Hello, On Tue, Apr 22, 2014 at 10:29:37AM +0800, Li Zhong wrote: > The probe/release files are attribute files for cpu subsys, looks like > following in sysfs dirs > > $ cd /sys/devices/system/cpu/ > $ ls -l > total 0 > drwxr-xr-x. 7 root root 0 Apr 17 19:00 cpu0 > drwxr-xr-x. 4 root root 0 Apr 17 19:00 cpu1 > drwxr-xr-x. 4 root root 0 Apr 17 19:00 cpu10 > ...... > drwxr-xr-x. 3 root root 0 Apr 20 08:00 cpufreq > drwxr-xr-x. 2 root root 0 Apr 20 08:00 cpuidle > -rw-------. 1 root root 65536 Apr 21 00:28 dscr_default > -r--r--r--. 1 root root 65536 Apr 21 00:28 kernel_max > -r--r--r--. 1 root root 65536 Apr 21 00:28 offline > -r--r--r--. 1 root root 65536 Sep 4 2014 online > -r--r--r--. 1 root root 65536 Apr 21 00:28 possible > drwxr-xr-x. 2 root root 0 Apr 20 08:00 power > -r--r--r--. 1 root root 65536 Apr 17 20:46 present > --w-------. 1 root root 65536 Apr 21 00:28 probe <----- > --w-------. 1 root root 65536 Apr 21 00:28 release <----- > -rw-------. 1 root root 65536 Apr 21 00:28 subcores_per_core > -rw-r--r--. 1 root root 65536 Apr 21 00:28 uevent > > From the code, it seems cpu subsys won't be unregistered, and it doesn't > make sense to remove all the cpus in the system.
I don't think I'm following you. Are you saying that no files which are protected under the hotplug lock that cpu subsys uses are removed during offlining? Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
