From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AE7FAFA3728 for ; Wed, 16 Oct 2019 16:24:18 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 73C7521928 for ; Wed, 16 Oct 2019 16:24:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=synopsys.com header.i=@synopsys.com header.b="mVnhWYOM" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 73C7521928 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=synopsys.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id D34558E0008; Wed, 16 Oct 2019 12:24:09 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 93E628E000A; Wed, 16 Oct 2019 12:24:09 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 7CFEC8E000A; Wed, 16 Oct 2019 12:24:09 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0116.hostedemail.com [216.40.44.116]) by kanga.kvack.org (Postfix) with ESMTP id 12F868E0009 for ; Wed, 16 Oct 2019 12:24:09 -0400 (EDT) Received: from smtpin08.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with SMTP id AC491182CEC9B for ; Wed, 16 Oct 2019 16:24:08 +0000 (UTC) X-FDA: 76050169776.08.year96_6f020dabdf34 X-HE-Tag: year96_6f020dabdf34 X-Filterd-Recvd-Size: 4845 Received: from smtprelay-out1.synopsys.com (us03-smtprelay2.synopsys.com [149.117.87.133]) by imf47.hostedemail.com (Postfix) with ESMTP for ; Wed, 16 Oct 2019 16:24:07 +0000 (UTC) Received: from mailhost.synopsys.com (dc8-mailhost1.synopsys.com [10.13.135.209]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by smtprelay-out1.synopsys.com (Postfix) with ESMTPS id 00485C3006; Wed, 16 Oct 2019 16:24:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=synopsys.com; s=mail; t=1571243046; bh=I83LSLyqJ3n0GzQ1+sT02W9/9Z0LbDBtsN2auGtpAaE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mVnhWYOMOtzVRxSoWjsbiXp8fHrwtS9YMzNXCKPRO/Aetx1ogSf706iRyJKzLeccp +kWaDRKzTqHzLJeRMn850VmVRlSFQtADSIHn8DyDbaAwIB6z/as9Lx2sXw4SU9zi05 7yv7p+QsBHdgUZlRQOKbfeJxZFmZr5BYVWNsobI2at++Vy8lbTYWs5RWMrnTjBWj4Z 1dNcYUW4+J2m/OA/5lsgEM3MINWYoh24edgnlUEhs47cpyZ7iVEjk282LLd6f/jYF9 8dJyW1YFv+TH605rIRuhV9FBAdsDMo2ahTxrZiskFJ8UaKYhONh4BTPa+48ErX7W2m uL1mSffnxaRrA== Received: from vineetg-Latitude-E7450.internal.synopsys.com (vineetg-latitude-e7450.internal.synopsys.com [10.10.161.61]) by mailhost.synopsys.com (Postfix) with ESMTP id 77CE9A007D; Wed, 16 Oct 2019 16:24:04 +0000 (UTC) From: Vineet Gupta 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" , Linus Torvalds , Vineet Gupta Subject: [PATCH v3 3/5] asm-generic/tlb: stub out p4d_free_tlb() if nop4d ... Date: Wed, 16 Oct 2019 09:23:58 -0700 Message-Id: <20191016162400.14796-4-vgupta@synopsys.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191016162400.14796-1-vgupta@synopsys.com> References: <20191016162400.14796-1-vgupta@synopsys.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: ... 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_tl= b | 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=3D4137172, After=3D4137042, chg -1.000000% Acked-by: Kirill A. Shutemov Acked-by: Linus Torvalds Signed-off-by: Vineet Gupta --- include/asm-generic/5level-fixup.h | 1 - include/asm-generic/pgtable-nop4d.h | 2 +- include/asm-generic/tlb.h | 2 -- 3 files changed, 1 insertion(+), 4 deletions(-) diff --git a/include/asm-generic/5level-fixup.h b/include/asm-generic/5le= vel-fixup.h index f6947da70d71..4c74b1c1d13b 100644 --- a/include/asm-generic/5level-fixup.h +++ b/include/asm-generic/5level-fixup.h @@ -51,7 +51,6 @@ static inline int p4d_present(p4d_t p4d) #undef p4d_free_tlb #define p4d_free_tlb(tlb, x, addr) do { } while (0) #define p4d_free(mm, x) do { } while (0) -#define __p4d_free_tlb(tlb, x, addr) do { } while (0) =20 #undef p4d_addr_end #define p4d_addr_end(addr, end) (end) diff --git a/include/asm-generic/pgtable-nop4d.h b/include/asm-generic/pg= table-nop4d.h index aebab905e6cd..ce2cbb3c380f 100644 --- a/include/asm-generic/pgtable-nop4d.h +++ b/include/asm-generic/pgtable-nop4d.h @@ -50,7 +50,7 @@ static inline p4d_t *p4d_offset(pgd_t *pgd, unsigned lo= ng address) */ #define p4d_alloc_one(mm, address) NULL #define p4d_free(mm, x) do { } while (0) -#define __p4d_free_tlb(tlb, x, a) do { } while (0) +#define p4d_free_tlb(tlb, x, a) do { } while (0) =20 #undef p4d_addr_end #define p4d_addr_end(addr, end) (end) diff --git a/include/asm-generic/tlb.h b/include/asm-generic/tlb.h index 5e0c2d01e656..05dddc17522b 100644 --- a/include/asm-generic/tlb.h +++ b/include/asm-generic/tlb.h @@ -594,7 +594,6 @@ static inline void tlb_end_vma(struct mmu_gather *tlb= , struct vm_area_struct *vm } while (0) #endif =20 -#ifndef __ARCH_HAS_5LEVEL_HACK #ifndef p4d_free_tlb #define p4d_free_tlb(tlb, pudp, address) \ do { \ @@ -603,7 +602,6 @@ static inline void tlb_end_vma(struct mmu_gather *tlb= , struct vm_area_struct *vm __p4d_free_tlb(tlb, pudp, address); \ } while (0) #endif -#endif =20 #endif /* CONFIG_MMU */ =20 --=20 2.20.1