From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vineet Gupta Subject: [PATCH 0/3] eldie generated code for folded p4d/pud Date: Wed, 9 Oct 2019 15:26:55 -0700 Message-ID: <20191009222658.961-1-vgupta@synopsys.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: Sender: linux-kernel-owner@vger.kernel.org To: linux-mm@kvack.org Cc: linux-snps-arc@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, Arnd Bergmann , Will Deacon , "Aneesh Kumar K . V" , Andrew Morton , Nick Piggin , Peter Zijlstra , "Kirill A . Shutemov" , Vineet Gupta List-Id: linux-arch.vger.kernel.org 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 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtprelay-out1.synopsys.com ([198.182.61.142]:55028 "EHLO smtprelay-out1.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731589AbfJIW1I (ORCPT ); Wed, 9 Oct 2019 18:27:08 -0400 From: Vineet Gupta Subject: [PATCH 0/3] eldie generated code for folded p4d/pud Date: Wed, 9 Oct 2019 15:26:55 -0700 Message-ID: <20191009222658.961-1-vgupta@synopsys.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-arch-owner@vger.kernel.org List-ID: To: linux-mm@kvack.org Cc: linux-snps-arc@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, Arnd Bergmann , Will Deacon , "Aneesh Kumar K . V" , Andrew Morton , Nick Piggin , Peter Zijlstra , "Kirill A . Shutemov" , Vineet Gupta Message-ID: <20191009222655.EnRSZHl1QsDsgPxOfKnnonxeKd8toIgfwMDMSEYUrDs@z> 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