NetBSD

History

pooka db3f366798 Shuffle the pagedaemon algorithm a bit to record the number of pageouts active and give up only if the pagedaemon could not free memory and there are no outstanding pageouts. This should fix the "out of memory" pauses reported by Mihai Chelaru and Taylor R Campbell. Tested by copying files to and from an ffs backed by /dev/wd0 (with and without -o log) using a 1MB rump kernel memory limit.		2011-02-22 20:17:37 +00:00
..
dev	enable this for amd64 too.	2011-01-31 00:10:06 +00:00
fs	no longer used	2011-01-21 13:11:32 +00:00
include	omstart	2011-02-22 14:09:35 +00:00
kern	Add support for compiling ZFS and Solaris modules as RUMP libraries. Add	2011-01-18 22:21:22 +00:00
librump	Shuffle the pagedaemon algorithm a bit to record the number of	2011-02-22 20:17:37 +00:00
net	attach the compat_50_routedomain to make it actually work	2011-02-04 09:57:53 +00:00
ldscript.rump	Introduce RUMP_COMPONENT. It behaves mostly like a simplified	2010-03-01 13:12:19 +00:00
Makefile	Add infrastructure for kern compnents. This is meant for those	2010-06-10 21:56:42 +00:00
Makefile.rump	Define COMPAT_50 to be 1 just like config(8) would be opt_compat_netbsd.h	2011-02-01 01:15:51 +00:00
README.dirs	update slightly	2010-05-11 11:58:14 +00:00
TODO	update todo from my private collection (which is now empty)	2011-02-01 15:26:46 +00:00

README.dirs

	$NetBSD: README.dirs,v 1.11 2010/05/11 11:58:14 pooka Exp $


The following is a quick rundown of the current directory structure.
First, components in the kernel namespace, i.e. compiled with -D_KERNEL

sys/rump/librump - kernel runtime emulation
  /rumpkern	- kernel core, e.g. syscall, interrupt and lock support

  /rumpcrypto	- kernel cryptographic routines
  /rumpdev	- device support, e.g. autoconf subsystem
  /rumpnet	- networking support and sockets layer
  /rumpvfs	- file system support

sys/rump/include
  /machine - used for architectures where the rump ABI is not yet the
	     same as the kernel module ABI.  will eventually disappear
	     completely
  /rump    - rump headers installed to userspace

sys/rump/dev - device components, e.g. audio, raidframe, usb drivers

sys/rump/fs - file system components
  /lib/lib${fs}  - kernel file system code

sys/rump/net - networking components
  /lib/libnet	  - subroutines from sys/net, e.g. route and if_ethersubr
  /lib/libnetinet - TCP/IP
  /lib/libvirtif  - a virtual interface which uses host tap(4) to shovel
		    packets.  This is used by netinet and if_ethersubr.
  /lib/libsockin  - implements PF_INET using host kernel sockets.  This is
		    mutually exclusive with net, netinet and virtif.



The rest are out-of-kernel components (i.e. no -D_KERNEL)
related to rump.

hypercall interface:
src/lib/librumpuser
  The "rumpuser" set of interfaces is used by rump to communicate
  with the host.

Users:
src/lib
  /libp2k  - puffs-to-vfs adaption layer, userspace namespace
  /libukfs - user kernel file system, a library to access file system
	     images (or devices) directly in userspace without going
	     through a system call and puffs.  It provides a slightly
	     higher interface than pure rump syscalls.

src/usr.sbin/puffs
  rump_$fs - userspace file system daemons using the kernel fs code

src/share/examples/rump
  Various examples detailing use of rump in different scenarios.
  These are provided source-only.