/* Stream packet context */
uint64_t timestamp_begin; /* Cycle count at subbuffer start */
uint64_t timestamp_end; /* Cycle count at subbuffer end */
+ uint64_t content_size; /* Size of data in subbuffer */
+ uint64_t packet_size; /* Subbuffer size (include padding) */
unsigned long events_discarded; /*
* Events lost in this subbuffer since
* the beginning of the trace.
* (may overflow)
*/
- uint32_t content_size; /* Size of data in subbuffer */
- uint32_t packet_size; /* Subbuffer size (include padding) */
uint32_t cpu_id; /* CPU id associated with stream */
uint8_t header_end; /* End of header */
} ctx;
header->stream_id = lttng_chan->id;
header->ctx.timestamp_begin = tsc;
header->ctx.timestamp_end = 0;
+ header->ctx.content_size = ~0ULL; /* for debugging */
+ header->ctx.packet_size = ~0ULL;
header->ctx.events_discarded = 0;
- header->ctx.content_size = 0xFFFFFFFF; /* for debugging */
- header->ctx.packet_size = 0xFFFFFFFF;
header->ctx.cpu_id = buf->backend.cpu;
}
unsigned long records_lost = 0;
header->ctx.timestamp_end = tsc;
- header->ctx.content_size = data_size * CHAR_BIT; /* in bits */
- header->ctx.packet_size = PAGE_ALIGN(data_size) * CHAR_BIT; /* in bits */
+ header->ctx.content_size =
+ (uint64_t) data_size * CHAR_BIT; /* in bits */
+ header->ctx.packet_size =
+ (uint64_t) PAGE_ALIGN(data_size) * CHAR_BIT; /* in bits */
records_lost += lib_ring_buffer_get_records_lost_full(&client_config, buf);
records_lost += lib_ring_buffer_get_records_lost_wrap(&client_config, buf);
records_lost += lib_ring_buffer_get_records_lost_big(&client_config, buf);
{
}
+static struct packet_header *client_packet_header(
+ const struct lib_ring_buffer_config *config,
+ struct lib_ring_buffer *buf)
+{
+ return lib_ring_buffer_read_offset_address(&buf->backend, 0);
+}
+
+static int client_timestamp_begin(const struct lib_ring_buffer_config *config,
+ struct lib_ring_buffer *buf,
+ uint64_t *timestamp_begin)
+{
+ struct packet_header *header = client_packet_header(config, buf);
+ *timestamp_begin = header->ctx.timestamp_begin;
+
+ return 0;
+}
+
+static int client_timestamp_end(const struct lib_ring_buffer_config *config,
+ struct lib_ring_buffer *buf,
+ uint64_t *timestamp_end)
+{
+ struct packet_header *header = client_packet_header(config, buf);
+ *timestamp_end = header->ctx.timestamp_end;
+
+ return 0;
+}
+
+static int client_events_discarded(const struct lib_ring_buffer_config *config,
+ struct lib_ring_buffer *buf,
+ uint64_t *events_discarded)
+{
+ struct packet_header *header = client_packet_header(config, buf);
+ *events_discarded = header->ctx.events_discarded;
+
+ return 0;
+}
+
+static int client_content_size(const struct lib_ring_buffer_config *config,
+ struct lib_ring_buffer *buf,
+ uint64_t *content_size)
+{
+ struct packet_header *header = client_packet_header(config, buf);
+ *content_size = header->ctx.content_size;
+
+ return 0;
+}
+
+static int client_packet_size(const struct lib_ring_buffer_config *config,
+ struct lib_ring_buffer *buf,
+ uint64_t *packet_size)
+{
+ struct packet_header *header = client_packet_header(config, buf);
+ *packet_size = header->ctx.packet_size;
+
+ return 0;
+}
+
+static int client_stream_id(const struct lib_ring_buffer_config *config,
+ struct lib_ring_buffer *buf,
+ uint64_t *stream_id)
+{
+ struct packet_header *header = client_packet_header(config, buf);
+ *stream_id = header->stream_id;
+
+ return 0;
+}
+
+static int client_current_timestamp(const struct lib_ring_buffer_config *config,
+ struct lib_ring_buffer *bufb,
+ uint64_t *ts)
+{
+ *ts = config->cb.ring_buffer_clock_read(bufb->backend.chan);
+
+ return 0;
+}
+
static const struct lib_ring_buffer_config client_config = {
.cb.ring_buffer_clock_read = client_ring_buffer_clock_read,
.cb.record_header_size = client_record_header_size,
unsigned int switch_timer_interval,
unsigned int read_timer_interval)
{
+ lttng_chan->ops->timestamp_begin = client_timestamp_begin;
+ lttng_chan->ops->timestamp_end = client_timestamp_end;
+ lttng_chan->ops->events_discarded = client_events_discarded;
+ lttng_chan->ops->content_size = client_content_size;
+ lttng_chan->ops->packet_size = client_packet_size;
+ lttng_chan->ops->stream_id = client_stream_id;
+ lttng_chan->ops->current_timestamp = client_current_timestamp;
+
return channel_create(&client_config, name, lttng_chan, buf_addr,
subbuf_size, num_subbuf, switch_timer_interval,
read_timer_interval);
void lttng_event_write_from_user(struct lib_ring_buffer_ctx *ctx,
const void __user *src, size_t len)
{
- lib_ring_buffer_copy_from_user(&client_config, ctx, src, len);
+ lib_ring_buffer_copy_from_user_inatomic(&client_config, ctx, src, len);
}
static