mirror of
https://github.com/torvalds/linux.git
synced 2025-04-12 16:47:42 +00:00
4eb0833d7d
CSKY selects GENERIC_TIME_VSYSCALL. GENERIC_TIME_VSYSCALL dependent ifdeffery is superfluous. Clean it up. Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: Guo Ren <guoren@kernel.org> Link: https://lore.kernel.org/r/20240219153939.75719-4-anna-maria@linutronix.de
23 lines
724 B
C
23 lines
724 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
|
|
#ifndef __ASM_CSKY_VDSO_H
|
|
#define __ASM_CSKY_VDSO_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
/*
|
|
* The VDSO symbols are mapped into Linux so we can just use regular symbol
|
|
* addressing to get their offsets in userspace. The symbols are mapped at an
|
|
* offset of 0, but since the linker must support setting weak undefined
|
|
* symbols to the absolute address 0 it also happens to support other low
|
|
* addresses even when the code model suggests those low addresses would not
|
|
* otherwise be available.
|
|
*/
|
|
#define VDSO_SYMBOL(base, name) \
|
|
({ \
|
|
extern const char __vdso_##name[]; \
|
|
(void __user *)((unsigned long)(base) + __vdso_##name); \
|
|
})
|
|
|
|
#endif /* __ASM_CSKY_VDSO_H */
|