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Poul-Henning Kamp f6bde1fd05 Add a new API for allocating unit number (-like) resources. 
Allocation is always lowest free unit number.

A mixed range/bitmap strategy for maximum memory efficiency.  In
the typical case where no unit numbers are freed total memory usage
is 56 bytes on i386.

malloc is called M_WAITOK but no locking is provided (yet).  A bit of
experience will be necessary to determine the best strategy.  Hopefully
a "caller provides locking" strategy can be maintained, but that may
require use of M_NOWAIT allocation and failure handling.

A userland test driver is included.
2004-09-30 07:04:03 +00:00
..
alpha - Add support for "paging" in stack trace output. That is, when you do 2004-09-20 19:05:32 +00:00
amd64 Prevent the unexpected deallocation of a page table page while performing 2004-09-29 19:20:40 +00:00
arm Calling fuword from fuword32 with bl and without returning after is really a bad 2004-09-28 14:39:26 +00:00
boot Fixed exiting from pager using the `q' key while paging 2004-09-29 13:43:55 +00:00
cam For removable devices without media we set a zero mediasize but a non-zero 2004-09-05 21:15:58 +00:00
coda Do not use devsw() but si_devsw direction. This is still bogus but a 2004-09-23 12:19:24 +00:00
compat Add a proc *p pointer for td->td_proc to make this code easier to read. 2004-09-24 20:26:15 +00:00
conf Add a new API for allocating unit number (-like) resources. 2004-09-30 07:04:03 +00:00
contrib Add an additional struct inpcb * argument to pfil(9) in order to enable 2004-09-29 04:54:33 +00:00
crypto Use __FBSDID(). 2004-06-14 00:38:54 +00:00
ddb Refactor a bunch of scheduler code to give basically the same behaviour 2004-09-05 02:09:54 +00:00
dev Remove extra */ 2004-09-30 02:13:42 +00:00
doc Experimental support for using doxygen to generate kernel documentation. 2004-07-11 16:13:57 +00:00
fs XXX mark two places where we do not hold a threadcount on the dev when 2004-09-24 08:32:36 +00:00
gdb Comment-out the debugging printf I left in in case there were some 2004-08-10 19:32:33 +00:00
geom Protect the start/end counts on consumers and providers with the up/down 2004-09-28 11:56:37 +00:00
gnu Desupport device nodes on EXT2 filesystems. 2004-09-27 20:38:46 +00:00
i4b Kill count device support from config. I've changed the last few 2004-08-30 23:03:58 +00:00
i386 Prevent the unexpected deallocation of a page table page while performing 2004-09-29 19:20:40 +00:00
ia64 ...And fix WITNESS builds: declare syscallnames. 2004-09-26 20:39:56 +00:00
isa Introduce a tunable to disable support for Synaptics touchpads. A number of 2004-09-29 23:49:57 +00:00
isofs/cd9660 Hold proper thread count while frobbing drivers ioctl. 2004-09-24 07:24:02 +00:00
kern Add a new API for allocating unit number (-like) resources. 2004-09-30 07:04:03 +00:00
libkern Move the kernel-specific logic to adjust frompc from MI to MD. For 2004-08-27 19:42:35 +00:00
modules Add the memrange bits to the loadable module. 2004-09-28 07:26:00 +00:00
net Add an additional struct inpcb * argument to pfil(9) in order to enable 2004-09-29 04:54:33 +00:00
net80211 Add a new network interface flag, IFF_NEEDSGIANT, which will allow 2004-07-27 23:20:45 +00:00
netatalk Inline umich license from COPYRIGHT to make it clear what license the 2004-08-10 03:23:05 +00:00
netatm Avoid casts as lvalues. 2004-07-28 06:59:55 +00:00
netgraph Fix an issue with ng_tty which (ab)used the tty->t_sc field which is 2004-09-17 22:26:27 +00:00
netinet Add an additional struct inpcb * argument to pfil(9) in order to enable 2004-09-29 04:54:33 +00:00
netinet6 Add an additional struct inpcb * argument to pfil(9) in order to enable 2004-09-29 04:54:33 +00:00
netipsec Add missing locking for secpolicy refcnt manipulations. 2004-09-30 01:08:02 +00:00
netipx Mark Netgraph TTY, KAME IPSEC, and IPX/SPX as requiring Giant for correct 2004-08-28 15:24:53 +00:00
netkey Merge netipsec/key.c:1.17 into KAME pfkey implementation: 2004-09-30 00:49:55 +00:00
netnatm Constify send and receive space constants in natm. 2004-06-24 03:11:29 +00:00
netncp Do the dreaded s/dev_t/struct cdev */ 2004-06-16 09:47:26 +00:00
netsmb Avoid casts as lvalues. 2004-07-28 06:59:55 +00:00
nfs Remove advertising clause from University of California Regent's 2004-04-07 05:00:01 +00:00
nfs4client Remove NFS4 vop method vector for devices: we are desupporing device nodes 2004-09-27 20:02:50 +00:00
nfsclient Remove support for using NFS device nodes. 2004-09-28 08:50:01 +00:00
nfsserver Convert a mtx_lock(&Giant) to a mtx_unlock(&Giant) in nfsrv_link() to 2004-08-25 16:52:59 +00:00
opencrypto Don't acquire Giant in cryptof_close(), as the code is intended to be 2004-08-10 03:26:17 +00:00
pc98 Merged from sys/dev/sio/sio.c: more tty related changes. 2004-09-20 14:01:38 +00:00
pccard Move PNP IDs back into oldcard files 2004-08-13 06:57:31 +00:00
pci fix jumbo frames as much as they can be fixed for re. We now cap the MTU 2004-09-28 18:22:24 +00:00
posix4
powerpc Add sc_iostart to softc and unbreak the build. 2004-09-27 19:51:58 +00:00
rpc Prefer C99's __func__ over GCC's __FUNCTION__. 2004-09-23 18:25:46 +00:00
security Remove the debugging tunable, it was not being used. 2004-09-10 15:14:50 +00:00
sparc64 We seem to have occasions where sending an IPI takes significantly 2004-09-29 21:39:36 +00:00
sys Add a new API for allocating unit number (-like) resources. 2004-09-30 07:04:03 +00:00
tools Pass doxygen doc comments through to the output. 2004-07-11 16:14:24 +00:00
ufs Remove support for accessing device nodes in UFS/FFS. 2004-09-28 13:30:58 +00:00
vm Don't look for swap blocks in objects that aren't swap-backed. 2004-09-24 16:04:20 +00:00
Makefile Add a NO_BOOT knob to prevent building the boot blocks and loader. 2004-08-19 09:54:28 +00:00