diff options
| author | Wang Nan <wangnan0@huawei.com> | 2015-08-06 07:02:33 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-08-09 22:50:05 -0700 |
| commit | 2a36f0b92eb638dd023870574eb471b1c56be9ad (patch) | |
| tree | 74d714e1fc1e2daa98d61fdf948d9b7fae0e4378 /arch/x86/net/bpf_jit_comp.c | |
| parent | ffe8690c85b8426db7783064724d106702f1b1e8 (diff) | |
| download | linux-2a36f0b92eb638dd023870574eb471b1c56be9ad.tar.gz linux-2a36f0b92eb638dd023870574eb471b1c56be9ad.tar.bz2 linux-2a36f0b92eb638dd023870574eb471b1c56be9ad.zip | |
bpf: Make the bpf_prog_array_map more generic
All the map backends are of generic nature. In order to avoid
adding much special code into the eBPF core, rewrite part of
the bpf_prog_array map code and make it more generic. So the
new perf_event_array map type can reuse most of code with
bpf_prog_array map and add fewer lines of special code.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Kaixu Xia <xiakaixu@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/x86/net/bpf_jit_comp.c')
| -rw-r--r-- | arch/x86/net/bpf_jit_comp.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c index ec5214f39aa8..70efcd0940f9 100644 --- a/arch/x86/net/bpf_jit_comp.c +++ b/arch/x86/net/bpf_jit_comp.c @@ -246,7 +246,7 @@ static void emit_prologue(u8 **pprog) * goto out; * if (++tail_call_cnt > MAX_TAIL_CALL_CNT) * goto out; - * prog = array->prog[index]; + * prog = array->ptrs[index]; * if (prog == NULL) * goto out; * goto *(prog->bpf_func + prologue_size); @@ -284,9 +284,9 @@ static void emit_bpf_tail_call(u8 **pprog) EMIT3(0x83, 0xC0, 0x01); /* add eax, 1 */ EMIT2_off32(0x89, 0x85, -STACKSIZE + 36); /* mov dword ptr [rbp - 516], eax */ - /* prog = array->prog[index]; */ + /* prog = array->ptrs[index]; */ EMIT4_off32(0x48, 0x8D, 0x84, 0xD6, /* lea rax, [rsi + rdx * 8 + offsetof(...)] */ - offsetof(struct bpf_array, prog)); + offsetof(struct bpf_array, ptrs)); EMIT3(0x48, 0x8B, 0x00); /* mov rax, qword ptr [rax] */ /* if (prog == NULL) |