path: root/bl31
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authorYatharth Kochar <yatharth.kochar@arm.com>2016-05-09 18:26:35 +0100
committerSoby Mathew <soby.mathew@arm.com>2016-06-16 08:55:00 +0100
commit170fb93dec97568eec426148019b1670c0b17e7d (patch)
tree456974555d3eb0b9a704198235884b9dd2314545 /bl31
parenta31d8983f42153b0448103bdd47e1f4c9c093765 (diff)
Add optional PSCI STAT residency & count functions
This patch adds following optional PSCI STAT functions: - PSCI_STAT_RESIDENCY: This call returns the amount of time spent in power_state in microseconds, by the node represented by the `target_cpu` and the highest level of `power_state`. - PSCI_STAT_COUNT: This call returns the number of times a `power_state` has been used by the node represented by the `target_cpu` and the highest power level of `power_state`. These APIs provides residency statistics for power states that has been used by the platform. They are implemented according to v1.0 of the PSCI specification. By default this optional feature is disabled in the PSCI implementation. To enable it, set the boolean flag `ENABLE_PSCI_STAT` to 1. This also sets `ENABLE_PMF` to 1. Change-Id: Ie62e9d37d6d416ccb1813acd7f616d1ddd3e8aff
Diffstat (limited to 'bl31')
1 files changed, 4 insertions, 0 deletions
diff --git a/bl31/bl31.mk b/bl31/bl31.mk
index 0491a1a872..8a7fccb0d7 100644
--- a/bl31/bl31.mk
+++ b/bl31/bl31.mk
@@ -63,6 +63,10 @@ ifeq (${ENABLE_PMF}, 1)
BL31_SOURCES += lib/pmf/pmf_main.c
+ifeq (${ENABLE_PSCI_STAT}, 1)
+BL31_SOURCES += services/std_svc/psci/psci_stat.c
BL31_LINKERFILE := bl31/bl31.ld.S
# Flag used to indicate if Crash reporting via console should be included