wrapper/percpu-defs.h

   1 #ifndef _LTTNG_WRAPPER_PERCPU_DEFS_H
   2 #define _LTTNG_WRAPPER_PERCPU_DEFS_H
   3
   4 /*
   5  * wrapper/percpu-defs.h
   6  *
   7  * wrapper around linux/percpu-defs.h.
   8  *
   9  * Copyright (C) 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  10  *
  11  * This library is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public
  13  * License as published by the Free Software Foundation; only
  14  * version 2.1 of the License.
  15  *
  16  * This library is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19  * Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public
  22  * License along with this library; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  24  */
  25
  26 #include <linux/version.h>
  27
  28 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0)
  29
  30 #include <linux/percpu-defs.h>
  31
  32 #define lttng_this_cpu_ptr(ptr)         this_cpu_ptr(ptr)
  33
  34 #else /* #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0) */
  35
  36 #include <linux/percpu.h>
  37
  38 #define lttng_this_cpu_ptr(ptr)         (&__get_cpu_var(*(ptr)))
  39
  40 #endif /* #else #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0) */
  41
  42 #endif /* _LTTNG_WRAPPER_PERCPU_DEFS_H */