Introduce LTTNG_UST_MAP_POPULATE_POLICY environment variable

[lttng-ust.git] / src / common / ringbuffer / ring_buffer_backend.c

diff --git a/src/common/ringbuffer/ring_buffer_backend.c b/src/common/ringbuffer/ring_buffer_backend.c
index 27c335d50129aa3594897d1957fe4a237fc6078d..82dc247adb16c5240c6249a87778f7842d75e81e 100644 (file)
--- a/src/common/ringbuffer/ring_buffer_backend.c
+++ b/src/common/ringbuffer/ring_buffer_backend.c
@@ -21,6 +21,7 @@
 #include "common/smp.h"
 #include "shm.h"
 #include "common/align.h"
+#include "common/populate.h"
 
 /**
  * lib_ring_buffer_backend_allocate - allocate a channel buffer
@@ -346,7 +347,8 @@ int channel_backend_init(struct channel_backend *chanb,
                        struct shm_object *shmobj;
 
                        shmobj = shm_object_table_alloc(handle->table, shmsize,
-                                       SHM_OBJECT_SHM, stream_fds[i], i);
+                                       SHM_OBJECT_SHM, stream_fds[i], i,
+                                       lttng_ust_map_populate_cpu_is_enabled(i));
                        if (!shmobj)
                                goto end;
                        align_shm(shmobj, __alignof__(struct lttng_ust_ring_buffer));
@@ -365,7 +367,8 @@ int channel_backend_init(struct channel_backend *chanb,
                struct lttng_ust_ring_buffer *buf;
 
                shmobj = shm_object_table_alloc(handle->table, shmsize,
-                                       SHM_OBJECT_SHM, stream_fds[0], -1);
+                                       SHM_OBJECT_SHM, stream_fds[0], -1,
+                                       lttng_ust_map_populate_is_enabled());
                if (!shmobj)
                        goto end;
                align_shm(shmobj, __alignof__(struct lttng_ust_ring_buffer));