tree f48cae7b41ac77b5966f614393f4fca5c6a4f9e3
parent 5db66334a7e83cda70fb6193dcaa2590da3a1b7d
author Thomas Gleixner <tglx@linutronix.de> 1417769309 +0000
committer Thomas Gleixner <tglx@linutronix.de> 1418735294 +0100

x86, smpboot: Remove pointless preempt_disable() in native_smp_prepare_cpus()

There is no reason to keep preemption disabled in this function.

We only have two other threads live: kthreadd and idle. Neither of
them is going to preempt. But that preempt_disable forces all the code
inside to do GFP_ATOMIC allocations which is just insane.

Remove it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Borislav Petkov <bp@alien8.de>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: x86@kernel.org
Link: http://lkml.kernel.org/r/20141205084147.153643952@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>