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

..

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