[LTP] [PATCH v5 0/3] mm/thp: add two new case

[Zhouping Liu <zliu@redhat.com>]

The patchset is desinged to test THP functionality.

when one process allocate hugepage aligned anonymous pages,
kernel thread 'khugepaged' controlled by sysfs knobs
/sys/kernel/mm/transparent_hugepage/* will scan them, and make
them as transparent hugepage if they are suited, you can find out
how many transparent hugepages are there in one process from
/proc/<pid>/smaps, among the file contents, 'AnonHugePages' entry
stand for transparent hugepage.

v1 to v2:
accepted Wanlong's suggestion, added some comment for '10s'
added 'static' key word for single-file-only variant.

v2 to v3:
added some comments for low memory system.

v3 to v4:
Wanglong point out that the value of khugepaged/defrag is string type,
not a numeric before applying the commit e27e6151b154 in v2.6.39-rc4,
and I checked the code again, found the current cases thp0* don't be
effected by khugepaged/defrag, so I removed the checking of
khugepaged/defrag from khugepaged_scan_done().

v4 to v5:
 1. made some cleaup
 2. updated 10s to 5s for each checking in khugepaged_scan_done()
 3. used SAFE_FILE_SCANF|PRINTF() instead of write_file()

v5 to v6:
made a little cleanup.

Zhouping Liu (3):
  mm/thp: new case thp04.c
  lib/mem: introduce a new function set_global_mempolicy()
  mm/thp: add new case thp05

 runtest/mm                         |   6 ++
 testcases/kernel/mem/include/mem.h |  12 +++
 testcases/kernel/mem/lib/mem.c     | 199 ++++++++++++++++++++++++++++++++++++-
 testcases/kernel/mem/thp/thp04.c   | 142 ++++++++++++++++++++++++++
 testcases/kernel/mem/thp/thp05.c   | 153 ++++++++++++++++++++++++++++
 5 files changed, 511 insertions(+), 1 deletion(-)
 create mode 100644 testcases/kernel/mem/thp/thp04.c
 create mode 100644 testcases/kernel/mem/thp/thp05.c

-- 
1.7.11.7


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