diff options
| author | Ryan Roberts <ryan.roberts@arm.com> | 2024-08-14 14:02:47 +1200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-09-01 20:26:18 -0700 |
| commit | dd4d30d1cdbe826e6569b44453c2d9bb9424d234 (patch) | |
| tree | a96a6ba9c7fa97794531677c2e2a3df7efc4945f /include | |
| parent | maple_tree: make write helper functions void (diff) | |
| download | linux-dd4d30d1cdbe826e6569b44453c2d9bb9424d234.tar.gz linux-dd4d30d1cdbe826e6569b44453c2d9bb9424d234.zip | |
mm: override mTHP "enabled" defaults at kernel cmdline
Add thp_anon= cmdline parameter to allow specifying the default enablement
of each supported anon THP size. The parameter accepts the following
format and can be provided multiple times to configure each size:
thp_anon=<size>,<size>[KMG]:<value>;<size>-<size>[KMG]:<value>
An example:
thp_anon=16K-64K:always;128K,512K:inherit;256K:madvise;1M-2M:never
See Documentation/admin-guide/mm/transhuge.rst for more details.
Configuring the defaults at boot time is useful to allow early user space
to take advantage of mTHP before its been configured through sysfs.
[v-songbaohua@oppo.com: use get_oder() and check size is is_power_of_2]
Link: https://lkml.kernel.org/r/20240814224635.43272-1-21cnbao@gmail.com
[ryan.roberts@arm.com: some minor cleanup according to David's comments]
Link: https://lkml.kernel.org/r/20240820105244.62703-1-21cnbao@gmail.com
Link: https://lkml.kernel.org/r/20240814020247.67297-1-21cnbao@gmail.com
Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
Co-developed-by: Barry Song <v-songbaohua@oppo.com>
Signed-off-by: Barry Song <v-songbaohua@oppo.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Tested-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Lance Yang <ioworker0@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions