From: Ankur Arora <ankur.a.arora@oracle.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Dave Hansen <dave.hansen@intel.com>,
Ankur Arora <ankur.a.arora@oracle.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org,
akpm@linux-foundation.org, bp@alien8.de,
dave.hansen@linux.intel.com, hpa@zytor.com, mingo@redhat.com,
mjguzik@gmail.com, luto@kernel.org, acme@kernel.org,
namhyung@kernel.org, tglx@linutronix.de, willy@infradead.org,
jon.grimm@amd.com, bharata@amd.com, raghavendra.kt@amd.com,
boris.ostrovsky@oracle.com, konrad.wilk@oracle.com
Subject: Re: [PATCH v4 13/13] x86/folio_zero_user: Add multi-page clearing
Date: Mon, 16 Jun 2025 11:20:42 -0700 [thread overview]
Message-ID: <871prjzgxx.fsf@oracle.com> (raw)
In-Reply-To: <20250616145007.GF1613376@noisy.programming.kicks-ass.net>
Peter Zijlstra <peterz@infradead.org> writes:
> On Mon, Jun 16, 2025 at 07:44:13AM -0700, Dave Hansen wrote:
>
>> To me, that's deserving of an ARCH_HAS_FOO bit that we can set on the
>> x86 side that then cajoles the core mm/ code to use the fancy new
>> clear_pages_resched() implementation.
>
> Note that we should only set this bit with either full or lazy
> preemption selected. Haven't checked the patch-set to see if that
> constraint is already taken care of.
It is. I check for preempt_model_preemptible() and limit voluntary models
to chunk sizes of 8MB.
--
ankur
next prev parent reply other threads:[~2025-06-16 18:21 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-16 5:22 [PATCH v4 00/13] x86/mm: Add multi-page clearing Ankur Arora
2025-06-16 5:22 ` [PATCH v4 01/13] perf bench mem: Remove repetition around time measurement Ankur Arora
2025-06-16 5:22 ` [PATCH v4 02/13] perf bench mem: Defer type munging of size to float Ankur Arora
2025-06-16 5:22 ` [PATCH v4 03/13] perf bench mem: Move mem op parameters into a structure Ankur Arora
2025-06-16 5:22 ` [PATCH v4 04/13] perf bench mem: Pull out init/fini logic Ankur Arora
2025-06-16 5:22 ` [PATCH v4 05/13] perf bench mem: Switch from zalloc() to mmap() Ankur Arora
2025-06-16 5:22 ` [PATCH v4 06/13] perf bench mem: Allow mapping of hugepages Ankur Arora
2025-06-16 5:22 ` [PATCH v4 07/13] perf bench mem: Allow chunking on a memory region Ankur Arora
2025-06-16 5:22 ` [PATCH v4 08/13] perf bench mem: Refactor mem_options Ankur Arora
2025-06-16 5:22 ` [PATCH v4 09/13] perf bench mem: Add mmap() workloads Ankur Arora
2025-06-16 5:22 ` [PATCH v4 10/13] x86/mm: Simplify clear_page_* Ankur Arora
2025-06-16 14:35 ` Dave Hansen
2025-06-16 14:38 ` Peter Zijlstra
2025-06-16 18:18 ` Ankur Arora
2025-06-16 16:48 ` kernel test robot
2025-06-16 5:22 ` [PATCH v4 11/13] x86/clear_page: Introduce clear_pages() Ankur Arora
2025-06-16 5:22 ` [PATCH v4 12/13] mm: memory: allow arch override for folio_zero_user() Ankur Arora
2025-06-16 5:22 ` [PATCH v4 13/13] x86/folio_zero_user: Add multi-page clearing Ankur Arora
2025-06-16 11:39 ` kernel test robot
2025-06-16 14:44 ` Dave Hansen
2025-06-16 14:50 ` Peter Zijlstra
2025-06-16 15:03 ` Dave Hansen
2025-06-16 18:20 ` Ankur Arora [this message]
2025-06-16 14:58 ` Matthew Wilcox
2025-06-16 18:47 ` Ankur Arora
2025-06-19 23:51 ` Ankur Arora
2025-06-16 15:06 ` [PATCH v4 00/13] x86/mm: " Dave Hansen
2025-06-16 18:25 ` Ankur Arora
2025-06-16 18:30 ` Dave Hansen
2025-06-16 18:43 ` Ankur Arora
2025-07-04 8:15 ` Raghavendra K T
2025-07-07 21:02 ` Ankur Arora
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