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2.5 Kernel Status Summary

[Posted October 9, 2002 by corbet]

From:  "Guillaume Boissiere" <boissiere@adiglobal.com>
To:  linux-kernel@vger.kernel.org
Subject:  [STATUS 2.5] October 9, 2002
Date:  Wed, 9 Oct 2002 12:05:28 -0400

The latest 2.5 status update is available at 
    http://www.kernelnewbies.org/status

Only 3 weeks left till Halloween, and still way to many 
items left on the list to be merged in that timeframe.

Come on, be real and tell me what to remove!  :-)

-- Guillaume


---------------------------------
Linux Kernel 2.5 Status - October 9th, 2002
(Latest kernel release is 2.5.41)

Items in bold have changed since last week.
Items in grey are post Halloween (feature freeze).

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 2.5.5  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)  
o in 2.5.7+  ACPI (Advanced Configuration & Power Interface)  (Andy Grover, ACPI team)  
o in 2.5.8  Syscall interface for CPU task affinity  (Robert Love)  
o in 2.5.8  Radix-tree pagecache  (Momchil Velikov, Christoph Hellwig)  
o in 2.5.9  Smarter IRQ balancing  (Ingo Molnar)  
o in 2.5.11  Replace old NTFS driver with NTFS TNG driver  (Anton Altaparmakov)  
o in 2.5.11  Fast walk dcache  (Hanna Linder)  
o in 2.5.11+  Rewrite of the framebuffer layer  (James Simmons)  
o in 2.5.12+  Rewrite of the buffer layer  (Andrew Morton)  
o in 2.5.14  Support for IDE TCQ (Tagged Command Queueing)  (Jens Axboe)  
o in 2.5.14  Bluetooth support (no longer experimental!)  (Maxim Krasnyansky, Bluetooth team)  
o in 2.5.17  New quota system supporting plugins  (Jan Kara)  
o in 2.5.17+  Move ISDN4Linux to CAPI based interface  (Kai Germaschewski, ISDN4Linux team)  
o in 2.5.18  Software suspend (to disk & RAM)  (Pavel Machek)  
o in 2.5.23  More complete IEEE 802.2 stack  (Arnaldo, Jay Schullist, from Procom donated code)  
o in 2.5.23+  Hotplug CPU support  (Rusty Russell)  
o in 2.5.25  Faster internal kernel clock frequency  (Linus Torvalds)  
o in 2.5.26  Direct pagecache <-> BIO disk I/O  (Andrew Morton)  
o in 2.5.27+  New VM with reverse mappings  (Rik van Riel)  
o in 2.5.28+  Serial driver restructure  (Russell King)  
o in 2.5.28  Remove the "Big IRQ lock"  (Ingo Molnar)  
o in 2.5.29+  Thread-Local Storage (TLS) support  (Ingo Molnar)  
o in 2.5.29+  Add Linux Security Module (LSM)  (LSM team)  
o in 2.5.29+  Strict address space accounting  (Alan Cox)  
o in 2.5.31+  Disk description cleanups  (Al Viro)  
o in 2.5.31  Support insane number of processes  (Linus Torvalds)  
o in 2.5.32  New MTRR (Memory Type Range Register) driver  (Patrick Mochel)  
o in 2.5.32+  Porting all input devices over to input API  (Vojtech Pavlik, James Simmons)  
o in 2.5.32+    Asynchronous IO (aio) support  (Ben LaHaise)  
o in 2.5.32+  Add support for NFS v4  (NFS v4 team)  
o in 2.5.32+  Improved POSIX threading support  (Ingo Molnar)  
o in 2.5.33  SCTP (Stream Control Transmission Protocol)  (lksctp team)  
o in 2.5.33  TCP segmentation offload  (Alexey Kuznetsov)  
o in 2.5.34  discontigmem support (ia32)  (Pat Gaughen, Martin Bligh, Jack Steiner, Tony Luck)  
o in 2.5.34  POSIX threading support for signals  (Ingo Molnar)  
o in 2.5.35  Add User-Mode Linux (UML)  (Jeff Dike)  
o in 2.5.36  Add XFS (A journaling filesystem from SGI)  (XFS team)  
o in 2.5.39  New IO scheduler  (Jens Axboe)  
o in 2.5.40  Add support for CPU clock/voltage scaling  (Dominik Brodowski, Erik Mouw, Dave Jones, Russell King, Arjan van 
de Ven)  
o in 2.5.40  NUMA topology support  (Matt Dobson)  
o in 2.5.42  Improved i2o (Intelligent Input/Ouput) layer  (Alan Cox)  

 
o in -dj  Rewrite of the console layer  (James Simmons)  
o in -ac  PCMCIA Zoom video support  (Alan Cox)  
o in -mm  Read-Copy Update (RCU) Mutual Exclusion  (Dipankar Sarma, Rusty Russell, Andrea Arcangeli, LSE Team)  
o in -mm  VM large page support  (Many people)  

