From: lantianyu1986@gmail.com
To: kys@microsoft.com, haiyangz@microsoft.com,
sthemmin@microsoft.com, sashal@kernel.org,
akpm@linux-foundation.org, michael.h.kelley@microsoft.com
Cc: Tianyu Lan <Tianyu.Lan@microsoft.com>,
linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, vkuznets@redhat.com,
eric.devolder@oracle.com
Subject: [RFC PATCH 2/4] mm/hotplug: Expose is_mem_section_removable() and offline_pages()
Date: Tue, 10 Dec 2019 23:46:09 +0800 [thread overview]
Message-ID: <20191210154611.10958-3-Tianyu.Lan@microsoft.com> (raw)
In-Reply-To: <20191210154611.10958-1-Tianyu.Lan@microsoft.com>
From: Tianyu Lan <Tianyu.Lan@microsoft.com>
Hyper-V driver adds memory hot remove function and will use
these interfaces in Hyper-V balloon driver which may be built
as a module. Expose these function.
Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com>
---
mm/memory_hotplug.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 07e5c67f48a8..4b358ebcc3d7 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1191,6 +1191,7 @@ bool is_mem_section_removable(unsigned long start_pfn, unsigned long nr_pages)
/* All pageblocks in the memory block are likely to be hot-removable */
return true;
}
+EXPORT_SYMBOL_GPL(is_mem_section_removable);
/*
* Confirm all pages in a range [start, end) belong to the same zone.
@@ -1612,6 +1613,7 @@ int offline_pages(unsigned long start_pfn, unsigned long nr_pages)
{
return __offline_pages(start_pfn, start_pfn + nr_pages);
}
+EXPORT_SYMBOL_GPL(offline_pages);
static int check_memblock_offlined_cb(struct memory_block *mem, void *arg)
{
--
2.14.5
next prev parent reply other threads:[~2019-12-10 15:46 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-10 15:46 [RFC PATCH 0/4] x86/Hyper-V: Add Dynamic memory hot-remove function lantianyu1986
2019-12-10 15:46 ` [RFC PATCH 1/4] mm/resource: Move child to new resource when release mem region lantianyu1986
2019-12-10 15:46 ` lantianyu1986 [this message]
2019-12-11 12:07 ` [RFC PATCH 2/4] mm/hotplug: Expose is_mem_section_removable() and offline_pages() David Hildenbrand
2019-12-10 15:46 ` [RFC PATCH 3/4] Hyper-V/Balloon: Call add_memory() with dm_device.ha_lock lantianyu1986
2019-12-11 14:57 ` Vitaly Kuznetsov
2019-12-12 8:24 ` [EXTERNAL] " Tianyu Lan
2019-12-10 15:46 ` [RFC PATCH 4/4] x86/Hyper-V: Add memory hot remove function lantianyu1986
2019-12-11 15:06 ` Vitaly Kuznetsov
2019-12-12 13:37 ` [EXTERNAL] " Tianyu Lan
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