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2 commits

Author SHA1 Message Date
Huacai Chen
dce6098b22 LoongArch: Add vDSO syscall __vdso_getcpu() 
We test 20 million times of getcpu(), the real syscall version take 25
seconds, while the vsyscall version take only 2.4 seconds.

Signed-off-by: Rui Wang <wangrui@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
 2022-08-12 13:10:11 +08:00
Huacai Chen
c6b99bed6b LoongArch: Add VDSO and VSYSCALL support 
Add VDSO and VSYSCALL support (sigreturn, gettimeofday and its friends)
for LoongArch.

Reviewed-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
 2022-06-03 20:09:28 +08:00