[PATCH RFC bpf-next 1/3] selftests/bpf: Add __arch_loongarch macro to limit test cases

[Tiezhu Yang]

Make it possible to limit certain tests to loongarch, just like it is
already done for x86_64, arm64, riscv64, and s390x.

This is a follow up patch of:

  commit ee7fe84468b1 ("selftests/bpf: __arch_* macro to limit test cases to specific archs")
  commit 1e4e6b9e260d ("selftests/bpf: Add __arch_s390x macro")

Signed-off-by: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx>
---
 tools/testing/selftests/bpf/progs/bpf_misc.h | 1 +
 tools/testing/selftests/bpf/test_loader.c    | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/tools/testing/selftests/bpf/progs/bpf_misc.h b/tools/testing/selftests/bpf/progs/bpf_misc.h
index dcd78a3a9052..a8b14be3aa60 100644
--- a/tools/testing/selftests/bpf/progs/bpf_misc.h
+++ b/tools/testing/selftests/bpf/progs/bpf_misc.h
@@ -157,6 +157,7 @@
 #define __arch_arm64		__arch("ARM64")
 #define __arch_riscv64		__arch("RISCV64")
 #define __arch_s390x		__arch("s390x")
+#define __arch_loongarch	__arch("LOONGARCH")
 #define __caps_unpriv(caps)	__test_tag("test_caps_unpriv=" EXPAND_QUOTE(caps))
 #define __load_if_JITed()	__test_tag("load_mode=jited")
 #define __load_if_no_JITed()	__test_tag("load_mode=no_jited")
diff --git a/tools/testing/selftests/bpf/test_loader.c b/tools/testing/selftests/bpf/test_loader.c
index ee637809a1d4..90910fc44f6b 100644
--- a/tools/testing/selftests/bpf/test_loader.c
+++ b/tools/testing/selftests/bpf/test_loader.c
@@ -376,6 +376,7 @@ enum arch {
 	ARCH_ARM64	= 0x4,
 	ARCH_RISCV64	= 0x8,
 	ARCH_S390X	= 0x10,
+	ARCH_LOONGARCH	= 0x20,
 };
 
 static int get_current_arch(void)
@@ -388,6 +389,8 @@ static int get_current_arch(void)
 	return ARCH_RISCV64;
 #elif defined(__s390x__)
 	return ARCH_S390X;
+#elif defined(__loongarch__)
+	return ARCH_LOONGARCH;
 #endif
 	return ARCH_UNKNOWN;
 }
@@ -579,6 +582,8 @@ static int parse_test_spec(struct test_loader *tester,
 				arch = ARCH_RISCV64;
 			} else if (strcmp(val, "s390x") == 0) {
 				arch = ARCH_S390X;
+			} else if (strcmp(val, "LOONGARCH") == 0) {
+				arch = ARCH_LOONGARCH;
 			} else {
 				PRINT_FAIL("bad arch spec: '%s'\n", val);
 				err = -EINVAL;
-- 
2.42.0