Lines Matching refs:histogram

131 Since it is too long to write a histogram action as a string for per-event
133 for the histogram actions. For the detail of the each parameter,
134 please read the event histogram document [3]_.
136 .. [3] See :ref:`Documentation/trace/histogram.rst <histogram>`
139   Set histogram key parameters. (Mandatory)
140   The 'N' is a digit string for the multiple histogram. You can omit it
141   if there is one histogram on the event.
144   Set histogram value parameters.
147   Set histogram sort parameter options.
150   Set histogram size (number of entries).
153   Set histogram name.
159   Set histogram control parameter. You can set one of them.
162   Set histogram 'onmatch' handler matching event parameter.
164   if there is one 'onmatch' handler on this histogram.
167   Set histogram 'trace' action for 'onmatch'.
172   Set histogram 'onmax' handler variable parameter.
175   Set histogram 'onchange' handler variable parameter.
178   Set histogram 'save' action parameters for 'onmax' or 'onchange' handler.
183   Set histogram 'snapshot' action for 'onmax' or 'onchange' handler.
188   Set histogram filter expression. You don't need 'if' in the FILTER_EXPR.
191 option if the 'actions' option has a histogram action.
212 events, and synthetic events with histogram, write a boot config like