From patchwork Fri Mar 20 14:53:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vincenzo Frascino X-Patchwork-Id: 11449459 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 877271894 for ; Fri, 20 Mar 2020 14:54:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 718712078C for ; Fri, 20 Mar 2020 14:54:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727417AbgCTOy5 (ORCPT ); Fri, 20 Mar 2020 10:54:57 -0400 Received: from foss.arm.com ([217.140.110.172]:50122 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726814AbgCTOy5 (ORCPT ); Fri, 20 Mar 2020 10:54:57 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 6AEB47FA; Fri, 20 Mar 2020 07:54:56 -0700 (PDT) Received: from e119884-lin.cambridge.arm.com (e119884-lin.cambridge.arm.com [10.1.196.72]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 75F393F792; Fri, 20 Mar 2020 07:54:53 -0700 (PDT) From: Vincenzo Frascino To: linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com, linux-mips@vger.kernel.org, x86@kernel.org Cc: Vincenzo Frascino , Catalin Marinas , Will Deacon , Arnd Bergmann , Russell King , Paul Burton , Thomas Gleixner , Andy Lutomirski , Ingo Molnar , Borislav Petkov , Stephen Boyd , Mark Salyzyn , Kees Cook , Peter Collingbourne , Dmitry Safonov <0x7f454c46@gmail.com>, Andrei Vagin , Nick Desaulniers , Marc Zyngier , Mark Rutland Subject: [PATCH v5 04/26] x86:Introduce asm/vdso/clocksource.h Date: Fri, 20 Mar 2020 14:53:29 +0000 Message-Id: <20200320145351.32292-5-vincenzo.frascino@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200320145351.32292-1-vincenzo.frascino@arm.com> References: <20200320145351.32292-1-vincenzo.frascino@arm.com> MIME-Version: 1.0 Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org The vDSO library should only include the necessary headers required for a userspace library (UAPI and a minimal set of kernel headers). To make this possible it is necessary to isolate from the kernel headers the common parts that are strictly necessary to build the library. Introduce asm/vdso/clocksource.h to contain all the arm64 specific functions that are suitable for vDSO inclusion. This header will be required by a future patch that will generalize vdso/clocksource.h. Cc: Thomas Gleixner Cc: Andy Lutomirski Cc: Ingo Molnar Cc: Borislav Petkov Signed-off-by: Vincenzo Frascino --- arch/x86/include/asm/clocksource.h | 5 +---- arch/x86/include/asm/vdso/clocksource.h | 10 ++++++++++ 2 files changed, 11 insertions(+), 4 deletions(-) create mode 100644 arch/x86/include/asm/vdso/clocksource.h diff --git a/arch/x86/include/asm/clocksource.h b/arch/x86/include/asm/clocksource.h index d561db67f96d..dc9dc7b3911a 100644 --- a/arch/x86/include/asm/clocksource.h +++ b/arch/x86/include/asm/clocksource.h @@ -4,10 +4,7 @@ #ifndef _ASM_X86_CLOCKSOURCE_H #define _ASM_X86_CLOCKSOURCE_H -#define VDSO_ARCH_CLOCKMODES \ - VDSO_CLOCKMODE_TSC, \ - VDSO_CLOCKMODE_PVCLOCK, \ - VDSO_CLOCKMODE_HVCLOCK +#include extern unsigned int vclocks_used; diff --git a/arch/x86/include/asm/vdso/clocksource.h b/arch/x86/include/asm/vdso/clocksource.h new file mode 100644 index 000000000000..119ac8612d89 --- /dev/null +++ b/arch/x86/include/asm/vdso/clocksource.h @@ -0,0 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASM_VDSO_CLOCKSOURCE_H +#define __ASM_VDSO_CLOCKSOURCE_H + +#define VDSO_ARCH_CLOCKMODES \ + VDSO_CLOCKMODE_TSC, \ + VDSO_CLOCKMODE_PVCLOCK, \ + VDSO_CLOCKMODE_HVCLOCK + +#endif /* __ASM_VDSO_CLOCKSOURCE_H */