On Sat, Mar 28, 2015 at 12:15:56PM -0400, Rik van Riel wrote: > On 03/28/2015 12:02 PM, Frederic Weisbecker wrote: > > 2015-03-27 22:50 GMT+01:00 <r...@redhat.com>: > >> From: Rik van Riel <r...@redhat.com> > >> > >> Currently there is no way to query which CPUs are in nohz_full > >> mode from userspace. > > > > Well you can watch dmesg | grep NO_HZ > > But surely sysfs is more convenient from an app. > > > > I guess it's ok, as long as it's strictly Read Only. Here it seems to > > be the case. And it's not chmod'able, right? > > I followed the other code for files in that directory. > > Quick testing shows that the cpu info files in > /sys/devices/system/cpu are chmoddable, but writing > to them fails with -EIO because there is no function > set up to handle writes. So yeah, read only :)
Perfect :-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
