From: Alex Sierra <alex.sierra@amd.com>
To: akpm@linux-foundation.org, Felix.Kuehling@amd.com,
linux-mm@kvack.org, rcampbell@nvidia.com
Cc: jglisse@redhat.com, jgg@nvidia.com,
dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org,
hch@lst.de
Subject: [RFC PATCH v2 6/8] include/linux/mm.h: helpers to check zone device generic type
Date: Mon, 7 Jun 2021 15:42:24 -0500 [thread overview]
Message-ID: <20210607204226.7743-7-alex.sierra@amd.com> (raw)
In-Reply-To: <20210607204226.7743-1-alex.sierra@amd.com>
Two helpers added. One checks if zone device page is generic
type. The other if page is either private or generic type.
Signed-off-by: Alex Sierra <alex.sierra@amd.com>
---
include/linux/mm.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index d8d79bb94be8..f5b247a63044 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1125,6 +1125,14 @@ static inline bool is_device_private_page(const struct page *page)
page->pgmap->type == MEMORY_DEVICE_PRIVATE;
}
+static inline bool is_device_page(const struct page *page)
+{
+ return IS_ENABLED(CONFIG_DEV_PAGEMAP_OPS) &&
+ is_zone_device_page(page) &&
+ (page->pgmap->type == MEMORY_DEVICE_PRIVATE ||
+ page->pgmap->type == MEMORY_DEVICE_GENERIC);
+}
+
static inline bool is_pci_p2pdma_page(const struct page *page)
{
return IS_ENABLED(CONFIG_DEV_PAGEMAP_OPS) &&
--
2.17.1
next prev parent reply other threads:[~2021-06-07 20:43 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-07 20:42 [RFC PATCH v2 0/8] Support DEVICE_GENERIC memory in migrate_vma_* Alex Sierra
2021-06-07 20:42 ` [RFC PATCH v2 1/8] ext4/xfs: add page refcount helper Alex Sierra
2021-06-08 0:29 ` Liam Howlett
2021-06-08 14:33 ` Matthew Wilcox
2021-06-09 19:23 ` Matthew Wilcox
2021-06-14 15:26 ` Felix Kuehling
2021-06-07 20:42 ` [RFC PATCH v2 2/8] mm: remove extra ZONE_DEVICE struct page refcount Alex Sierra
2021-06-07 20:42 ` [RFC PATCH v2 3/8] kernel: resource: lookup_resource as exported symbol Alex Sierra
2021-06-07 20:42 ` [RFC PATCH v2 4/8] drm/amdkfd: add SPM support for SVM Alex Sierra
2021-06-07 20:42 ` [RFC PATCH v2 5/8] drm/amdkfd: generic type as sys mem on migration to ram Alex Sierra
2021-06-07 20:42 ` Alex Sierra [this message]
2021-06-07 20:42 ` [RFC PATCH v2 7/8] mm: add generic type support to migrate_vma helpers Alex Sierra
2021-06-07 20:42 ` [RFC PATCH v2 8/8] mm: call pgmap->ops->page_free for DEVICE_GENERIC pages Alex Sierra
2021-06-08 14:26 ` [RFC PATCH v2 0/8] Support DEVICE_GENERIC memory in migrate_vma_* Matthew Wilcox
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