Re: [PATCH] perf tools: Fix perf version generation

[Runzhen Wang <runzhen@linux.vnet.ibm.com>]

On 05/08/2013 07:06 PM, Robert Richter wrote:
> On 08.05.13 18:39:07, Xiao Guangrong wrote:
I remember that Wang has posted a similar patch to fix this bug several
>> weeks ago:
http://lkml.org/lkml/2013/4/24/70
>>
>> But have no response yet.
>
> Yes, this patch would fix the version tag too.
>
> The patch I wrote also reports a commit id even in the case when no
> tag is found. This was the original reason why I stumbled over this.
> Assume a repository for testing there you just push the commit id to.
> This does not contain any tags but a valid commit id. Now, it
> determines the version tag from the makefile but does not drop the
> commit id.
>
> -Robert
>
Hi, Robert,

for http://lkml.org/lkml/2013/4/24/70
I download linux-3.9.1.tar.xz(no git repo) and apply my patch, it works:

# ./perf --version
perf version 3.9.1

your patch works when the repo only has commit info but no tags info, 
but I confuse that whether this situation is Real?

Maybe you prepare for a RARE case but increase the code's **Complexity** ?

thanks