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SubjectRe: [PATCH 09/13] perf target: Introduce perf_target_errno
On 5/3/12 2:42 PM, Arnaldo Carvalho de Melo wrote:
> Em Thu, May 03, 2012 at 02:34:20PM -0600, David Ahern escreveu:
>> On 5/2/12 12:59 PM, Arnaldo Carvalho de Melo wrote:
>>> Also it would be better to have it as PERF_ERRNO__PID_OVERRIDE_CPU, etc.
>>
>> I thought you wanted subsystem based errno's (PERF_TARGET__XXXXX)
>> versus one big set (PERF_ERRNO__XXXXX). Did you change your mind?
>
> Oops, I didn't realize PID being the subsys, then yeah, that is ok.
>
> But that would make it PERF_ERR__TARGET_, as PERF_TARGET__ doesn't
> straight away brings back "error enumeration", at least for me :)
>
> But this is getting overly long, ideas?
>
> PERF_ we need, its libperf's "namespace", then ERRNO looks needed too,
> heck, make it long:
>
> PERF_ERRNO_TARGET__PID_OVERRIDE_CPU
>
> After all most of the time this will just be inside the function setting
> the error and the strerrno function that will convert this to an string,
> right?

Agreed, the long macro name shouldn't be visible outside of the depths
of the perf files that set it and convert it to a string.

David


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