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sched/fair: trace energy_diff for non boosted tasks

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In systems where SchedTune is enabled, we do not report energy diff for non
boosted tasks. Let's fix this by always genereting an energy_diff event where
however:
  nrg.delta = 0, since we skip energy normalization
  payoff = nrg.diff, since the payoff is defined just by the energy difference

Change-Id: I9a11ec19b6f56da04147f5ae5b47daf1dd180445
Signed-off-by: Patrick Bellasi <patrick.bellasi@arm.com>
Signed-off-by: Chris Redpath <chris.redpath@arm.com>
This commit is contained in:
Patrick Bellasi 2017-09-07 12:24:45 +01:00 • committed by Chris Redpath
parent 2f30db8df4
commit 2aada289d7
1 changed files with 7 additions and 1 deletions
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8
kernel/sched/fair.c
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@ -5702,8 +5702,14 @@ energy_diff(struct energy_env *eenv)
__energy_diff(eenv);
/* Return energy diff when boost margin is 0 */
if (boost == 0)
if (boost == 0) {
trace_sched_energy_diff(eenv->task,
eenv->src_cpu, eenv->dst_cpu, eenv->util_delta,
eenv->nrg.before, eenv->nrg.after, eenv->nrg.diff,
eenv->cap.before, eenv->cap.after, eenv->cap.delta,
0, -eenv->nrg.diff);
return eenv->nrg.diff;
}
/* Compute normalized energy diff */
nrg_delta = normalize_energy(eenv->nrg.diff);