[PATCH] bpf: constify bpf_verifier_ops structure

[PATCH] bpf: constify bpf_verifier_ops structure

[Julia Lawall]

This bpf_verifier_ops structure is never modified, like the other
bpf_verifier_ops structures, so declare it as const.

Done with the help of Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

---
 kernel/trace/bpf_trace.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c
index 4228fd3..45dd798 100644
--- a/kernel/trace/bpf_trace.c
+++ b/kernel/trace/bpf_trace.c
@@ -316,7 +316,7 @@ static bool kprobe_prog_is_valid_access(int off, int size, enum bpf_access_type
 	return true;
 }
 
-static struct bpf_verifier_ops kprobe_prog_ops = {
+static const struct bpf_verifier_ops kprobe_prog_ops = {
 	.get_func_proto  = kprobe_prog_func_proto,
 	.is_valid_access = kprobe_prog_is_valid_access,
 };

Re: [PATCH] bpf: constify bpf_verifier_ops structure

[Steven Rostedt]

On Fri, 11 Dec 2015 18:35:59 +0100
Julia Lawall <Julia.Lawall@lip6.fr> wrote:

> This bpf_verifier_ops structure is never modified, like the other
> bpf_verifier_ops structures, so declare it as const.
> 
> Done with the help of Coccinelle.

Thanks, I'll add this to my 4.5 queue.

-- Steve

> 
> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
> 
> ---
>  kernel/trace/bpf_trace.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c
> index 4228fd3..45dd798 100644
> --- a/kernel/trace/bpf_trace.c
> +++ b/kernel/trace/bpf_trace.c
> @@ -316,7 +316,7 @@ static bool kprobe_prog_is_valid_access(int off, int size, enum bpf_access_type
>  	return true;
>  }
>  
> -static struct bpf_verifier_ops kprobe_prog_ops = {
> +static const struct bpf_verifier_ops kprobe_prog_ops = {
>  	.get_func_proto  = kprobe_prog_func_proto,
>  	.is_valid_access = kprobe_prog_is_valid_access,
>  };

Re: [PATCH] bpf: constify bpf_verifier_ops structure

[Alexei Starovoitov]

On Fri, Dec 11, 2015 at 01:12:56PM -0500, Steven Rostedt wrote:
> On Fri, 11 Dec 2015 18:35:59 +0100
> Julia Lawall <Julia.Lawall@lip6.fr> wrote:
> 
> > This bpf_verifier_ops structure is never modified, like the other
> > bpf_verifier_ops structures, so declare it as const.
> > 
> > Done with the help of Coccinelle.
> 
> Thanks, I'll add this to my 4.5 queue.

emails crossed. this is also fine with me.

Re: [PATCH] bpf: constify bpf_verifier_ops structure

[Daniel Borkmann]

On 12/11/2015 06:35 PM, Julia Lawall wrote:
> This bpf_verifier_ops structure is never modified, like the other
> bpf_verifier_ops structures, so declare it as const.
>
> Done with the help of Coccinelle.
>
> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

Thanks Julia!

Acked-by: Daniel Borkmann <daniel@iogearbox.net>

Re: [PATCH] bpf: constify bpf_verifier_ops structure

[Alexei Starovoitov]

On Fri, Dec 11, 2015 at 06:35:59PM +0100, Julia Lawall wrote:
> This bpf_verifier_ops structure is never modified, like the other
> bpf_verifier_ops structures, so declare it as const.
> 
> Done with the help of Coccinelle.
> 
> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

Acked-by: Alexei Starovoitov <ast@kernel.org>

Ingo, can you take it into tip ? Thanks!