diff options
| author | Daniel Borkmann <dborkman@redhat.com> | 2013-03-21 22:22:03 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-03-21 17:25:56 -0400 |
| commit | 79617801ea0c0e6664cb497d4c1892c2ff407364 (patch) | |
| tree | 5c1f4af6a7c3a6e13a33f054d7c58dee146f15e3 /arch | |
| parent | d5e07e69218fd9aa21d6c8c5ccc629d92bdb9b0f (diff) | |
filter: bpf_jit_comp: refactor and unify BPF JIT image dump output
If bpf_jit_enable > 1, then we dump the emitted JIT compiled image
after creation. Currently, only SPARC and PowerPC has similar output
as in the reference implementation on x86_64. Make a small helper
function in order to reduce duplicated code and make the dump output
uniform across architectures x86_64, SPARC, PPC, ARM (e.g. on ARM
flen, pass and proglen are currently not shown, but would be
interesting to know as well), also for future BPF JIT implementations
on other archs.
Cc: Mircea Gherzan <mgherzan@gmail.com>
Cc: Matt Evans <matt@ozlabs.org>
Cc: Eric Dumazet <eric.dumazet@google.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/net/bpf_jit_32.c | 5 | ||||
| -rw-r--r-- | arch/powerpc/net/bpf_jit_comp.c | 12 | ||||
| -rw-r--r-- | arch/sparc/net/bpf_jit_comp.c | 6 | ||||
| -rw-r--r-- | arch/x86/net/bpf_jit_comp.c | 9 |
4 files changed, 9 insertions, 23 deletions
diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c index a0bd8a755bdf..1a643ee8e082 100644 --- a/arch/arm/net/bpf_jit_32.c +++ b/arch/arm/net/bpf_jit_32.c @@ -918,9 +918,8 @@ void bpf_jit_compile(struct sk_filter *fp) #endif if (bpf_jit_enable > 1) - print_hex_dump(KERN_INFO, "BPF JIT code: ", - DUMP_PREFIX_ADDRESS, 16, 4, ctx.target, - alloc_size, false); + /* there are 2 passes here */ + bpf_jit_dump(fp->len, alloc_size, 2, ctx.target); fp->bpf_func = (void *)ctx.target; out: diff --git a/arch/powerpc/net/bpf_jit_comp.c b/arch/powerpc/net/bpf_jit_comp.c index e834f1ec23c8..c427ae36374a 100644 --- a/arch/powerpc/net/bpf_jit_comp.c +++ b/arch/powerpc/net/bpf_jit_comp.c @@ -671,16 +671,12 @@ void bpf_jit_compile(struct sk_filter *fp) } if (bpf_jit_enable > 1) - pr_info("flen=%d proglen=%u pass=%d image=%p\n", - flen, proglen, pass, image); + /* Note that we output the base address of the code_base + * rather than image, since opcodes are in code_base. + */ + bpf_jit_dump(flen, proglen, pass, code_base); if (image) { - if (bpf_jit_enable > 1) - print_hex_dump(KERN_ERR, "JIT code: ", - DUMP_PREFIX_ADDRESS, - 16, 1, code_base, - proglen, false); - bpf_flush_icache(code_base, code_base + (proglen/4)); /* Function descriptor nastiness: Address + TOC */ ((u64 *)image)[0] = (u64)code_base; diff --git a/arch/sparc/net/bpf_jit_comp.c b/arch/sparc/net/bpf_jit_comp.c index 3109ca684a99..d36a85ebb5e0 100644 --- a/arch/sparc/net/bpf_jit_comp.c +++ b/arch/sparc/net/bpf_jit_comp.c @@ -795,13 +795,9 @@ cond_branch: f_offset = addrs[i + filter[i].jf]; } if (bpf_jit_enable > 1) - pr_err("flen=%d proglen=%u pass=%d image=%p\n", - flen, proglen, pass, image); + bpf_jit_dump(flen, proglen, pass, image); if (image) { - if (bpf_jit_enable > 1) - print_hex_dump(KERN_ERR, "JIT code: ", DUMP_PREFIX_ADDRESS, - 16, 1, image, proglen, false); bpf_flush_icache(image, image + proglen); fp->bpf_func = (void *)image; } diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c index 3cbe45381bbb..f66b54086ce5 100644 --- a/arch/x86/net/bpf_jit_comp.c +++ b/arch/x86/net/bpf_jit_comp.c @@ -725,17 +725,12 @@ cond_branch: f_offset = addrs[i + filter[i].jf] - addrs[i]; } oldproglen = proglen; } + if (bpf_jit_enable > 1) - pr_err("flen=%d proglen=%u pass=%d image=%p\n", - flen, proglen, pass, image); + bpf_jit_dump(flen, proglen, pass, image); if (image) { - if (bpf_jit_enable > 1) - print_hex_dump(KERN_ERR, "JIT code: ", DUMP_PREFIX_ADDRESS, - 16, 1, image, proglen, false); - bpf_flush_icache(image, image + proglen); - fp->bpf_func = (void *)image; } out: |