Michael Ellerman 78e05b1421 powerpc: Add smp_mb()s to arch_spin_unlock_wait() ... Similar to the previous commit which described why we need to add a barrier to arch_spin_is_locked(), we have a similar problem with spin_unlock_wait(). We need a barrier on entry to ensure any spinlock we have previously taken is visibly locked prior to the load of lock->slock. It's also not clear if spin_unlock_wait() is intended to have ACQUIRE semantics. For now be conservative and add a barrier on exit to give it ACQUIRE semantics. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>		2014-08-13 15:13:27 +10:00
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alloc.c	Disintegrate asm/system.h for PowerPC	2012-03-28 18:30:02 +01:00
checksum_32.S
checksum_64.S	powerpc: Restore registers on error exit from csum_partial_copy_generic()	2013-10-03 17:22:42 +10:00
checksum_wrappers_64.c	powerpc: various straight conversions from module.h --> export.h	2011-10-31 19:30:44 -04:00
code-patching.c	powerpc: Move the patch_exception to a common place	2013-12-02 14:06:54 +11:00
copy_32.S
copypage_64.S	powerpc: Exported functions __clear_user and copy_page use r2 so need _GLOBAL_TOC()	2014-06-05 13:20:41 +10:00
copypage_power7.S	powerpc: Fix unsafe accesses to parameter area in ELFv2	2014-04-23 10:05:24 +10:00
copyuser_64.S	powerpc: Remove power3 from comments	2014-07-28 14:10:26 +10:00
copyuser_power7.S	powerpc: Fix unsafe accesses to parameter area in ELFv2	2014-04-23 10:05:24 +10:00
crtsavres.S	powerpc: Add vr save/restore functions	2014-01-15 13:46:43 +11:00
devres.c	powerpc: various straight conversions from module.h --> export.h	2011-10-31 19:30:44 -04:00
div64.S
feature-fixups-test.S
feature-fixups.c	powerpc: Copy down exception vectors after feature fixups	2011-11-16 14:47:54 +11:00
hweight_64.S	powerpc: No need to use dot symbols when branching to a function	2014-04-23 10:05:16 +10:00
ldstfp.S	powerpc: Fixes for instructions not using correct register naming	2012-07-10 19:18:16 +10:00
locks.c	powerpc: Add smp_mb()s to arch_spin_unlock_wait()	2014-08-13 15:13:27 +10:00
Makefile	powerpc: memcpy optimization for 64bit LE	2014-04-30 15:26:18 +10:00
mem_64.S	powerpc: use _GLOBAL_TOC for memmove	2014-07-22 15:56:04 +10:00
memcpy_64.S	Merge remote-tracking branch 'anton/abiv2' into next	2014-05-05 20:57:12 +10:00
memcpy_power7.S	powerpc: Fix unsafe accesses to parameter area in ELFv2	2014-04-23 10:05:24 +10:00
rheap.c	powerpc: various straight conversions from module.h --> export.h	2011-10-31 19:30:44 -04:00
sstep.c	powerpc: Fix bugs in emulate_step()	2014-07-22 15:55:51 +10:00
string_64.S	powerpc: Exported functions __clear_user and copy_page use r2 so need _GLOBAL_TOC()	2014-06-05 13:20:41 +10:00
string.S	powerpc: 64bit optimised __clear_user	2012-07-03 14:14:41 +10:00
usercopy_64.c
vmx-helper.c	powerpc: POWER7 optimised copy_page using VMX and enhanced prefetch	2012-07-03 14:14:44 +10:00
xor_vmx.c	powerpc: Add VMX optimised xor for RAID5	2013-10-30 16:02:28 +11:00