documentation under
https://github.com/lttng/lttng-ust/tree/v{lttng_version}/doc/examples/getcpu-override[`examples/getcpu-override`].
+`LTTNG_UST_MAP_POPULATE_POLICY`::
++
+--
+If set, override the policy used to populate shared memory pages
+within the application. The expected values are:
+
+`none`:::
+ Do not pre-populate any pages, take minor faults on first access
+ while tracing.
+
+`cpu_possible`:::
+ Pre-populate pages for all possible CPUs in the system, as
+ listed by `/sys/devices/system/cpu/possible`.
+--
++
+Default: `none`. If the policy is unknown, use the default.
+
`LTTNG_UST_REGISTER_TIMEOUT`::
Waiting time for the _registration done_ session daemon command
before proceeding to execute the main program (milliseconds).