I am using C file IO to read value from a sysfs interface in linux. Path and sample value of the register is as follows: Code: Added after intel-rapl to take into account unknown escape sequence The code compiles without any error, but in the output file I am getting value as 0. Is this due to how I
Tag: sysfs
sysfs_create_group(): Where to call?
currently i write an driver module which offers some entries in the sysfs. I read a lot through the driver source tree and the internet. I found two approches where the sysfs_create_group() is called: a) most commonly: In the probe() function of the Driver. Like adviced here How to attach file operations to sysfs attribute in platform driver? Random Thing
How to create a simple sysfs class attribute in Linux kernel v3.2
I’m learning how to use sysfs in my Linux modules, but I’m having the hardest time finding current documentation on these topics. The Linux Device Drivers 3rd Edition book I’ve been using seems to be rather dated in this area unfortunately (e.g. the class_device structure appears to be completely gone in current Linux versions). I’m simply trying to get an