From: Vineet Gupta <vgupta@synopsys.com>
Date: Thu, 6 Aug 2015 13:41:06 +0000 (+0530)
Subject: ARC: ensure futex ops are atomic in !LLSC config
X-Git-Tag: omap-for-v4.3/fixes-merge-window~11^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=eb2cd8b72b08fe56998600aee8a5dff93f7be5a2;p=pandora-kernel.git

ARC: ensure futex ops are atomic in !LLSC config

W/o hardware assisted atomic r-m-w the best we can do is to disable
preemption.

Cc: David Hildenbrand <dahi@linux.vnet.ibm.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Michel Lespinasse <walken@google.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
---

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