Where is modprobe conf?

/etc/modprobe
conf, all config files belong into /etc/modprobe.

What is modprobe D?

This command allows you to add options to the module modulename (which might be an alias) every time it is inserted into the kernel: whether directly (using modprobe modulename) or because the module being inserted depends on this module.

What is Module_param?

module_param(name, type, perm); where name is the name of both the parameter exposed to the user and the variable holding the parameter inside your module. The type argument holds the parameter’s data type; it is one of byte, short, ushort, int, uint, long, ulong, charp, bool, or invbool.

What does Lsmod do in Linux?

lsmod is a command on Linux systems. It shows which loadable kernel modules are currently loaded. “Module” denotes the name of the module. “Size” denotes the size of the module (not memory used) in Bytes.

What is the difference between Insmod and modprobe?

insmod is similar to modprobe: it can insert a module into the Linux kernel. Unlike modprobe, however, insmod does not read its modules from a set location, automatically insert them, and manage any dependencies. insmod can insert a single module from any location, and does not consider dependencies when doing so.

What does modprobe Conf do?

This command allows you to add options to the module modulename (which might be an alias) every time it is inserted into the kernel: whether directly (using modprobe modulename or because the module being inserted depends on this module.

What is S_irugo?

S_IRUGO|S_IWUSR allows root to change the parameter. Note that if a parameter is changed by sysfs, the value of that parameter as seen by your module changes, but your module is not notified in any other way.

What is sysfs in Linux?

sysfs is a pseudo file system provided by the Linux kernel that exports information about various kernel subsystems, hardware devices, and associated device drivers from the kernel’s device model to user space through virtual files.