bpf: Move ksym_tnode to bpf_ksym

Moving ksym_tnode list node to 'struct bpf_ksym' object, so the symbol itself can be chained and used in other objects like bpf_trampoline and bpf_dispatcher. We need bpf_ksym object to be linked both in bpf_kallsyms via lnode for /proc/kallsyms and in bpf_tree via tnode for bpf address lookup functions like __bpf_address_lookup or bpf_prog_kallsyms_find.

Jiri Olsa committed 6 years ago

Commit ca4424c1 parent ecb60d12 files · +11 −15Browse files

Showing the changes to include/linux (1 of 2 files). Show all

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include/linux/bpf.h+1−1

@@ -477,6 +477,7 @@ struct bpf_ksym { · 476 unmodified lines
477	477	unsigned long end;
478	478	char name[KSYM_NAME_LEN];
479	479	struct list_head lnode;
	480	+ struct latch_tree_node tnode;
480	481	};
481	482
482	483	enum bpf_tramp_prog_type {
@@ -659,7 +660,6 @@ struct bpf_prog_aux { · 176 unmodified lines
659	660	void jit_data; / JIT specific data. arch dependent */
660	661	struct bpf_jit_poke_descriptor *poke_tab;
661	662	u32 size_poke_tab;
662		− struct latch_tree_node ksym_tnode;
663	663	struct bpf_ksym ksym;
664	664	const struct bpf_prog_ops *ops;
665	665	struct bpf_map **used_maps;