From d195b71bad4347d2df51072a537f922546a904f1 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Sat, 27 Sep 2014 21:30:57 -0700 Subject: sparc64: Kill unnecessary tables and increase MAX_BANKS. swapper_low_pmd_dir and swapper_pud_dir are actually completely useless and unnecessary. We just need swapper_pg_dir[]. Naturally the other page table chunks will be allocated on an as-needed basis. Since the kernel actually accesses these tables in the PAGE_OFFSET view, there is not even a TLB locality advantage of placing them in the kernel image. Use the hard coded vmlinux.ld.S slot for swapper_pg_dir which is naturally page aligned. Increase MAX_BANKS to 1024 in order to handle heavily fragmented virtual guests. Even with this MAX_BANKS increase, the kernel is 20K+ smaller. Signed-off-by: David S. Miller Acked-by: Bob Picco --- arch/sparc/include/asm/pgtable_64.h | 1 - 1 file changed, 1 deletion(-) (limited to 'arch/sparc/include') diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h index c0939228e4b1..bfeb626085ac 100644 --- a/arch/sparc/include/asm/pgtable_64.h +++ b/arch/sparc/include/asm/pgtable_64.h @@ -927,7 +927,6 @@ static inline void __set_pte_at(struct mm_struct *mm, unsigned long addr, #endif extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; -extern pmd_t swapper_low_pmd_dir[PTRS_PER_PMD]; void paging_init(void); unsigned long find_ecache_flush_span(unsigned long size); -- cgit v1.2.3