struct {
struct dentry *trace_root;
} dentry;
- struct kref kref; /* Each channel has a kref of the trace struct */
+ struct urcu_ref urcu_ref; /* Each channel has a urcu_ref of the trace struct */
struct ltt_transport *transport;
- struct kref ltt_transport_kref;
+ struct urcu_ref ltt_transport_urcu_ref;
char trace_name[NAME_MAX];
} ____cacheline_aligned;
header->freq_scale = trace->freq_scale;
}
+#ifndef UST_VALGRIND
+
static __inline__ int ust_get_cpu(void)
{
-#ifndef UST_VALGRIND
- return sched_getcpu();
-#else
- /* Valgrind does not support the sched_getcpu() vsyscall.
+ int cpu;
+
+ cpu = sched_getcpu();
+ if (likely(cpu >= 0))
+ return cpu;
+ /*
+ * If getcpu(2) is not implemented in the Kernel use CPU 0 as fallback.
+ */
+ return 0;
+}
+
+#else /* #else #ifndef UST_VALGRIND */
+
+static __inline__ int ust_get_cpu(void)
+{
+ /*
+ * 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
}
+#endif /* #else #ifndef UST_VALGRIND */
/*
* Size reserved for high priority events (interrupts, NMI, BH) at the end of a
extern void ltt_core_unregister(void);
-extern void ltt_release_trace(struct kref *kref);
-extern void ltt_release_transport(struct kref *kref);
+extern void ltt_release_trace(struct urcu_ref *urcu_ref);
+extern void ltt_release_transport(struct urcu_ref *urcu_ref);
extern void ltt_dump_marker_state(struct ust_trace *trace);