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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>		11 years ago
..
Makefile	uprobes: Move to kernel/events/	13 years ago
callchain.c	perf: Roll back callchain buffer refcount under the callchain mutex	12 years ago
core.c	perf: Disable PERF_RECORD_MMAP2 support	11 years ago
hw_breakpoint.c	hw_breakpoint: Introduce "struct bp_cpuinfo"	12 years ago
internal.h	perf: Fix mmap() accounting hole	12 years ago
ring_buffer.c	perf: Fix perf ring buffer memory ordering	11 years ago
uprobes.c	uprobes: Fix utask->depth accounting in handle_trampoline()	12 years ago