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[bpf-next,v1] bpf: move warning in btf_load_into_kernel

Message ID 20250219201318.3160015-1-linux@jordanrome.com (mailing list archive)
State New
Delegated to: BPF
Headers show
Series [bpf-next,v1] bpf: move warning in btf_load_into_kernel | expand

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Commit Message

Jordan Rome Feb. 19, 2025, 8:13 p.m. UTC 
When BTF fails to load, only show the warning
for callers that didn't supply a log_buf.
This will remove an unneeded warning for
users loading BPF programs (via
`bpf_object__sanitize_and_load_btf`) on kernels
that don't require BTF.

This also assumes that callers providing
a log_buf know what they're doing.

Signed-off-by: Jordan Rome <linux@jordanrome.com>
---
 tools/lib/bpf/btf.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--
2.43.5
diff mbox series

Patch

diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c
index eea99c766a20..e4a463bda0b8 100644
--- a/tools/lib/bpf/btf.c
+++ b/tools/lib/bpf/btf.c
@@ -1447,10 +1447,11 @@  int btf_load_into_kernel(struct btf *btf,
 			goto retry_load;

 		err = -errno;
-		pr_warn("BTF loading error: %s\n", errstr(err));
 		/* don't print out contents of custom log_buf */
-		if (!log_buf && buf[0])
+		if (!log_buf && buf[0]) {
+			pr_warn("BTF loading error: %s\n", errstr(err));
 			pr_warn("-- BEGIN BTF LOAD LOG ---\n%s\n-- END BTF LOAD LOG --\n", buf);
+		}
 	}

 done: