tree f4325c9c48f58ddc0177814de58911212260b361
parent 9f952a3aed1d828f30a39da758d1de5c3c70fc19
author Tom Zanussi <tom.zanussi@linux.intel.com> 1526078051 -0500
committer Tom Zanussi <tom.zanussi@linux.intel.com> 1537891253 -0500

tracing: Add snapshot action

Add support for hist:handlerXXX($var).snapshot(), which will take a
snapshot of the current trace buffer whenever handlerXXX is hit.

As a first user, this also adds snapshot() action support for the
onmax() handler i.e. hist:onmax($var).snapshot().

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