Commit 5b47aba8 authored by Thomas Weißschuh's avatar Thomas Weißschuh Committed by Thomas Gleixner
Browse files

vdso: Introduce vdso/align.h 



The vDSO implementation can only include headers from the vdso/
namespace. To enable the usage of the ALIGN() macro from the vDSO, move
linux/align.h to vdso/align.h wholly.
As the only dependency linux/const.h is only a wrapper around
vdso/const.h anyways adapt that dependency.

Also provide a compatibility wrapper linux/align.h.

Signed-off-by: default avatarThomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20250204-vdso-store-rng-v3-3-13a4669dfc8c@linutronix.de
parent 30533a55

include/linux/align.h

+1 −9
Original line number Diff line number Diff line
@@ -2,14 +2,6 @@ 
#ifndef _LINUX_ALIGN_H

#define _LINUX_ALIGN_H



#include <linux/const.h>



/* @a is a power of 2 value */

#define ALIGN(x, a)		__ALIGN_KERNEL((x), (a))

#define ALIGN_DOWN(x, a)	__ALIGN_KERNEL((x) - ((a) - 1), (a))

#define __ALIGN_MASK(x, mask)	__ALIGN_KERNEL_MASK((x), (mask))

#define PTR_ALIGN(p, a)		((typeof(p))ALIGN((unsigned long)(p), (a)))

#define PTR_ALIGN_DOWN(p, a)	((typeof(p))ALIGN_DOWN((unsigned long)(p), (a)))

#define IS_ALIGNED(x, a)		(((x) & ((typeof(x))(a) - 1)) == 0)

#include <vdso/align.h>



#endif	/* _LINUX_ALIGN_H */

include/vdso/align.h

0 → 100644
+15 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */

#ifndef __VDSO_ALIGN_H

#define __VDSO_ALIGN_H



#include <vdso/const.h>



/* @a is a power of 2 value */

#define ALIGN(x, a)		__ALIGN_KERNEL((x), (a))

#define ALIGN_DOWN(x, a)	__ALIGN_KERNEL((x) - ((a) - 1), (a))

#define __ALIGN_MASK(x, mask)	__ALIGN_KERNEL_MASK((x), (mask))

#define PTR_ALIGN(p, a)		((typeof(p))ALIGN((unsigned long)(p), (a)))

#define PTR_ALIGN_DOWN(p, a)	((typeof(p))ALIGN_DOWN((unsigned long)(p), (a)))

#define IS_ALIGNED(x, a)		(((x) & ((typeof(x))(a) - 1)) == 0)



#endif	/* __VDSO_ALIGN_H */