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Date: Fri, 24 Nov 2006 16:59:47 -0500
From: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
To: linux-kernel@vger.kernel.org, Christoph Hellwig <hch@infradead.org>,
       Andrew Morton <akpm@osdl.org>, Ingo Molnar <mingo@redhat.com>,
       Greg Kroah-Hartman <gregkh@suse.de>,
       Thomas Gleixner <tglx@linutronix.de>, Tom Zanussi <zanussi@us.ibm.com>,
       Karim Yaghmour <karim@opersys.com>, Paul Mundt <lethal@linux-sh.org>,
       Jes Sorensen <jes@sgi.com>, Richard J Moore <richardj_moore@uk.ibm.com>,
       "Martin J. Bligh" <mbligh@mbligh.org>,
       Michel Dagenais <michel.dagenais@polymtl.ca>,
       Douglas Niehaus <niehaus@eecs.ku.edu>, ltt-dev@shafik.org,
       systemtap@sources.redhat.com
Subject: [PATCH 9/16] LTTng 0.6.36 for 2.6.18 : Core, headers
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LTTng core, headers.

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

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

--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@polymtl.ca)
+ *
+ * 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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