mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-19 02:34:01 +08:00
bffd972347
... independent of __ARCH_HAS_5LEVEL_HACK This came up when removing __ARCH_HAS_5LEVEL_HACK for ARC as code bloat. With this patch we see the following code reduction | bloat-o-meter2 vmlinux-C-elide-pud_free_tlb vmlinux-D-elide-p4d_free_tlb | add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-104 (-104) | function old new delta | free_pgd_range 552 422 -130 | Total: Before=4137172, After=4137042, chg -1.000000% Link: http://lkml.kernel.org/r/20191016162400.14796-4-vgupta@synopsys.com Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Nick Piggin <npiggin@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
59 lines
1.3 KiB
C
59 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _5LEVEL_FIXUP_H
|
|
#define _5LEVEL_FIXUP_H
|
|
|
|
#define __ARCH_HAS_5LEVEL_HACK
|
|
#define __PAGETABLE_P4D_FOLDED 1
|
|
|
|
#define P4D_SHIFT PGDIR_SHIFT
|
|
#define P4D_SIZE PGDIR_SIZE
|
|
#define P4D_MASK PGDIR_MASK
|
|
#define MAX_PTRS_PER_P4D 1
|
|
#define PTRS_PER_P4D 1
|
|
|
|
#define p4d_t pgd_t
|
|
|
|
#define pud_alloc(mm, p4d, address) \
|
|
((unlikely(pgd_none(*(p4d))) && __pud_alloc(mm, p4d, address)) ? \
|
|
NULL : pud_offset(p4d, address))
|
|
|
|
#define p4d_alloc(mm, pgd, address) (pgd)
|
|
#define p4d_offset(pgd, start) (pgd)
|
|
|
|
#ifndef __ASSEMBLY__
|
|
static inline int p4d_none(p4d_t p4d)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int p4d_bad(p4d_t p4d)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int p4d_present(p4d_t p4d)
|
|
{
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
#define p4d_ERROR(p4d) do { } while (0)
|
|
#define p4d_clear(p4d) pgd_clear(p4d)
|
|
#define p4d_val(p4d) pgd_val(p4d)
|
|
#define p4d_populate(mm, p4d, pud) pgd_populate(mm, p4d, pud)
|
|
#define p4d_populate_safe(mm, p4d, pud) pgd_populate(mm, p4d, pud)
|
|
#define p4d_page(p4d) pgd_page(p4d)
|
|
#define p4d_page_vaddr(p4d) pgd_page_vaddr(p4d)
|
|
|
|
#define __p4d(x) __pgd(x)
|
|
#define set_p4d(p4dp, p4d) set_pgd(p4dp, p4d)
|
|
|
|
#undef p4d_free_tlb
|
|
#define p4d_free_tlb(tlb, x, addr) do { } while (0)
|
|
#define p4d_free(mm, x) do { } while (0)
|
|
|
|
#undef p4d_addr_end
|
|
#define p4d_addr_end(addr, end) (end)
|
|
|
|
#endif
|