Mike Galbraith 5258f386ea sched/autogroup: Fix crash on reboot when autogroup is disabled ... Due to these two commits: 8323f26ce3 sched: Fix race in task_group() 800d4d30c8 sched, autogroup: Stop going ahead if autogroup is disabled ... autogroup scheduling's dynamic knobs are wrecked. With both patches applied, all you have to do to crash a box is disable autogroup during boot up, then reboot.. boom, NULL pointer dereference due to 800d4d30 not allowing autogroup to move things, and 8323f26ce making that the only way to switch runqueues. Remove most of the (dysfunctional) knobs and turn the remaining sched_autogroup_enabled knob readonly. If the user fiddles with cgroups hereafter, once tasks are moved, autogroup won't mess with them again unless they call setsid(). No knobs, no glitz, nada, just a cute little thing folks can turn on if they don't want to muck about with cgroups and/or systemd. Signed-off-by: Mike Galbraith <efault@gmx.de> Cc: Xiaotian Feng <xtfeng@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Xiaotian Feng <dannyfeng@tencent.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: <stable@vger.kernel.org> # v3.6 Link: http://lkml.kernel.org/r/1351451963.4999.8.camel@maggy.simpson.net Signed-off-by: Ingo Molnar <mingo@kernel.org>		2012-10-30 10:26:04 +01:00
..
array.c	c/r: procfs: add arg_start/end, env_start/end and exit_code members to /proc/$pid/stat	2012-05-31 17:49:32 -07:00
base.c	sched/autogroup: Fix crash on reboot when autogroup is disabled	2012-10-30 10:26:04 +01:00
cmdline.c
consoles.c
cpuinfo.c
devices.c
generic.c	stop passing nameidata to ->lookup()	2012-07-14 16:34:32 +04:00
inode.c	avoid iput() from flusher thread	2012-05-28 09:54:45 -07:00
internal.h	stop passing nameidata to ->lookup()	2012-07-14 16:34:32 +04:00
interrupts.c
Kconfig
kcore.c	fs/proc/kcore.c: make get_sparsemem_vmemmap_info() static	2012-03-23 16:58:42 -07:00
kmsg.c
loadavg.c
Makefile
meminfo.c	fs/proc/meminfo.c: fix compilation error	2011-12-09 07:50:28 -08:00
mmu.c
namespaces.c	stop passing nameidata to ->lookup()	2012-07-14 16:34:32 +04:00
nommu.c
page.c	pagemap: export KPF_THP	2012-03-21 17:54:57 -07:00
proc_devtree.c	of: Improve prom_update_property() function	2012-07-11 15:26:51 +10:00
proc_net.c	stop passing nameidata to ->lookup()	2012-07-14 16:34:32 +04:00
proc_sysctl.c	fs/proc: fix potential unregister_sysctl_table hang	2012-09-17 10:32:03 -07:00
proc_tty.c
root.c	VFS: Pass mount flags to sget()	2012-07-14 16:38:34 +04:00
softirqs.c
stat.c	proc: stats: Use arch_idle_time for idle and iowait times if available	2012-03-30 15:43:33 +02:00
task_mmu.c	proc/smaps: show amount of nonlinear ptes in vma	2012-05-31 17:49:29 -07:00
task_nommu.c	proc: remove mm_for_maps()	2012-05-31 17:49:28 -07:00
uptime.c	Merge branch 'sched/core' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into cputime-tip	2011-12-19 19:23:15 +01:00
version.c
vmcore.c	fadump: Introduce cleanup routine to invalidate /proc/vmcore.	2012-02-23 10:50:02 +11:00