[Bug 105622] i915_init takes over 100 ms

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105622

--- Comment #10 from Paul Menzel <pmenzel+bugs.freedesktop at molgen.mpg.de> ---
Created attachment 138302
  --> https://bugs.freedesktop.org/attachment.cgi?id=138302&action=edit
Screenshot from HTML output of `bootgraph.py` with 130 ms

Without changing anything, this reboot, I got around 130 ms again. (Times of
`initcall_debug` and ftrace match.)

> i915_init: start=3954.520, end=4089.515, length(w/o overhead)=131.768 ms, return=0

```
$ sudo dmesg | grep i915_init
[    3.954520] calling  i915_init+0x0/0x59 [i915] @ 285
[    4.089515] initcall i915_init+0x0/0x59 [i915] returned 0 after 131768 usecs
```

Please find the screenshot of the graph attached. This time the time is spent
in `fuse_dev_open` and there in `driver_probe_device`. (I have no idea how this
is related.)

Anyway, I am very confused by this and the interactions. I am not even sure
that the graph of `bootgraph.py` is valid.

-- 
You are receiving this mail because:
You are the assignee for the bug.
You are the QA Contact for the bug.
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20180323/36398cb2/attachment.html>