[Bug 200712] log spamming i915 since recent MFC to stable/10

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=200712

--- Comment #5 from parv at pair.com ---
The message "Attempting to unbind pinned buffer" has rendered "dmesg" output
rather useless ...

# dmesg -a \
  | fgrep 'error: [drm:pid4:i915_gem_object_unbind] *ERROR* Attempting to
unbind pinned buffer' \
  | wc
    1158    9264   97272


... after uptime of about 5 hour 20 minute; (Xorg was started just after boot).
For completeness sake ...

# dmesg -a | fgrep -v '<above error message>' | wc
      17     146     940


FreeBSD version is ...

# uname -a
FreeBSD holstein.holy.cow 10.2-STABLE FreeBSD 10.2-STABLE #1 r286917: Wed Aug
19
04:42:56 HST 2015  root at holstein.holy.cow:/misc/obj-10/misc/src-10/sys/GENERIC 
i386

... and an excerpt of dmesg saved in past of Lenovo Thinkpad X200 ...

...
CPU: Intel(R) Core(TM)2 Duo CPU     P8600  @ 2.40GHz (2394.06-MHz 686-class
CPU)
  Origin="GenuineIntel"  Id=0x1067a  Family=0x6  Model=0x17  Stepping=10
 
Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
 
Features2=0xc08e3fd<SSE3,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,XSAVE,OSXSAVE>
  AMD Features=0x20100000<NX,LM>
  AMD Features2=0x1<LAHF>
  VT-x: Basic Features=0x5a0800<SMM,INS/OUTS>
        Pin-Based Controls=0x3f<ExtINT,NMI,VNMI>
        Primary Processor
Controls=0xf7f9fffe<INTWIN,TSCOff,HLT,INVLPG,MWAIT,RDPMC,RDTSC,CR3-LD,CR3-ST,CR8-LD,CR8-ST,TPR,NMIWIN,MOV-DR,IO,IOmap,MSRmap,MONITOR,PAUSE>
        Secondary Processor Controls=0x41<APIC,WBINVD>
        Exit Controls=0x5a0800<PAT-LD,EFER-SV,PTMR-SV>
        Entry Controls=0x5a0800
  TSC: P-state invariant, performance statistics
...

... and from Xorg log ...

# egrep -ri 'gpu|i9[16]5' /var/log/Xorg.0.log
[    43.172] (==) Not automatically adding GPU devices
    915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM,
[    47.668] (II) intel(0): [DRI2]   DRI driver: i965
[    48.156] (II) AIGLX: Loaded and initialized i965

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