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-rw-r--r--include/linux/btf.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/btf.h b/include/linux/btf.h
index cdb376d53238..f9aababc5d78 100644
--- a/include/linux/btf.h
+++ b/include/linux/btf.h
@@ -49,6 +49,17 @@
* for this case.
*/
#define KF_TRUSTED_ARGS (1 << 4) /* kfunc only takes trusted pointer arguments */
+#define KF_SLEEPABLE (1 << 5) /* kfunc may sleep */
+#define KF_DESTRUCTIVE (1 << 6) /* kfunc performs destructive actions */
+
+/*
+ * Return the name of the passed struct, if exists, or halt the build if for
+ * example the structure gets renamed. In this way, developers have to revisit
+ * the code using that structure name, and update it accordingly.
+ */
+#define stringify_struct(x) \
+ ({ BUILD_BUG_ON(sizeof(struct x) < 0); \
+ __stringify(x); })
struct btf;
struct btf_member;
@@ -439,4 +450,14 @@ static inline int register_btf_id_dtor_kfuncs(const struct btf_id_dtor_kfunc *dt
}
#endif
+static inline bool btf_type_is_struct_ptr(struct btf *btf, const struct btf_type *t)
+{
+ if (!btf_type_is_ptr(t))
+ return false;
+
+ t = btf_type_skip_modifiers(btf, t->type, NULL);
+
+ return btf_type_is_struct(t);
+}
+
#endif