perf build: Move feature checks code under tools/build

Moving feature checks code under tools/build directory.

Changing also $feature_dir to point to new feature directory location
and perf Makefiles to include Makefile.feature from new location.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <david.ahern@oracle.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/tip-3lamtb30dhf4wo99y1n8kxg0@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/tools/build/feature/test-pthread-attr-setaffinity-np.c b/tools/build/feature/test-pthread-attr-setaffinity-np.c
new file mode 100644
index 000000000000..fdada5e8d454
--- /dev/null
+++ b/tools/build/feature/test-pthread-attr-setaffinity-np.c
@@ -0,0 +1,17 @@
+#include <stdint.h>
+#include <pthread.h>
+#include <sched.h>
+
+int main(void)
+{
+	int ret = 0;
+	pthread_attr_t thread_attr;
+	cpu_set_t cs;
+
+	pthread_attr_init(&thread_attr);
+	CPU_ZERO(&cs);
+
+	ret = pthread_attr_setaffinity_np(&thread_attr, sizeof(cs), &cs);
+
+	return ret;
+}