From patchwork Tue Mar 17 12:22:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vincenzo Frascino X-Patchwork-Id: 11442713 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 DEAE292A for ; Tue, 17 Mar 2020 12:23:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 901D320770 for ; Tue, 17 Mar 2020 12:23:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727178AbgCQMXg (ORCPT ); Tue, 17 Mar 2020 08:23:36 -0400 Received: from foss.arm.com ([217.140.110.172]:36908 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727138AbgCQMXg (ORCPT ); Tue, 17 Mar 2020 08:23:36 -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 4BD08FEC; Tue, 17 Mar 2020 05:23:36 -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 569503F534; Tue, 17 Mar 2020 05:23:33 -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 v4 14/26] linux/ktime.h: Extract common header for vDSO Date: Tue, 17 Mar 2020 12:22:08 +0000 Message-Id: <20200317122220.30393-15-vincenzo.frascino@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200317122220.30393-1-vincenzo.frascino@arm.com> References: <20200317122220.30393-1-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. Split ktime.h into linux and common headers to make the latter suitable for inclusion in the vDSO library. Signed-off-by: Vincenzo Frascino --- include/linux/ktime.h | 9 +-------- include/vdso/ktime.h | 16 ++++++++++++++++ 2 files changed, 17 insertions(+), 8 deletions(-) create mode 100644 include/vdso/ktime.h diff --git a/include/linux/ktime.h b/include/linux/ktime.h index b2bb44f87f5a..1fcfce97a020 100644 --- a/include/linux/ktime.h +++ b/include/linux/ktime.h @@ -253,14 +253,7 @@ static inline __must_check bool ktime_to_timespec64_cond(const ktime_t kt, } } -/* - * The resolution of the clocks. The resolution value is returned in - * the clock_getres() system call to give application programmers an - * idea of the (in)accuracy of timers. Timer values are rounded up to - * this resolution values. - */ -#define LOW_RES_NSEC TICK_NSEC -#define KTIME_LOW_RES (LOW_RES_NSEC) +#include static inline ktime_t ns_to_ktime(u64 ns) { diff --git a/include/vdso/ktime.h b/include/vdso/ktime.h new file mode 100644 index 000000000000..a0fd07239e0e --- /dev/null +++ b/include/vdso/ktime.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __VDSO_KTIME_H +#define __VDSO_KTIME_H + +#include + +/* + * The resolution of the clocks. The resolution value is returned in + * the clock_getres() system call to give application programmers an + * idea of the (in)accuracy of timers. Timer values are rounded up to + * this resolution values. + */ +#define LOW_RES_NSEC TICK_NSEC +#define KTIME_LOW_RES (LOW_RES_NSEC) + +#endif /* __VDSO_KTIME_H */