-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 */
+enum lttng_kernel_instrumentation {
+ LTTNG_KERNEL_TRACEPOINT = 0,
+ LTTNG_KERNEL_KPROBE = 1,
+ LTTNG_KERNEL_FUNCTION = 2,
+ LTTNG_KERNEL_KRETPROBE = 3,
+};
+
+enum lttng_kernel_context_type {
+ 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,
+};
+
+/* Perf counter attributes */
+struct lttng_kernel_perf_counter_ctx {
+ uint32_t type;
+ uint64_t config;
+ char name[LTTNG_SYMBOL_NAME_LEN];