From 4422d1322a8ed47bc9d743894ad47d82f33eba7c Mon Sep 17 00:00:00 2001 From: Stephan Diestelhorst Date: Mon, 16 Jun 2014 14:59:44 +0100 Subject: energy: Small extentions and fixes for DVFS handler These additions allow easier interoperability with and querying from an additional controller which will be in a separate patch. Also adding warnings for changing the enabled state of the handler across checkpoint / resume and deviating from the state in the configuration. Contributed-by: Akash Bagdia --- src/sim/clock_domain.cc | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'src/sim/clock_domain.cc') diff --git a/src/sim/clock_domain.cc b/src/sim/clock_domain.cc index 746ef12fd..8f45bba09 100644 --- a/src/sim/clock_domain.cc +++ b/src/sim/clock_domain.cc @@ -136,6 +136,11 @@ SrcClockDomain::perfLevel(PerfLevel perf_level) { assert(validPerfLevel(perf_level)); + if (perf_level == _perfLevel) { + // Silently ignore identical overwrites + return; + } + DPRINTF(ClockDomain, "DVFS: Switching performance level of domain %s "\ "(id: %d) from %d to %d\n", name(), domainID(), _perfLevel, perf_level); @@ -162,6 +167,13 @@ SrcClockDomain::unserialize(Checkpoint *cp, const std::string §ion) { ClockDomain::unserialize(cp, section); UNSERIALIZE_SCALAR(_perfLevel); +} + +void +SrcClockDomain::startup() +{ + // Perform proper clock update when all related components have been + // created (i.e. after unserialization / object creation) perfLevel(_perfLevel); } -- cgit v1.2.3