#define LTTNG_COMPACT_EVENT_BITS 5
#define LTTNG_COMPACT_TSC_BITS 27
+static struct lttng_transport lttng_relay_transport;
+
/*
* Keep the natural field alignment for _each field_ within this structure if
* you ever add/remove a field from this header. Packed attribute is not used
.wakeup = RING_BUFFER_WAKEUP_BY_TIMER,
};
+static
+void release_priv_ops(void *priv_ops)
+{
+ module_put(THIS_MODULE);
+}
+
+static
+void lttng_channel_destroy(struct channel *chan)
+{
+ channel_destroy(chan);
+}
+
static
struct channel *_channel_create(const char *name,
struct lttng_channel *lttng_chan, void *buf_addr,
unsigned int switch_timer_interval,
unsigned int read_timer_interval)
{
- return channel_create(&client_config, name, lttng_chan, buf_addr,
+ struct channel *chan;
+
+ chan = channel_create(&client_config, name, lttng_chan, buf_addr,
subbuf_size, num_subbuf, switch_timer_interval,
read_timer_interval);
-}
+ if (chan) {
+ /*
+ * Ensure this module is not unloaded before we finish
+ * using lttng_relay_transport.ops.
+ */
+ if (!try_module_get(THIS_MODULE)) {
+ printk(KERN_WARNING "LTT : Can't lock transport module.\n");
+ goto error;
+ }
+ chan->backend.priv_ops = <tng_relay_transport.ops;
+ chan->backend.release_priv_ops = release_priv_ops;
+ }
+ return chan;
-static
-void lttng_channel_destroy(struct channel *chan)
-{
- channel_destroy(chan);
+error:
+ lttng_channel_destroy(chan);
+ return NULL;
}
static
lib_ring_buffer_memset(&client_config, ctx, c, len);
}
+static
+void lttng_event_strcpy(struct lib_ring_buffer_ctx *ctx, const char *src,
+ size_t len)
+{
+ lib_ring_buffer_strcpy(&client_config, ctx, src, len, '#');
+}
+
+static
+void lttng_event_strcpy_from_user(struct lib_ring_buffer_ctx *ctx,
+ const char __user *src, size_t len)
+{
+ lib_ring_buffer_strcpy_from_user_inatomic(&client_config, ctx, src,
+ len, '#');
+}
+
static
wait_queue_head_t *lttng_get_writer_buf_wait_queue(struct channel *chan, int cpu)
{
.event_write = lttng_event_write,
.event_write_from_user = lttng_event_write_from_user,
.event_memset = lttng_event_memset,
+ .event_strcpy = lttng_event_strcpy,
+ .event_strcpy_from_user = lttng_event_strcpy_from_user,
.packet_avail_size = NULL, /* Would be racy anyway */
.get_writer_buf_wait_queue = lttng_get_writer_buf_wait_queue,
.get_hp_wait_queue = lttng_get_hp_wait_queue,