linux/include/uapi
Peter Zijlstra bf378d341e perf: Fix perf ring buffer memory ordering
The PPC64 people noticed a missing memory barrier and crufty old
comments in the perf ring buffer code. So update all the comments and
add the missing barrier.

When the architecture implements local_t using atomic_long_t there
will be double barriers issued; but short of introducing more
conditional barrier primitives this is the best we can do.

Reported-by: Victor Kaplansky <victork@il.ibm.com>
Tested-by: Victor Kaplansky <victork@il.ibm.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: michael@ellerman.id.au
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Michael Neuling <mikey@neuling.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: anton@samba.org
Cc: benh@kernel.crashing.org
Link: http://lkml.kernel.org/r/20131025173749.GG19466@laptop.lan
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-29 12:01:19 +01:00
..
asm-generic allow O_TMPFILE to work with O_WRONLY 2013-07-20 03:11:32 +04:00
drm drm: Pad drm_mode_get_connector to 64-bit boundary 2013-10-18 07:42:23 +01:00
linux perf: Fix perf ring buffer memory ordering 2013-10-29 12:01:19 +01:00
mtd UBI: document UBI_IOCVOLUP better in user header 2013-05-29 15:19:26 +03:00
rdma IB/core: Temporarily disable create_flow/destroy_flow uverbs 2013-10-21 09:44:17 -07:00
scsi FCoE Updates for 3.9 2013-03-01 09:10:08 +00:00
sound ALSA: hdspm - Fix SNDRV_HDSPM_IOCTL_GET_LTC 2013-08-19 20:09:09 +02:00
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