Revision 050c6c9b896625d9fa498265be17b82c5fc65257 authored by Ingo Molnar on 19 December 2010, 22:24:27 UTC, committed by Ingo Molnar on 19 December 2010, 22:24:27 UTC
Linus reported that the new warning introduced by commit f26f9aff6aaf "Sched: fix skip_clock_update optimization" triggers. The need_resched flag can be set by other CPUs asynchronously so this debug check is bogus - remove it. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> LKML-Reference: <AANLkTinJ8hAG1TpyC+CSYPR47p48+1=E7fiC45hMXT_1@mail.gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
1 parent 8e92c20
video-output.txt
Video Output Switcher Control
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2006 luming.yu@intel.com
The output sysfs class driver provides an abstract video output layer that
can be used to hook platform specific methods to enable/disable video output
device through common sysfs interface. For example, on my IBM ThinkPad T42
laptop, The ACPI video driver registered its output devices and read/write
method for 'state' with output sysfs class. The user interface under sysfs is:
linux:/sys/class/video_output # tree .
.
|-- CRT0
| |-- device -> ../../../devices/pci0000:00/0000:00:01.0
| |-- state
| |-- subsystem -> ../../../class/video_output
| `-- uevent
|-- DVI0
| |-- device -> ../../../devices/pci0000:00/0000:00:01.0
| |-- state
| |-- subsystem -> ../../../class/video_output
| `-- uevent
|-- LCD0
| |-- device -> ../../../devices/pci0000:00/0000:00:01.0
| |-- state
| |-- subsystem -> ../../../class/video_output
| `-- uevent
`-- TV0
|-- device -> ../../../devices/pci0000:00/0000:00:01.0
|-- state
|-- subsystem -> ../../../class/video_output
`-- uevent
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