#include <ringbuffer/frontend_types.h>
#define LTTNG_COMPACT_EVENT_BITS 5
-#define LTTNG_COMPACT_TSC_BITS 27
+#define LTTNG_COMPACT_TIMESTAMP_BITS 27
static struct lttng_transport lttng_relay_transport;
* contains.
*/
static __inline__
-size_t record_header_size(const struct lib_ring_buffer_config *config,
+size_t record_header_size(const struct lttng_kernel_ring_buffer_config *config,
struct lttng_kernel_ring_buffer_channel *chan, size_t offset,
size_t *pre_header_padding,
struct lttng_kernel_ring_buffer_ctx *ctx,
case 1: /* compact */
padding = lib_ring_buffer_align(offset, lttng_alignof(uint32_t));
offset += padding;
- if (!(ctx->priv.rflags & (RING_BUFFER_RFLAG_FULL_TSC | LTTNG_RFLAG_EXTENDED))) {
+ if (!(ctx->priv.rflags & (RING_BUFFER_RFLAG_FULL_TIMESTAMP | LTTNG_RFLAG_EXTENDED))) {
offset += sizeof(uint32_t); /* id and timestamp */
} else {
/* Minimum space taken by LTTNG_COMPACT_EVENT_BITS id */
padding = lib_ring_buffer_align(offset, lttng_alignof(uint16_t));
offset += padding;
offset += sizeof(uint16_t);
- if (!(ctx->priv.rflags & (RING_BUFFER_RFLAG_FULL_TSC | LTTNG_RFLAG_EXTENDED))) {
+ if (!(ctx->priv.rflags & (RING_BUFFER_RFLAG_FULL_TIMESTAMP | LTTNG_RFLAG_EXTENDED))) {
offset += lib_ring_buffer_align(offset, lttng_alignof(uint32_t));
offset += sizeof(uint32_t); /* timestamp */
} else {
#include <ringbuffer/api.h>
static
-void lttng_write_event_header_slow(const struct lib_ring_buffer_config *config,
+void lttng_write_event_header_slow(const struct lttng_kernel_ring_buffer_config *config,
struct lttng_kernel_ring_buffer_ctx *ctx,
uint32_t event_id);
* @event_id: event ID
*/
static __inline__
-void lttng_write_event_header(const struct lib_ring_buffer_config *config,
+void lttng_write_event_header(const struct lttng_kernel_ring_buffer_config *config,
struct lttng_kernel_ring_buffer_ctx *ctx,
uint32_t event_id)
{
event_id);
bt_bitfield_write(&id_time, uint32_t,
LTTNG_COMPACT_EVENT_BITS,
- LTTNG_COMPACT_TSC_BITS,
- ctx->priv.tsc);
+ LTTNG_COMPACT_TIMESTAMP_BITS,
+ ctx->priv.timestamp);
lib_ring_buffer_write(config, ctx, &id_time, sizeof(id_time));
break;
}
case 2: /* large */
{
- uint32_t timestamp = (uint32_t) ctx->priv.tsc;
+ uint32_t timestamp = (uint32_t) ctx->priv.timestamp;
uint16_t id = event_id;
lib_ring_buffer_write(config, ctx, &id, sizeof(id));
}
static
-void lttng_write_event_header_slow(const struct lib_ring_buffer_config *config,
+void lttng_write_event_header_slow(const struct lttng_kernel_ring_buffer_config *config,
struct lttng_kernel_ring_buffer_ctx *ctx,
uint32_t event_id)
{
switch (lttng_chan->priv->header_type) {
case 1: /* compact */
