[Bug 78280] New: [PNV/IVB/HSW]igt/kms_flip_tiling/flip-changes-tiling costs long time to execute

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=78280

          Priority: medium
            Bug ID: 78280
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [PNV/IVB/HSW]igt/kms_flip_tiling/flip-changes-tiling
                    costs long time to execute
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: jinxianx.guo at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 98451
  --> https://bugs.freedesktop.org/attachment.cgi?id=98451&action=edit
dmesg

*System Environment:
--------------------------
Platform: PNV IVB HSW
kernel: 
-nightly: 08ce6614d07dd1e426109672a5e323317c8d6ec7(fails)
-queued: e5c03ca362819ba8ffbe5674340b61b9cd75de8f (fails)
-fixes: 9bbfd20abe5025adbb0ac75160bd2e41158a9e83 (fails)


 *Bug detailed description:
-----------------------------
igt/kms_flip_tiling/flip-changes-tiling costs long time to execute, the test
still didn't finish after 47 minutes.



Output:
[root at x-pnv2 tests]# date;./kms_flip_tiling --run-subtest
flip-changes-tiling;date
Mon May  5 13:55:41 EDT 2014
IGT-Version: 1.6-gc864279 (i686) (Linux:
3.14.0_drm-intel-next-queued_e5c03c_20140504+ i686)

^C
You have new mail in /var/spool/mail/root
[root at x-pnv2 tests]# date
Mon May  5 14:42:15 EDT 2014



 *Reproduce steps:
---------------------------- 
1. ./kms_flip_tiling --run-subtest flip-changes-tiling

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