Paul E. McKenney 00df35f991 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: 2a442c9c64 ("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. 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>		2015-04-13 08:25:16 +02:00
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Kconfig	rcu: Add Kconfig option to expedite grace periods during boot	2015-02-26 12:03:03 -08:00
Makefile	…
calibrate.c	…
do_mounts.c	init: fix read-write root mount	2014-12-17 08:27:14 -05:00
do_mounts.h	…
do_mounts_initrd.c	…
do_mounts_md.c	…
do_mounts_rd.c	initramfs: support initramfs that is bigger than 2GiB	2014-08-08 15:57:26 -07:00
init_task.c	…
initramfs.c	init/initramfs.c: resolve shadow warnings	2014-10-14 02:18:22 +02:00
main.c	cpu: Defer smpboot kthread unparking until CPU known to scheduler	2015-04-13 08:25:16 +02:00
noinitramfs.c	…
version.c	copy address of proc_ns_ops into ns_common	2014-12-04 14:34:47 -05:00