- if (!(ctx->priv.rflags & (RING_BUFFER_RFLAG_FULL_TSC | LTTNG_RFLAG_EXTENDED))) {
+ if (!(ctx->priv.rflags & (RING_BUFFER_RFLAG_FULL_TIMESTAMP | LTTNG_RFLAG_EXTENDED))) {
uint32_t id_time = 0;
bt_bitfield_write(&id_time, uint32_t,
event_id);
bt_bitfield_write(&id_time, uint32_t,
LTTNG_COMPACT_EVENT_BITS,
- LTTNG_COMPACT_TSC_BITS, ctx->priv.tsc);
+ LTTNG_COMPACT_TIMESTAMP_BITS, ctx->priv.timestamp);
lib_ring_buffer_write(config, ctx, &id_time, sizeof(id_time));
} else {
uint8_t id = 0;
- uint64_t timestamp = ctx->priv.tsc;
+ uint64_t timestamp = ctx->priv.timestamp;
bt_bitfield_write(&id, uint8_t,
0,
break;
case 2: /* large */
{
- if (!(ctx->priv.rflags & (RING_BUFFER_RFLAG_FULL_TSC | LTTNG_RFLAG_EXTENDED))) {
- uint32_t timestamp = (uint32_t) ctx->priv.tsc;
+ if (!(ctx->priv.rflags & (RING_BUFFER_RFLAG_FULL_TIMESTAMP | LTTNG_RFLAG_EXTENDED))) {
+ uint32_t timestamp = (uint32_t) ctx->priv.timestamp;
uint16_t id = event_id;
lib_ring_buffer_write(config, ctx, &id, sizeof(id));
lib_ring_buffer_write(config, ctx, ×tamp, sizeof(timestamp));
} else {
uint16_t id = 65535;
- uint64_t timestamp = ctx->priv.tsc;
+ uint64_t timestamp = ctx->priv.timestamp;
lib_ring_buffer_write(config, ctx, &id, sizeof(id));
/* Align extended struct on largest member */
lib_ring_buffer_align_ctx(ctx, ctx->largest_align);
}
-static const struct lib_ring_buffer_config client_config;
+static const struct lttng_kernel_ring_buffer_config client_config;
static u64 client_ring_buffer_clock_read(struct lttng_kernel_ring_buffer_channel *chan)
{
}
static
-size_t client_record_header_size(const struct lib_ring_buffer_config *config,
+size_t client_record_header_size(const struct lttng_kernel_ring_buffer_config *config,
struct lttng_kernel_ring_buffer_channel *chan, size_t offset,
size_t *pre_header_padding,
struct lttng_kernel_ring_buffer_ctx *ctx,
return offsetof(struct packet_header, ctx.header_end);
}
-static void client_buffer_begin(struct lib_ring_buffer *buf, u64 tsc,
+static void client_buffer_begin(struct lttng_kernel_ring_buffer *buf, u64 timestamp,
unsigned int subbuf_idx)
{
struct lttng_kernel_ring_buffer_channel *chan = buf->backend.chan;
memcpy(header->uuid, session->priv->uuid.b, sizeof(session->priv->uuid));
header->stream_id = lttng_chan->priv->id;
header->stream_instance_id = buf->backend.cpu;
- header->ctx.timestamp_begin = tsc;
+ header->ctx.timestamp_begin = timestamp;
header->ctx.timestamp_end = 0;
header->ctx.content_size = ~0ULL; /* for debugging */
header->ctx.packet_size = ~0ULL;
* offset is assumed to never be 0 here : never deliver a completely empty
* subbuffer. data_size is between 1 and subbuf_size.
