perf bench: Move HAVE_PTHREAD_ATTR_SETAFFINITY_NP into bench.h

Both futex and epoll need this call, and can cause build failure on
systems that don't have it pthread_attr_setaffinity_np().

Signed-off-by: Davidlohr Bueso <[e-mail]>
Reported-by: Arnaldo Carvalho de Melo <[e-mail]>
Cc: Andrew Morton <[e-mail]>
Cc: Davidlohr Bueso <[e-mail]>
Cc: Jason Baron <[e-mail]>
Link: http://lkml.kernel.org/r/20181109210719.pr7ohayuwqmfp2wl@linux-r8p5
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/bench/bench.h

···
 extern int bench_format;
 extern unsigned int bench_repeat;
 
+#ifndef HAVE_PTHREAD_ATTR_SETAFFINITY_NP
+#include <pthread.h>
+#include <linux/compiler.h>
+static inline int pthread_attr_setaffinity_np(pthread_attr_t *attr __maybe_unused,
+					      size_t cpusetsize __maybe_unused,
+					      cpu_set_t *cpuset __maybe_unused)
+{
+	return 0;
+}
+#endif
+
 #endif

tools/perf/bench/futex.h

···
 	return futex(uaddr, FUTEX_CMP_REQUEUE, nr_wake, nr_requeue, uaddr2,
 		 val, opflags);
 }
-
-#ifndef HAVE_PTHREAD_ATTR_SETAFFINITY_NP
-#include <pthread.h>
-#include <linux/compiler.h>
-static inline int pthread_attr_setaffinity_np(pthread_attr_t *attr __maybe_unused,
-					      size_t cpusetsize __maybe_unused,
-					      cpu_set_t *cpuset __maybe_unused)
-{
-	return 0;
-}
-#endif
-
 #endif /* _FUTEX_H */