X-Git-Url: https://git.liburcu.org/?a=blobdiff_plain;f=libust%2Ftracercore.h;fp=libust%2Ftracercore.h;h=e5ff00f78edc8c0aa4264a2d79b1f2ae7398707d;hb=b4512257eb71d0432554047acf6278dc42a15a75;hp=0000000000000000000000000000000000000000;hpb=e70acc91ae21023149204a245638c1d2dffa7265;p=ust.git

diff --git a/libust/tracercore.h b/libust/tracercore.h
new file mode 100644
index 0000000..e5ff00f
--- /dev/null
+++ b/libust/tracercore.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2005,2006 Mathieu Desnoyers (mathieu.desnoyers@polymtl.ca)
+ *
+ * This contains the core definitions for the Linux Trace Toolkit.
+ */
+
+#ifndef LTT_CORE_H
+#define LTT_CORE_H
+
+#include "list.h"
+#include "kernelcompat.h"
+//ust// #include <linux/percpu.h>
+
+/* ltt's root dir in debugfs */
+#define LTT_ROOT        "ltt"
+
+/*
+ * All modifications of ltt_traces must be done by ltt-tracer.c, while holding
+ * the semaphore. Only reading of this information can be done elsewhere, with
+ * the RCU mechanism : the preemption must be disabled while reading the
+ * list.
+ */
+struct ltt_traces {
+	struct list_head setup_head;	/* Pre-allocated traces list */
+	struct list_head head;		/* Allocated Traces list */
+	unsigned int num_active_traces;	/* Number of active traces */
+} ____cacheline_aligned;
+
+extern struct ltt_traces ltt_traces;
+
+/*
+ * get dentry of ltt's root dir
+ */
+struct dentry *get_ltt_root(void);
+
+/* Keep track of trap nesting inside LTT */
+//ust// DECLARE_PER_CPU(unsigned int, ltt_nesting);
+extern unsigned int ltt_nesting;
+
+typedef int (*ltt_run_filter_functor)(void *trace, uint16_t eID);
+//typedef int (*ltt_run_filter_functor)(void *, __u16);
+
+extern ltt_run_filter_functor ltt_run_filter;
+
+extern void ltt_filter_register(ltt_run_filter_functor func);
+extern void ltt_filter_unregister(void);
+
+#if defined(CONFIG_LTT) && defined(CONFIG_LTT_ALIGNMENT)
+
+/*
+ * Calculate the offset needed to align the type.
+ * size_of_type must be non-zero.
+ */
+static inline unsigned int ltt_align(size_t align_drift, size_t size_of_type)
+{
+	size_t alignment = min(sizeof(void *), size_of_type);
+	return (alignment - align_drift) & (alignment - 1);
+}
+/* Default arch alignment */
+#define LTT_ALIGN
+
+static inline int ltt_get_alignment(void)
+{
+	return sizeof(void *);
+}
+
+#else
+
+static inline unsigned int ltt_align(size_t align_drift,
+		 size_t size_of_type)
+{
+	return 0;
+}
+
+#define LTT_ALIGN __attribute__((packed))
+
+static inline int ltt_get_alignment(void)
+{
+	return 0;
+}
+#endif /* defined(CONFIG_LTT) && defined(CONFIG_LTT_ALIGNMENT) */
+
+#endif /* LTT_CORE_H */