diff mbox series

[dwarves,v6,2/3] pahole: Add --btf_feature=decl_tag_kfuncs feature

Message ID 8a10fa4a067a382cecba722c91e6a8780ff4159c.1711389163.git.dxu@dxuuu.xyz (mailing list archive)
State Not Applicable
Headers show
Series pahole: Inject kfunc decl tags into BTF | expand

Checks

Context Check Description
netdev/tree_selection success Not a local patch

Commit Message

Daniel Xu March 25, 2024, 5:53 p.m. UTC 
Add a feature flag to guard tagging of kfuncs. The next commit will
implement the actual tagging.

Reviewed-by: Alan Maguire <alan.maguire@oracle.com>
Signed-off-by: Daniel Xu <dxu@dxuuu.xyz>
---
 btf_encoder.c      | 2 ++
 dwarves.h          | 1 +
 man-pages/pahole.1 | 1 +
 pahole.c           | 1 +
 4 files changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/btf_encoder.c b/btf_encoder.c
index e1e3529..850e36f 100644
--- a/btf_encoder.c
+++ b/btf_encoder.c
@@ -75,6 +75,7 @@  struct btf_encoder {
 			  verbose,
 			  force,
 			  gen_floats,
+			  tag_kfuncs,
 			  is_rel;
 	uint32_t	  array_index_id;
 	struct {
@@ -1659,6 +1660,7 @@  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 2393a6c..2a679bb 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/man-pages/pahole.1 b/man-pages/pahole.1
index 2be165d..5ea41ff 100644
--- a/man-pages/pahole.1
+++ b/man-pages/pahole.1
@@ -308,6 +308,7 @@  Encode BTF using the specified feature list, or specify 'all' for all features s
 	                   in some CUs and not others, or when the same
 	                   function name has inconsistent BTF descriptions
 	                   in different CUs.
+	decl_tag_kfuncs    Inject a BTF_KIND_DECL_TAG for each discovered kfunc.
 .fi
 
 So for example, specifying \-\-btf_encode=var,enum64 will result in a BTF encoding that (as well as encoding basic BTF information) will contain variables and enum64 values.
diff --git a/pahole.c b/pahole.c
index 0b9c2de..353a080 100644
--- a/pahole.c
+++ b/pahole.c
@@ -1281,6 +1281,7 @@  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