Re: [PATCH v2 2/9] mm/memory_hotplug: introduce "auto-movable" online policy
From: David Hildenbrand <hidden>
Date: 2021-07-26 07:15:43
Also in:
linux-acpi, linux-mm, lkml
Subsystem:
memory hot(un)plug, memory management, the rest · Maintainers:
David Hildenbrand, Oscar Salvador, Andrew Morton, Linus Torvalds
+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
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