Cleanup: remove trailing white spaces across project

[lttng-modules.git] / lttng-events.h

diff --git a/lttng-events.h b/lttng-events.h
index 8fe36a7326121f7f7325112c7d77b0105e1eb9ea..78b427a317d18972e9cea252b62154fc11b66b4d 100644 (file)
--- a/lttng-events.h
+++ b/lttng-events.h
@@ -489,19 +489,36 @@ struct lttng_dynamic_len_stack {
 DECLARE_PER_CPU(struct lttng_dynamic_len_stack, lttng_dynamic_len_stack);
 
 /*
- * struct lttng_pid_tracker declared in header due to deferencing of *v
+ * struct lttng_id_tracker declared in header due to deferencing of *v
  * in RCU_INITIALIZER(v).
  */
-#define LTTNG_PID_HASH_BITS    6
-#define LTTNG_PID_TABLE_SIZE   (1 << LTTNG_PID_HASH_BITS)
+#define LTTNG_ID_HASH_BITS     6
+#define LTTNG_ID_TABLE_SIZE    (1 << LTTNG_ID_HASH_BITS)
 
-struct lttng_pid_tracker {
-       struct hlist_head pid_hash[LTTNG_PID_TABLE_SIZE];
+enum tracker_type {
+       TRACKER_PID,
+       TRACKER_VPID,
+       TRACKER_UID,
+       TRACKER_VUID,
+       TRACKER_GID,
+       TRACKER_VGID,
+
+       TRACKER_UNKNOWN,
+};
+
+struct lttng_id_tracker_rcu {
+       struct hlist_head id_hash[LTTNG_ID_TABLE_SIZE];
 };
 
-struct lttng_pid_hash_node {
+struct lttng_id_tracker {
+       struct lttng_session *session;
+       enum tracker_type tracker_type;
+       struct lttng_id_tracker_rcu *p; /* RCU dereferenced. */
+};
+
+struct lttng_id_hash_node {
        struct hlist_node hlist;
-       int pid;
+       int id;
 };
 
 struct lttng_session {
@@ -514,7 +531,12 @@ struct lttng_session {
        unsigned int free_chan_id;      /* Next chan ID to allocate */
        uuid_le uuid;                   /* Trace session unique ID */
        struct lttng_metadata_cache *metadata_cache;
-       struct lttng_pid_tracker *pid_tracker;
+       struct lttng_id_tracker pid_tracker;
+       struct lttng_id_tracker vpid_tracker;
+       struct lttng_id_tracker uid_tracker;
+       struct lttng_id_tracker vuid_tracker;
+       struct lttng_id_tracker gid_tracker;
+       struct lttng_id_tracker vgid_tracker;
        unsigned int metadata_dumped:1,
                tstate:1;               /* Transient enable state */
        /* List of enablers */
@@ -611,17 +633,20 @@ void lttng_probes_exit(void);
 int lttng_metadata_output_channel(struct lttng_metadata_stream *stream,
                struct channel *chan);
 
-int lttng_pid_tracker_get_node_pid(const struct lttng_pid_hash_node *node);
-struct lttng_pid_tracker *lttng_pid_tracker_create(void);
-void lttng_pid_tracker_destroy(struct lttng_pid_tracker *lpf);
-bool lttng_pid_tracker_lookup(struct lttng_pid_tracker *lpf, int pid);
-int lttng_pid_tracker_add(struct lttng_pid_tracker *lpf, int pid);
-int lttng_pid_tracker_del(struct lttng_pid_tracker *lpf, int pid);
+int lttng_id_tracker_get_node_id(const struct lttng_id_hash_node *node);
+int lttng_id_tracker_empty_set(struct lttng_id_tracker *lf);
+void lttng_id_tracker_destroy(struct lttng_id_tracker *lf, bool rcu);
+bool lttng_id_tracker_lookup(struct lttng_id_tracker_rcu *p, int id);
+int lttng_id_tracker_add(struct lttng_id_tracker *lf, int id);
+int lttng_id_tracker_del(struct lttng_id_tracker *lf, int id);
 
-int lttng_session_track_pid(struct lttng_session *session, int pid);
-int lttng_session_untrack_pid(struct lttng_session *session, int pid);
+int lttng_session_track_id(struct lttng_session *session,
+               enum tracker_type tracker_type, int id);
+int lttng_session_untrack_id(struct lttng_session *session,
+               enum tracker_type tracker_type, int id);
 
-int lttng_session_list_tracker_pids(struct lttng_session *session);
+int lttng_session_list_tracker_ids(struct lttng_session *session,
+               enum tracker_type tracker_type);
 
 void lttng_clock_ref(void);
 void lttng_clock_unref(void);
@@ -718,6 +743,97 @@ int lttng_add_migratable_to_ctx(struct lttng_ctx **ctx)
 
 int lttng_add_callstack_to_ctx(struct lttng_ctx **ctx, int type);
 
+#if defined(CONFIG_CGROUPS) && \
+       ((LINUX_VERSION_CODE >= KERNEL_VERSION(4,6,0)) || \
+        LTTNG_UBUNTU_KERNEL_RANGE(4,4,0,0, 4,5,0,0))
+int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx)
+{
+       return -ENOSYS;
+}
+#endif
+
+#if defined(CONFIG_IPC_NS) && \
+       (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
+int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx)
+{
+       return -ENOSYS;
+}
+#endif
+
+#if !defined(LTTNG_MNT_NS_MISSING_HEADER) && \
+       (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
+int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx)
+{
+       return -ENOSYS;
+}
+#endif
+
+#if defined(CONFIG_NET_NS) && \
+       (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
+int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx)
+{
+       return -ENOSYS;
+}
+#endif
+
+#if defined(CONFIG_PID_NS) && \
+       (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
+int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx)
+{
+       return -ENOSYS;
+}
+#endif
+
+#if defined(CONFIG_USER_NS) && \
+       (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
+int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx)
+{
+       return -ENOSYS;
+}
+#endif
+
+#if defined(CONFIG_UTS_NS) && \
+       (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
+int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx)
+{
+       return -ENOSYS;
+}
+#endif
+
+int lttng_add_uid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_euid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_suid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_gid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_egid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_sgid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vuid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_veuid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vsuid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vgid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vegid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vsgid_to_ctx(struct lttng_ctx **ctx);
+
 #if defined(CONFIG_PERF_EVENTS)
 int lttng_add_perf_counter_to_ctx(uint32_t type,
                                  uint64_t config,