This is operating system's homework 1, we write a kernel module to get following basic information and build a proc file in /proc/my_info
- Version: Linux version
- CPU:
- processor, model name, physical id, core id, cpu cores, cache size, clflush size, cache_alignment, address sizes
- Memory:
- Memtotal, Memfree, Buffers, Activate, Inactivate, Shmem, Dirty, Writeback, KernelStack, PageTables
- Time:
- Uptime, Idletime
We also have an interface to show these info, which only get data from proc file build by self.
This assignment was done on linux 4.15.0
- Build and install module
make
- Delete other file except source code
make clean
- Compile module
make mod
- Compile app
make app
- Install module
make ins_mod
- Remove module
make rm_mod
- Delete app
make del_app
- Delete module
make del_mod
- execute app
./app
Which information do you want?Which information do you want?
Version(v),CPU(c\),Memory(m),Time(t),All(a),Exit(e)?
v
Version: Linux version 4.15.0-72-generic
------------------------------------------------------------
Which information do you want?
Version(v),CPU(c\),Memory(m),Time(t),All(a),Exit(e)?
a
=============Version=============
Linux version 4.15.0-72-generic
=============CPU=============
processor : 0
model name : Intel(R) Core(TM) i7-4510U CPU @ 2.00GHz
physical id : 0
core id : 0
cpu cores : 2
cache size : 4096 KB
clflush size : 64
cache_alignment : 64
address sizes : 39 bits physical, 48 bits virtual
processor : 1
model name : Intel(R) Core(TM) i7-4510U CPU @ 2.00GHz
physical id : 0
core id : 1
cpu cores : 2
cache size : 4096 KB
clflush size : 64
cache_alignment : 64
address sizes : 39 bits physical, 48 bits virtual
=============Memory=============
MemTotal : 1008948 kB
MemFree : 335496 kB
Buffers : 24048 kB
Active : 332384 kB
Inactive : 192888 kB
Shmem : 15732 kB
Dirty : 532 kB
Writeback : 0 kB
KernelStack : 7136 kB
PageTables : 31112 kB
=============Time=============
Uptime : 37597.24(s)
Idletime : 68581.15(s)
------------------------------------------------------------
Which information do you want?
Version(v),CPU(c\),Memory(m),Time(t),All(a),Exit(e)?
e
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