[v1] perf intel-pt: cleanup unneeded return variable in intel_pt_text_poke()

[PATCH v1] perf intel-pt: cleanup unneeded return variable in intel_pt_text_poke()

Posted by guanjing 2 days, 16 hours ago

Removed Unneeded variable: "ret"

Fixes: 0dd5041c9a0e ("perf addr_location: Add init/exit/copy functions")
Signed-off-by: guanjing <guanjing@cmss.chinamobile.com>
---
 tools/perf/util/intel-pt.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c
index 30be6dfe09eb..6c0234acc669 100644
--- a/tools/perf/util/intel-pt.c
+++ b/tools/perf/util/intel-pt.c
@@ -3402,7 +3402,6 @@ static int intel_pt_text_poke(struct intel_pt *pt, union perf_event *event)
 	struct machine *machine = pt->machine;
 	struct intel_pt_cache_entry *e;
 	u64 offset;
-	int ret = 0;
 
 	addr_location__init(&al);
 	if (!event->text_poke.new_len)
@@ -3443,7 +3442,7 @@ static int intel_pt_text_poke(struct intel_pt *pt, union perf_event *event)
 	}
 out:
 	addr_location__exit(&al);
-	return ret;
+	return 0;
 }
 
 static int intel_pt_process_event(struct perf_session *session,
-- 
2.33.0

Re: [PATCH v1] perf intel-pt: cleanup unneeded return variable in intel_pt_text_poke()

Posted by Adrian Hunter 2 days, 16 hours ago

On 21/11/24 12:00, guanjing wrote:
> Removed Unneeded variable: "ret"
> 
> Fixes: 0dd5041c9a0e ("perf addr_location: Add init/exit/copy functions")

A Fixes tag is not for patches that don't fix some functionality.

> Signed-off-by: guanjing <guanjing@cmss.chinamobile.com>
> ---
>  tools/perf/util/intel-pt.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c
> index 30be6dfe09eb..6c0234acc669 100644
> --- a/tools/perf/util/intel-pt.c
> +++ b/tools/perf/util/intel-pt.c
> @@ -3402,7 +3402,6 @@ static int intel_pt_text_poke(struct intel_pt *pt, union perf_event *event)
>  	struct machine *machine = pt->machine;
>  	struct intel_pt_cache_entry *e;
>  	u64 offset;
> -	int ret = 0;
>  
>  	addr_location__init(&al);
>  	if (!event->text_poke.new_len)
> @@ -3443,7 +3442,7 @@ static int intel_pt_text_poke(struct intel_pt *pt, union perf_event *event)
>  	}
>  out:
>  	addr_location__exit(&al);
> -	return ret;
> +	return 0;

Should just drop the return value entirely, since it is
always zero.

>  }
>  
>  static int intel_pt_process_event(struct perf_session *session,

Re: [PATCH v1] perf intel-pt: cleanup unneeded return variable inintel_pt_text_poke()

Posted by guanjing 2 days, 15 hours ago

Thank you for clarifying the proper usage of the Fixes tag. I understand 
now that it should only be applied when there is an actual fix to 
functionality. I will ensure to use it correctly in future submissions.

Thanks a lot!

On 2024/11/21 18:18, Adrian Hunter wrote:
> On 21/11/24 12:00, guanjing wrote:
>> Removed Unneeded variable: "ret"
>>
>> Fixes: 0dd5041c9a0e ("perf addr_location: Add init/exit/copy functions")
> A Fixes tag is not for patches that don't fix some functionality.
>
>> Signed-off-by: guanjing <guanjing@cmss.chinamobile.com>
>> ---
>>   tools/perf/util/intel-pt.c | 3 +--
>>   1 file changed, 1 insertion(+), 2 deletions(-)
>>
>> diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c
>> index 30be6dfe09eb..6c0234acc669 100644
>> --- a/tools/perf/util/intel-pt.c
>> +++ b/tools/perf/util/intel-pt.c
>> @@ -3402,7 +3402,6 @@ static int intel_pt_text_poke(struct intel_pt *pt, union perf_event *event)
>>   	struct machine *machine = pt->machine;
>>   	struct intel_pt_cache_entry *e;
>>   	u64 offset;
>> -	int ret = 0;
>>   
>>   	addr_location__init(&al);
>>   	if (!event->text_poke.new_len)
>> @@ -3443,7 +3442,7 @@ static int intel_pt_text_poke(struct intel_pt *pt, union perf_event *event)
>>   	}
>>   out:
>>   	addr_location__exit(&al);
>> -	return ret;
>> +	return 0;
> Should just drop the return value entirely, since it is
> always zero.
>
>>   }
>>   
>>   static int intel_pt_process_event(struct perf_session *session,