X-Git-Url: https://git.liburcu.org/?a=blobdiff_plain;f=libust%2Ftracer.h;h=dc2d62fffe66b359c70c3d145355bc4af01b1c3d;hb=12e81b07455a1aef2e2bcc73004f14a7b73596fa;hp=cc3974e2a9d45ef0febc077b153ffa7637fe2ad3;hpb=7166e240639cec06f4273f65059300f98b5296f6;p=ust.git

diff --git a/libust/tracer.h b/libust/tracer.h
index cc3974e..dc2d62f 100644
--- a/libust/tracer.h
+++ b/libust/tracer.h
@@ -241,8 +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);
@@ -264,8 +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 *chan,
+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)
@@ -283,7 +281,7 @@ static __inline__ size_t ltt_write_event_header(struct ust_trace *trace,
 	return buf_offset;
 
 slow_path:
-	return ltt_write_event_header_slow(trace, chan, buf, buf_offset,
+	return ltt_write_event_header_slow(chan, buf, buf_offset,
 				eID, event_size, tsc, rflags);
 }
 
@@ -338,6 +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