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Clarify a couple of entries in the system roadmap

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agc 2009-09-21 19:41:23 +00:00
parent 5fde6173c5
commit 59e2dec966
1 changed files with 21 additions and 14 deletions
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doc/roadmaps/system
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@ -1,4 +1,4 @@
$NetBSD: system,v 1.6 2009/09/15 21:07:58 agc Exp $
$NetBSD: system,v 1.7 2009/09/21 19:41:23 agc Exp $
NetBSD System Roadmap
=====================
@ -33,7 +33,8 @@ Some explanations
The Unix 32-bit time_t value will overflow in 2037 - any mortgage calculations
which use a time_t value are in danger of overflowing at the present time -
and to address this, 64-bit time_t values will be used to contain the number
of seconds since 1970.
of seconds since 1970. This was completed in 5.99.7 by Christos (with no libc
major bump - kudos and respect), and will be in 6.0.
Responsible: christos
@ -49,13 +50,17 @@ using modules.
Responsible: ad, lukem
3. Full kernel preemption for real-time threads
-----------------------------------------------
3. Full kernel preemption for real-time threads on non-x86
----------------------------------------------------------
With the revamp of the kernel concurrency model, much of the kernel is fully
multi-threaded and can therefore be preempted at any time. In support of
lower context switch and dispatch times for real-time threads, full kernel
preemption is being implemented.
With the revamp of the kernel concurrency model, much of the kernel is
fully multi-threaded and can therefore be preempted at any time. In
support of lower context switch and dispatch times for real-time
threads, full kernel preemption is being implemented. This has been
implemented already for i386 and x86_64 (and is in 5.0), but needs to
be extended to support the ARM, MIPS and SuperH ports.
Responsible: rmind
4. POSIX shared memory
----------------------
@ -71,7 +76,8 @@ Responsible: rmind
In NetBSD 5.99.15, some changes were made to split the namei() routine
up into logical parts, so that changes can be made to the constituent
parts in a less intrusive way.
parts in a less intrusive way. This is in the repository now, and will
be in 6.0.
Responsible: dholland
@ -101,14 +107,15 @@ Responsible: rmind
9. Incremental namei improvements, Phase 2
------------------------------------------
Implement the rest of the changes to namei outlined in Message-ID:
<20080319053709.GB3951@netbsd.org>. Simplify the locking and behavior
of namei() calls within the kernel to resolve path names within file
systems.
Building on the namei() split which was introduced in 5.99.15 (see (5)
above), further changes will be introduced: see the changes to namei
outlined in Message-ID: <20080319053709.GB3951@netbsd.org> for more
information. This will simplify the locking and behavior of namei()
calls within the kernel to resolve path names within file systems.
Responsible: dholland
Alistair Crooks
Tue 15 Sep 2009 08:02:11 PDT
Mon 21 Sep 2009 08:39:16 BST