#include <asm/atomic.h>
#include <asm/local.h>
-#include "trace-clock.h"
+#include "wrapper/trace-clock.h"
#include "ltt-tracer-core.h"
#include "ltt-events.h"
uint8_t header_end[0]; /* End of header */
};
-static inline notrace u64 lib_ring_buffer_clock_read(struct channel *chan)
-{
- return trace_clock_read64();
-}
-
-/*
- * record_header_size - Calculate the header size and padding necessary.
- * @config: ring buffer instance configuration
- * @chan: channel
- * @offset: offset in the write buffer
- * @data_size: size of the payload
- * @pre_header_padding: padding to add before the header (output)
- * @rflags: reservation flags
- * @ctx: reservation context
- *
- * Returns the event header size (including padding).
- *
- * Important note :
- * The event header must be 32-bits. The total offset calculated here :
- *
- * Alignment of header struct on 32 bits (min arch size, header size)
- * + sizeof(header struct) (32-bits)
- * + (opt) u16 (ext. event id)
- * + (opt) u16 (event_size)
- * (if event_size == LTT_MAX_SMALL_SIZE, has ext. event size)
- * + (opt) u32 (ext. event size)
- * + (opt) u64 full TSC (aligned on min(64-bits, arch size))
- *
- * The payload must itself determine its own alignment from the biggest type it
- * contains.
- */
-static __inline__
-unsigned char record_header_size(const struct lib_ring_buffer_config *config,
- struct channel *chan, size_t offset,
- size_t data_size, size_t *pre_header_padding,
- unsigned int rflags,
- struct lib_ring_buffer_ctx *ctx)
-{
- size_t orig_offset = offset;
- size_t padding;
-
- BUILD_BUG_ON(sizeof(struct event_header) != sizeof(u32));
-
- padding = lib_ring_buffer_align(offset,
- sizeof(struct event_header));
- offset += padding;
- offset += sizeof(struct event_header);
-
- if (unlikely(rflags)) {
- switch (rflags) {
- case LTT_RFLAG_ID_SIZE_TSC:
- offset += sizeof(u16) + sizeof(u16);
- if (data_size >= LTT_MAX_SMALL_SIZE)
- offset += sizeof(u32);
- offset += lib_ring_buffer_align(offset, sizeof(u64));
- offset += sizeof(u64);
- break;
- case LTT_RFLAG_ID_SIZE:
- offset += sizeof(u16) + sizeof(u16);
- if (data_size >= LTT_MAX_SMALL_SIZE)
- offset += sizeof(u32);
- break;
- case LTT_RFLAG_ID:
- offset += sizeof(u16);
- break;
- }
- }
-
- *pre_header_padding = padding;
- return offset - orig_offset;
-}
-
-#include <linux/ringbuffer/api.h>
-
-extern
-void ltt_write_event_header_slow(const struct lib_ring_buffer_config *config,
- struct lib_ring_buffer_ctx *ctx,
- u16 eID, u32 event_size);
-
-/*
- * ltt_write_event_header
- *
- * Writes the event header to the offset (already aligned on 32-bits).
- *
- * @config: ring buffer instance configuration
- * @ctx: reservation context
- * @eID : event ID
- * @event_size : size of the event, excluding the event header.
- */
-static __inline__
-void ltt_write_event_header(const struct lib_ring_buffer_config *config,
- struct lib_ring_buffer_ctx *ctx,
- u16 eID, u32 event_size)
-{
- struct event_header header;
-
- if (unlikely(ctx->rflags))
- goto slow_path;
-
- header.id_time = eID << LTT_TSC_BITS;
- header.id_time |= (u32)ctx->tsc & LTT_TSC_MASK;
- lib_ring_buffer_write(config, ctx, &header, sizeof(header));
-
-slow_path:
- ltt_write_event_header_slow(config, ctx, eID, event_size);
-}
-
/* Tracer properties */
#define CTF_MAGIC_NUMBER 0xC1FC1FC1
+#define TSDL_MAGIC_NUMBER 0x75D11D57
#define LTT_TRACER_VERSION_MAJOR 3
#define LTT_TRACER_VERSION_MINOR 0
-/**
- * ltt_write_trace_header - Write trace header
- * @priv: Private data (struct trace)
- * @header: Memory address where the information must be written to
- */
-static __inline__
-void write_trace_header(const struct lib_ring_buffer_config *config,
- struct packet_header *header)
-{
- header->magic = CTF_MAGIC_NUMBER;
-#if 0
- /* TODO: move start time to metadata */
- header->major_version = LTT_TRACER_VERSION_MAJOR;
- header->minor_version = LTT_TRACER_VERSION_MINOR;
- header->arch_size = sizeof(void *);
- header->alignment = lib_ring_buffer_get_alignment(config);
- header->start_time_sec = ltt_chan->session->start_time.tv_sec;
- header->start_time_usec = ltt_chan->session->start_time.tv_usec;
- header->start_freq = ltt_chan->session->start_freq;
- header->freq_scale = ltt_chan->session->freq_scale;
-#endif //0
-}
-
/*
* Size reserved for high priority events (interrupts, NMI, BH) at the end of a
* nearly full buffer. User space won't use this last amount of space when in