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Implemented task07 with procfs module entries #114

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Implemented task07 with procfs module entries #114

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72ce05e
task07:implemented procfs module entries
ValentiWorkLearning Dec 10, 2021
5d8efc1
task07:applied clangformat to the procfs_module.c
ValentiWorkLearning Dec 10, 2021
de031e8
task07:added orangepi building logs
ValentiWorkLearning Dec 10, 2021
0ee0828
Merge branch 'Valentyn.Korniienko' into Valentyn.Korniienko_task07
ValentiWorkLearning Jan 15, 2022
b3d6aed
task07: added cross-compilation support to the module
ValentiWorkLearning Jan 26, 2022
6a72a8f
task07:moved test script to a separate file
ValentiWorkLearning Jan 26, 2022
7c19251
task07:added launch logs
ValentiWorkLearning Jan 26, 2022
d266e83
task07:moved comments from the module to README
ValentiWorkLearning Jan 26, 2022
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12 changes: 12 additions & 0 deletions 07_procfs/07_module_test.sh
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Original file line number Diff line number Diff line change
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dmesg -c
insmod procfs_module.ko
echo "123456" > /sys/kernel/basic_struct/list
cat /sys/kernel/basic_struct/list
echo "1234567890263321564654654654679874964321356" > /sys/kernel/basic_struct/list
echo "Hello world!" > /sys/kernel/basic_struct/list
cat /sys/kernel/basic_struct/list
cat /proc/task07_module_entries/module_author
cat /proc/task07_module_entries/write_requests
cat /proc/task07_module_entries/read_requests
rmmod procfs_module.ko
dmesg
12 changes: 12 additions & 0 deletions 07_procfs/Makefile
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KERNELDIR ?=/home/valenti/Development/Embedded/exercise8/build_orange_zero_image/build/linux-5.10.10/

ifneq ($(KERNELRELEASE),)
obj-m := procfs_module.o
else

all:
$(MAKE) CFLAGS_MODULE="-DDEBUG " -C $(KERNELDIR) M=$(PWD) modules
clean:
$(MAKE) -C $(KERNELDIR) M=$(PWD) clean
endif
6 changes: 6 additions & 0 deletions 07_procfs/README.md
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Expand Up @@ -8,3 +8,9 @@
* Build image for orange pi zero
* Attach console output from your development board


Reference links:
https://elixir.bootlin.com/linux/latest/source/samples/kobject/kobject-example.c#L131
https://elixir.bootlin.com/linux/latest/source/drivers/char/ds1620.c#L396
https://elixir.bootlin.com/linux/latest/source/drivers/staging/rtl8192u/r8192U_core.c#L602
https://elixir.bootlin.com/linux/latest/source/drivers/macintosh/via-pmu.c#L555
22 changes: 22 additions & 0 deletions 07_procfs/module_test.txt
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$ sh 07_module_test.sh
[ 310.840684] ==BASIC_STRUCT==:Called list_store with count:7
[ 310.845063] ==BASIC_STRUCT==:Called list_show with copied pointer_offset:7
[ 310.845773] ==BASIC_STRUCT==:Called list_store with count:44
[ 310.845917] ==BASIC_STRUCT==:Called list_store with count:13
[ 310.850309] ==BASIC_STRUCT==:Called list_show with copied pointer_offset:64
[ 310.874785] ==BASIC_STRUCT==:Module unloaded
123456
123456
1234567890263321564654654654679874964321356
Hello world!
Module author: Valentyn Korniienko <[email protected]>
Write requests: 3
Read requests: 2
[ 340.970209] ==BASIC_STRUCT==:Module ready
[ 340.971201] ==BASIC_STRUCT==:Called list_store with count:7
[ 340.975731] ==BASIC_STRUCT==:Called list_show with copied pointer_offset:7
[ 340.976451] ==BASIC_STRUCT==:Called list_store with count:44
[ 340.976597] ==BASIC_STRUCT==:Called list_store with count:13
[ 340.990634] ==BASIC_STRUCT==:Called list_show with copied pointer_offset:64
[ 341.006856] ==BASIC_STRUCT==:Module unloaded
$
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