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BACKPORT: arm64: Introduce asm/vdso/clocksource.h

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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.

Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lkml.kernel.org/r/20200320145351.32292-7-vincenzo.frascino@arm.com
(cherry picked from commit 31fdcac07f679848b5ba371500292b685fd39217)
Signed-off-by: Mark Salyzyn <salyzyn@google.com>
Bug: 154668398
Change-Id: I14a1ecd16f960d7b70388ee3587dc5abe63e2f6a
This commit is contained in:
Vincenzo Frascino
2020-03-20 14:53:31 +00:00
committed by Alistair Delva
parent 1e46fc719b
commit e10eb53e71
2 changed files with 10 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
arch/arm64/include/asm/clocksource.h
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@@ -2,8 +2,6 @@
#ifndef _ASM_CLOCKSOURCE_H #ifndef _ASM_CLOCKSOURCE_H
#define _ASM_CLOCKSOURCE_H #define _ASM_CLOCKSOURCE_H
struct arch_clocksource_data { #include <asm/vdso/clocksource.h>
bool vdso_direct; /* Usable for direct VDSO access? */
};
#endif #endif

9
arch/arm64/include/asm/vdso/clocksource.h Normal file
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@@ -0,0 +1,9 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_VDSOCLOCKSOURCE_H
#define __ASM_VDSOCLOCKSOURCE_H
struct arch_clocksource_data {
bool vdso_direct; /* Usable for direct VDSO access? */
};
#endif