On 30.10.24 13:58, Maíra Canal wrote:
Add a new kernel command line to control the hugepage allocation policy
for the internal shmem mount, ``transparent_hugepage_shmem``. The
parameter is similar to ``transparent_hugepage`` and has the following
format:
transparent_hugepage_shmem=<policy>
where ``<policy>`` is one of the seven valid policies available for
shmem.
By configuring the default hugepage allocation policy for the internal
shmem mount, applications that use shmem, such as the DRM GEM objects,
can take advantage of mTHP before it's been configured through sysfs.
Signed-off-by: Maíra Canal <mcanal@xxxxxxxxxx>
---
.../admin-guide/kernel-parameters.txt | 7 ++
Documentation/admin-guide/mm/transhuge.rst | 6 ++
mm/shmem.c | 72 +++++++++++++------
3 files changed, 62 insertions(+), 23 deletions(-)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 1666576acc0e..acabb04d0dd4 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -6926,6 +6926,13 @@
See Documentation/admin-guide/mm/transhuge.rst
for more details.
+ transparent_hugepage_shmem= [KNL]
+ Format: [always|within_size|advise|never|deny|force]
+ Can be used to control the hugepage allocation policy for
+ the internal shmem mount.
+ See Documentation/admin-guide/mm/transhuge.rst
+ for more details.
+
LGTM, and it's consistent with the parameter for anon.
Acked-by: David Hildenbrand <david@xxxxxxxxxx>
--
Cheers,
David / dhildenb
