From: "David Hildenbrand (Arm)" <david@kernel.org>
To: Nico Pache <npache@redhat.com>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org
Cc: aarcange@redhat.com, akpm@linux-foundation.org,
anshuman.khandual@arm.com, apopple@nvidia.com, baohua@kernel.org,
baolin.wang@linux.alibaba.com, byungchul@sk.com,
catalin.marinas@arm.com, cl@gentwo.org, corbet@lwn.net,
dave.hansen@linux.intel.com, dev.jain@arm.com, gourry@gourry.net,
hannes@cmpxchg.org, hughd@google.com, jack@suse.cz,
jackmanb@google.com, jannh@google.com, jglisse@google.com,
joshua.hahnjy@gmail.com, kas@kernel.org, lance.yang@linux.dev,
Liam.Howlett@oracle.com, lorenzo.stoakes@oracle.com,
mathieu.desnoyers@efficios.com, matthew.brost@intel.com,
mhiramat@kernel.org, mhocko@suse.com, peterx@redhat.com,
pfalcato@suse.de, rakie.kim@sk.com, raquini@redhat.com,
rdunlap@infradead.org, richard.weiyang@gmail.com,
rientjes@google.com, rostedt@goodmis.org, rppt@kernel.org,
ryan.roberts@arm.com, shivankg@amd.com, sunnanyong@huawei.com,
surenb@google.com, thomas.hellstrom@linux.intel.com,
tiwai@suse.de, usamaarif642@gmail.com, vbabka@suse.cz,
vishal.moola@gmail.com, wangkefeng.wang@huawei.com,
will@kernel.org, willy@infradead.org,
yang@os.amperecomputing.com, ying.huang@linux.alibaba.com,
ziy@nvidia.com, zokeefe@google.com
Subject: Re: [PATCH mm-unstable v15 12/13] mm/khugepaged: run khugepaged for all orders
Date: Thu, 12 Mar 2026 22:22:17 +0100 [thread overview]
Message-ID: <b001eb8e-3e12-4713-aff5-8cfcfea792e6@kernel.org> (raw)
In-Reply-To: <20260226032650.234386-1-npache@redhat.com>
On 2/26/26 04:26, Nico Pache wrote:
> From: Baolin Wang <baolin.wang@linux.alibaba.com>
>
> If any order (m)THP is enabled we should allow running khugepaged to
> attempt scanning and collapsing mTHPs. In order for khugepaged to operate
> when only mTHP sizes are specified in sysfs, we must modify the predicate
> function that determines whether it ought to run to do so.
>
> This function is currently called hugepage_pmd_enabled(), this patch
> renames it to hugepage_enabled() and updates the logic to check to
> determine whether any valid orders may exist which would justify
> khugepaged running.
>
> We must also update collapse_allowable_orders() to check all orders if
> the vma is anonymous and the collapse is khugepaged.
>
> After this patch khugepaged mTHP collapse is fully enabled.
>
> Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
> Signed-off-by: Nico Pache <npache@redhat.com>
> ---
Nothing jumped at me
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
--
Cheers,
David
next prev parent reply other threads:[~2026-03-12 21:22 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-26 3:17 [PATCH mm-unstable v15 00/13] khugepaged: mTHP support Nico Pache
2026-02-26 3:22 ` [PATCH mm-unstable v15 01/13] mm/khugepaged: generalize hugepage_vma_revalidate for " Nico Pache
2026-03-12 20:00 ` David Hildenbrand (Arm)
2026-02-26 3:23 ` [PATCH mm-unstable v15 02/13] mm/khugepaged: generalize alloc_charge_folio() Nico Pache
2026-03-12 20:05 ` David Hildenbrand (Arm)
2026-02-26 3:23 ` [PATCH mm-unstable v15 03/13] mm/khugepaged: generalize __collapse_huge_page_* for mTHP support Nico Pache
2026-03-12 20:32 ` David Hildenbrand (Arm)
2026-03-12 20:36 ` David Hildenbrand (Arm)
2026-03-12 20:56 ` David Hildenbrand (Arm)
2026-02-26 3:24 ` [PATCH mm-unstable v15 04/13] mm/khugepaged: introduce collapse_max_ptes_none helper function Nico Pache
2026-02-26 3:24 ` [PATCH mm-unstable v15 05/13] mm/khugepaged: generalize collapse_huge_page for mTHP collapse Nico Pache
2026-03-17 16:51 ` Lorenzo Stoakes (Oracle)
2026-03-17 17:16 ` Randy Dunlap
