linux-kernel - Re: [PATCH V2]Perf:Return error code for perf_session_

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Date:   Thu, 22 Aug 2019 15:50:12 +0530
From:   Mamatha Inamdar <mamatha4@...ux.vnet.ibm.com>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     linux-kernel@...r.kernel.org, peterz@...radead.org,
        mingo@...hat.com, alexander.shishkin@...ux.intel.com,
        namhyung@...nel.org, kstewart@...uxfoundation.org,
        gregkh@...uxfoundation.org, jeremie.galarneau@...icios.com,
        shawn@....icu, tstoyanov@...are.com, tglx@...utronix.de,
        alexey.budankov@...ux.intel.com, adrian.hunter@...el.com,
        songliubraving@...com, ravi.bangoria@...ux.ibm.com
Subject: Re: [PATCH V2]Perf:Return error code for perf_session__new function
 on failure


On 22/08/19 3:37 PM, Jiri Olsa wrote:
> On Thu, Aug 22, 2019 at 12:50:49PM +0530, Mamatha Inamdar wrote:
>> This Patch is to return error code of perf_new_session function
>> on failure instead of NULL
>> ----------------------------------------------
>> Test Results:
>>
>> Before Fix:
>>
>> $ perf c2c report -input
>> failed to open nput: No such file or directory
>>
>> $ echo $?
>> 0
>> ------------------------------------------
>> After Fix:
>>
>> $ ./perf c2c report -input
>> failed to open nput: No such file or directory
>>
>> $ echo $?
>> 254
> [root@...va perf]# ./perf c2c report -input
> failed to open nput: No such file or directory
> [root@...va perf]# echo $?
> 255
>
> hum, not sure why I'm getting 255.. but it looks good now
>
> Reviewed-by: Jiri Olsa <jolsa@...hat.com>
>
> thanks,
> jirka
Thank you