]> git.karo-electronics.de Git - linux-beck.git/commit
powerpc: Don't use local named register variable in current_thread_info
authorAnton Blanchard <anton@samba.org>
Fri, 31 Oct 2014 03:47:25 +0000 (14:47 +1100)
committerMichael Ellerman <mpe@ellerman.id.au>
Sun, 9 Nov 2014 22:59:31 +0000 (09:59 +1100)
commita3e5b356b3ab40b00ecb0f6fde445db719c100b5
treea330444b01df40d2f4a403ee61fd0f33623e5949
parente88f157de5e0b327b1b26e3260de4b16c07e2d19
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>
arch/powerpc/include/asm/thread_info.h