAGE_SIZE, we need to track kernel stack allocations in a unit that divides both THREAD_SIZE and PAGE_SIZE on all architectures. Keep it simple and use KiB. Link: http://lkml.kernel.org/r/083c71e642c5fa5f1b6898902e1b2db7b48940d4.1468523549.git.luto@kernel.org Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Vladimir Davydov <vdavydov@virtuozzo.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com> Reviewed-by: Vladimir Davydov <vdavydov@virtuozzo.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/base/node.c')
-rw-r--r--drivers/base/node.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/base/node.c b/drivers/base/node.c
index 264cc214c4df..29cd96661b30 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -124,8 +124,7 @@ static ssize_t node_read_meminfo(struct device *dev,
nid, K(node_page_state(pgdat, NR_FILE_MAPPED)),
nid, K(node_page_state(pgdat, NR_ANON_MAPPED)),
nid, K(i.sharedram),
- nid, sum_zone_node_page_state(nid, NR_KERNEL_STACK) *
- THREAD_SIZE / 1024,
+ nid, sum_zone_node_page_state(nid, NR_KERNEL_STACK_KB),
nid, K(sum_zone_node_page_state(nid, NR_PAGETABLE)),
nid, K(node_page_state(pgdat, NR_UNSTABLE_NFS)),
nid, K(sum_zone_node_page_state(nid, NR_BOUNCE)),