Merge ~alextu/plainbox-provider-pc-sanity:turbostat-tips into plainbox-provider-pc-sanity:master

[Alex Tu]

[Alex Tu (alextu)]

I put more tips and instruction for this test case.
Which is targeted to cover cases like:
 - https://bugs.launchpad.net/somerville/+bug/1901504
 - https://bugs.launchpad.net/somerville/+bug/1901502
and
 https://chat.canonical.com/canonical/pl/d8qbk9wcq3rqtfoi771wawdspa

[Kai-Chuan Hsieh (kchsieh)]

LGTM.

review: Approve

[jeremyszu (os369510)]

looks good so far.
Since I just confirmed the C10 is out-of HP scope.
I'll check the information whether is enough for me in the future if we need to deal with it.

review: Approve

[Leon Liao (lihow731)]

Pleas see my comment in line.

review: Needs Information

diff --git a/bin/check-turbostat-power-residency.sh b/bin/check-turbostat-power-residency.sh
index 58be121..ffdc02b 100755
--- a/bin/check-turbostat-power-residency.sh
+++ b/bin/check-turbostat-power-residency.sh
@@ -92,4 +92,15 @@ for i in "${!turbostat[@]}"; do
     fi
 done
 
-[ "$state" == "pass" ] || exit 1
+if [ "$state" != "pass" ]; then
+    echo "Your system not get Intel CPU PC10 or s0ix as expected, it could impact e-star compliance."
+    echo "If the following test cases not run, that means your CPU architure or kernel driver not support PC10 or s0ix, please open bugs for HWE"
+    echo " - power-management/cpu-low-power-idle"
+    echo " - power-management/system-low-power-idle executed and passed."
+    echo "Otherwise, please get PHM report to check which device blocking PC10 or s0ix and open bugs for HWE to check kernel modules"
+    echo ""
+    echo "reference:"
+    echo " - https://01.org/blogs/qwang59/2020/linux-s0ix-troubleshooting"
+    echo " - https://01.org/blogs/qwang59/2018/how-achieve-s0ix-states-linux"
+    exit 1
+fi