diff mbox series

[v6,bpf-next,4/5] selftests/bpf: Mark cpumask kfunc declarations as __weak

Message ID 20240206081416.26242-5-laoar.shao@gmail.com (mailing list archive)
State Accepted
Delegated to: BPF
Headers show
Series bpf: Add bpf_iter_cpumask | expand

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bpf/vmtest-bpf-next-PR success PR summary
netdev/series_format success Posting correctly formatted
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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
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Commit Message

Yafang Shao Feb. 6, 2024, 8:14 a.m. UTC 
After the series "Annotate kfuncs in .BTF_ids section"[0], kfuncs can be
generated from bpftool. Let's mark the existing cpumask kfunc declarations
__weak so they don't conflict with definitions that will eventually come
from vmlinux.h.

[0]. https://lore.kernel.org/all/cover.1706491398.git.dxu@dxuuu.xyz

Suggested-by: Andrii Nakryiko <andrii.nakryiko@gmail.com>
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Cc: Daniel Xu <dxu@dxuuu.xyz>
---
 .../selftests/bpf/progs/cpumask_common.h      | 57 ++++++++++---------
 1 file changed, 29 insertions(+), 28 deletions(-)

Comments

Daniel Xu Feb. 6, 2024, 3:48 p.m. UTC | #1 
On Tue, Feb 06, 2024 at 04:14:15PM +0800, Yafang Shao wrote:
> After the series "Annotate kfuncs in .BTF_ids section"[0], kfuncs can be
> generated from bpftool. Let's mark the existing cpumask kfunc declarations
> __weak so they don't conflict with definitions that will eventually come
> from vmlinux.h.
> 
> [0]. https://lore.kernel.org/all/cover.1706491398.git.dxu@dxuuu.xyz
> 
> Suggested-by: Andrii Nakryiko <andrii.nakryiko@gmail.com>
> Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
> Cc: Daniel Xu <dxu@dxuuu.xyz>
> ---
>  .../selftests/bpf/progs/cpumask_common.h      | 57 ++++++++++---------
>  1 file changed, 29 insertions(+), 28 deletions(-)

Thanks!

Acked-by: Daniel Xu <dxu@dxuuu.xyz>

[..]
diff mbox series

Patch

diff --git a/tools/testing/selftests/bpf/progs/cpumask_common.h b/tools/testing/selftests/bpf/progs/cpumask_common.h
index 0cd4aebb97cf..c705d8112a35 100644
--- a/tools/testing/selftests/bpf/progs/cpumask_common.h
+++ b/tools/testing/selftests/bpf/progs/cpumask_common.h
@@ -23,41 +23,42 @@  struct array_map {
 	__uint(max_entries, 1);
 } __cpumask_map SEC(".maps");
 
