Installed headers relicensing and cleanup

[lttng-ust.git] / liblttng-ust / compat.h

diff --git a/liblttng-ust/compat.h b/liblttng-ust/compat.h
new file mode 100644 (file)
index 0000000..8ee4470
--- /dev/null
+++ b/liblttng-ust/compat.h
@@ -0,0 +1,30 @@
+#ifndef _UST_COMPAT_H
+#define _UST_COMPAT_H
+
+/*
+ * Copyright (C) 2011   Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
+ * OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.
+ *
+ * Permission is hereby granted to use or copy this program
+ * for any purpose,  provided the above notices are retained on all copies.
+ * Permission to modify the code and to distribute modified code is granted,
+ * provided the above notices are retained, and a notice that the code was
+ * modified is included with the above copyright notice.
+ */
+
+#include <sys/syscall.h>
+
+#ifdef __UCLIBC__
+#define __getcpu(cpu, node, cache)     syscall(__NR_getcpu, cpu, node, cache)
+static inline
+int sched_getcpu(void)
+{
+       int c, s;
+
+       s = __getcpu(&c, NULL, NULL);
+       return (s == -1) ? s : c;
+}
+#endif /* __UCLIBC__ */
+#endif /* _UST_COMPAT_H */