On Tue, Dec 10, 2013 at 1:49 AM, Michel Dänzer michel@daenzer.net wrote:
On Mon, 2013-12-09 at 23:45 +0100, Marek Olšák wrote:
On Mon, Dec 9, 2013 at 9:30 PM, Lauri Kasanen cand@gmx.com wrote:
Note that the hotness calculation will be in userspace, as only there are the necessary counters available. So the finished hotness score will be passed to the kernel, instead of sending all the necessary data there. Ought to be less context switches that way.
Sounds like this could be abused by userspace though...
Anything can be abused by userspace, but is there any security risk? I don't think so. The CS ioctl is way more dangerous than this.
Marek