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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - i915_init takes over 100 ms"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105622#c23">Comment # 23</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - i915_init takes over 100 ms"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105622">bug 105622</a>
from <span class="vcard"><a class="email" href="mailto:pmenzel+bugs.freedesktop@molgen.mpg.de" title="Paul Menzel <pmenzel+bugs.freedesktop@molgen.mpg.de>"> <span class="fn">Paul Menzel</span></a>
</span></b>
<pre>With Linux 4.16-rc7+ (master branch), and the patch applied, on a Lenovo X60
`i915_init()` still takes 87 milliseconds according to `initcall_debug`.
```
[ 1.453313] calling i915_init+0x0/0x56 [i915] @ 98
[ 1.453736] pci 0000:00:00.0: Intel 945GM Chipset
[ 1.453752] pci 0000:00:00.0: detected gtt size: 262144K total, 262144K
mappable
[ 1.454321] pci 0000:00:00.0: detected 8192K stolen memory
[ 1.454430] checking generic (d0000000 300000) vs hw (d0000000 10000000)
[ 1.454432] fb: switching to inteldrmfb from VESA VGA
[ 1.454489] Console: switching to colour dummy device 80x25
[ 1.454733] [drm] Replacing VGA console driver
[ 1.514163] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 1.514166] [drm] Driver supports precise vblank timestamp query.
[ 1.514650] i915 0000:00:02.0: vgaarb: changed VGA decodes:
olddecodes=io+mem,decodes=io+mem:owns=io+mem
[ 1.529553] [drm] RC6 disabled, disabling runtime PM support
[ 1.529637] [drm] initialized overlay support
[ 1.530520] [drm] Initialized i915 1.6.0 20171222 for 0000:00:02.0 on minor
0
[ 1.530811] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no)
[ 1.536777] clocksource: timekeeping watchdog on CPU0: Marking clocksource
'tsc-early' as unstable because the skew is too large:
[ 1.536784] clocksource: 'hpet' wd_now: 22a9b5a
wd_last: 10310d8 mask: ffffffff
[ 1.536786] clocksource: 'tsc-early' cs_now: 42dfe9b3e
cs_last: 3fdd506a0 mask: ffffffffffffffff
[ 1.536945] clocksource: Switched to clocksource hpet
[ 1.542606] acpi device:04: registered as cooling_device3
[ 1.542730] input: Video Bus as
/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input5
[ 1.543404] initcall i915_init+0x0/0x56 [i915] returned 0 after 87888 usecs
```</pre>
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