From: Vineet.Gupta1@synopsys.com (Vineet Gupta)
To: linux-snps-arc@lists.infradead.org
Subject: [PATCH 0/3] eldie generated code for folded p4d/pud
Date: Wed, 9 Oct 2019 15:26:55 -0700 [thread overview]
Message-ID: <20191009222658.961-1-vgupta@synopsys.com> (raw)
Hi,
This series elides extraneous generate code for folded p4d/pud.
This came up when trying to remove __ARCH_USE_5LEVEL_HACK from ARC port.
The code saving are not a while lot, but still worthwhile IMHO.
bloat-o-meter2 vmlinux-A-baseline vmlinux-E-elide-p?d_clear_bad
add/remove: 0/2 grow/shrink: 0/1 up/down: 0/-146 (-146)
function old new delta
p4d_clear_bad 2 - -2
pud_clear_bad 20 - -20
free_pgd_range 546 422 -124
Total: Before=4137148, After=4137002, chg -1.000000%
Thx,
-Vineet
Vineet Gupta (3):
asm-generic/tlb: stub out pud_free_tlb() if __PAGETABLE_PUD_FOLDED ...
asm-generic/tlb: stub out p4d_free_tlb() if __PAGETABLE_P4D_FOLDED ...
asm-generic/mm: stub out p{4,d}d_clear_bad() if
__PAGETABLE_P{4,u}D_FOLDED
include/asm-generic/4level-fixup.h | 2 --
include/asm-generic/5level-fixup.h | 2 --
include/asm-generic/pgtable.h | 11 +++++++++++
include/asm-generic/tlb.h | 8 ++++++--
mm/pgtable-generic.c | 4 ++++
5 files changed, 21 insertions(+), 6 deletions(-)
--
2.20.1
next reply other threads:[~2019-10-09 22:26 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-09 22:26 Vineet Gupta [this message]
2019-10-09 22:26 ` [PATCH 1/3] asm-generic/tlb: stub out pud_free_tlb() if __PAGETABLE_PUD_FOLDED Vineet Gupta
2019-10-09 22:26 ` [PATCH 2/3] asm-generic/tlb: stub out p4d_free_tlb() if __PAGETABLE_P4D_FOLDED Vineet Gupta
2019-10-09 22:26 ` [PATCH 3/3] asm-generic/mm: stub out p{4, d}d_clear_bad() if __PAGETABLE_P{4, u}D_FOLDED Vineet Gupta
2019-10-10 7:29 ` [PATCH 0/3] eldie generated code for folded p4d/pud Peter Zijlstra
2019-10-10 8:56 ` Kirill A. Shutemov
2019-10-10 20:05 ` Vineet Gupta
2019-10-11 12:19 ` Kirill A. Shutemov
2019-10-11 22:38 ` [RFC] asm-generic/tlb: stub out pmd_free_tlb() if __PAGETABLE_PMD_FOLDED Vineet Gupta
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