If pahole is asked to encode BTF for a file with no DWARF info, don't
fail, just skip it.
This is the case, for instance, in this file in a kernel build with
DWARF info generation enabled:
$ pahole ../build/v6.15.0-rc4+/arch/x86/purgatory/purgatory.o
libbpf: failed to find '.BTF' ELF section in ../build/v6.15.0-rc4+/arch/x86/purgatory/purgatory.o
pahole: file '../build/v6.15.0-rc4+/arch/x86/purgatory/purgatory.o' has no supported type information.
$
Before it was failing when encoding BTF for it, now:
$ pahole --btf_encode ../build/v6.15.0-rc4+/arch/x86/purgatory/purgatory.o
$ echo $?
0
$
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
pahole.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/pahole.c b/pahole.c
index 333e71ab65924d2c..a001ec86ef1b0908 100644
--- a/pahole.c
+++ b/pahole.c
@@ -3659,6 +3659,13 @@ try_sole_arg_as_class_names:
remaining = argc;
goto try_sole_arg_as_class_names;
}
+
+ if (btf_encode || ctf_encode) {
+ // If encoding is asked for and there is no DEBUG info to encode from,
+ // there are no errors, continue...
+ goto out_ok;
+ }
+
if (argv[remaining] != NULL) {
cus__fprintf_load_files_err(cus, "pahole", argv + remaining, err, stderr);
} else {
--
2.49.0