*/
-static void client_buffer_end(struct lib_ring_buffer *buf, u64 tsc,
- unsigned int subbuf_idx, unsigned long data_size)
+static void client_buffer_end(struct lttng_kernel_ring_buffer *buf, u64 timestamp,
+ unsigned int subbuf_idx, unsigned long data_size,
+ const struct lttng_kernel_ring_buffer_ctx *ctx)
{
struct lttng_kernel_ring_buffer_channel *chan = buf->backend.chan;
struct packet_header *header =
subbuf_idx * chan->backend.subbuf_size);
unsigned long records_lost = 0;
- header->ctx.timestamp_end = tsc;
+ header->ctx.timestamp_end = timestamp;
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);
+ records_lost += lib_ring_buffer_get_records_lost_full(&client_config, ctx);
+ records_lost += lib_ring_buffer_get_records_lost_wrap(&client_config, ctx);
+ records_lost += lib_ring_buffer_get_records_lost_big(&client_config, ctx);
header->ctx.events_discarded = records_lost;
}
-static int client_buffer_create(struct lib_ring_buffer *buf, void *priv,
+static int client_buffer_create(struct lttng_kernel_ring_buffer *buf, void *priv,
int cpu, const char *name)
{
return 0;
}
-static void client_buffer_finalize(struct lib_ring_buffer *buf, void *priv, int cpu)
+static void client_buffer_finalize(struct lttng_kernel_ring_buffer *buf, void *priv, int cpu)
{
}
static struct packet_header *client_packet_header(
- const struct lib_ring_buffer_config *config,
- struct lib_ring_buffer *buf)
+ const struct lttng_kernel_ring_buffer_config *config,
+ struct lttng_kernel_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,
+static int client_timestamp_begin(const struct lttng_kernel_ring_buffer_config *config,
+ struct lttng_kernel_ring_buffer *buf,
uint64_t *timestamp_begin)
{
struct packet_header *header = client_packet_header(config, buf);
return 0;
}
-static int client_timestamp_end(const struct lib_ring_buffer_config *config,
- struct lib_ring_buffer *buf,
+static int client_timestamp_end(const struct lttng_kernel_ring_buffer_config *config,
+ struct lttng_kernel_ring_buffer *buf,
uint64_t *timestamp_end)
{
struct packet_header *header = client_packet_header(config, buf);
return 0;
}
-static int client_events_discarded(const struct lib_ring_buffer_config *config,
- struct lib_ring_buffer *buf,
+static int client_events_discarded(const struct lttng_kernel_ring_buffer_config *config,
+ struct lttng_kernel_ring_buffer *buf,
uint64_t *events_discarded)
{
struct packet_header *header = client_packet_header(config, buf);
return 0;
}
-static int client_content_size(const struct lib_ring_buffer_config *config,
- struct lib_ring_buffer *buf,
+static int client_content_size(const struct lttng_kernel_ring_buffer_config *config,
+ struct lttng_kernel_ring_buffer *buf,
uint64_t *content_size)
{
struct packet_header *header = client_packet_header(config, buf);
return 0;
}
-static int client_packet_size(const struct lib_ring_buffer_config *config,
- struct lib_ring_buffer *buf,
+static int client_packet_size(const struct lttng_kernel_ring_buffer_config *config,
+ struct lttng_kernel_ring_buffer *buf,
uint64_t *packet_size)
{
struct packet_header *header = client_packet_header(config, buf);
return 0;
}
-static int client_stream_id(const struct lib_ring_buffer_config *config,
- struct lib_ring_buffer *buf,
+static int client_stream_id(const struct lttng_kernel_ring_buffer_config *config,
+ struct lttng_kernel_ring_buffer *buf,
uint64_t *stream_id)
{
struct lttng_kernel_ring_buffer_channel *chan = buf->backend.chan;
return 0;
}
-static int client_current_timestamp(const struct lib_ring_buffer_config *config,
- struct lib_ring_buffer *bufb,
+static int client_current_timestamp(const struct lttng_kernel_ring_buffer_config *config,
+ struct lttng_kernel_ring_buffer *bufb,
