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From: Alexander Duyck <alexander.duyck@gmail.com>
To: nitesh@redhat.com, kvm@vger.kernel.org, david@redhat.com,
	mst@redhat.com, dave.hansen@intel.com,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	akpm@linux-foundation.org
Cc: yang.zhang.wz@gmail.com, pagupta@redhat.com, riel@surriel.com,
	konrad.wilk@oracle.com, willy@infradead.org,
	lcapitulino@redhat.com, wei.w.wang@intel.com,
	aarcange@redhat.com, pbonzini@redhat.com,
	dan.j.williams@intel.com, alexander.h.duyck@linux.intel.com
Subject: [PATCH v4 2/6] mm: Move set/get_pcppage_migratetype to mmzone.h
Date: Wed, 07 Aug 2019 15:41:54 -0700	[thread overview]
Message-ID: <20190807224154.6891.29107.stgit@localhost.localdomain> (raw)
In-Reply-To: <20190807224037.6891.53512.stgit@localhost.localdomain>

From: Alexander Duyck <alexander.h.duyck@linux.intel.com>

In order to support page reporting it will be necessary to store and
retrieve the migratetype of a page. To enable that I am moving the set and
get operations for pcppage_migratetype into the mm/internal.h header so
that they can be used outside of the page_alloc.c file.

Signed-off-by: Alexander Duyck <alexander.h.duyck@linux.intel.com>
---
 mm/internal.h   |   18 ++++++++++++++++++
 mm/page_alloc.c |   18 ------------------
 2 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/mm/internal.h b/mm/internal.h
index 0d5f720c75ab..e4a1a57bbd40 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -549,6 +549,24 @@ static inline bool is_migrate_highatomic_page(struct page *page)
 	return get_pageblock_migratetype(page) == MIGRATE_HIGHATOMIC;
 }
 
+/*
+ * A cached value of the page's pageblock's migratetype, used when the page is
+ * put on a pcplist. Used to avoid the pageblock migratetype lookup when
+ * freeing from pcplists in most cases, at the cost of possibly becoming stale.
+ * Also the migratetype set in the page does not necessarily match the pcplist
+ * index, e.g. page might have MIGRATE_CMA set but be on a pcplist with any
+ * other index - this ensures that it will be put on the correct CMA freelist.
+ */
+static inline int get_pcppage_migratetype(struct page *page)
+{
+	return page->index;
+}
+
+static inline void set_pcppage_migratetype(struct page *page, int migratetype)
+{
+	page->index = migratetype;
+}
+
 void setup_zone_pageset(struct zone *zone);
 extern struct page *alloc_new_node_page(struct page *page, unsigned long node);
 #endif	/* __MM_INTERNAL_H */
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index e3cb6e7aa296..f04192f5ec3c 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -185,24 +185,6 @@ static int __init early_init_on_free(char *buf)
 }
 early_param("init_on_free", early_init_on_free);
 
-/*
- * A cached value of the page's pageblock's migratetype, used when the page is
- * put on a pcplist. Used to avoid the pageblock migratetype lookup when
- * freeing from pcplists in most cases, at the cost of possibly becoming stale.
- * Also the migratetype set in the page does not necessarily match the pcplist
- * index, e.g. page might have MIGRATE_CMA set but be on a pcplist with any
- * other index - this ensures that it will be put on the correct CMA freelist.
- */
-static inline int get_pcppage_migratetype(struct page *page)
-{
-	return page->index;
-}
-
-static inline void set_pcppage_migratetype(struct page *page, int migratetype)
-{
-	page->index = migratetype;
-}
-
 #ifdef CONFIG_PM_SLEEP
 /*
  * The following functions are used by the suspend/hibernate code to temporarily


  parent reply	other threads:[~2019-08-07 22:41 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-07 22:41 [PATCH v4 0/6] mm / virtio: Provide support for unused page reporting Alexander Duyck
2019-08-07 22:41 ` [PATCH v4 1/6] mm: Adjust shuffle code to allow for future coalescing Alexander Duyck
2019-08-07 22:41 ` Alexander Duyck [this message]
2019-08-07 22:42 ` [PATCH v4 3/6] mm: Use zone and order instead of free area in free_list manipulators Alexander Duyck
2019-08-07 22:42 ` [PATCH v4 4/6] mm: Introduce Reported pages Alexander Duyck
2019-08-08 13:45   ` Nitesh Narayan Lal
2019-08-08 15:11     ` Alexander Duyck
2019-08-07 22:42 ` [PATCH v4 5/6] virtio-balloon: Pull page poisoning config out of free page hinting Alexander Duyck
2019-08-07 22:42 ` [PATCH v4 6/6] virtio-balloon: Add support for providing unused page reports to host Alexander Duyck
2019-08-12  9:53   ` Michael S. Tsirkin
2019-08-12 15:20     ` Alexander Duyck
2019-08-12 15:43       ` Michael S. Tsirkin
2019-08-12 15:49       ` David Hildenbrand
2019-08-12 16:09         ` Alexander Duyck
2019-08-07 22:43 ` [PATCH v4 QEMU 1/3] virtio-ballon: Implement support for page poison tracking feature Alexander Duyck
2019-08-07 22:43 ` [PATCH v4 QEMU 2/3] virtio-balloon: Add bit to notify guest of unused page reporting Alexander Duyck
2019-08-07 22:43 ` [PATCH v4 QEMU 3/3] virtio-balloon: Provide a interface for " Alexander Duyck

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