On Wed, Aug 27, 2014 at 6:32 AM, Tom Hacohen <[email protected]> wrote:
> We use @fix, not @bug. :)
>
> --
> Tom.
>
> On 27/08/14 10:27, Carsten Haitzler wrote:
>> raster pushed a commit to branch efl-1.11.
>>
>> http://git.enlightenment.org/core/efl.git/commit/?id=26783f45dd419873f4dc2a9ab3a1e4b421f2c4ca
>>
>> commit 26783f45dd419873f4dc2a9ab3a1e4b421f2c4ca
>> Author: Carsten Haitzler (Rasterman) <[email protected]>
>> Date:   Wed Aug 27 18:26:58 2014 +0900
>>
>>      ecore vsync - work around old kernels by blacklisting them
>>
>>      this is a bug workaround apparently old kernels that seems to get
>>      vsync and timestamps wrong. 3.14 kernels and up only for now
>>
>>      @bug
>> ---
>>   src/lib/ecore_x/xlib/ecore_x_vsync.c | 21 +++++++++++++++++++++
>>   1 file changed, 21 insertions(+)
>>
>> diff --git a/src/lib/ecore_x/xlib/ecore_x_vsync.c 
>> b/src/lib/ecore_x/xlib/ecore_x_vsync.c
>> index ec41d0d..1924dfc 100644
>> --- a/src/lib/ecore_x/xlib/ecore_x_vsync.c
>> +++ b/src/lib/ecore_x/xlib/ecore_x_vsync.c
>> @@ -345,6 +345,27 @@ _drm_init(void)
>>    */
>>           return 0;
>>        }
>> +   // only do this on new kernels = let's say 3.14 and up. 3.16 definitely
>> +   // works
>> +     {
>> +        Eina_Bool ok = EINA_FALSE;
>> +
>> +        FILE *fp = fopen("/proc/sys/kernel/osrelease", "r");
>> +        if (fp)
>> +          {
>> +             if (fgets(buf, sizeof(buf), fp))
>> +               {
>> +                  int vmaj = 0, vmin = 0;
>> +
>> +                  if (sscanf(buf, "%i.%i.%*s", &vmaj, &vmin) == 2)
>> +                    {
>> +                       if ((vmaj >= 3) && (vmin >= 14)) ok = EINA_TRUE;
>> +                    }
>> +               }
>> +             fclose(fp);
>> +          }
>> +        if (!ok) return 0;

So if a 3.11 kernel has been patch to do the right thing, you still
return 0.  Parsing the kernel version is in general a bad thing to do.

-- 
Lucas De Marchi

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