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From: David Hildenbrand <david@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	Jason Wang <jasowang@redhat.com>,
	Marek Kedzierski <mkedzier@redhat.com>,
	Hui Zhu <teawater@gmail.com>,
	Pankaj Gupta <pankaj.gupta.linux@gmail.com>,
	Wei Yang <richard.weiyang@linux.alibaba.com>,
	Oscar Salvador <osalvador@suse.de>,
	Michal Hocko <mhocko@kernel.org>,
	Dan Williams <dan.j.williams@intel.com>,
	Anshuman Khandual <anshuman.khandual@arm.com>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Vlastimil Babka <vbabka@suse.cz>, Mike Rapoport <rppt@kernel.org>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Len Brown <lenb@kernel.org>,
	Pavel Tatashin <pasha.tatashin@soleen.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	virtualization@lists.linux-foundation.org,
	linux-acpi@vger.kernel.org
Subject: Re: [PATCH v2 2/9] mm/memory_hotplug: introduce "auto-movable" online policy
Date: Mon, 26 Jul 2021 09:15:35 +0200	[thread overview]
Message-ID: <cd67a188-6d87-2d99-cfb8-2c4964e6087e@redhat.com> (raw)
In-Reply-To: <20210723125210.29987-3-david@redhat.com>

>   
> +struct auto_movable_stats {
> +	unsigned long kernel_early_pages;
> +	unsigned long movable_pages;
> +};
> +
> +static void auto_movable_stats_account_zone(struct auto_movable_stats *stats,
> +					    struct zone *zone)
> +{
> +	if (zone_idx(zone) == ZONE_MOVABLE) {
> +		stats->movable_pages += zone->present_pages;
> +	} else {
> +		/*
> +		 * CMA pages (never on hotplugged memory) behave like
> +		 * ZONE_MOVABLE.
> +		 */
> +		stats->movable_pages += zone->cma_pages;
> +		stats->kernel_early_pages += zone->present_early_pages;
> +		stats->kernel_early_pages -= zone->cma_pages;
> +	}
> +}

The following on top to make it compile without CONFIG_CMA (thanks Randy):

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index bfdaa28eb86f..fa1a0afd32ba 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -741,13 +741,15 @@ static void auto_movable_stats_account_zone(struct auto_movable_stats *stats,
         if (zone_idx(zone) == ZONE_MOVABLE) {
                 stats->movable_pages += zone->present_pages;
         } else {
+               stats->kernel_early_pages += zone->present_early_pages;
+#ifdef CONFIG_CMA
                 /*
                  * CMA pages (never on hotplugged memory) behave like
                  * ZONE_MOVABLE.
                  */
                 stats->movable_pages += zone->cma_pages;
-               stats->kernel_early_pages += zone->present_early_pages;
                 stats->kernel_early_pages -= zone->cma_pages;
+#endif /* CONFIG_CMA */
         }
  }
  struct auto_movable_group_stats {



-- 
Thanks,

David / dhildenb


  reply	other threads:[~2021-07-26  7:15 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-23 12:52 [PATCH v2 0/9] mm/memory_hotplug: "auto-movable" online policy and memory groups David Hildenbrand
2021-07-23 12:52 ` [PATCH v2 1/9] mm: track present early pages per zone David Hildenbrand
2021-07-23 12:52 ` [PATCH v2 2/9] mm/memory_hotplug: introduce "auto-movable" online policy David Hildenbrand
2021-07-26  7:15   ` David Hildenbrand [this message]
2021-07-23 12:52 ` [PATCH v2 3/9] drivers/base/memory: introduce "memory groups" to logically group memory blocks David Hildenbrand
2021-07-28 13:39   ` Greg Kroah-Hartman
2021-07-28 14:16     ` David Hildenbrand
2021-07-23 12:52 ` [PATCH v2 4/9] mm/memory_hotplug: track present pages in memory groups David Hildenbrand
2021-07-23 12:52 ` [PATCH v2 5/9] ACPI: memhotplug: use a single static memory group for a single memory device David Hildenbrand
2021-07-23 12:52 ` [PATCH v2 6/9] dax/kmem: use a single static memory group for a single probed unit David Hildenbrand
2021-07-23 12:52 ` [PATCH v2 7/9] virtio-mem: use a single dynamic memory group for a single virtio-mem device David Hildenbrand
2021-07-23 12:52 ` [PATCH v2 8/9] mm/memory_hotplug: memory group aware "auto-movable" online policy David Hildenbrand
2021-07-23 12:52 ` [PATCH v2 9/9] mm/memory_hotplug: improved dynamic " David Hildenbrand

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