Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752710AbcDZQjU (ORCPT ); Tue, 26 Apr 2016 12:39:20 -0400 Received: from mail.kernel.org ([198.145.29.136]:57725 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751890AbcDZQjR (ORCPT ); Tue, 26 Apr 2016 12:39:17 -0400 From: Andy Lutomirski To: x86@kernel.org Cc: linux-kernel@vger.kernel.org, Peter Zijlstra , Borislav Petkov , Andy Lutomirski Subject: [PATCH v2 3/5] x86/mm: Build arch/x86/mm/tlb.c even on !SMP Date: Tue, 26 Apr 2016 09:39:07 -0700 Message-Id: X-Mailer: git-send-email 2.5.5 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1746 Lines: 56 Currently all of the functions that live in tlb.c are inlined on !SMP builds. One can debate whether this is a good idea (in many respects the code in tlb.c is better than the inlined UP code). Regardless, I want to add code that needs to be built on UP and SMP kernels and relates to tlb flushing, so arrange for tlb.c to be compiled unconditionally. Signed-off-by: Andy Lutomirski --- arch/x86/mm/Makefile | 3 +-- arch/x86/mm/tlb.c | 4 ++++ 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/arch/x86/mm/Makefile b/arch/x86/mm/Makefile index f98913258c63..62c0043a5fd5 100644 --- a/arch/x86/mm/Makefile +++ b/arch/x86/mm/Makefile @@ -2,7 +2,7 @@ KCOV_INSTRUMENT_tlb.o := n obj-y := init.o init_$(BITS).o fault.o ioremap.o extable.o pageattr.o mmap.o \ - pat.o pgtable.o physaddr.o gup.o setup_nx.o + pat.o pgtable.o physaddr.o gup.o setup_nx.o tlb.o # Make sure __phys_addr has no stackprotector nostackp := $(call cc-option, -fno-stack-protector) @@ -12,7 +12,6 @@ CFLAGS_setup_nx.o := $(nostackp) CFLAGS_fault.o := -I$(src)/../include/asm/trace obj-$(CONFIG_X86_PAT) += pat_rbtree.o -obj-$(CONFIG_SMP) += tlb.o obj-$(CONFIG_X86_32) += pgtable_32.o iomap_32.o diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index 8f4cc3dfac32..3f7a7939e65e 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -28,6 +28,8 @@ * Implement flush IPI by CALL_FUNCTION_VECTOR, Alex Shi */ +#ifdef CONFIG_SMP + struct flush_tlb_info { struct mm_struct *flush_mm; unsigned long flush_start; @@ -347,3 +349,5 @@ static int __init create_tlb_single_page_flush_ceiling(void) return 0; } late_initcall(create_tlb_single_page_flush_ceiling); + +#endif /* CONFIG_SMP */ -- 2.5.5