On 09/28/2015 06:40 PM, Andy Lutomirski wrote:
If I were writing a program that used this feature, I think I'd want to know early that it's not going to work so I can tell the admin very loudly to fix it. Maybe just failing the prctl would be enough. If someone turns on the prctl and then changes their affinity, maybe we should treat it as though they're just asking for trouble and allow it.
Yes, the original Tilera implementation required the task to be affinitized to a single, nohz_full cpu before you could call the prctl() successfully. I think I will re-instate that for the patch series, and if the user then re-affinitizes to a non-nohz_full core later, well, "don't do that then". -- Chris Metcalf, EZChip Semiconductor http://www.ezchip.com -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
