linux/clocksource.h: Extract common header for vDSO (14ee2ac6) · Commits · 戴 / test

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 clocksource.h into linux and common headers to make the latter suitable for inclusion in the vDSO library. Signed-off-by:

Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by:

Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20200320145351.32292-9-vincenzo.frascino@arm.com

include/linux/clocksource.h

+1 −10

Original line number	Diff line number	Diff line
		@@ -28,16 +28,7 @@ struct module;
		#include <asm/clocksource.h>
		#endif

		enum vdso_clock_mode {
		VDSO_CLOCKMODE_NONE,
		#ifdef CONFIG_GENERIC_GETTIMEOFDAY
		VDSO_ARCH_CLOCKMODES,
		#endif
		VDSO_CLOCKMODE_MAX,

		/* Indicator for time namespace VDSO */
		VDSO_CLOCKMODE_TIMENS = INT_MAX
		};
		#include <vdso/clocksource.h>

		/**
		* struct clocksource - hardware abstraction for a free running counter

include/vdso/clocksource.h

0 → 100644

+23 −0

Original line number	Diff line number	Diff line
		/* SPDX-License-Identifier: GPL-2.0 */
		#ifndef __VDSO_CLOCKSOURCE_H
		#define __VDSO_CLOCKSOURCE_H

		#include <vdso/limits.h>

		#if defined(CONFIG_ARCH_CLOCKSOURCE_DATA) \|\| \
		defined(CONFIG_GENERIC_GETTIMEOFDAY)
		#include <asm/vdso/clocksource.h>
		#endif /* CONFIG_ARCH_CLOCKSOURCE_DATA \|\| CONFIG_GENERIC_GETTIMEOFDAY */

		enum vdso_clock_mode {
		VDSO_CLOCKMODE_NONE,
		#ifdef CONFIG_GENERIC_GETTIMEOFDAY
		VDSO_ARCH_CLOCKMODES,
		#endif
		VDSO_CLOCKMODE_MAX,

		/* Indicator for time namespace VDSO */
		VDSO_CLOCKMODE_TIMENS = INT_MAX
		};

		#endif /* __VDSO_CLOCKSOURCE_H */

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