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authorNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>2015-11-05 18:47:14 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-11-05 19:34:48 -0800
commit5d317b2b6536592a9b51fe65faed43d65ca9158e (patch)
treef6d51677a577802ddd873c2e01bf04c5aff1e3f1 /fs
parent25ee01a2fca02dfb5a3ce316e77910c468108199 (diff)
downloadop-kernel-dev-5d317b2b6536592a9b51fe65faed43d65ca9158e.zip
op-kernel-dev-5d317b2b6536592a9b51fe65faed43d65ca9158e.tar.gz
mm: hugetlb: proc: add HugetlbPages field to /proc/PID/status
Currently there's no easy way to get per-process usage of hugetlb pages, which is inconvenient because userspace applications which use hugetlb typically want to control their processes on the basis of how much memory (including hugetlb) they use. So this patch simply provides easy access to the info via /proc/PID/status. Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Acked-by: Joern Engel <joern@logfs.org> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/proc/task_mmu.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 5988b83..288185e 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -70,6 +70,7 @@ void task_mem(struct seq_file *m, struct mm_struct *mm)
ptes >> 10,
pmds >> 10,
swap << (PAGE_SHIFT-10));
+ hugetlb_report_usage(m, mm);
}
unsigned long task_vsize(struct mm_struct *mm)
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