[for-next][PATCH 05/30] tracing: Add lock-free tracing_map

From: Tom Zanussi Add tracing_map, a special-purpose lock-free map for tracing. tracing_map is designed to aggregate or 'sum' one or more values associated with a specific object of type tracing_map_elt, which is associated by the map to a given key. It provides

[for-next][PATCH 05/30] tracing: Add lock-free tracing_map

From: Tom Zanussi Add tracing_map, a special-purpose lock-free map for tracing. tracing_map is designed to aggregate or 'sum' one or more values associated with a specific object of type tracing_map_elt, which is associated by the map to a given key. It provides various hooks allowing