[PATCH 9/16] LTTng 0.6.36 for 2.6.18 : Core, headers

[Mathieu Desnoyers]

LTTng core, headers.

patch09-2.6.18-lttng-core-0.6.36-core-header.diff

Signed-off-by : Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx>

--BEGIN--
--- /dev/null
+++ b/include/linux/ltt-core.h
@@ -0,0 +1,33 @@
+/*
+ * linux/include/linux/ltt-core.h
+ *
+ * Copyright (C) 2005,2006 Mathieu Desnoyers (mathieu.desnoyers@xxxxxxxxxx)
+ *
+ * This contains the core definitions for the Linux Trace Toolkit.
+ */
+
+#ifndef LTT_CORE_H
+#define LTT_CORE_H
+
+#include <linux/list.h>
+
+#ifdef CONFIG_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 head;		/* Traces list */
+	unsigned int num_active_traces;	/* Number of active traces */
+} ____cacheline_aligned;
+
+extern struct ltt_traces ltt_traces;
+
+
+/* Keep track of traps nesting inside LTT */
+extern volatile unsigned int ltt_nesting[];
+
+#endif //CONFIG_LTT
+
+#endif //LTT_CORE_H
--END--

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