bpf: Remove bpf_image tree

Now that we have all the objects (bpf_prog, bpf_trampoline,
bpf_dispatcher) linked in bpf_tree, there's no need to have
separate bpf_image tree for images.

Reverting the bpf_image tree together with struct bpf_image,
because it's no longer needed.

Also removing bpf_image_alloc function and adding the original
bpf_jit_alloc_exec_page interface instead.

The kernel_text_address function can now rely only on is_bpf_text_address,
because it checks the bpf_tree that contains all the objects.

Keeping bpf_image_ksym_add and bpf_image_ksym_del because they are
useful wrappers with perf's ksymbol interface calls.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200312195610.346362-13-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

This commit is contained in:

Jiri Olsa

2020-03-12 20:56:07 +01:00

committed by

Alexei Starovoitov

parent 517b75e44c

commit 7ac88eba18

4 changed files with 13 additions and 84 deletions

									
										kernel/extable.c
									
		-2
	
												View File
												
				@@ -149,8 +149,6 @@ int kernel_text_address(unsigned long addr)

						goto out;

					if (is_bpf_text_address(addr))

						goto out;

					if (is_bpf_image_address(addr))

						goto out;

					ret = 0;

				out:

					if (no_rcu)