* Copyright 2010 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
* LTTng debugfs ABI header
+ *
+ * Dual LGPL v2.1/GPL v2 license.
*/
#include <linux/fs.h>
-enum instrum_type {
- INSTRUM_TRACEPOINTS,
+#define LTTNG_SYM_NAME_LEN 128
+
+enum lttng_kernel_instrumentation {
+ LTTNG_KERNEL_TRACEPOINT,
+ LTTNG_KERNEL_KPROBE,
+ LTTNG_KERNEL_FUNCTION,
};
/*
* LTTng DebugFS ABI structures.
*/
-struct lttng_channel {
- int overwrite; /* 1: overwrite, 0: discard */
- u64 subbuf_size;
- u64 num_subbuf;
- unsigned int switch_timer_interval;
- unsigned int read_timer_interval;
+struct lttng_kernel_channel {
+ int overwrite; /* 1: overwrite, 0: discard */
+ uint64_t subbuf_size; /* in bytes */
+ uint64_t num_subbuf;
+ unsigned int switch_timer_interval; /* usecs */
+ unsigned int read_timer_interval; /* usecs */
+};
+
+/*
+ * Either addr is used, or symbol_name and offset.
+ */
+struct lttng_kernel_kprobe {
+ uint64_t addr;
+
+ uint64_t offset;
+ char symbol_name[LTTNG_SYM_NAME_LEN];
};
-struct lttng_event {
- enum instrum_type itype;
- char name[];
+struct lttng_kernel_function_tracer {
+ char symbol_name[LTTNG_SYM_NAME_LEN];
};
-/* TODO: LTTNG_KERNEL_SESSION..... */
-/* TODO: ioctl LTTNG_KERNEL_TRACER_VERSION */
+struct lttng_kernel_event {
+ char name[LTTNG_SYM_NAME_LEN]; /* event name */
+ enum lttng_kernel_instrumentation instrumentation;
+ /* Per instrumentation type configuration */
+ union {
+ struct lttng_kernel_kprobe kprobe;
+ struct lttng_kernel_function_tracer ftrace;
+ } u;
+};
+
+struct lttng_kernel_tracer_version {
+ uint32_t version;
+ uint32_t patchlevel;
+ uint32_t sublevel;
+};
+
+enum lttng_kernel_context_type {
+ LTTNG_KERNEL_CONTEXT_PID,
+ LTTNG_KERNEL_CONTEXT_PERF_COUNTER,
+ LTTNG_KERNEL_CONTEXT_COMM,
+ LTTNG_KERNEL_CONTEXT_PRIO,
+ LTTNG_KERNEL_CONTEXT_NICE,
+};
+
+struct lttng_kernel_perf_counter_ctx {
+ uint32_t type;
+ uint64_t config;
+};
+
+struct lttng_kernel_context {
+ enum lttng_kernel_context_type ctx;
+ union {
+ struct lttng_kernel_perf_counter_ctx perf_counter;
+ } u;
+};
+
+/* LTTng file descriptor ioctl */
+#define LTTNG_KERNEL_SESSION _IO(0xF6, 0x40)
+#define LTTNG_KERNEL_TRACER_VERSION \
+ _IOR(0xF6, 0x41, struct lttng_kernel_tracer_version)
+#define LTTNG_KERNEL_TRACEPOINT_LIST _IO(0xF6, 0x42)
+
+/* Session FD ioctl */
+#define LTTNG_KERNEL_METADATA \
+ _IOW(0xF6, 0x50, struct lttng_kernel_channel)
+#define LTTNG_KERNEL_CHANNEL \
+ _IOW(0xF6, 0x51, struct lttng_kernel_channel)
+#define LTTNG_KERNEL_SESSION_START _IO(0xF6, 0x52)
+#define LTTNG_KERNEL_SESSION_STOP _IO(0xF6, 0x53)
+
+/* Channel FD ioctl */
+#define LTTNG_KERNEL_STREAM _IO(0xF6, 0x60)
+#define LTTNG_KERNEL_EVENT \
+ _IOW(0xF6, 0x61, struct lttng_kernel_event)
-#define LTTNG_SESSION _IO(0xF6, 0x40)
-#define LTTNG_SESSION_START _IO(0xF6, 0x41)
-#define LTTNG_SESSION_STOP _IO(0xF6, 0x42)
-#define LTTNG_CHANNEL _IOW(0xF6, 0x43, struct lttng_channel)
-#define LTTNG_STREAM _IO(0xF6, 0x44)
-#define LTTNG_EVENT _IOW(0xF6, 0x45, struct lttng_event)
-#define LTTNG_METADATA _IOW(0xF6, 0x46, struct lttng_channel)
+/* Event and Channel FD ioctl */
+#define LTTNG_KERNEL_CONTEXT \
+ _IOW(0xF6, 0x70, struct lttng_kernel_context)
#endif /* _LTT_DEBUGFS_ABI_H */