Of note since last week is the merge of NAPI, which is a way
to deal with high network packet load -- networking drivers
authors may want to take a look at the porting guide.
Also merged is a big ACPI patch, which should pave the way
for better power management in Linux.
As usual, please let me know of anything incorrect or missing.
Cheers,
-- Guillaume
------------------------------------------
Kernel 2.5 status - March 20th, 2002
(Latest kernel release is 2.5.7)
Features:
Merged
o in 2.5.1+ Rewrite of the block IO (bio) layer (Jens Axboe)
o in 2.5.2 Initial support for USB 2.0 (David
Brownell, Greg Kroah-Hartman, etc.)
o in 2.5.2 Per-process namespaces, late-boot cleanups (Al Viro,
Manfred Spraul)
o in 2.5.2+ New scheduler for improved scalability (Ingo Molnar)
o in 2.5.2+ New kernel device structure (kdev_t) (Linus
Torvalds, etc.)
o in 2.5.3 IDE layer update (Andre
Hedrick)
o in 2.5.3 Support reiserfs external journal (Reiserfs
team)
o in 2.5.3 Generic ACL (Access Control List) support (Nathan Scott)
o in 2.5.3 PnP BIOS driver (Alan Cox,
Thomas Hood, Dave Jones, etc.)
o in 2.5.3+ New driver model & unified device tree (Patrick
Mochel)
o in 2.5.4 Add preempt kernel option (Robert Love,
MontaVista team)
o in 2.5.4 Support for Next Generation POSIX Threading (NGPT team)
o in 2.5.4+ Porting all input devices over to input API (Vojtech
Pavlik, James Simmons)
o in 2.5.5 Add ALSA (Advanced Linux Sound Architecture) (ALSA team)
o in 2.5.5 Pagetables in highmem support (Ingo Molnar,
Arjan van de Ven)
o in 2.5.5 New architecture: AMD 64-bit (x86-64) (Andi Kleen,
x86-64 Linux team)
o in 2.5.5 New architecture: PowerPC 64-bit (ppc64) (Anton
Blanchard, ppc64 team)
o in 2.5.6 Add JFS (Journaling FileSystem from IBM) (JFS team)
o in 2.5.6 per_cpu infrastructure (Rusty
Russell)
o in 2.5.6 HDLC (High-level Data Link Control) update (Krzysztof
Halasa)
o in 2.5.6 smbfs Unicode and large file support (Urban
Widmark)
o in 2.5.7 New driver API for Wireless Extensions (Jean
Tourrilhes)
o in 2.5.7 Video for Linux (V4L) redesign (Gerd Knorr)
o in 2.5.7 Futexes (Fast Lightweight Userspace Semaphores) (Rusty
Russell, etc.)
o in 2.5.7+ NAPI network interrupt mitigation (Jamal Hadi
Salim, Robert Olsson, Alexey Kuznetsov)
* in 2.5.7+ ACPI (Advanced Configuration & Power Interface) (Andy Grover,
ACPI team)
o Pending Finalize new device naming convention (Linus
Torvalds)
o in -dj Rewrite of the framebuffer layer (James
Simmons)
* in -ac Strict address space accounting (Alan Cox)
* in -ac PCMCIA Zoom video support (Alan Cox)
o Ready Add hardware sensors drivers (lm_sensors
team)
o Ready New kernel config system: CML2 (Eric Raymond)
o Ready Read-Copy Update Mutual Exclusion (Dipankar
Sarma, Rusty Russell, Andrea Arcangeli, LSE Team)
o Ready Better event logging for enterprise systems (Larry
Kessler, evlog team)
o Ready New quota system supporting plugins (Jan Kara)
o Beta New kernel build system (kbuild 2.5) (Keith Owens)
o Beta Add support for CPU clock/voltage scaling (Erik Mouw,
Dave Jones, Russell King, Arjan van de Ven)
o Beta Serial driver restructure (Russell King)
o Beta New IO scheduler (Jens Axboe)
o Beta Add XFS (A journaling filesystem from SGI) (XFS team)
o Beta New VM with reverse mappings (Rik van Riel)
o Beta Fix long-held locks for low scheduling latency (Andrew
Morton, Robert Love, etc.)
