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mm: consolidate pgtable_cache_init() and pgd_cache_init()

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Both pgtable_cache_init() and pgd_cache_init() are used to initialize kmem
cache for page table allocations on several architectures that do not use
PAGE_SIZE tables for one or more levels of the page table hierarchy.

Most architectures do not implement these functions and use __weak default
NOP implementation of pgd_cache_init().  Since there is no such default
for pgtable_cache_init(), its empty stub is duplicated among most
architectures.

Rename the definitions of pgd_cache_init() to pgtable_cache_init() and
drop empty stubs of pgtable_cache_init().

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Mike Rapoport <[email protected]>
Acked-by: Will Deacon <[email protected]>		[arm64]
Acked-by: Thomas Gleixner <[email protected]>	[x86]
Cc: Catalin Marinas <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Mike Rapoport 2019-09-23 15:35:31 -07:00 • committed by Linus Torvalds
commit 782de70c42
36 changed files with 5 additions and 130 deletions
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7
arch/microblaze/include/asm/pgtable.h
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@ -46,8 +46,6 @@ extern int mem_init_done;
#define swapper_pg_dir ((pgd_t *) NULL)
#define pgtable_cache_init() do {} while (0)
#define arch_enter_lazy_cpu_mode() do {} while (0)
#define pgprot_noncached_wc(prot) prot
@ -526,11 +524,6 @@ extern unsigned long iopa(unsigned long addr);
/* Needs to be defined here and not in linux/mm.h, as it is arch dependent */
#define kern_addr_valid(addr) (1)
/*
* No page table caches to initialise
*/
#define pgtable_cache_init() do { } while (0)
void do_page_fault(struct pt_regs *regs, unsigned long address,
unsigned long error_code);