Move to kernel style SPDX license identifiers

[lttng-ust.git] / libringbuffer / getcpu.h

diff --git a/libringbuffer/getcpu.h b/libringbuffer/getcpu.h
index fbddb7989336b71235ba238eff9ae860c41a3d6e..bb815e66141171aa4af62595dcec4a9d66184d4c 100644 (file)
--- a/libringbuffer/getcpu.h
+++ b/libringbuffer/getcpu.h
@@ -1,24 +1,12 @@
-#ifndef _LTTNG_GETCPU_H
-#define _LTTNG_GETCPU_H
-
 /*
- * Copyright (c) 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; only
- * version 2.1 of the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
+ * SPDX-License-Identifier: LGPL-2.1-only
  *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  */
 
+#ifndef _LTTNG_GETCPU_H
+#define _LTTNG_GETCPU_H
+
 #include <urcu/compiler.h>
 #include <urcu/system.h>
 #include <urcu/arch.h>
@@ -47,10 +35,7 @@ int lttng_ust_get_cpu_internal(void)
  */
 #ifdef __linux__
 
-/* old uClibc versions didn't have sched_getcpu */
-#if defined(__UCLIBC__) && __UCLIBC_MAJOR__ == 0 && \
-       (__UCLIBC_MINOR__ < 9 || \
-        (__UCLIBC_MINOR__ == 9 && __UCLIBC_SUBLEVEL__ <= 32))
+#if !HAVE_SCHED_GETCPU
 #include <sys/syscall.h>
 #define __getcpu(cpu, node, cache)     syscall(__NR_getcpu, cpu, node, cache)
 /*
@@ -64,9 +49,9 @@ int lttng_ust_get_cpu_internal(void)
        ret = __getcpu(&cpu, NULL, NULL);
        if (caa_unlikely(ret < 0))
                return 0;
-       return c;
+       return cpu;
 }
-#else /* __UCLIBC__ */
+#else /* HAVE_SCHED_GETCPU */
 #include <sched.h>
 
 /*
@@ -82,7 +67,7 @@ int lttng_ust_get_cpu_internal(void)
                return 0;
        return cpu;
 }
-#endif /* __UCLIBC__ */
+#endif /* HAVE_SCHED_GETCPU */
 
 #elif (defined(__FreeBSD__) || defined(__CYGWIN__))