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| author | Guo Ren <guoren@linux.alibaba.com> | 2021-01-17 16:38:18 +0100 |
|---|---|---|
| committer | Guo Ren <guoren@linux.alibaba.com> | 2021-02-27 09:35:09 +0100 |
| commit | 0d3b051adbb72ed81956447d0d1e54d5943ee6f5 (patch) | |
| tree | 433b4210fd30da045a8a7f8709740a8787d85ac0 /arch/csky/include/asm/vdso/clocksource.h | |
| parent | csky: kprobe: Fixup code in simulate without 'long' (diff) | |
| download | linux-0d3b051adbb72ed81956447d0d1e54d5943ee6f5.tar.xz linux-0d3b051adbb72ed81956447d0d1e54d5943ee6f5.zip | |
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>
Diffstat (limited to 'arch/csky/include/asm/vdso/clocksource.h')
| -rw-r--r-- | arch/csky/include/asm/vdso/clocksource.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/csky/include/asm/vdso/clocksource.h b/arch/csky/include/asm/vdso/clocksource.h new file mode 100644 index 000000000000..dfca7b4724b7 --- /dev/null +++ b/arch/csky/include/asm/vdso/clocksource.h @@ -0,0 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ASM_VDSO_CSKY_CLOCKSOURCE_H +#define __ASM_VDSO_CSKY_CLOCKSOURCE_H + +#define VDSO_ARCH_CLOCKMODES \ + VDSO_CLOCKMODE_ARCHTIMER + +#endif /* __ASM_VDSO_CSKY_CLOCKSOURCE_H */ |