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authorOleg Nesterov <oleg@redhat.com>2015-11-15 20:33:14 +0100
committerIngo Molnar <mingo@kernel.org>2015-11-23 09:48:18 +0100
commit6a19005157c464b47b2082f2617d12bc11198a0d (patch)
tree90b75567427d005de8b2032fe2005cd08153f40c /include/linux/stop_machine.h
parent64038f292a1b33c7d46bd11f62f7798101152c00 (diff)
stop_machine: Don't disable preemption in stop_two_cpus()
Now that stop_two_cpus() path does not check cpu_active() we can remove preempt_disable(), it was only needed to ensure that stop_machine() can not be called after we observe cpu_active() == T and before we queue the new work. Also, turn the pointless and confusing ->executed check into WARN_ON(). We know that both works must be executed, otherwise we have a bug. And in fact I think that done->executed should die, see the next changes. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Tejun Heo <tj@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Milos Vyletel <milos@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20151115193314.GA8249@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/stop_machine.h')
0 files changed, 0 insertions, 0 deletions