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* [PATCH -next] bpf: make btf_check_func_type_match() static
@ 2020-02-03  2:02 Hongbo Yao
  2020-02-03  6:20 ` Yonghong Song
  0 siblings, 1 reply; 3+ messages in thread
From: Hongbo Yao @ 2020-02-03  2:02 UTC (permalink / raw)
  To: ast, daniel
  Cc: yaohongbo, chenzhou10, kafai, songliubraving, yhs, andriin,
	netdev, bpf, linux-kernel, clang-built-linux

Fix sparse warning:
kernel/bpf/btf.c:4131:5: warning: symbol 'btf_check_func_type_match' was
not declared. Should it be static?

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Hongbo Yao <yaohongbo@huawei.com>
---
 kernel/bpf/btf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 8c9d8f266bef..83d3d92023af 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -4144,7 +4144,7 @@ int btf_distill_func_proto(struct bpf_verifier_log *log,
  * EFAULT - verifier bug
  * 0 - 99% match. The last 1% is validated by the verifier.
  */
-int btf_check_func_type_match(struct bpf_verifier_log *log,
+static int btf_check_func_type_match(struct bpf_verifier_log *log,
 			      struct btf *btf1, const struct btf_type *t1,
 			      struct btf *btf2, const struct btf_type *t2)
 {
-- 
2.20.1


^ permalink raw reply related	[flat|nested] 3+ messages in thread

* Re: [PATCH -next] bpf: make btf_check_func_type_match() static
  2020-02-03  2:02 [PATCH -next] bpf: make btf_check_func_type_match() static Hongbo Yao
@ 2020-02-03  6:20 ` Yonghong Song
  2020-02-03  8:16   ` Yao HongBo
  0 siblings, 1 reply; 3+ messages in thread
From: Yonghong Song @ 2020-02-03  6:20 UTC (permalink / raw)
  To: Hongbo Yao, ast, daniel
  Cc: chenzhou10, kafai, songliubraving, andriin, netdev, bpf,
	linux-kernel, clang-built-linux



On 2/2/20 6:02 PM, Hongbo Yao wrote:
> Fix sparse warning:
> kernel/bpf/btf.c:4131:5: warning: symbol 'btf_check_func_type_match' was
> not declared. Should it be static?

Yes, static is better since the function is only used in one file.

Please use the tag "[PATCH bpf-next]" instead of "[PATCH -next]".
Since this is to fix a sparse warning, I think it should be okay
to target bpf-next. Please resubmit after bpf-next reopens in
about a week.

> 
> Reported-by: Hulk Robot <hulkci@huawei.com>
> Signed-off-by: Hongbo Yao <yaohongbo@huawei.com>
> ---
>   kernel/bpf/btf.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
> index 8c9d8f266bef..83d3d92023af 100644
> --- a/kernel/bpf/btf.c
> +++ b/kernel/bpf/btf.c
> @@ -4144,7 +4144,7 @@ int btf_distill_func_proto(struct bpf_verifier_log *log,
>    * EFAULT - verifier bug
>    * 0 - 99% match. The last 1% is validated by the verifier.
>    */
> -int btf_check_func_type_match(struct bpf_verifier_log *log,
> +static int btf_check_func_type_match(struct bpf_verifier_log *log,
>   			      struct btf *btf1, const struct btf_type *t1,
>   			      struct btf *btf2, const struct btf_type *t2)

Please also align
   struct btf *btf1, const struct btf_type *t1,
   struct btf *btf2, const struct btf_type *t2)
properly after you added 'static' before the function declaration.

>   {
> 

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [PATCH -next] bpf: make btf_check_func_type_match() static
  2020-02-03  6:20 ` Yonghong Song
@ 2020-02-03  8:16   ` Yao HongBo
  0 siblings, 0 replies; 3+ messages in thread
From: Yao HongBo @ 2020-02-03  8:16 UTC (permalink / raw)
  To: Yonghong Song, ast, daniel
  Cc: chenzhou10, kafai, songliubraving, andriin, netdev, bpf,
	linux-kernel, clang-built-linux



On 2/3/2020 2:20 PM, Yonghong Song wrote:
> 
> 
> On 2/2/20 6:02 PM, Hongbo Yao wrote:
>> Fix sparse warning:
>> kernel/bpf/btf.c:4131:5: warning: symbol 'btf_check_func_type_match' was
>> not declared. Should it be static?
> 
> Yes, static is better since the function is only used in one file.
> 
> Please use the tag "[PATCH bpf-next]" instead of "[PATCH -next]".
> Since this is to fix a sparse warning, I think it should be okay
> to target bpf-next. Please resubmit after bpf-next reopens in
> about a week.

OK.

>>
>> Reported-by: Hulk Robot <hulkci@huawei.com>
>> Signed-off-by: Hongbo Yao <yaohongbo@huawei.com>
>> ---
>>   kernel/bpf/btf.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
>> index 8c9d8f266bef..83d3d92023af 100644
>> --- a/kernel/bpf/btf.c
>> +++ b/kernel/bpf/btf.c
>> @@ -4144,7 +4144,7 @@ int btf_distill_func_proto(struct bpf_verifier_log *log,
>>    * EFAULT - verifier bug
>>    * 0 - 99% match. The last 1% is validated by the verifier.
>>    */
>> -int btf_check_func_type_match(struct bpf_verifier_log *log,
>> +static int btf_check_func_type_match(struct bpf_verifier_log *log,
>>                     struct btf *btf1, const struct btf_type *t1,
>>                     struct btf *btf2, const struct btf_type *t2)
> 
> Please also align
>   struct btf *btf1, const struct btf_type *t1,
>   struct btf *btf2, const struct btf_type *t2)
> properly after you added 'static' before the function declaration.

I'll fix it, thanks.

>>   {
>>
> 
> .
> 


^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2020-02-03  8:16 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2020-02-03  2:02 [PATCH -next] bpf: make btf_check_func_type_match() static Hongbo Yao
2020-02-03  6:20 ` Yonghong Song
2020-02-03  8:16   ` Yao HongBo

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