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| author | Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> | 2015-11-05 18:47:14 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-05 19:34:48 -0800 |
| commit | 5d317b2b6536592a9b51fe65faed43d65ca9158e (patch) | |
| tree | f6d51677a577802ddd873c2e01bf04c5aff1e3f1 /Documentation/filesystems/proc.txt | |
| parent | 25ee01a2fca02dfb5a3ce316e77910c468108199 (diff) | |
| download | lwn-5d317b2b6536592a9b51fe65faed43d65ca9158e.tar.gz lwn-5d317b2b6536592a9b51fe65faed43d65ca9158e.zip | |
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 'Documentation/filesystems/proc.txt')
| -rw-r--r-- | Documentation/filesystems/proc.txt | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index a7d6c06f36c4..12ac0e4455d4 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@ -175,6 +175,7 @@ read the file /proc/PID/status: VmLib: 1412 kB VmPTE: 20 kb VmSwap: 0 kB + HugetlbPages: 0 kB Threads: 1 SigQ: 0/28578 SigPnd: 0000000000000000 @@ -238,6 +239,7 @@ Table 1-2: Contents of the status files (as of 4.1) VmPTE size of page table entries VmPMD size of second level page tables VmSwap size of swap usage (the number of referred swapents) + HugetlbPages size of hugetlb memory portions Threads number of threads SigQ number of signals queued/max. number for queue SigPnd bitmap of pending signals for the thread |