[dpdk-dev] [Bug 790] [dpdk-20.11] unit_tests_power/power_cpufreq: unit test failed

[dpdk-dev] [Bug 790] [dpdk-20.11] unit_tests_power/power_cpufreq: unit test failed

[bugzilla]

https://bugs.dpdk.org/show_bug.cgi?id=790

            Bug ID: 790
           Summary: [dpdk-20.11] unit_tests_power/power_cpufreq: unit test
                    failed
           Product: DPDK
           Version: 20.11
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: other
          Assignee: dev@dpdk.org
          Reporter: yux.jiang@intel.com
  Target Milestone: ---

Environment
A release candidate tarball can be found at:
https://dpdk.org/browse/dpdk-stable/tag/?id=v20.11.3-rc1
These patches are located at branch 20.11 of dpdk-stable repo:
https://dpdk.org/browse/dpdk-stable/
DPDK version: Use make showversion or for a non-released version: git remote -v
&& git show-ref --heads
dpdk-20.11.3-rc1: c5f4e9dd155a4c99e219a734315b899d4340d304
OS: Red Hat Enterprise Linux release 8.3/4.18.0-305.7.1.el8_4.x86_64
Compiler: gcc version 8.4.1 20200928 (Red Hat 8.4.1-1) (GCC)
Hardware platform: Intel(R) Xeon(R) CPU E5-2699 v3 @ 2.30GHz
NIC hardware: 82599ES 10-Gigabit SFI/SFP+ Network Connection 10fb(niantic)
NIC firmware: 0x000161bf 


Test Setup：
1.
usertools/dpdk-devbind.py --force --bind=vfio-pci 0000:81:00.0 0000:81:00.1
2.
x86_64-native-linuxapp-gcc/app/test/dpdk-test -l 1-71 -n 4 -- -i
3.
power_cpufreq_autotest

Show the output from the previous commands.
RTE>>power_cpufreq_autotest
POWER: Env isn't set yet!
POWER: Attempting to initialise ACPI cpufreq power management...
POWER: Initialized successfully for lcore 2 power management
POWER: Power management governor of lcore 2 has been set back to userspace
successfully
POWER: Power management of lcore 2 has exited from 'userspace' mode and been
set back to the original
POWER: Lcore id 128 can not exceeds 127
POWER: Initialized successfully for lcore 2 power management
POWER: Power management of lcore 2 is in use
POWER: Invalid lcore ID
POWER: NULL buffer supplied
POWER: Buffer size is not enough
POWER: Invalid lcore ID
POWER: Power management governor of lcore 2 has been set back to userspace
successfully
POWER: Power management of lcore 2 has exited from 'userspace' mode and been
set back to the original
Test Failed

Expected Result:
RTE>>power_cpufreq_autotest
POWER: Env isn't set yet!
POWER: Attempting to initialise ACPI cpufreq power management...
POWER: Initialized successfully for lcore 2 power management
POWER: Power management governor of lcore 2 has been set back to  successfully
POWER: Power management of lcore 2 has exited from 'userspace' mode and been
set back to the original
POWER: Lcore id 128 can not exceeds 127
POWER: Initialized successfully for lcore 2 power management
POWER: Power management of lcore 2 is in use
POWER: Invalid lcore ID
POWER: NULL buffer supplied
POWER: Buffer size is not enough
POWER: Invalid lcore ID
POWER: Invalid lcore ID
POWER: Invalid frequency index 64, which should be less than 15
POWER: Invalid frequency index 15, which should be less than 15
POWER: Invalid lcore ID
POWER: Invalid lcore ID
POWER: Invalid lcore ID
POWER: Invalid lcore ID
POWER: Invalid lcore ID
POWER: Invalid lcore ID
POWER: Power management governor of lcore 2 has been set back to  successfully
POWER: Power management of lcore 2 has exited from 'userspace' mode and been
set back to the original
POWER: Power management of lcore 2 is not used
POWER: Lcore id 128 can not exceeds 127
Test OK


Regression
Is this issue a regression: (Y/N) Y
First bad commit id:  commit 606a234c6, but which has been fixed in 21.08.
the former part of the fixed patch(http://dpdk.org/patch/95860) has been merged
into LTS20.11.3-rc1. Need future debug.

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