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| author | Vineet Gupta <Vineet.Gupta1@synopsys.com> | 2019-11-30 17:51:10 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-12-01 06:29:19 -0800 |
| commit | b08861d10bbeaae4d592d5cc00b2420e2e7ba3ac (patch) | |
| tree | 90b21fa5893875d4584838d2a21da908e71feec4 /include/asm-generic/tlb.h | |
| parent | 6aae3425aa9ca776e8201a93494a4a482353d2c3 (diff) | |
| download | lwn-b08861d10bbeaae4d592d5cc00b2420e2e7ba3ac.tar.gz lwn-b08861d10bbeaae4d592d5cc00b2420e2e7ba3ac.zip | |
asm-generic/tlb: stub out pud_free_tlb() if nopud ...
... independent of __ARCH_HAS_4LEVEL_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-B-elide-ARCH_USE_5LEVEL_HACK vmlinux-C-elide-pud_free_tlb
| add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-104 (-104)
| function old new delta
| free_pgd_range 656 552 -104
| Total: Before=4137276, After=4137172, chg -1.000000%
Note: The primary change is alternate defintion for pud_free_tlb() but
while there also removed empty stubs for __pud_free_tlb, which is anyhow
called only from pud_free_tlb()
Link: http://lkml.kernel.org/r/20191016162400.14796-3-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>
Diffstat (limited to 'include/asm-generic/tlb.h')
| -rw-r--r-- | include/asm-generic/tlb.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/include/asm-generic/tlb.h b/include/asm-generic/tlb.h index 04c0644006fd..5e0c2d01e656 100644 --- a/include/asm-generic/tlb.h +++ b/include/asm-generic/tlb.h @@ -584,7 +584,6 @@ static inline void tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vm } while (0) #endif -#ifndef __ARCH_HAS_4LEVEL_HACK #ifndef pud_free_tlb #define pud_free_tlb(tlb, pudp, address) \ do { \ @@ -594,7 +593,6 @@ static inline void tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vm __pud_free_tlb(tlb, pudp, address); \ } while (0) #endif -#endif #ifndef __ARCH_HAS_5LEVEL_HACK #ifndef p4d_free_tlb |