Messages in this thread | | | Date | Thu, 16 Aug 2007 16:16:49 -0400 | From | Dave Jones <> | Subject | khvcd |
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Hi Rusty, In profiling bootup time, we noticed something new appeared on the graph at http://pjones.fedorapeople.org/bootchart-preinit.png in the name of khvcd.
"wtf is this" was my first reaction. Followed shortly by much headscratching after finding it's created by drivers/char/hvc_console.c whose Kconfig yeilds..
config HVC_DRIVER bool help Users of pSeries machines that want to utilize the hvc console front-end module for their backend console driver should select this option.
Which is a little confusing for those of us not actually using a pSeries. The above profile came from a x86 box. A little more grepping around revealed that lguest select's HVC_DRIVER, thus sneaking this config option into the build.
asides from the needed Kconfig clarification, is it necessary for khvcd to run at all if the lguest module hasn't been loaded ? Is it possible we can somehow delay creation of the kthread ?
Dave
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