4 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	e6ee90233e	LoongArch: Fix build errors for tinyconfig ... Building loongarch:tinyconfig fails with the following error. ./arch/loongarch/include/asm/page.h: In function 'pfn_valid': ./arch/loongarch/include/asm/page.h:42:32: error: 'PHYS_OFFSET' undeclared Add the missing include file and fix succeeding vdso errors. Fixes: 09cfefb7fa70 ("LoongArch: Add memory management") Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>	2022-07-07 17:41:01 +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
Huacai Chen	fa96b57c14	LoongArch: Add build infrastructure ... Add Kbuild, Makefile, Kconfig and link script for LoongArch build infrastructure. Reviewed-by: Guo Ren <guoren@kernel.org> 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 20:09:27 +08:00