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

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commit 29d44cce32 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>
This commit is contained in:
Tiezhu Yang 2024-12-19 19:15:06 +08:00 committed by Greg Kroah-Hartman
parent f3ff759ec6
commit 48d07e3a18
1 changed files with 2 additions and 0 deletions
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tools/testing/selftests/bpf/sdt.h
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@ -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