Commit 400e6514 authored by Bob Picco's avatar Bob Picco Committed by Linus Torvalds

[PATCH] ia64: pfn_to_nid() implementation

pfn_to_nid is undefined.  We haven't had this interface on ia64.  The
sys_mbind patches need it.

Oh, the paddr_to_nid call could fail when DISCONTIG+NUMA is configured
because there isn't any ACPI SRAT NUMA information.
Signed-off-by: default avatarBob Picco <bob.picco@hp.com>
Acked-by: default avatarTony Luck <tony.luck@intel.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 0edd73b3
......@@ -15,6 +15,20 @@
#include <asm/page.h>
#include <asm/meminit.h>
static inline int pfn_to_nid(unsigned long pfn)
{
#ifdef CONFIG_NUMA
extern int paddr_to_nid(unsigned long);
int nid = paddr_to_nid(pfn << PAGE_SHIFT);
if (nid < 0)
return 0;
else
return nid;
#else
return 0;
#endif
}
#ifdef CONFIG_DISCONTIGMEM
#ifdef CONFIG_IA64_DIG /* DIG systems are small */
......
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