From: Anton Blanchard <anton@samba.org>
Date: Fri, 31 Oct 2014 03:47:25 +0000 (+1100)
Subject: powerpc: Don't use local named register variable in current_thread_info
X-Git-Tag: omap-for-v3.19/fixes-rc1~123^2~41
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a3e5b356b3ab;p=pandora-kernel.git

powerpc: Don't use local named register variable in current_thread_info

LLVM doesn't support local named register variables and is unlikely
to. current_thread_info is using one, fix it by moving it out and
calling it __current_r1().

I gave it a bit of an obscure name because we don't want anyone else
using it - they should use current_stack_pointer(). This specific
case is performance critical and we can't afford to call a function
to get it. Furthermore it isn't important to know exactly where in
the stack we are since we mask the lower bits.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---

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