2026-02-26 3:24 ` [PATCH mm-unstable v15 06/13] mm/khugepaged: skip collapsing mTHP to smaller orders Nico Pache
2026-03-12 21:00 ` David Hildenbrand (Arm)
2026-02-26 3:25 ` [PATCH mm-unstable v15 07/13] mm/khugepaged: add per-order mTHP collapse failure statistics Nico Pache
2026-03-12 21:03 ` David Hildenbrand (Arm)
2026-03-17 17:05 ` Lorenzo Stoakes (Oracle)
2026-02-26 3:25 ` [PATCH mm-unstable v15 08/13] mm/khugepaged: improve tracepoints for mTHP orders Nico Pache
2026-03-12 21:05 ` David Hildenbrand (Arm)
2026-02-26 3:25 ` [PATCH mm-unstable v15 09/13] mm/khugepaged: introduce collapse_allowable_orders helper function Nico Pache
2026-03-12 21:09 ` David Hildenbrand (Arm)
2026-03-17 17:08 ` Lorenzo Stoakes (Oracle)
2026-02-26 3:26 ` [PATCH mm-unstable v15 10/13] mm/khugepaged: Introduce mTHP collapse support Nico Pache
2026-03-12 21:16 ` David Hildenbrand (Arm)
2026-03-17 21:36 ` Lorenzo Stoakes (Oracle)
2026-02-26 3:26 ` [PATCH mm-unstable v15 11/13] mm/khugepaged: avoid unnecessary mTHP collapse attempts Nico Pache
2026-02-26 16:26 ` Usama Arif
2026-02-26 20:47 ` Nico Pache
2026-03-12 21:19 ` David Hildenbrand (Arm)
2026-03-17 10:35 ` Lorenzo Stoakes (Oracle)
2026-03-18 18:59 ` Nico Pache
2026-03-18 19:48 ` David Hildenbrand (Arm)
2026-03-19 15:59 ` Lorenzo Stoakes (Oracle)
2026-02-26 3:26 ` [PATCH mm-unstable v15 12/13] mm/khugepaged: run khugepaged for all orders Nico Pache
2026-02-26 15:53 ` Usama Arif
2026-03-12 21:22 ` David Hildenbrand (Arm) [this message]
2026-03-17 10:58 ` Lorenzo Stoakes (Oracle)
2026-03-18 19:02 ` Nico Pache
2026-03-17 11:36 ` Lance Yang
2026-03-18 19:07 ` Nico Pache
2026-02-26 3:27 ` [PATCH mm-unstable v15 13/13] Documentation: mm: update the admin guide for mTHP collapse Nico Pache
2026-03-17 11:02 ` Lorenzo Stoakes (Oracle)
2026-03-18 19:08 ` Nico Pache
2026-03-18 19:49 ` David Hildenbrand (Arm)
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=b001eb8e-3e12-4713-aff5-8cfcfea792e6@kernel.org \
--to=david@kernel.org \
--cc=Liam.Howlett@oracle.com \
--cc=aarcange@redhat.com \
--cc=akpm@linux-foundation.org \
--cc=anshuman.khandual@arm.com \
--cc=apopple@nvidia.com \
--cc=baohua@kernel.org \
--cc=baolin.wang@linux.alibaba.com \
--cc=byungchul@sk.com \
--cc=catalin.marinas@arm.com \
--cc=cl@gentwo.org \
--cc=corbet@lwn.net \
--cc=dave.hansen@linux.intel.com \
--cc=dev.jain@arm.com \
--cc=gourry@gourry.net \
--cc=hannes@cmpxchg.org \
--cc=hughd@google.com \
--cc=jack@suse.cz \
--cc=jackmanb@google.com \
--cc=jannh@google.com \
--cc=jglisse@google.com \
--cc=joshua.hahnjy@gmail.com \
--cc=kas@kernel.org \
--cc=lance.yang@linux.dev \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux-trace-kernel@vger.kernel.org \
--cc=lorenzo.stoakes@oracle.com \
--cc=mathieu.desnoyers@efficios.com \
--cc=matthew.brost@intel.com \
--cc=mhiramat@kernel.org \
--cc=mhocko@suse.com \
--cc=npache@redhat.com \
--cc=peterx@redhat.com \
--cc=pfalcato@suse.de \
--cc=rakie.kim@sk.com \
--cc=raquini@redhat.com \
--cc=rdunlap@infradead.org \
--cc=richard.weiyang@gmail.com \
--cc=rientjes@google.com \
--cc=rostedt@goodmis.org \
--cc=rppt@kernel.org \
--cc=ryan.roberts@arm.com \
--cc=shivankg@amd.com \
--cc=sunnanyong@huawei.com \
--cc=surenb@google.com \
--cc=thomas.hellstrom@linux.intel.com \
--cc=tiwai@suse.de \
--cc=usamaarif642@gmail.com \
--cc=vbabka@suse.cz \
--cc=vishal.moola@gmail.com \
--cc=wangkefeng.wang@huawei.com \
--cc=will@kernel.org \
--cc=willy@infradead.org \
--cc=yang@os.amperecomputing.com \
--cc=ying.huang@linux.alibaba.com \
--cc=ziy@nvidia.com \
--cc=zokeefe@google.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox