[LTP] [PATCH v4 0/3] mm/thp: add two new case

Zhouping Liu
2013-04-15T09:31:54Z

The patchset is desinged to test THP functionality.

when one process allocate hugepage aligned anonymouse 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().

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 | 198 ++++++++++++++++++++++++++++++++++++-
testcases/kernel/mem/thp/thp04.c | 136 +++++++++++++++++++++++++
testcases/kernel/mem/thp/thp05.c | 152 ++++++++++++++++++++++++++++
5 files changed, 503 insertions(+), 1 deletion(-)
create mode 100644 testcases/kernel/mem/thp/thp04.c
create mode 100644 testcases/kernel/mem/thp/thp05.c