[PATCH bpf-next] bpf: add --skip_encoding_btf_inconsistent_proto, --btf_gen_optimized to pahole flags for v1.25

[Alan Maguire <alan.maguire@oracle.com>]

v1.25 of pahole supports filtering out functions with multiple
inconsistent function prototypes or optimized-out parameters
from the BTF representation.  These present problems because
there is no additional info in BTF saying which inconsistent
prototype matches which function instance to help guide
attachment, and functions with optimized-out parameters can
lead to incorrect assumptions about register contents.

So for now, filter out such functions while adding BTF
representations for functions that have "."-suffixes
(foo.isra.0) but not optimized-out parameters.

This patch assumes changes in [1] land and pahole is bumped
to v1.25.

[1] https://lore.kernel.org/bpf/1675790102-23037-1-git-send-email-alan.maguire@oracle.com/

Signed-off-by: Alan Maguire <alan.maguire@oracle.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>

---
 scripts/pahole-flags.sh | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/scripts/pahole-flags.sh b/scripts/pahole-flags.sh
index 1f1f1d3..728d551 100755
--- a/scripts/pahole-flags.sh
+++ b/scripts/pahole-flags.sh
@@ -23,5 +23,8 @@ if [ "${pahole_ver}" -ge "124" ]; then
 	# see PAHOLE_HAS_LANG_EXCLUDE
 	extra_paholeopt="${extra_paholeopt} --lang_exclude=rust"
 fi
+if [ "${pahole_ver}" -ge "125" ]; then
+	extra_paholeopt="${extra_paholeopt} --skip_encoding_btf_inconsistent_proto --btf_gen_optimized"
+fi
 
 echo ${extra_paholeopt}
-- 
1.8.3.1