 
o Ready  Build option for Linux Trace Toolkit (LTT)  (Karim Yaghmour)  
o Ready  Remove the 2TB block device limit  (Peter Chubb)  
o Ready  Serial ATA support  (Andre Hedrick)  
o Ready  Dynamic Probes  (dprobes team)  
o Ready  Zerocopy NFS  (Hirokazu Takahashi)  
o Ready  High resolution timers  (George Anzinger, etc.)  
o Ready  ext2/ext3 large directory support: HTree index  (Daniel Phillips, Christopher Li, Andrew Morton, Ted Ts'o)  
o Ready  EVMS (Enterprise Volume Management System)  (EVMS team)  
o Ready  Add new CIFS (Common Internet File System)  (Steve French)  

 
o Beta  Device mapper for Logical Volume Manager (LVM2)  (LVM team)  
o Beta  Full compliance with IPv6  (Alexey Kuznetsov, Jun Murai, Yoshifuji Hideaki, USAGI team)  
o Beta  Page table sharing  (Daniel Phillips, Dave McCracken)  
o Beta  ext2/ext3 online resize support  (Andreas Dilger)  
o Beta  UDF Write support for CD-R/RW (packet writing)  (Jens Axboe, Peter Osterlund)  
o Beta  Better event logging for enterprise systems  (Larry Kessler, evlog team)  
o Beta  Add hardware sensors drivers  (lm_sensors team)  
o Beta  New Linux configuration system  (Roman Zippel)  
o Beta  Per-mountpoint read-only, union-mounts, unionfs  (Al Viro)  
o Beta  More complete NetBEUI stack  (Arnaldo Carvalho de Melo, from Procom donated code)  
o Beta  Plug'N Play Layer Rewrite  (Adam Belay)  

 
o Alpha  Scalable Statistics Counter  (Ravikiran Thirumalai)  
o Alpha  Linux Kernel Crash Dumps  (Matt Robinson, LKCD team)  
o Alpha  Change all drivers to new driver model  (All maintainers)  
o Alpha  NUMA aware scheduler extensions  (Erich Focht)  
o Alpha  Basic NUMA API  (Matt Dobson)  
o Alpha  Non-linear memory support  (Martin Bligh, Daniel Phillips)  
o Alpha  Remove waitqueue heads from kernel structures  (William Lee Irwin)  
o Alpha  New lightweight library (klibc)  (H. Peter Anvin)  
o Alpha  Reiserfs v4  (Reiserfs team)  
o Alpha  Replace initrd by initramfs  (H. Peter Anvin, Al Viro)  
o Alpha  Fix device naming issues  (Patrick Mochel, Greg Kroah-Hartman)  
o Alpha  Page table reclamation  (William Lee Irwin, Rik Van Riel)  
o Alpha  UMSDOS (Unix under MS-DOS) Rewrite  (Al Viro)  
o Alpha  USB gadget support  (Stuart Lynne, Greg Kroah-Hartman)  

 
o Started  Make AppleTalk use shared skbs and refcounting  (Arnaldo Carvalho de Melo)  
o Started  NUMA aware slab allocator  (Martin Bligh)  
o Started  x86 BIOS Enhanced Disk Device (EDD) polling  (Matt Domsch)  
o Started  SCSI multipath IO (with NUMA support)  (Patrick Mansfield, Mike Anderson)  
o Started  Overhaul PCMCIA support  (David Woodhouse, David Hinds)  
o Started  InfiniBand support  (InfiniBand team)  

 
o Planning  New mount API  (Al Viro)  
o Planning  Add thrashing control  (Rik van Riel)  
o Planning  Remove all hardwired drivers from kernel  (Alan Cox, etc.)  


 
Cleanups:  
 
Merged  
o in 2.5.3  Break Configure.help into multiple files  (Linus Torvalds)  
o in 2.5.3  Untangle sched.h & fs.h include 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 in 2.5.18+  ->getattr() ->setattr() ->permission() changes  (Al Viro)  
o in 2.5.21  Split up x86 setup.c into managable pieces  (Patrick Mochel)  
o in 2.5.23+  Major MD tool (RAID 5) cleanup  (Neil Brown)  
o in 2.5.31  Rework datalink protocols to not use cli/sti  (Arnaldo Carvalho de Melo)  
o in 2.5.31  Remove incomplete SPX network stack  (Arnaldo Carvalho de Melo)  

 
o Beta  Remove dcache_lock  (Maneesh Soni, IBM team)  

 
o Ready  Switch to ->get_super() for file_system_type  (Al Viro)  

 
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  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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2.5 Kernel Status Summary

Posted Oct 9, 2002 20:25 UTC (Wed) by captrb (subscriber, #2291) [Link]

2.5 seems to be shaping up quite nicely. I've tried 2.5.41 and it "feels" significantly faster, though I haven't attempted any serious benchmarks. Starting heavy gui apps like mozilla takes noticably less time. Somebody has probably performed some more accurate testing. I'd would be interesting to see some database benchmarks.

NGPT, the io changes, the cleaned up rev-map vm, and the preemption changes seem the most exciting (though that may be "understandable" in my case). The cpu clock scaling would probably be more exciting to me if I used a laptop, but I wouldn't mind having my cpu and fans cooled down sometimes to get rid of the noisy gale-force wind that whips out my case vents ;-)

2.5 Kernel Status Summary

Posted Oct 9, 2002 21:35 UTC (Wed) by alan (subscriber, #4018) [Link]


I think 2.5 will feel still faster, with the new thread library as many gui apps and elements are heavily threaded, like mozilla, and kde.

The desktop experience should be much improved.

-alan

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