numa support: allow disabling numa support

[lttng-ust.git] / libringbuffer / shm.c

diff --git a/libringbuffer/shm.c b/libringbuffer/shm.c
index 135a2007b0e780221a0aa3cddeffe528a6e54733..0153578c93a2cfddf3bdd69ae57324b516086651 100644 (file)
--- a/libringbuffer/shm.c
+++ b/libringbuffer/shm.c
@@ -19,6 +19,7 @@
  */
 
 #define _LGPL_SOURCE
+#include <config.h>
 #include "shm.h"
 #include <unistd.h>
 #include <fcntl.h>
@@ -32,7 +33,9 @@
 #include <dirent.h>
 #include <lttng/align.h>
 #include <limits.h>
+#ifdef HAVE_LIBNUMA
 #include <numa.h>
+#endif
 #include <helper.h>
 #include <ust-fd.h>
 
@@ -247,8 +250,9 @@ struct shm_object *shm_object_table_alloc(struct shm_object_table *table,
                        int stream_fd,
                        int cpu)
 {
-       int oldnode, node;
        struct shm_object *shm_object;
+#ifdef HAVE_LIBNUMA
+       int oldnode, node;
 
        oldnode = numa_preferred();
        if (cpu >= 0) {
@@ -258,6 +262,7 @@ struct shm_object *shm_object_table_alloc(struct shm_object_table *table,
        }
        if (cpu < 0 || node < 0)
                numa_set_localalloc();
+#endif /* HAVE_LIBNUMA */
        switch (type) {
        case SHM_OBJECT_SHM:
                shm_object = _shm_object_table_alloc_shm(table, memory_map_size,
@@ -269,7 +274,9 @@ struct shm_object *shm_object_table_alloc(struct shm_object_table *table,
        default:
                assert(0);
        }
+#ifdef HAVE_LIBNUMA
        numa_set_preferred(oldnode);
+#endif /* HAVE_LIBNUMA */
        return shm_object;
 }