mirror of
https://github.com/brain-hackers/linux-brain.git
synced 2024-06-09 15:26:21 +09:00
13224794cb
Patch series "mm: remove quicklist page table caches". A while ago Nicholas proposed to remove quicklist page table caches [1]. I've rebased his patch on the curren upstream and switched ia64 and sh to use generic versions of PTE allocation. [1] https://lore.kernel.org/linux-mm/20190711030339.20892-1-npiggin@gmail.com This patch (of 3): Remove page table allocator "quicklists". These have been around for a long time, but have not got much traction in the last decade and are only used on ia64 and sh architectures. The numbers in the initial commit look interesting but probably don't apply anymore. If anybody wants to resurrect this it's in the git history, but it's unhelpful to have this code and divergent allocator behaviour for minor archs. Also it might be better to instead make more general improvements to page allocator if this is still so slow. Link: http://lkml.kernel.org/r/1565250728-21721-2-git-send-email-rppt@linux.ibm.com Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 1994 - 2001, 2003 by Ralf Baechle
|
|
* Copyright (C) 1999, 2000, 2001 Silicon Graphics, Inc.
|
|
*/
|
|
|
|
#ifndef _ASM_NIOS2_PGALLOC_H
|
|
#define _ASM_NIOS2_PGALLOC_H
|
|
|
|
#include <linux/mm.h>
|
|
|
|
#include <asm-generic/pgalloc.h> /* for pte_{alloc,free}_one */
|
|
|
|
static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
|
|
pte_t *pte)
|
|
{
|
|
set_pmd(pmd, __pmd((unsigned long)pte));
|
|
}
|
|
|
|
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
|
|
pgtable_t pte)
|
|
{
|
|
set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
|
|
}
|
|
#define pmd_pgtable(pmd) pmd_page(pmd)
|
|
|
|
/*
|
|
* Initialize a new pmd table with invalid pointers.
|
|
*/
|
|
extern void pmd_init(unsigned long page, unsigned long pagetable);
|
|
|
|
extern pgd_t *pgd_alloc(struct mm_struct *mm);
|
|
|
|
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
|
|
{
|
|
free_pages((unsigned long)pgd, PGD_ORDER);
|
|
}
|
|
|
|
#define __pte_free_tlb(tlb, pte, addr) \
|
|
do { \
|
|
pgtable_page_dtor(pte); \
|
|
tlb_remove_page((tlb), (pte)); \
|
|
} while (0)
|
|
|
|
#endif /* _ASM_NIOS2_PGALLOC_H */
|