1
0
Fork 0
mirror of synced 2025-03-06 20:59:54 +01:00
linux/arch/csky/include/asm/vdso/vsyscall.h
Guo Ren 0d3b051adb csky: Add VDSO with GENERIC_GETTIMEOFDAY, GENERIC_TIME_VSYSCALL, HAVE_GENERIC_VDSO
It could help to reduce the latency of the time-related functions
in user space.

We have referenced arm's and riscv's implementation for the patch.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Cc: Vincent Chen <vincent.chen@sifive.com>
Cc: Arnd Bergmann <arnd@arndb.de>
2021-02-27 16:35:09 +08:00

22 lines
454 B
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_VDSO_CSKY_VSYSCALL_H
#define __ASM_VDSO_CSKY_VSYSCALL_H
#ifndef __ASSEMBLY__
#include <vdso/datapage.h>
extern struct vdso_data *vdso_data;
static __always_inline struct vdso_data *__csky_get_k_vdso_data(void)
{
return vdso_data;
}
#define __arch_get_k_vdso_data __csky_get_k_vdso_data
#include <asm-generic/vdso/vsyscall.h>
#endif /* !__ASSEMBLY__ */
#endif /* __ASM_VDSO_CSKY_VSYSCALL_H */