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Re: [GSoC 2013] Interested in "Light weight precision user level time reading"
Sorry, re-post with plain text mode. Thanks someone for their kindly
I'm a graduate student from China. I'm interested in the NetBSD's
"Light weight precision user level time reading" project. I'd like to
take it as my GSoC 2013 project.
But before sending the detailed proposal, I'd like listen to your
advices/comments since my solution is a bit different: Allocate one
special page on which the kernel and user-space process can share data
such as bintime,etc. The kernel will update the shared data at some
event point, the kernel will also need to tell which timecounter it's
using. The userspace just reads out the bintime and read the
timecounter to adjust the final result. Sure the concurrency between
kernel and userspace should be resolved properly.
What do you think about this solution? Is it acceptable?
Thanks in advance
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