tree 16cdca158ec5d0b3dc191e8b6e860d5e6c8e8e6b
parent 4b4fe3dd97c1005aae363b66651a8feafe590f17
author Tom Zanussi <tom.zanussi@linux.intel.com> 1519753953 -0600
committer Tom Zanussi <tom.zanussi@linux.intel.com> 1538004582 -0500

tracing: Add hist trigger onchange() handler

Add support for a hist:onchange($var) handler, similar to the onmax()
handler but triggering whenever there's any change in $var, not just a
max.

Also, add a testcase for it.

Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>