uint64_t *ts)
{
*ts = config->cb.ring_buffer_clock_read(bufb->backend.chan);
return 0;
}
-static int client_sequence_number(const struct lib_ring_buffer_config *config,
- struct lib_ring_buffer *buf,
+static int client_sequence_number(const struct lttng_kernel_ring_buffer_config *config,
+ struct lttng_kernel_ring_buffer *buf,
uint64_t *seq)
{
struct packet_header *header = client_packet_header(config, buf);
}
static
-int client_instance_id(const struct lib_ring_buffer_config *config,
- struct lib_ring_buffer *buf,
+int client_instance_id(const struct lttng_kernel_ring_buffer_config *config,
+ struct lttng_kernel_ring_buffer *buf,
uint64_t *id)
{
*id = buf->backend.cpu;
return 0;
}
-static const struct lib_ring_buffer_config client_config = {
+static const struct lttng_kernel_ring_buffer_config client_config = {
.cb.ring_buffer_clock_read = client_ring_buffer_clock_read,
.cb.record_header_size = client_record_header_size,
.cb.subbuffer_header_size = client_packet_header_size,
.cb.buffer_create = client_buffer_create,
.cb.buffer_finalize = client_buffer_finalize,
- .tsc_bits = LTTNG_COMPACT_TSC_BITS,
+ .timestamp_bits = LTTNG_COMPACT_TIMESTAMP_BITS,
.alloc = RING_BUFFER_ALLOC_PER_CPU,
.sync = RING_BUFFER_SYNC_PER_CPU,
.mode = RING_BUFFER_MODE_TEMPLATE,
}
static
-struct lib_ring_buffer *lttng_buffer_read_open(struct lttng_kernel_ring_buffer_channel *chan)
+struct lttng_kernel_ring_buffer *lttng_buffer_read_open(struct lttng_kernel_ring_buffer_channel *chan)
{
- struct lib_ring_buffer *buf;
+ struct lttng_kernel_ring_buffer *buf;
int cpu;
for_each_channel_cpu(cpu, chan) {
static
int lttng_buffer_has_read_closed_stream(struct lttng_kernel_ring_buffer_channel *chan)
{
- struct lib_ring_buffer *buf;
+ struct lttng_kernel_ring_buffer *buf;
int cpu;
for_each_channel_cpu(cpu, chan) {
}
static
-void lttng_buffer_read_close(struct lib_ring_buffer *buf)
+void lttng_buffer_read_close(struct lttng_kernel_ring_buffer *buf)
{
lib_ring_buffer_release_read(buf);
}
static
void lttng_event_write(struct lttng_kernel_ring_buffer_ctx *ctx, const void *src,
- size_t len)
+ size_t len, size_t alignment)
{
+ lib_ring_buffer_align_ctx(ctx, alignment);
lib_ring_buffer_write(&client_config, ctx, src, len);
}
static
void lttng_event_write_from_user(struct lttng_kernel_ring_buffer_ctx *ctx,
- const void __user *src, size_t len)
+ const void __user *src, size_t len, size_t alignment)
{
+ lib_ring_buffer_align_ctx(ctx, alignment);
lib_ring_buffer_copy_from_user_inatomic(&client_config, ctx, src, len);
}
len, '#');
}
+static
+void lttng_event_pstrcpy_pad(struct lttng_kernel_ring_buffer_ctx *ctx, const char *src,
+ size_t len)
+{
+ lib_ring_buffer_pstrcpy(&client_config, ctx, src, len, '\0');
+}
+
+static
+void lttng_event_pstrcpy_pad_from_user(struct lttng_kernel_ring_buffer_ctx *ctx, const char __user *src,
+ size_t len)
+{
+ lib_ring_buffer_pstrcpy_from_user_inatomic(&client_config, ctx, src, len, '\0');
+}
+
static
void lttng_channel_buffer_lost_event_too_big(struct lttng_kernel_channel_buffer *lttng_chan)
{
static
wait_queue_head_t *lttng_get_writer_buf_wait_queue(struct lttng_kernel_ring_buffer_channel *chan, int cpu)
{
- struct lib_ring_buffer *buf = channel_get_ring_buffer(&client_config,
+ struct lttng_kernel_ring_buffer *buf = channel_get_ring_buffer(&client_config,
chan, cpu);
return &buf->write_wait;
}
.event_memset = lttng_event_memset,
.event_strcpy = lttng_event_strcpy,
.event_strcpy_from_user = lttng_event_strcpy_from_user,
+ .event_pstrcpy_pad = lttng_event_pstrcpy_pad,
+ .event_pstrcpy_pad_from_user = lttng_event_pstrcpy_pad_from_user,
.lost_event_too_big = lttng_channel_buffer_lost_event_too_big,
},
};
projects / lttng-modules.git / blobdiff