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| author | Nico Pache (Red Hat) <nico.pache@linux.dev> | 2026-08-11 06:48:39 -0600 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-08-24 18:43:23 -0700 |
| commit | 2a0be246e342e239ef91d28e2658b6bf508cc065 (patch) | |
| tree | 15e8bbe751fb4e8d2ff92c543be65043922a9c0e | |
| parent | 27490db7ec048175522368ac0aa2e99249e5c48d (diff) | |
| download | linux-2a0be246e342e239ef91d28e2658b6bf508cc065.tar.gz linux-2a0be246e342e239ef91d28e2658b6bf508cc065.zip | |
mm: Documentation: clarify where the mTHP stats live
The note about khugepaged counters references /proc/vmstat for the PMD
case, but never mentions where the mTHPs stats can be found (i.e.:
/sys/kernel/mm/transparent_hugepage/hugepages-<size>kB/stats/) Add a small
addition to this section for clarity.
Also fix a missing period while we are at it.
Link: https://lore.kernel.org/20260811-khugepaged_pte_refactor-v4-7-ddac39d61c4a@linux.dev
Signed-off-by: Nico Pache (Red Hat) <nico.pache@linux.dev>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Suggested-by: Lorenzo Stoakes <ljs@kernel.org>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Acked-by: Pedro Falcato <pfalcato@suse.de>
Reviewed-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>
Reviewed-by: Lance Yang <lance.yang@linux.dev>
Cc: Barry Song <baohua@kernel.org>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Usama Arif <usama.arif@linux.dev>
Cc: Vlastimil Babka <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | Documentation/admin-guide/mm/transhuge.rst | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/Documentation/admin-guide/mm/transhuge.rst b/Documentation/admin-guide/mm/transhuge.rst index 16f37135ed80..b187d618452f 100644 --- a/Documentation/admin-guide/mm/transhuge.rst +++ b/Documentation/admin-guide/mm/transhuge.rst @@ -224,7 +224,7 @@ khugepaged will be automatically started when any THP size is enabled (either of the per-size anon control or the top-level control are set to "always" or "madvise"), and it'll be automatically shutdown when all THP sizes are disabled (when both the per-size anon control and the -top-level control are "never") +top-level control are "never"). process THP controls -------------------- @@ -301,7 +301,9 @@ being replaced by a PMD mapping, or (2) physical pages replaced by one hugepage of various sizes (PMD-sized or mTHP). Each may happen independently, or together, depending on the type of memory and the failures that occur. As such, this value should be interpreted roughly as a sign of progress, -and counters in /proc/vmstat consulted for more accurate accounting):: +and counters in /proc/vmstat consulted for more accurate accounting. +Per-order mTHP collapse statistics are also available under +/sys/kernel/mm/transparent_hugepage/hugepages-<size>kB/stats/):: /sys/kernel/mm/transparent_hugepage/khugepaged/pages_collapsed |