linux/jiffies.h: Extract common header for vDSO (97b01d2e) · 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 jiffies.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/20200320145351.32292-14-vincenzo.frascino@arm.com

include/linux/jiffies.h

+1 −3

Original line number	Diff line number	Diff line
		@@ -8,6 +8,7 @@
		#include <linux/types.h>
		#include <linux/time.h>
		#include <linux/timex.h>
		#include <vdso/jiffies.h>
		#include <asm/param.h> /* for HZ */
		#include <generated/timeconst.h>

		@@ -59,9 +60,6 @@

		extern int register_refined_jiffies(long clock_tick_rate);

		/* TICK_NSEC is the time between ticks in nsec assuming SHIFTED_HZ */
		#define TICK_NSEC ((NSEC_PER_SEC+HZ/2)/HZ)

		/* TICK_USEC is the time between ticks in usec assuming SHIFTED_HZ */
		#define TICK_USEC ((USEC_PER_SEC + HZ/2) / HZ)

include/vdso/jiffies.h

0 → 100644

+11 −0

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

		#include <asm/param.h> /* for HZ */
		#include <vdso/time64.h>

		/* TICK_NSEC is the time between ticks in nsec assuming SHIFTED_HZ */
		#define TICK_NSEC ((NSEC_PER_SEC+HZ/2)/HZ)

		#endif /* __VDSO_JIFFIES_H */

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