Paul E. McKenney b7703ca834 cpu: Defer smpboot kthread unparking until CPU known to scheduler ... Currently, smpboot_unpark_threads() is invoked before the incoming CPU has been added to the scheduler's runqueue structures. This might potentially cause the unparked kthread to run on the wrong CPU, since the correct CPU isn't fully set up yet. That causes a sporadic, hard to debug boot crash triggering on some systems, reported by Borislav Petkov, and bisected down to: 2a442c9c6453 ("x86: Use common outgoing-CPU-notification code") This patch places smpboot_unpark_threads() in a CPU hotplug notifier with priority set so that these kthreads are unparked just after the CPU has been added to the runqueues. Change-Id: I8921987de9c2a2f475cc63dc82662d6ebf6e8725 Reported-and-tested-by: Borislav Petkov <bp@suse.de> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> Git-commit: 00df35f991914db6b8bde8cf09808e19a9cffc3d Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git Signed-off-by: Matt Wagantall <mattw@codeaurora.org>		2016-10-29 23:12:40 +08:00
..
calibrate.c	init: check printed flag to skip printing message	2012-03-23 16:58:38 -07:00
do_mounts.c	init: don't try mounting device as nfs root unless type fully matches	2012-05-05 10:04:40 -07:00
do_mounts.h
do_mounts_initrd.c	get rid of pointless includes of ext2_fs.h	2012-03-31 16:03:15 -04:00
do_mounts_md.c
do_mounts_rd.c	new helper: ext2_image_size()	2012-03-31 16:03:16 -04:00
initramfs.c	init/initramfs.c: should use umode_t	2012-01-03 22:55:14 -05:00
Kconfig	Merge branch 'goog/googly' (early part) into goog/msm-soc-3.4	2013-02-25 11:25:46 -08:00
main.c	cpu: Defer smpboot kthread unparking until CPU known to scheduler	2016-10-29 23:12:40 +08:00
Makefile
noinitramfs.c
version.c	proc: Usable inode numbers for the namespace file descriptors.	2015-07-13 11:18:01 -07:00