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 */
- records_lost += lib_ring_buffer_get_records_lost_full(&client_config, buf);
+ /*
+ * We do not care about the records lost count, because the metadata
+ * channel waits and retry.
+ */
+ (void) 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);
header->ctx.events_discarded = records_lost;
.tsc_bits = 32,
.alloc = RING_BUFFER_ALLOC_PER_CPU,
- .sync = RING_BUFFER_SYNC_PER_CPU,
+ .sync = RING_BUFFER_SYNC_GLOBAL,
.mode = RING_BUFFER_MODE_TEMPLATE,
.backend = RING_BUFFER_PAGE,
- .output = RING_BUFFER_SPLICE,
+ .output = RING_BUFFER_MMAP,
.oops = RING_BUFFER_OOPS_CONSISTENCY,
- .ipi = RING_BUFFER_IPI_BARRIER,
- .wakeup = RING_BUFFER_WAKEUP_BY_TIMER,
+ .ipi = RING_BUFFER_NO_IPI_BARRIER,
+ .wakeup = RING_BUFFER_WAKEUP_BY_WRITER,
};
static
struct ltt_channel *ltt_chan, void *buf_addr,
size_t subbuf_size, size_t num_subbuf,
unsigned int switch_timer_interval,
- unsigned int read_timer_interval)
+ unsigned int read_timer_interval,
+ int *shm_fd, int *wait_fd,
+ uint64_t *memory_map_size)
{
ltt_chan->handle = channel_create(&client_config, name, ltt_chan, buf_addr,
subbuf_size, num_subbuf, switch_timer_interval,
- read_timer_interval);
- ltt_chan->chan = shmp(handle, handle->chan);
+ read_timer_interval, shm_fd, wait_fd,
+ memory_map_size);
+ if (!ltt_chan->handle)
+ return NULL;
+ ltt_chan->chan = shmp(ltt_chan->handle, ltt_chan->handle->chan);
return ltt_chan;
}
static
void ltt_channel_destroy(struct ltt_channel *ltt_chan)
{
- channel_destroy(ltt_chan->chan, ltt_chan->handle);
+ channel_destroy(ltt_chan->chan, ltt_chan->handle, 0);
}
static
struct lib_ring_buffer *ltt_buffer_read_open(struct channel *chan,
- struct shm_handle *handle)
+ struct shm_handle *handle,
+ int *shm_fd, int *wait_fd,
+ uint64_t *memory_map_size)
{
struct lib_ring_buffer *buf;
int cpu;
for_each_channel_cpu(cpu, chan) {
- buf = channel_get_ring_buffer(&client_config, chan, cpu, handle);
- if (!lib_ring_buffer_open_read(buf, handle))
+ buf = channel_get_ring_buffer(&client_config, chan,
+ cpu, handle, shm_fd, wait_fd,
+ memory_map_size);
+ if (!lib_ring_buffer_open_read(buf, handle, 0))
return buf;
}
return NULL;
void ltt_buffer_read_close(struct lib_ring_buffer *buf,
struct shm_handle *handle)
{
- lib_ring_buffer_release_read(buf, handle);
+ lib_ring_buffer_release_read(buf, handle, 0);
}
static
}
static struct ltt_transport ltt_relay_transport = {
- .name = "relay-" RING_BUFFER_MODE_TEMPLATE_STRING,
+ .name = "relay-" RING_BUFFER_MODE_TEMPLATE_STRING "-mmap",
.ops = {
.channel_create = _channel_create,
.channel_destroy = ltt_channel_destroy,
},
};
-static
-void __attribute__((constructor)) ltt_ring_buffer_client_init(void)
+void RING_BUFFER_MODE_TEMPLATE_INIT(void)
{
- printf("LTT : ltt ring buffer client init\n");
+ DBG("LTT : ltt ring buffer client init\n");
ltt_transport_register(<t_relay_transport);
}
-static
-void __attribute__((destructor)) ltt_ring_buffer_client_exit(void)
+void RING_BUFFER_MODE_TEMPLATE_EXIT(void)
{
- printf("LTT : ltt ring buffer client exit\n");
+ DBG("LTT : ltt ring buffer client exit\n");
ltt_transport_unregister(<t_relay_transport);
}