#define LTTNG_SYM_NAME_LEN 128
enum lttng_kernel_instrumentation {
- LTTNG_KERNEL_TRACEPOINT,
- LTTNG_KERNEL_KPROBE,
- LTTNG_KERNEL_FUNCTION,
+ LTTNG_KERNEL_TRACEPOINT = 0,
+ LTTNG_KERNEL_KPROBE = 1,
+ LTTNG_KERNEL_FUNCTION = 2,
+ LTTNG_KERNEL_KRETPROBE = 3,
+ LTTNG_KERNEL_NOOP = 4, /* not hooked */
+ LTTNG_KERNEL_SYSCALL = 5,
+};
+
+/*
+ * LTTng consumer mode
+ */
+enum lttng_kernel_output {
+ LTTNG_KERNEL_SPLICE = 0,
+ LTTNG_KERNEL_MMAP = 1,
};
/*
uint64_t num_subbuf;
unsigned int switch_timer_interval; /* usecs */
unsigned int read_timer_interval; /* usecs */
+ enum lttng_kernel_output output; /* splice, mmap */
+};
+
+struct lttng_kernel_kretprobe {
+ uint64_t addr;
+
+ uint64_t offset;
+ char symbol_name[LTTNG_SYM_NAME_LEN];
};
/*
char symbol_name[LTTNG_SYM_NAME_LEN];
};
+/*
+ * For syscall tracing, name = '\0' means "enable all".
+ */
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_kretprobe kretprobe;
struct lttng_kernel_kprobe kprobe;
struct lttng_kernel_function_tracer ftrace;
} u;
uint32_t sublevel;
};
+enum lttng_kernel_calibrate_type {
+ LTTNG_KERNEL_CALIBRATE_KRETPROBE,
+};
+
+struct lttng_kernel_calibrate {
+ enum lttng_kernel_calibrate_type type; /* type (input) */
+};
+
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,
- LTTNG_KERNEL_CONTEXT_VPID,
- LTTNG_KERNEL_CONTEXT_TID,
- LTTNG_KERNEL_CONTEXT_VTID,
- LTTNG_KERNEL_CONTEXT_PPID,
- LTTNG_KERNEL_CONTEXT_VPPID,
+ LTTNG_KERNEL_CONTEXT_PID = 0,
+ LTTNG_KERNEL_CONTEXT_PERF_COUNTER = 1,
+ LTTNG_KERNEL_CONTEXT_COMM = 2,
+ LTTNG_KERNEL_CONTEXT_PRIO = 3,
+ LTTNG_KERNEL_CONTEXT_NICE = 4,
+ LTTNG_KERNEL_CONTEXT_VPID = 5,
+ LTTNG_KERNEL_CONTEXT_TID = 6,
+ LTTNG_KERNEL_CONTEXT_VTID = 7,
+ LTTNG_KERNEL_CONTEXT_PPID = 8,
+ LTTNG_KERNEL_CONTEXT_VPPID = 9,
};
struct lttng_kernel_perf_counter_ctx {
_IOR(0xF6, 0x41, struct lttng_kernel_tracer_version)
#define LTTNG_KERNEL_TRACEPOINT_LIST _IO(0xF6, 0x42)
#define LTTNG_KERNEL_WAIT_QUIESCENT _IO(0xF6, 0x43)
+#define LTTNG_KERNEL_CALIBRATE \
+ _IOWR(0xF6, 0x44, struct lttng_kernel_calibrate)
/* Session FD ioctl */
#define LTTNG_KERNEL_METADATA \