/*
* libringbuffer/smp.h
*
- * Copyright 2011 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
- * Dual LGPL v2.1/GPL v2 license.
+ * 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.
+ *
+ * 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
*/
-#include <ust/core.h>
+#include "getcpu.h"
/*
* 4kB of per-cpu data available. Enough to hold the control structures,
return __num_possible_cpus;
}
-/*
- * get_cpu() returns the current CPU number. It may change due to
- * migration, so it is only statistically accurate.
- */
-#ifndef UST_VALGRIND
-static inline
-int get_cpu(void)
-{
- int cpu;
-
- cpu = sched_getcpu();
- if (caa_likely(cpu >= 0))
- return cpu;
- /*
- * If getcpu(2) is not implemented in the Kernel use CPU 0 as fallback.
- */
- return 0;
-}
-
-#else /* #else #ifndef UST_VALGRIND */
-static inline
-int get_cpu(void)
-{
- /*
- * Valgrind does not support the sched_getcpu() vsyscall.
- * It causes it to detect a segfault in the program and stop it.
- * So if we want to check libust with valgrind, we have to refrain
- * from using this call. TODO: it would probably be better to return
- * other values too, to better test it.
- */
- return 0;
-}
-#endif /* #else #ifndef UST_VALGRIND */
-
-static inline
-void put_cpu(void)
-{
-}
-
#define for_each_possible_cpu(cpu) \
for ((cpu) = 0; (cpu) < num_possible_cpus(); (cpu)++)