[PATCH dwarves v4 1/2] pahole: Add --btf_feature=decl_tag_kfuncs feature

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Add a feature flag to guard tagging of kfuncs. The next commit will
implement the actual tagging.

Signed-off-by: Daniel Xu <dxu@xxxxxxxxx>
---
 btf_encoder.c | 2 ++
 dwarves.h     | 1 +
 pahole.c      | 1 +
 3 files changed, 4 insertions(+)

diff --git a/btf_encoder.c b/btf_encoder.c
index fd04008..e325f66 100644
--- a/btf_encoder.c
+++ b/btf_encoder.c
@@ -77,6 +77,7 @@ struct btf_encoder {
 			  verbose,
 			  force,
 			  gen_floats,
+			  tag_kfuncs,
 			  is_rel;
 	uint32_t	  array_index_id;
 	struct {
@@ -1642,6 +1643,7 @@ struct btf_encoder *btf_encoder__new(struct cu *cu, const char *detached_filenam
 		encoder->force		 = conf_load->btf_encode_force;
 		encoder->gen_floats	 = conf_load->btf_gen_floats;
 		encoder->skip_encoding_vars = conf_load->skip_encoding_btf_vars;
+		encoder->tag_kfuncs	 = conf_load->btf_decl_tag_kfuncs;
 		encoder->verbose	 = verbose;
 		encoder->has_index_type  = false;
 		encoder->need_index_type = false;
diff --git a/dwarves.h b/dwarves.h
index 857b37c..996eb70 100644
--- a/dwarves.h
+++ b/dwarves.h
@@ -87,6 +87,7 @@ struct conf_load {
 	bool			skip_encoding_btf_vars;
 	bool			btf_gen_floats;
 	bool			btf_encode_force;
+	bool			btf_decl_tag_kfuncs;
 	uint8_t			hashtable_bits;
 	uint8_t			max_hashtable_bits;
 	uint16_t		kabi_prefix_len;
diff --git a/pahole.c b/pahole.c
index 768a2fe..48c19b7 100644
--- a/pahole.c
+++ b/pahole.c
@@ -1278,6 +1278,7 @@ struct btf_feature {
 	BTF_FEATURE(enum64, skip_encoding_btf_enum64, true),
 	BTF_FEATURE(optimized_func, btf_gen_optimized, false),
 	BTF_FEATURE(consistent_func, skip_encoding_btf_inconsistent_proto, false),
+	BTF_FEATURE(decl_tag_kfuncs, btf_decl_tag_kfuncs, false),
 };
 
 #define BTF_MAX_FEATURE_STR	1024
-- 
2.42.1





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