X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=libust%2Ftracer.h;h=dc2d62fffe66b359c70c3d145355bc4af01b1c3d;hb=12e81b07455a1aef2e2bcc73004f14a7b73596fa;hp=431a77c67f00fdb85bdf44238bcf48fd44cd73bd;hpb=7ab550044c6f0f202c2c0b35f869bfd4afd7efbc;p=ust.git

diff --git a/libust/tracer.h b/libust/tracer.h
index 431a77c..dc2d62f 100644
--- a/libust/tracer.h
+++ b/libust/tracer.h
@@ -32,6 +32,7 @@
 #include "tracerconst.h"
 #include <ust/marker.h>
 #include <ust/probe.h>
+#include "buffers.h"
 
 /* Number of bytes to log with a read/write event */
 #define LTT_LOG_RW_SIZE			32L
@@ -213,8 +214,8 @@ struct ltt_subbuffer_header {
 					 * used all along the trace.
 					 */
 	uint32_t freq_scale;		/* Frequency scaling (divisor) */
-	uint32_t lost_size;		/* Size unused at end of subbuffer */
-	uint32_t buf_size;		/* Size of this subbuffer */
+	uint32_t data_size;		/* Size of data in subbuffer */
+	uint32_t sb_size;		/* Subbuffer size (including padding) */
 	uint32_t events_lost;		/*
 					 * Events lost in this subbuffer since
 					 * the beginning of the trace.
@@ -240,8 +241,7 @@ static __inline__ size_t ltt_subbuffer_header_size(void)
 	return offsetof(struct ltt_subbuffer_header, header_end);
 }
 
-extern size_t ltt_write_event_header_slow(struct ust_trace *trace,
-               struct ust_channel *channel,
+extern size_t ltt_write_event_header_slow(struct ust_channel *channel,
                struct ust_buffer *buf, long buf_offset,
                u16 eID, u32 event_size,
                u64 tsc, unsigned int rflags);
@@ -263,8 +263,7 @@ extern size_t ltt_write_event_header_slow(struct ust_trace *trace,
  *
  * returns : offset where the event data must be written.
  */
-static __inline__ size_t ltt_write_event_header(struct ust_trace *trace,
-		struct ust_channel *channel,
+static __inline__ size_t ltt_write_event_header(struct ust_channel *chan,
 		struct ust_buffer *buf, long buf_offset,
 		u16 eID, u32 event_size,
 		u64 tsc, unsigned int rflags)
@@ -275,11 +274,14 @@ static __inline__ size_t ltt_write_event_header(struct ust_trace *trace,
 		goto slow_path;
 
 	header.id_time = eID << LTT_TSC_BITS;
+	header.id_time |= (u32)tsc & LTT_TSC_MASK;
+	ust_buffers_write(buf, buf_offset, &header, sizeof(header));
+	buf_offset += sizeof(header);
 
 	return buf_offset;
 
 slow_path:
-	return ltt_write_event_header_slow(trace, channel, buf, buf_offset,
+	return ltt_write_event_header_slow(chan, buf, buf_offset,
 				eID, event_size, tsc, rflags);
 }
 
@@ -313,7 +315,7 @@ slow_path:
 #define LTT_DEFAULT_N_SUBBUFS_HIGH	2
 #define LTT_TRACER_MAGIC_NUMBER		0x00D6B7ED
 #define LTT_TRACER_VERSION_MAJOR	2
-#define LTT_TRACER_VERSION_MINOR	4
+#define LTT_TRACER_VERSION_MINOR	6
 
 /**
  * ust_write_trace_header - Write trace header
@@ -334,6 +336,21 @@ static __inline__ void ltt_write_trace_header(struct ust_trace *trace,
 	header->freq_scale = trace->freq_scale;
 }
 
+static __inline__ int ust_get_cpu(void)
+{
+#ifndef UST_VALGRIND
+	return sched_getcpu();
+#else
+	/* Valgrind does not support the sched_getcpu() vsyscall.
+	 * It causes it to detect a segfault in the program and stop it.
+	 * So if we want to check libust with valgrind, we have to refrain
+	 * from using this call. TODO: it would probably be better to return
+	 * other values too, to better test it.
+	 */
+	return 0;
+#endif
+}
+
 
 /*
  * Size reserved for high priority events (interrupts, NMI, BH) at the end of a
@@ -381,7 +398,7 @@ extern int ltt_trace_set_channel_enable(const char *trace_name,
 extern int ltt_trace_set_channel_overwrite(const char *trace_name,
 		const char *channel_name, unsigned int overwrite);
 extern int ltt_trace_alloc(const char *trace_name);
-extern int ltt_trace_destroy(const char *trace_name);
+extern int ltt_trace_destroy(const char *trace_name, int drop);
 extern int ltt_trace_start(const char *trace_name);
 extern int ltt_trace_stop(const char *trace_name);