user_ns = user_ns ? user_ns->parent : NULL;
} while (user_ns);
- /*
- * Back and forth on locking strategy within Linux upstream for nsproxy.
- * See Linux upstream commit 728dba3a39c66b3d8ac889ddbe38b5b1c264aec3
- * "namespaces: Use task_lock and not rcu to protect nsproxy"
- * for details.
- */
-#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,17,0) || \
- LTTNG_UBUNTU_KERNEL_RANGE(3,13,11,36, 3,14,0,0) || \
- LTTNG_UBUNTU_KERNEL_RANGE(3,16,1,11, 3,17,0,0) || \
- LTTNG_RHEL_KERNEL_RANGE(3,10,0,229,13,0, 3,11,0,0,0,0))
proxy = p->nsproxy;
-#else
- rcu_read_lock();
- proxy = task_nsproxy(p);
-#endif
+
if (proxy) {
#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,6,0))
trace_lttng_statedump_process_cgroup_ns(session, p, proxy->cgroup_ns);
trace_lttng_statedump_process_time_ns(session, p, proxy->time_ns);
#endif
}
-#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,17,0) || \
- LTTNG_UBUNTU_KERNEL_RANGE(3,13,11,36, 3,14,0,0) || \
- LTTNG_UBUNTU_KERNEL_RANGE(3,16,1,11, 3,17,0,0) || \
- LTTNG_RHEL_KERNEL_RANGE(3,10,0,229,13,0, 3,11,0,0,0,0))
- /* (nothing) */
-#else
- rcu_read_unlock();
-#endif
}
static