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https://github.com/BugenZhao/OSProject2
https://github.com/BugenZhao/OSProject2
Last synced: about 1 month ago
JSON representation
- Host: GitHub
- URL: https://github.com/BugenZhao/OSProject2
- Owner: BugenZhao
- License: gpl-2.0
- Created: 2020-06-04T06:06:58.000Z (over 4 years ago)
- Default Branch: master
- Last Pushed: 2020-06-25T05:45:53.000Z (over 4 years ago)
- Last Synced: 2024-10-14T09:29:45.490Z (2 months ago)
- Language: C
- Size: 2.71 MB
- Stars: 1
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
- awesome-cs - @BugenZhao, 2020 Spring
README
# README for Project 2, CS356
## Personal Information
Ziqi Zhao (赵梓淇, Bugen Zhao, 518030910211), F1803302, CS, SEIEE, SJTU.
## Report
Please refer to [`Report.pdf`](./Report.pdf)
## Directory Structure
```bash
.
├── common
│ └── syscall_num.h # macro of syscall numbers
├── goldfish -> ~/Android/kernel/goldfish # symbolic link to the kernel
├── hacking # my hacking sources
│ ├── include
│ │ └── linux
│ │ └── bz_mm_limits.h # definition of global vars & helper funcs
│ ├── mm
│ │ ├── bz_mm_limits.c # body of helper funcs
│ │ ├── bz_oom_killer.c # the killer
│ │ ├── Makefile # added objects of new sources
│ │ └── page_alloc.c # added 2 loc to call the killer, at line 2448
│ └── Kconfig # added the killer as a feature
├── killer_test # my tester: correctness, race, performance, time
│ ├── jni
│ │ ├── Android.mk
│ │ └── killer_test.c
│ └── Makefile
├── mm_limit_syscall # syscall module: set, set_time, get
│ ├── Makefile
│ └── mm_limit_syscall.c
├── prj2_test # project tester
│ ├── jni
│ │ ├── Android.mk
│ │ └── prj2_test.c
│ └── Makefile
├── kernel_example.txt # example output of the killer in kernel
├── Makefile # Makefile for the project
├── output_testall.txt # output of 'make testall'
├── output_test.txt # output of 'make test'
├── Prj2+518030910211.tar # hand-in archive
└── Prj2README.md # this README
11 directories, 21 files
```
## Testscript
### Build the kernel
As you can see, the hacking sources to the kernel is all located at `hacking/`, which preserves the structure of the original kernel. I also make a symbolic link `goldfish` to the kernel. If you have the same structure as me, run `make rsync` to sync them, otherwise copy them manually to the kernel.
The killer is implemented as an **optional feature**, which requires you to run `make menuconfig` to enable it before building the kernel! Or the killer won't be built into the kernel.
### Run tests
All build and test commands are in `Makefile`. To run the test, you should determine some required arguments then execute the following commands. For more info about the variables, please refer to `Makefile`.
Please note that running the following tests will **overwrite** the output example in `output_test.txt` and `output_testall.txt`.
```bash
# Start the emulator
make emulator (AVD_NAME=xxx KERNEL_ZIMG=yyy)
# Build and run prj2_test
# It will also output in `output_test.txt`
make test (KID=xxx TOOLCHAIN=yyy)
# Build and run all tests, including my tester (may be slower)
# It will also output in `output_testall.txt`
make testall (KID=xxx TOOLCHAIN=yyy)
# Do some cleanup
make clean
```
### Output Examples
Please refer to `output_test.txt`, `output_testall.txt`, and `kernel_exmaple.txt` for the killer's output in kernel.