Chris Wilson 86fffe4a61 kernel: remove stop_machine() Kconfig dependency ... Currently the full stop_machine() routine is only enabled on SMP if module unloading is enabled, or if the CPUs are hotpluggable. This leads to configurations where stop_machine() is broken as it will then only run the callback on the local CPU with irqs disabled, and not stop the other CPUs or run the callback on them. For example, this breaks MTRR setup on x86 in certain configs since ea8596bb2d ("kprobes/x86: Remove unused text_poke_smp() and text_poke_smp_batch() functions") as the MTRR is only established on the boot CPU. This patch removes the Kconfig option for STOP_MACHINE and uses the SMP and HOTPLUG_CPU config options to compile the correct stop_machine() for the architecture, removing the false dependency on MODULE_UNLOAD in the process. Link: https://lkml.org/lkml/2014/10/8/124 References: https://bugs.freedesktop.org/show_bug.cgi?id=84794 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Acked-by: Ingo Molnar <mingo@kernel.org> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Cc: Pranith Kumar <bobby.prani@gmail.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: Vladimir Davydov <vdavydov@parallels.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: H. Peter Anvin <hpa@linux.intel.com> Cc: Tejun Heo <tj@kernel.org> Cc: Iulia Manda <iulia.manda21@gmail.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Chuck Ebbert <cebbert.lkml@gmail.com> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2015-12-12 10:15:34 -08:00
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Kconfig	kernel: remove stop_machine() Kconfig dependency	2015-12-12 10:15:34 -08:00
Makefile	…
calibrate.c	…
do_mounts.c	init/do_mounts.c: add create_dev() failure log	2015-06-25 17:00:42 -07:00
do_mounts.h	…
do_mounts_initrd.c	…
do_mounts_md.c	…
do_mounts_rd.c	…
init_task.c	…
initramfs.c	kexec: split kexec_load syscall from kexec core code	2015-09-10 13:29:01 -07:00
main.c	kmod: use system_unbound_wq instead of khelper	2015-09-10 13:29:01 -07:00
noinitramfs.c	…
version.c	copy address of proc_ns_ops into ns_common	2014-12-04 14:34:47 -05:00