Fix syscall exit

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

diff --git a/ltt-events.h b/ltt-events.h
index 94ce295b58cb272f69d9cbe66bb665d99c0eced1..dfab9a5ffe5c8f3d443da293e0db845e3d87d9f9 100644 (file)
--- a/ltt-events.h
+++ b/ltt-events.h
@@ -158,7 +158,7 @@ struct lttng_event_desc {
 };
 
 struct lttng_probe_desc {
-       const struct lttng_event_desc *event_desc;
+       const struct lttng_event_desc **event_desc;
        unsigned int nr_events;
        struct list_head head;                  /* chain registered probes */
 };
@@ -216,7 +216,7 @@ struct ltt_channel_ops {
         * may change due to concurrent writes.
         */
        size_t (*packet_avail_size)(struct channel *chan);
-       wait_queue_head_t *(*get_reader_wait_queue)(struct channel *chan);
+       wait_queue_head_t *(*get_writer_buf_wait_queue)(struct channel *chan, int cpu);
        wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan);
        int (*is_finalized)(struct channel *chan);
        int (*is_disabled)(struct channel *chan);
@@ -241,6 +241,9 @@ struct ltt_channel {
        struct list_head list;          /* Channel list */
        struct ltt_channel_ops *ops;
        struct ltt_transport *transport;
+       struct ltt_event **sc_table;    /* for syscall tracing */
+       struct ltt_event *sc_unknown;   /* for unknown syscalls */
+       struct ltt_event *sc_exit;      /* for syscall exit */
        int header_type;                /* 0: unset, 1: compact, 2: large */
        int metadata_dumped:1;
 };
@@ -277,7 +280,8 @@ struct ltt_channel *ltt_global_channel_create(struct ltt_session *session,
 
 struct ltt_event *ltt_event_create(struct ltt_channel *chan,
                                   struct lttng_kernel_event *event_param,
-                                  void *filter);
+                                  void *filter,
+                                  const struct lttng_event_desc *internal_desc);
 
 int ltt_channel_enable(struct ltt_channel *channel);
 int ltt_channel_disable(struct ltt_channel *channel);
@@ -297,6 +301,22 @@ const struct lttng_event_desc *ltt_event_get(const char *name);
 void ltt_event_put(const struct lttng_event_desc *desc);
 int ltt_probes_init(void);
 void ltt_probes_exit(void);
+
+#ifdef CONFIG_HAVE_SYSCALL_TRACEPOINTS
+int lttng_syscalls_register(struct ltt_channel *chan, void *filter);
+int lttng_syscalls_unregister(struct ltt_channel *chan);
+#else
+static inline int lttng_syscalls_register(struct ltt_channel *chan, void *filter)
+{
+       return -ENOSYS;
+}
+
+static inline int lttng_syscalls_unregister(struct ltt_channel *chan)
+{
+       return 0;
+}
+#endif
+
 struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx);
 int lttng_find_context(struct lttng_ctx *ctx, const char *name);
 void lttng_remove_context_field(struct lttng_ctx **ctx,
@@ -311,7 +331,7 @@ int lttng_add_tid_to_ctx(struct lttng_ctx **ctx);
 int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx);
 int lttng_add_ppid_to_ctx(struct lttng_ctx **ctx);
 int lttng_add_vppid_to_ctx(struct lttng_ctx **ctx);
-#ifdef CONFIG_PERF_EVENTS
+#if defined(CONFIG_PERF_EVENTS) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33))
 int lttng_add_perf_counter_to_ctx(uint32_t type,
                                  uint64_t config,
                                  const char *name,