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[RFC,bpf-next,09/14] selftests/bpf: add guard macros around likely/unlikely

Message ID 20250318143318.656785-10-aspsk@isovalent.com (mailing list archive)
State RFC
Delegated to: BPF
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netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for bpf-next, async
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/build_tools success Errors and warnings before: 26 (+0) this patch: 26 (+0)
netdev/cc_maintainers warning 11 maintainers not CCed: sdf@fomichev.me linux-kselftest@vger.kernel.org jolsa@kernel.org song@kernel.org martin.lau@linux.dev haoluo@google.com dxu@dxuuu.xyz mykolal@fb.com john.fastabend@gmail.com shuah@kernel.org kpsingh@kernel.org
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
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Commit Message

Anton Protopopov March 18, 2025, 2:33 p.m. UTC 
Add guard macros around likely/unlikely definitions such that, if defined
previously, the compilation doesn't break. (Those macros, actually,
will be defined in libbpf in a consequent commit.)

Signed-off-by: Anton Protopopov <aspsk@isovalent.com>
---
 tools/testing/selftests/bpf/bpf_arena_spin_lock.h | 5 +++++
 tools/testing/selftests/bpf/progs/iters.c         | 2 ++
 2 files changed, 7 insertions(+)
diff mbox series

Patch

diff --git a/tools/testing/selftests/bpf/bpf_arena_spin_lock.h b/tools/testing/selftests/bpf/bpf_arena_spin_lock.h
index fb8dc0768999..d60d899dd9da 100644
--- a/tools/testing/selftests/bpf/bpf_arena_spin_lock.h
+++ b/tools/testing/selftests/bpf/bpf_arena_spin_lock.h
@@ -95,8 +95,13 @@  struct arena_qnode {
 #define _Q_LOCKED_VAL		(1U << _Q_LOCKED_OFFSET)
 #define _Q_PENDING_VAL		(1U << _Q_PENDING_OFFSET)
 
+#ifndef likely
 #define likely(x) __builtin_expect(!!(x), 1)
+#endif
+
+#ifndef unlikely
 #define unlikely(x) __builtin_expect(!!(x), 0)
+#endif
 
 struct arena_qnode __arena qnodes[_Q_MAX_CPUS][_Q_MAX_NODES];
 
diff --git a/tools/testing/selftests/bpf/progs/iters.c b/tools/testing/selftests/bpf/progs/iters.c
index 427b72954b87..1b9a908f2607 100644
--- a/tools/testing/selftests/bpf/progs/iters.c
+++ b/tools/testing/selftests/bpf/progs/iters.c
@@ -7,7 +7,9 @@ 
 #include "bpf_misc.h"
 #include "bpf_compiler.h"
 
+#ifndef unlikely
 #define unlikely(x)	__builtin_expect(!!(x), 0)
+#endif
 
 static volatile int zero = 0;