LTTng : Linux Trace Toolkit Next Generation 0.5.95, kernel 2.6.17

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+/*
+ * linux/include/linux/ltt-facilities.h
+ *
+ * Copyright (C) 2005 Mathieu Desnoyers ([email protected])
+ *
+ * This contains the definitions for the Linux Trace Toolkit facilities.
+ *
+ * Each facility must store its facility index number (returned by the register)
+ * in an exported symbol named :
+ *
+ * ltt_facility_name_checksum
+ *
+ * Where name is the name of the facility, and checksum is the text that
+ * corresponds to the checksum of the facility in hexadecimal notation.
+ */
+
+#ifndef _LTT_FACILITIES_H
+#define _LTT_FACILITIES_H
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <asm/atomic.h>
+#include <linux/types.h>
+
+#define FACNAME_LEN 32
+
+struct user_facility_info {
+	char name[FACNAME_LEN];
+	unsigned int num_events;
+	size_t alignment;
+	u32 checksum;
+	size_t int_size;
+	size_t long_size;
+	size_t pointer_size;
+	size_t size_t_size;
+};
+
+#ifdef __KERNEL__
+
+/* Is kernel tracing enabled */
+#if defined(CONFIG_LTT)
+
+#define LTT_FAC_PER_PROCESS 16
+
+#define LTT_MAX_NUM_FACILITIES	256
+#define LTT_RESERVED_FACILITIES	1
+
+typedef unsigned long ltt_facility_t;
+
+enum ltt_facility_type {
+	LTT_FACILITY_TYPE_KERNEL,
+	LTT_FACILITY_TYPE_USER
+};
+
+struct ltt_facility {
+	const char *name;
+	const unsigned int num_events;
+	const u32 checksum;
+	const char *symbol;
+};
+
+struct ltt_facility_info {
+	char name[FACNAME_LEN];
+	enum ltt_facility_type type;
+	unsigned int num_events;
+	size_t alignment;
+	u32 checksum;
+	size_t int_size;
+	size_t long_size;
+	size_t pointer_size;
+	size_t size_t_size;
+	atomic_t ref;
+};
+
+struct ltt_trace_struct;
+
+void ltt_facility_ref(ltt_facility_t facility_id);
+
+int ltt_facility_unregister(ltt_facility_t facility_id);
+
+
+int ltt_facility_register(enum ltt_facility_type type,
+		const char *name,
+		const unsigned int num_events,
+		u32 checksum,
+		size_t int_size,
+		size_t long_size,
+		size_t pointer_size,
+		size_t size_t_size,
+		size_t alignment);
+
+int ltt_facility_verify(enum ltt_facility_type type,
+		const char *name,
+		const unsigned int num_events,
+		const u32 checksum,
+		size_t int_size,
+		size_t long_size,
+		size_t pointer_size,
+		size_t size_t_size,
+		size_t alignment);
+
+unsigned int ltt_facility_kernel_register(struct ltt_facility *facility);
+
+int ltt_facility_user_access_ok(ltt_facility_t fac_id);
+
+void ltt_facility_free_unused(void);
+
+void ltt_facility_state_dump(struct ltt_trace_struct *trace);
+
+#endif //__KERNEL__
+
+#endif /* defined(CONFIG_LTT) */
+#endif /* _LTT_FACILITIES_H */

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