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| author | David S. Miller <davem@davemloft.net> | 2014-09-28 08:30:57 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-10-06 03:53:40 +0400 |
| commit | d195b71bad4347d2df51072a537f922546a904f1 (patch) | |
| tree | 362c818469223f5ff4eb7476b485f6b55afb4cce /arch/sparc/include | |
| parent | ee6a9333fa58e11577c1b531b8e0f5ffc0fd6f50 (diff) | |
| download | linux-d195b71bad4347d2df51072a537f922546a904f1.tar.xz | |
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 <davem@davemloft.net>
Acked-by: Bob Picco <bob.picco@oracle.com>
Diffstat (limited to 'arch/sparc/include')
| -rw-r--r-- | arch/sparc/include/asm/pgtable_64.h | 1 |
1 files changed, 0 insertions, 1 deletions
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); |