Drop support for kernels < 4.4 from LTTng tracer core

[lttng-modules.git] / src / lttng-statedump-impl.c

diff --git a/src/lttng-statedump-impl.c b/src/lttng-statedump-impl.c
index 0593f4c8bd22ee3e6fbd62f2535ba08a4e97eff0..22e3628ba459c9d0b56db7d2e9b90417ce71fed8 100644 (file)
--- a/src/lttng-statedump-impl.c
+++ b/src/lttng-statedump-impl.c
@@ -601,21 +601,8 @@ void lttng_statedump_process_ns(struct lttng_kernel_session *session,
                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);
@@ -631,14 +618,6 @@ void lttng_statedump_process_ns(struct lttng_kernel_session *session,
                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