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authorNitin Gupta <nitin.m.gupta@oracle.com>2017-08-12 02:46:50 +0300
committerDavid S. Miller <davem@davemloft.net>2017-08-16 07:48:07 +0300
commitdf7b2155bbe75525531e47c8a67ae4f1dbbae976 (patch)
tree8a41a2304dc99e7fa024a5debef0ac9197231842 /arch/sparc/include/asm/hugetlb.h
parent44382b0195e608732b0bed14d51b5e5f79f46471 (diff)
downloadlinux-df7b2155bbe75525531e47c8a67ae4f1dbbae976.tar.xz
sparc64: Add 16GB hugepage support
Adds support for 16GB hugepage size. To use this page size use kernel parameters as: default_hugepagesz=16G hugepagesz=16G hugepages=10 Testing: Tested with the stream benchmark which allocates 48G of arrays backed by 16G hugepages and does RW operation on them in parallel. Orabug: 25362942 Cc: Anthony Yznaga <anthony.yznaga@oracle.com> Reviewed-by: Bob Picco <bob.picco@oracle.com> Signed-off-by: Nitin Gupta <nitin.m.gupta@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/include/asm/hugetlb.h')
-rw-r--r--arch/sparc/include/asm/hugetlb.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
index d1f837dc77a4..0ca7caab1b06 100644
--- a/arch/sparc/include/asm/hugetlb.h
+++ b/arch/sparc/include/asm/hugetlb.h
@@ -4,6 +4,13 @@
#include <asm/page.h>
#include <asm-generic/hugetlb.h>
+#ifdef CONFIG_HUGETLB_PAGE
+struct pud_huge_patch_entry {
+ unsigned int addr;
+ unsigned int insn;
+};
+extern struct pud_huge_patch_entry __pud_huge_patch, __pud_huge_patch_end;
+#endif
void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte);