[Bug 93927] New: [APL] pm_rc6_residency fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93927

            Bug ID: 93927
           Summary: [APL] pm_rc6_residency fails
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: christophe.prigent at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 121392
  --> https://bugs.freedesktop.org/attachment.cgi?id=121392&action=edit
dmesg

Setup:
======
Platform: Broxton P A0 Platform
CPU Name : Intel(R) @ 1.2 GHz (family: 6, model: 92, stepping: 8) – 4 cores
SoC : BROXTON-P A0
CRB :  Apollo Lake RVPC1 Fab1 
Reworks : R14, R06C and R16

Software:
=========
BIOS (IFWI Version): APLK_IFWI_X64_R_2015_41_5_02 
KSC : 1.02
Linux distribution: Ubuntu 15.10 64 bits
Kernel: drm-intel-nightly 4.4.0 8114b00 from
http://cgit.freedesktop.org/drm-intel/
drm: tag libdrm-2.4.66 e342c0f from http://cgit.freedesktop.org/mesa/drm/
mesa: tag mesa-11.0.8 261daab from http://cgit.freedesktop.org/mesa/mesa/
cairo: tag 1.15.2 db8a7f1 from http://cgit.freedesktop.org/cairo
waffle: master bb29b2a from https://github.com/waffle-gl/waffle
xorg-server-macros: master d7acec2 from
git://git.freedesktop.org/git/xorg/util/macros
libva: tag libva-1.6.1 cb418f6 from http://cgit.freedesktop.org/libva/
vaapi-intel-driver: tag 1.6.1 2110b3a from
http://cgit.freedesktop.org/vaapi/intel-driver

Tool:
======
intel-gpu-tool: tag intel-gpu-tools-1.13 51e965f from
http://cgit.freedesktop.org/xorg/app/intel-gpu-tools/

Connect one monitor to HDMI port (Asus PB287Q)

Steps:
------
1. Execute command:
sudo -s
cd <…>/intel-gpu-tools/tests
./pm_rc6_residency

Actual result:
--------------
1. Subtests are fail or skip

IGT-Version: 1.13-NOT-GIT (x86_64) (Linux: 4.4.0-nightly+ x86_64)
Residency in rc6 or deeper state: 0 ms (sleep duration 3454 ms) (ratio to
expected duration: 0.00)
(pm_rc6_residency:1198) CRITICAL: Test assertion failure function
residency_accuracy, file pm_rc6_residency.c:110:
(pm_rc6_residency:1198) CRITICAL: Failed assertion: ratio > 0.9 && ratio <= 1
(pm_rc6_residency:1198) CRITICAL: Sysfs RC6 residency counter is inaccurate.
Stack trace:
  #0 [__igt_fail_assert+0xf1]
  #1 [residency_accuracy+0x86]
  #2 [__real_main192+0x136]
  #3 [main+0x29]
  #4 [__libc_start_main+0xf0]
  #5 [_start+0x29]
  #6 [<unknown>+0x29]
Subtest rc6-accuracy failed.
**** DEBUG ****
(pm_rc6_residency:1198) DEBUG: Test requirement passed: !(!(rc6_mask &
RC6_ENABLED))
(pm_rc6_residency:1198) INFO: Residency in rc6 or deeper state: 0 ms (sleep
duration 3454 ms) (ratio to expected duration: 0.00)
(pm_rc6_residency:1198) CRITICAL: Test assertion failure function
residency_accuracy, file pm_rc6_residency.c:110:
(pm_rc6_residency:1198) CRITICAL: Failed assertion: ratio > 0.9 && ratio <= 1
(pm_rc6_residency:1198) CRITICAL: Sysfs RC6 residency counter is inaccurate.
****  END  ****
Subtest rc6-accuracy: FAIL (0.179s)
Test requirement not met in function __real_main192, file
pm_rc6_residency.c:218:
Test requirement: !(!((rc6_mask & RC6_ENABLED) && (IS_VALLEYVIEW(devid) ||
IS_CHERRYVIEW(devid))))
Subtest media-rc6-accuracy: SKIP (0.000s)
Test requirement not met in function __real_main192, file
pm_rc6_residency.c:223:
Test requirement: !(!(rc6_mask & RC6P_ENABLED))
Subtest rc6p-accuracy: SKIP (0.000s)
Test requirement not met in function __real_main192, file
pm_rc6_residency.c:228:
Test requirement: !(!(rc6_mask & RC6PP_ENABLED))
Subtest rc6pp-accuracy: SKIP (0.000s)

Expected result:
----------------
At least subtest rc6-accuracy is Pass

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