[PATCH RFC 1/5] xen: move round_pg{up,down} to pfn.h

[Wei Liu <wei.liu2@citrix.com>]

They are going to be needed in multiple places. Instead of replicating
more, move them to pfn.h.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
---
 xen/arch/x86/domain_build.c | 3 ---
 xen/common/page_alloc.c     | 4 +---
 xen/include/xen/pfn.h       | 3 +++
 3 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/xen/arch/x86/domain_build.c b/xen/arch/x86/domain_build.c
index e4b60d436f..00ce5f24e9 100644
--- a/xen/arch/x86/domain_build.c
+++ b/xen/arch/x86/domain_build.c
@@ -267,9 +267,6 @@ boolean_param("ro-hpet", ro_hpet);
 #define L3_PROT (BASE_PROT|_PAGE_DIRTY)
 #define L4_PROT (BASE_PROT|_PAGE_DIRTY)
 
-#define round_pgup(_p)    (((_p)+(PAGE_SIZE-1))&PAGE_MASK)
-#define round_pgdown(_p)  ((_p)&PAGE_MASK)
-
 static unsigned int __initdata memflags = MEMF_no_dma|MEMF_exact_node;
 
 static struct page_info * __init alloc_chunk(
diff --git a/xen/common/page_alloc.c b/xen/common/page_alloc.c
index 530ede1d20..42c20cb201 100644
--- a/xen/common/page_alloc.c
+++ b/xen/common/page_alloc.c
@@ -131,6 +131,7 @@
 #include <xen/domain_page.h>
 #include <xen/keyhandler.h>
 #include <xen/perfc.h>
+#include <xen/pfn.h>
 #include <xen/numa.h>
 #include <xen/nodemask.h>
 #include <xen/event.h>
@@ -176,9 +177,6 @@ size_param("bootscrub_chunk", opt_bootscrub_chunk);
 static unsigned int dma_bitsize;
 integer_param("dma_bits", dma_bitsize);
 
-#define round_pgdown(_p)  ((_p)&PAGE_MASK)
-#define round_pgup(_p)    (((_p)+(PAGE_SIZE-1))&PAGE_MASK)
-
 /* Offlined page list, protected by heap_lock. */
 PAGE_LIST_HEAD(page_offlined_list);
 /* Broken page list, protected by heap_lock. */
diff --git a/xen/include/xen/pfn.h b/xen/include/xen/pfn.h
index 3626197de3..ed9d27d568 100644
--- a/xen/include/xen/pfn.h
+++ b/xen/include/xen/pfn.h
@@ -6,4 +6,7 @@
 #define PFN_DOWN(x)   ((x) >> PAGE_SHIFT)
 #define PFN_UP(x)     (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
 
+#define round_pgup(_p)    (((_p)+(PAGE_SIZE-1))&PAGE_MASK)
+#define round_pgdown(_p)  ((_p)&PAGE_MASK)
+
 #endif /* __XEN_PFN_H__ */
-- 
2.11.0


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