perf tools: Move xtensa barrier.h stuff to tools/arch/xtensa/include/asm/barrier.hWe will need it for atomic.h, so move it from the ad-hoc tools/perf/place to a tools/ subset of the kernel arch/ h
perf tools: Move xtensa barrier.h stuff to tools/arch/xtensa/include/asm/barrier.hWe will need it for atomic.h, so move it from the ad-hoc tools/perf/place to a tools/ subset of the kernel arch/ hierarchy.Cc: Adrian Hunter <adrian.hunter@intel.com>Cc: Borislav Petkov <bp@suse.de>Cc: David Ahern <dsahern@gmail.com>Cc: Don Zickus <dzickus@redhat.com>Cc: Frederic Weisbecker <fweisbec@gmail.com>Cc: Jiri Olsa <jolsa@redhat.com>Cc: Namhyung Kim <namhyung@kernel.org>Cc: Stephane Eranian <eranian@google.com>Link: http://lkml.kernel.org/n/tip-lp68dspbtjcwbpzd7x5c6zp5@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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