Operating Systems 2015F Lecture 7: Difference between revisions
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==Notes== | ==Notes== | ||
===The project=== | |||
* Modify the linux kernel | |||
* Document what you did and explain why you did it | |||
* Evaluate what you did | |||
You will submit: | |||
* code | |||
* a report | |||
Suggested scope: make a "feedback loop" | |||
* measure something | |||
* change something | |||
Don't limit yoursef to doing things that are "useful" | |||
Entertaining is also good | |||
Educational is also good | |||
Feedback loops give systems personality | |||
Go with it | |||
Constraint: the system should still be "usable" | |||
(But it may be annoying to use) | |||
Hard part | |||
* debugging can get weird | |||
Groups are allowed | |||
* but contribution of every group member should be clear, significant, and documented | |||
Treat the "oral" portion (interview) as a proposal | |||
Project should be "appropriate" for kernel implementation. | |||
Project may include a userspace portion however. | |||
===kernel source code=== | |||
During the lecture we looked a lot at the The Linux kernel cross reference, http://lxr.free-electrons.com/ . Here are some of the pages that we looked at: | During the lecture we looked a lot at the The Linux kernel cross reference, http://lxr.free-electrons.com/ . Here are some of the pages that we looked at: | ||
* [http://lxr.free-electrons.com/source/kernel/sys.c?v=3.19#L822 getpid system call implementation] | * [http://lxr.free-electrons.com/source/kernel/sys.c?v=3.19#L822 getpid system call implementation] | ||
* [http://lxr.free-electrons.com/source/include/linux/sched.h?v=3. | * [http://lxr.free-electrons.com/source/include/linux/sched.h?v=3.19#L1274 struct task_struct] | ||
* [http://lxr.free-electrons.com/source/fs/read_write.c?v=3. | * [http://lxr.free-electrons.com/source/fs/read_write.c?v=3.19#L375 do_sync_read()] | ||
* [http://lxr.free-electrons.com/source/include/linux/fs.h?v=3. | * [http://lxr.free-electrons.com/source/include/linux/fs.h?v=3.19#L1507 struct file_operations] | ||
Latest revision as of 14:45, 1 October 2015
Video
The video from the lecture given on September 30, 2015 is now available.
Notes
The project
- Modify the linux kernel
- Document what you did and explain why you did it
- Evaluate what you did
You will submit:
- code
- a report
Suggested scope: make a "feedback loop"
- measure something
- change something
Don't limit yoursef to doing things that are "useful"
Entertaining is also good Educational is also good
Feedback loops give systems personality Go with it
Constraint: the system should still be "usable" (But it may be annoying to use)
Hard part
- debugging can get weird
Groups are allowed
- but contribution of every group member should be clear, significant, and documented
Treat the "oral" portion (interview) as a proposal
Project should be "appropriate" for kernel implementation.
Project may include a userspace portion however.
kernel source code
During the lecture we looked a lot at the The Linux kernel cross reference, http://lxr.free-electrons.com/ . Here are some of the pages that we looked at: