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From: Bharata B Rao <bharata@amd.com>
To: Donet Tom <donettom@linux.ibm.com>,
	<linux-kernel@vger.kernel.org>, <linux-mm@kvack.org>
Cc: <Jonathan.Cameron@huawei.com>, <dave.hansen@intel.com>,
	<gourry@gourry.net>, <mgorman@techsingularity.net>,
	<mingo@redhat.com>, <peterz@infradead.org>,
	<raghavendra.kt@amd.com>, <riel@surriel.com>,
	<rientjes@google.com>, <sj@kernel.org>, <weixugc@google.com>,
	<willy@infradead.org>, <ying.huang@linux.alibaba.com>,
	<ziy@nvidia.com>, <dave@stgolabs.net>, <nifan.cxl@gmail.com>,
	<xuezhengchu@huawei.com>, <yiannis@zptcorp.com>,
	<akpm@linux-foundation.org>, <david@kernel.org>,
	<byungchul@sk.com>, <kinseyho@google.com>,
	<joshua.hahnjy@gmail.com>, <yuanchu@google.com>,
	<balbirs@nvidia.com>, <alok.rathore@samsung.com>,
	<shivankg@amd.com>
Subject: Re: [PATCH v7 5/7] mm: sched: move NUMA balancing tiering promotion to pghot
Date: Wed, 6 May 2026 11:50:31 +0530	[thread overview]
Message-ID: <02c55808-9d55-4024-af7f-472245606686@amd.com> (raw)
In-Reply-To: <4b532a01-674a-4d81-8ccf-312688368c50@linux.ibm.com>

On 05-May-26 10:14 AM, Donet Tom wrote:
> Hi Bharata
> 
> On 5/4/26 11:39 AM, Bharata B Rao wrote:
>>   +/*
>> + * For memory tiering mode, if there are enough free pages (more than
>> + * enough watermark defined here) in fast memory node, to take full
>> + * advantage of fast memory capacity, all recently accessed slow
>> + * memory pages will be migrated to fast memory node without
>> + * considering hot threshold.
>> + */
>> +static bool pgdat_free_space_enough(struct pglist_data *pgdat)
>> +{
>> +    int z;
>> +    unsigned long enough_wmark;
>> +
>> +    enough_wmark = max(1UL * 1024 * 1024 * 1024 >> PAGE_SHIFT,
> 
> Just a thought—would it be better to use #define for these hardcoded values?

We could. It was a code movement, hence left it untouched.

Regards,
Bharata.

  reply	other threads:[~2026-05-06  6:20 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-04  6:09 [PATCH v7 0/7] mm: Hot page tracking and promotion infrastructure Bharata B Rao
2026-05-04  6:09 ` [PATCH v7 1/7] mm: migrate: Allow misplaced migration without VMA Bharata B Rao
2026-05-04  6:09 ` [PATCH v7 2/7] mm: migrate: Add promote_misplaced_memcg_folios() Bharata B Rao
2026-05-04 18:14   ` Donet Tom
2026-05-06  6:15     ` Bharata B Rao
2026-05-04  6:09 ` [PATCH v7 3/7] mm: Hot page tracking and promotion - pghot Bharata B Rao
2026-05-04  6:09 ` [PATCH v7 4/7] mm: pghot: Precision mode for pghot Bharata B Rao
2026-05-04 18:41   ` Donet Tom
2026-05-06  6:17     ` Bharata B Rao
2026-05-04  6:09 ` [PATCH v7 5/7] mm: sched: move NUMA balancing tiering promotion to pghot Bharata B Rao
2026-05-05  4:44   ` Donet Tom
2026-05-06  6:20     ` Bharata B Rao [this message]
2026-05-04  6:09 ` [RFC PATCH v7 6/7] x86/ibs: Move IBS caps definitions into its own header Bharata B Rao
2026-05-04  6:09 ` [RFC PATCH v7 7/7] x86/mm/ibs: In-kernel driver for AMD IBS Memory Profiler Bharata B Rao
2026-05-04  6:23 ` [PATCH v7 0/7] mm: Hot page tracking and promotion infrastructure Bharata B Rao
2026-05-04 20:36 ` Matthew Wilcox
2026-05-05 22:17   ` Balbir Singh
2026-05-06  3:43     ` Bharata B Rao
2026-05-06  4:02       ` Balbir Singh
2026-05-06  5:00         ` Bharata B Rao
2026-05-05 10:41 ` Bharata B Rao
2026-05-05 13:42 ` Bharata B Rao

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