o Beta Build option for Linux Trace Toolkit (LTT) (Karim
Yaghmour)
o Beta Add Linux Security Module (LSM) (LSM team)
o Beta Hotplug CPU support (Rusty
Russell)
o Beta Per-mountpoint read-only, union-mounts, unionfs (Al Viro)
o Beta EVMS (Enterprise Volume Management System) (EVMS team)
o Beta LVM (Logical Volume Manager) v2.0 (LVM team)
o Beta Linux booting ELF images (Eric
Biederman)
o Beta First pass at LinuxBIOS support (Eric
Biederman)
o Beta Dynamic Probes (Suparna
Bhattacharya, dprobes team)
o Beta Scalable CPU bitmasks (Russ Weight)
o Beta Page table sharing (Daniel
Phillips)
o Beta Rewrite of the console layer (James
Simmons)
o Beta ext2/ext3 online resize support (Andreas
Dilger)
o Beta Radix-tree pagecache (Momchil
Velikov, Christoph Hellwig)
o Beta Replace old NTFS driver with NTFS TNG driver (Anton
Altaparmakov)
o Beta Fast walk dcache (Hanna Linder)
o Beta Add User-Mode Linux (UML) (Jeff Dike)
o Alpha Better support of high-end NUMA machines (NUMA team)
o Alpha Add Asynchronous IO (aio) support (Ben LaHaise)
o Alpha Overhaul PCMCIA support (David
Woodhouse, David Hinds)
o Alpha More complete IEEE 802.2 stack (Arnaldo, Jay
Schullist, from Procom donated code)
o Alpha Full compliance with IPv6 (Alexey
Kuznetzov, Jun Murai, Yoshifuji Hideaki, USAGI team)
o Alpha UMSDOS (Unix under MS-DOS) Rewrite (Al Viro)
o Alpha Scalable Statistics Counter (Ravikiran
Thirumalai)
o Alpha Linux Kernel Crash Dumps (Matt
Robinson, LKCD team)
o Alpha Add support for NFS v4 (NFS v4 team)
o Alpha ext2/ext3 large directory support: HTree index (Daniel
Phillips, Christopher Li, Ted Ts'o)
o Alpha Delayed disk block allocation (Andrew
Morton)
* Alpha Improved i2o (Intelligent Input/Ouput) layer (Alan Cox)
o Started More complete NetBEUI stack (Arnaldo
Carvalho de Melo, from Procom donated code)
o Started Remove use of the BKL (Big Kernel Lock) (Alan Cox,
Robert Love, Neil Brown, etc.)
o Started Change all drivers to new driver model (All
maintainers)
o Started Reiserfs v4 (Reiserfs
team)
o Started Move ISDN4Linux to CAPI based interface (ISDN4Linux
team)
o Draft #2 New lightweight library (klibc) (Greg Kroah-
Hartman)
o Draft #3 Replace initrd by initramfs (H. Peter
Anvin, Al Viro)
o Planning Add thrashing control (Rik van Riel)
o Planning Remove all hardwired drivers from kernel (Alan Cox,
etc.)
o Planning Generic parameter/command line interface (Keith Owens)
o Planning New mount API (Al Viro)
o Planning New MTRR (Memory Type Range Register) driver (Dave Jones)
Cleanups:
Merged
o in 2.5.3 Break Configure.help into multiple files (Linus
Torvalds)
o in 2.5.3 Untangle include file dependancies (Dave Jones,
Roman Zippel)
o in 2.5.4 Per network protocol slabcache & sock.h (Arnaldo
Carvalho de Melo)
o in 2.5.4 Per filesystem slabcache & fs.h (Daniel
Phillips, Jeff Garzik, Al Viro)
o in 2.5.6 Killing kdev_t for block devices (Al Viro)
o Ready Switch to ->get_super() for file_system_type (Al Viro)
o Ready ->getattr() ->setattr() ->permission() changes (Al Viro)
o Ready Remove dcache_lock (Maneesh
Soni, IBM team)
o Beta file.h and INIT_TASK (Benjamin
LaHaise)
o Beta Proper UFS fixes, ext2 and locking cleanups (Al Viro)
o Beta Lifting limitations on mount(2) (Al Viro)
o Started Split up x86 setup.c into managable pieces (Dave Jones,
Randy Dunlap)
o Started Reorder x86 initialization (Dave Jones,
Randy Dunlap)
Have some free time and want to help? Check out the Kernel Janitor
TO DO list for a list of source code cleanups you can work on.
A great place to start learning more about kernel internals!
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