selftests/bpf: Use asm constraint "m" for LoongArch

BugLink: https://bugs.launchpad.net/bugs/2102266

commit 29d44cce324dab2bd86c447071a596262e7109b6 upstream.

Currently, LoongArch LLVM does not support the constraint "o" and no plan
to support it, it only supports the similar constraint "m", so change the
constraints from "nor" in the "else" case to arch-specific "nmr" to avoid
the build error such as "unexpected asm memory constraint" for LoongArch.

Fixes: 630301b0d5 ("selftests/bpf: Add basic USDT selftests")
Suggested-by: Weining Lu <luweining@loongson.cn>
Suggested-by: Li Chen <chenli@loongson.cn>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Cc: stable@vger.kernel.org
Link: https://llvm.org/docs/LangRef.html#supported-constraint-code-list
Link: https://github.com/llvm/llvm-project/blob/main/llvm/lib/Target/LoongArch/LoongArchISelDAGToDAG.cpp#L172
Link: https://lore.kernel.org/bpf/20241219111506.20643-1-yangtiezhu@loongson.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Mehmet Basaran <mehmet.basaran@canonical.com>

This commit is contained in:

Tiezhu Yang

2025-03-14 12:03:09 +09:00

committed by

Mehmet Basaran

parent 371fa3d224

commit 57afa036f8

1 changed files with 2 additions and 0 deletions

									
										tools/testing/selftests/bpf/sdt.h
									
		+2
		
												View File
												
				@@ -102,6 +102,8 @@

				# define STAP_SDT_ARG_CONSTRAINT        nZr

				# elif defined __arm__

				# define STAP_SDT_ARG_CONSTRAINT        g

				# elif defined __loongarch__

				# define STAP_SDT_ARG_CONSTRAINT        nmr

				# else

				# define STAP_SDT_ARG_CONSTRAINT        nor

				# endif