[for-next][PATCH 08/30] tracing: Add hist event trigger command

From: Tom Zanussi 'hist' triggers allow users to continually aggregate trace events, which can then be viewed afterwards by simply reading a 'hist' file containing the aggregation in a human-readable format. The basic idea is very simple and boils down to a

[for-next][PATCH 08/30] tracing: Add hist event trigger command

From: Tom Zanussi 'hist' triggers allow users to continually aggregate trace events, which can then be viewed afterwards by simply reading a 'hist' file containing the aggregation in a human-readable format. The basic idea is very simple and boils down to a mechanism whereby trace events,