#include "ltt-events.h"
#include "ltt-tracer.h"
-#ifndef CHAR_BIT
-#define CHAR_BIT 8
-#endif
-
struct metadata_packet_header {
uint32_t magic; /* 0x75D11D57 */
- uint8_t trace_uuid[16]; /* Unique Universal Identifier */
+ uint8_t uuid[16]; /* Unique Universal Identifier */
uint32_t checksum; /* 0 if unused */
uint32_t content_size; /* in bits */
uint32_t packet_size; /* in bits */
(struct metadata_packet_header *)
lib_ring_buffer_offset_address(&buf->backend,
subbuf_idx * chan->backend.subbuf_size);
+ struct ltt_channel *ltt_chan = channel_get_private(chan);
+ struct ltt_session *session = ltt_chan->session;
header->magic = TSDL_MAGIC_NUMBER;
- /* TODO */
- //header->trace_uuid = ; /* Unique Universal Identifier */
+ memcpy(header->uuid, session->uuid.b, sizeof(session->uuid));
header->checksum = 0; /* 0 if unused */
header->content_size = 0xFFFFFFFF; /* in bits, for debugging */
header->packet_size = 0xFFFFFFFF; /* in bits, for debugging */
unsigned int subbuf_idx, unsigned long data_size)
{
struct channel *chan = buf->backend.chan;
- struct packet_header *header =
- (struct packet_header *)
+ struct metadata_packet_header *header =
+ (struct metadata_packet_header *)
lib_ring_buffer_offset_address(&buf->backend,
subbuf_idx * chan->backend.subbuf_size);
unsigned long records_lost = 0;
struct lib_ring_buffer *ltt_buffer_read_open(struct channel *chan)
{
struct lib_ring_buffer *buf;
- int cpu;
- for_each_channel_cpu(cpu, chan) {
- buf = channel_get_ring_buffer(&client_config, chan, cpu);
- if (!lib_ring_buffer_open_read(buf))
- return buf;
- }
+ buf = channel_get_ring_buffer(&client_config, chan, 0);
+ if (!lib_ring_buffer_open_read(buf))
+ return buf;
return NULL;
}
void ltt_buffer_read_close(struct lib_ring_buffer *buf)
{
lib_ring_buffer_release_read(buf);
-
}
+static
int ltt_event_reserve(struct lib_ring_buffer_ctx *ctx)
{
return lib_ring_buffer_reserve(&client_config, ctx);
}
+static
void ltt_event_commit(struct lib_ring_buffer_ctx *ctx)
{
lib_ring_buffer_commit(&client_config, ctx);
}
+static
void ltt_event_write(struct lib_ring_buffer_ctx *ctx, const void *src,
size_t len)
{
lib_ring_buffer_write(&client_config, ctx, src, len);
}
+static
+size_t ltt_packet_avail_size(struct channel *chan)
+
+{
+ unsigned long o_begin;
+ struct lib_ring_buffer *buf;
+
+ buf = chan->backend.buf; /* Only for global buffer ! */
+ o_begin = v_read(&client_config, &buf->offset);
+ if (subbuf_offset(o_begin, chan) != 0) {
+ return chan->backend.subbuf_size - subbuf_offset(o_begin, chan);
+ } else {
+ return chan->backend.subbuf_size - subbuf_offset(o_begin, chan)
+ - sizeof(struct metadata_packet_header);
+ }
+}
+
+static
+wait_queue_head_t *ltt_get_reader_wait_queue(struct ltt_channel *chan)
+{
+ return &chan->chan->read_wait;
+}
+
static struct ltt_transport ltt_relay_transport = {
.name = "relay-" RING_BUFFER_MODE_TEMPLATE_STRING,
.owner = THIS_MODULE,
.event_reserve = ltt_event_reserve,
.event_commit = ltt_event_commit,
.event_write = ltt_event_write,
+ .packet_avail_size = ltt_packet_avail_size,
+ .get_reader_wait_queue = ltt_get_reader_wait_queue,
},
};