-struct bpf_cpumask *bpf_cpumask_create(void) __ksym;
-void bpf_cpumask_release(struct bpf_cpumask *cpumask) __ksym;
-struct bpf_cpumask *bpf_cpumask_acquire(struct bpf_cpumask *cpumask) __ksym;
-u32 bpf_cpumask_first(const struct cpumask *cpumask) __ksym;
-u32 bpf_cpumask_first_zero(const struct cpumask *cpumask) __ksym;
+struct bpf_cpumask *bpf_cpumask_create(void) __ksym __weak;
+void bpf_cpumask_release(struct bpf_cpumask *cpumask) __ksym __weak;
+struct bpf_cpumask *bpf_cpumask_acquire(struct bpf_cpumask *cpumask) __ksym __weak;
+u32 bpf_cpumask_first(const struct cpumask *cpumask) __ksym __weak;
+u32 bpf_cpumask_first_zero(const struct cpumask *cpumask) __ksym __weak;
 u32 bpf_cpumask_first_and(const struct cpumask *src1,
-			  const struct cpumask *src2) __ksym;
-void bpf_cpumask_set_cpu(u32 cpu, struct bpf_cpumask *cpumask) __ksym;
-void bpf_cpumask_clear_cpu(u32 cpu, struct bpf_cpumask *cpumask) __ksym;
-bool bpf_cpumask_test_cpu(u32 cpu, const struct cpumask *cpumask) __ksym;
-bool bpf_cpumask_test_and_set_cpu(u32 cpu, struct bpf_cpumask *cpumask) __ksym;
-bool bpf_cpumask_test_and_clear_cpu(u32 cpu, struct bpf_cpumask *cpumask) __ksym;
-void bpf_cpumask_setall(struct bpf_cpumask *cpumask) __ksym;
-void bpf_cpumask_clear(struct bpf_cpumask *cpumask) __ksym;
+			  const struct cpumask *src2) __ksym __weak;
+void bpf_cpumask_set_cpu(u32 cpu, struct bpf_cpumask *cpumask) __ksym __weak;
+void bpf_cpumask_clear_cpu(u32 cpu, struct bpf_cpumask *cpumask) __ksym __weak;
+bool bpf_cpumask_test_cpu(u32 cpu, const struct cpumask *cpumask) __ksym __weak;
+bool bpf_cpumask_test_and_set_cpu(u32 cpu, struct bpf_cpumask *cpumask) __ksym __weak;
+bool bpf_cpumask_test_and_clear_cpu(u32 cpu, struct bpf_cpumask *cpumask) __ksym __weak;
+void bpf_cpumask_setall(struct bpf_cpumask *cpumask) __ksym __weak;
+void bpf_cpumask_clear(struct bpf_cpumask *cpumask) __ksym __weak;
 bool bpf_cpumask_and(struct bpf_cpumask *cpumask,
 		     const struct cpumask *src1,
-		     const struct cpumask *src2) __ksym;
+		     const struct cpumask *src2) __ksym __weak;
 void bpf_cpumask_or(struct bpf_cpumask *cpumask,
 		    const struct cpumask *src1,
-		    const struct cpumask *src2) __ksym;
+		    const struct cpumask *src2) __ksym __weak;
 void bpf_cpumask_xor(struct bpf_cpumask *cpumask,
 		     const struct cpumask *src1,
-		     const struct cpumask *src2) __ksym;
-bool bpf_cpumask_equal(const struct cpumask *src1, const struct cpumask *src2) __ksym;
-bool bpf_cpumask_intersects(const struct cpumask *src1, const struct cpumask *src2) __ksym;
-bool bpf_cpumask_subset(const struct cpumask *src1, const struct cpumask *src2) __ksym;
-bool bpf_cpumask_empty(const struct cpumask *cpumask) __ksym;
-bool bpf_cpumask_full(const struct cpumask *cpumask) __ksym;
-void bpf_cpumask_copy(struct bpf_cpumask *dst, const struct cpumask *src) __ksym;
-u32 bpf_cpumask_any_distribute(const struct cpumask *src) __ksym;
-u32 bpf_cpumask_any_and_distribute(const struct cpumask *src1, const struct cpumask *src2) __ksym;
-u32 bpf_cpumask_weight(const struct cpumask *cpumask) __ksym;
-
-void bpf_rcu_read_lock(void) __ksym;
-void bpf_rcu_read_unlock(void) __ksym;
+		     const struct cpumask *src2) __ksym __weak;
+bool bpf_cpumask_equal(const struct cpumask *src1, const struct cpumask *src2) __ksym __weak;
+bool bpf_cpumask_intersects(const struct cpumask *src1, const struct cpumask *src2) __ksym __weak;
+bool bpf_cpumask_subset(const struct cpumask *src1, const struct cpumask *src2) __ksym __weak;
+bool bpf_cpumask_empty(const struct cpumask *cpumask) __ksym __weak;
+bool bpf_cpumask_full(const struct cpumask *cpumask) __ksym __weak;
+void bpf_cpumask_copy(struct bpf_cpumask *dst, const struct cpumask *src) __ksym __weak;
+u32 bpf_cpumask_any_distribute(const struct cpumask *src) __ksym __weak;
+u32 bpf_cpumask_any_and_distribute(const struct cpumask *src1,
+				   const struct cpumask *src2) __ksym __weak;
+u32 bpf_cpumask_weight(const struct cpumask *cpumask) __ksym __weak;
+
+void bpf_rcu_read_lock(void) __ksym __weak;
+void bpf_rcu_read_unlock(void) __ksym __weak;
 
 static inline const struct cpumask *cast(struct bpf_cpumask *cpumask)
 {