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mm: consolidate pgtable_cache_init() and pgd_cache_init()

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/1566457046-22637-1-git-send-email-rppt@linux.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Will Deacon <will@kernel.org>		[arm64]
Acked-by: Thomas Gleixner <tglx@linutronix.de>	[x86]
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Este cometimento está contido em:
Mike Rapoport
2019-09-23 15:35:31 -07:00
cometido por Linus Torvalds
ascendente 1b9a9d8564
cometimento 782de70c42
36 ficheiros modificados com 5 adições e 130 eliminações

Ver ficheiro

@@ -176,9 +176,4 @@ pgprot_t pgprot_dmacoherent(pgprot_t prot);
#include <asm-generic/pgtable.h>
#endif /* !__ASSEMBLY__ */
/*
* No page table caches to initialise
*/
#define pgtable_cache_init() do { } while (0)
#endif /* _M68K_PGTABLE_H */

Ver ficheiro

@@ -44,11 +44,6 @@ extern void paging_init(void);
*/
#define ZERO_PAGE(vaddr) (virt_to_page(0))
/*
* No page table caches to initialise.
*/
#define pgtable_cache_init() do { } while (0)
/*
* All 32bit addresses are effectively valid for vmalloc...
* Sort of meaningless for non-VM targets.