@@ -6688,7 +6688,7 @@
0: no polling (default)
thp_anon= [KNL]
- Format: <size>,<size>[KMG]:<state>;<size>-<size>[KMG]:<state>
+ Format: <size>[KMG],<size>[KMG]:<state>;<size>[KMG]-<size>[KMG]:<state>
state is one of "always", "madvise", "never" or "inherit".
Control the default behavior of the system with respect
to anonymous transparent hugepages.
@@ -303,7 +303,7 @@ control by passing the parameter ``transparent_hugepage=always`` or
kernel command line.
Alternatively, each supported anonymous THP size can be controlled by
-passing ``thp_anon=<size>,<size>[KMG]:<state>;<size>-<size>[KMG]:<state>``,
+passing ``thp_anon=<size>[KMG],<size>[KMG]:<state>;<size>[KMG]-<size>[KMG]:<state>``,
where ``<size>`` is the THP size (must be a power of 2 of PAGE_SIZE and
supported anonymous THP) and ``<state>`` is one of ``always``, ``madvise``,
``never`` or ``inherit``.
If we add ``thp_anon=32,64K:always`` to the kernel command line, we will see the following error: [ 0.000000] huge_memory: thp_anon=32,64K:always: error parsing string, ignoring setting This happens because the correct format isn't ``thp_anon=<size>,<size>[KMG]:<state>```, as [KMG] must follow each number to especify its unit. So, the correct format is ``thp_anon=<size>[KMG],<size>[KMG]:<state>```. Therefore, adjust the documentation to reflect the correct format of the parameter ``thp_anon=``. Fixes: dd4d30d1cdbe ("mm: override mTHP "enabled" defaults at kernel cmdline") Signed-off-by: Maíra Canal <mcanal@igalia.com> Acked-by: Barry Song <baohua@kernel.org> Acked-by: David Hildenbrand <david@redhat.com> --- Documentation/admin-guide/kernel-parameters.txt | 2 +- Documentation/admin-guide/mm/transhuge.rst | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)