Add context support with metadata description

[lttng-modules.git] / ltt-debugfs-abi.h

diff --git a/ltt-debugfs-abi.h b/ltt-debugfs-abi.h
index d0c2dd1aa7e4c7038e8c7d7f55b6593c570b6176..a0299967d0d50d6c310dad5bac5bb5f83c5a2a46 100644 (file)
--- a/ltt-debugfs-abi.h
+++ b/ltt-debugfs-abi.h
@@ -65,6 +65,27 @@ struct lttng_kernel_tracer_version {
        uint32_t sublevel;
 };
 
+enum lttng_context {
+       LTTNG_CONTEXT_PID,
+       LTTNG_CONTEXT_PERF_COUNTER,
+};
+
+struct lttng_kernel_pid_ctx {
+};
+
+struct lttng_kernel_perf_counter_ctx {
+       uint32_t type;
+       uint64_t config;
+};
+
+struct lttng_kernel_context {
+       enum lttng_context ctx;
+       union {
+               struct lttng_kernel_pid_ctx pid;
+               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            \
@@ -84,4 +105,8 @@ struct lttng_kernel_tracer_version {
 #define LTTNG_KERNEL_EVENT                     \
        _IOW(0xF6, 0x61, struct lttng_kernel_event)
 
+/* Event and Channel FD ioctl */
+#define LTTNG_KERNEL_CONTEXT                   \
+       _IOW(0xF6, 0x70, struct lttng_kernel_context)
+
 #endif /* _LTT_DEBUGFS_ABI_H */