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A loadable kernel module (LKM) is an executable library that extends the capabilities of a running kernel, or so-called base kernel, of an operating system. LKMs are typically used to add support for new hardware (as device drivers ) and/or filesystems , or for adding system calls .
lsmod is a command on Linux systems that lists each loadable kernel module that is loaded.. Example output from lsmod: . Module Size Used by af_packet 27392 2 8139too 30592 0 snd_cs46xx 96872 3 snd_pcm_oss 55808 1 snd_mixer_oss 21760 2 snd_pcm_oss ip6table_filter 7424 1 ip6_tables 19728 1 ip6table_filter ipv6 290404 22 xfs 568384 4 sis900 18052 5 libata 169920 1 pata_sis scsi_mod 158316 3 usb ...
The character between the address and the symbol (separated by spaces) is the type of a symbol. The nm utility program on Unix systems lists the symbols from object files. The System.map is directly related to it, in that this file is produced by nm on the whole kernel program – just like nm lists the symbols and their types for any small object programs.
And how exactly are Windows's loadable kernel drivers different from LKM? The fact that Windows doesn't call them "kernel modules" doesn't mean it doesn't have a similar concept. Another data point, the OS X XNU kernel claims to be a hybrid kernel and supports kernel modules just as well.-- intgr 10:44, 5 May 2013 (UTC) Exactly.
This differs from absolute code, [1] which must be loaded at a specific location to function correctly, [1] and load-time locatable (LTL) code, [1] in which a linker or program loader modifies a program before execution, so it can be run only from a particular memory location. [1]
Navigate through the kernel features and menuconfig commands. Esc+Esc: Exit menuconfig or cancel the command. ↵ Enter: Activate a command, or expand a branch. y: Compile and include this feature inside of the kernel. m: Compile this feature as a module, separate from the kernel. n: Do not compile the feature. / Search configuration parameter.
A NetWare Loadable Module [1] [2] [3] (NLM) is a loadable kernel module (a binary code module) that can be loaded into Novell's NetWare operating system. NLMs can implement hardware drivers, server functions (e.g. clustering), applications (e.g. GroupWise), system libraries or utilities.
Note that completion ports notify when a requested operation has completed, whereas kqueue can also notify when a file descriptor is ready to perform an I/O operation. on Linux: epoll system call has similar but not identical semantics. inotify is a Linux kernel subsystem that notices changes to the filesystem and reports those to applications.