This unifies several times in theory indentical 50 lines of code.
The filesystems have a new method: vop_cachedlookup, which is the
meat of the lookup, and use vfs_cache_lookup() for their vop_lookup
method. vfs_cache_lookup() will check the namecache and pass on
to the vop_cachedlookup method in case of a miss.
It's still the task of the individual filesystems to populate the
namecache with cache_enter().
Filesystems that do not use the namecache will just provide the
vop_lookup method as usual.
irqs can't work (at best, the first one attached wins). It used to
be necessary to skip this check because of bogus irqs in the sound
drivers, but the sound drivers have been fixed, except possibly the
OSS ones.
arg of type u_short (just write the function in ANSI C like most
other functions in this file instead of fixing the interface or
depending on a gcc feature).
vm_inherit_t. These types are smaller than ints, so the prototypes
should have used the promoted type (int) to match the old-style function
definitions. They use just vm_prot_t and/or vm_inherit_t. This depends
on gcc features to work. I fixed the definitions since this is easiest.
The correct fix may be to change the small types to u_int, to optimize
for time instead of space.
wasted.
Fixed type mismatches for functions with vm_prot_t's as args. vm_prot_t
is u_char, so the prototypes should have used promoteof(u_char) to match
the old-style function definitions. They use just vm_prot_t. This depends
on gcc features to work. I fixed the definitions since this is easiest.
The correct fix may be to change vm_prot_t to u_int, to optimize for time
instead of space.
Removed a stale comment.
potential problems with other automatic-reply ICMPs, but some of them may
depend on broadcast/multicast to operate. (This code can simply be
moved to the `reflect' label to generalize it.)
Added a new variable, 'bsp_apic_ready', which is set as soon as the bootstrap
CPU has initialized its local APIC. Conditionalize the GENSPLR functions
to call ss_lock ONLY after bsp_apic_ready is TRUE; This should prevent
any problems with races between the time the 1st AP becomes ready and the
time smp_active is set.
doclusterread/doclusterwrite into ext2_doclusterread and
ext2_doclusterwrite, which are unique names. Moved #include of
<sys/sysctl.h> to the top of the file.
Pointed out by: Bruce Evans <bde@zeta.org.au>
region protected by the simplelock 'cpl_lock'.
Notes:
- this code is currently controlled on a section by section basis with
defines in machine/param.h. All sections are currently enabled.
- this code is not as clean as I would like, but that can wait till later.
- the "giant lock" still surrounds most instances of this "cpl region".
I still have to do the code that arbitrates setting cpl between the
top and bottom halves of the kernel.
- the possibility of deadlock exists, I am committing the code at this
point so as to exercise it and detect any such cases B4 the "giant lock"
is removed.
- Do not malloc SCRIPTS memory for those parts of the microcode that
are to be loaded into the on-chip SRAM of the 53c825a or 875 ...
- Modify ncr_chip_lookup to make adding new entries easier.
- Disable use of on-chip SRAM for the 53c825 rev 0x10 to 0x12, since
there seems to be a problem with rev 0x11, while 0x13 is known to
work. (Tested by Chuck Robey <chuckr@glue.umd.edu>).
This code will be merged into 2.2-stable after a few more days of
testing in -current.
free list problem. Also, the vnode age flag is no longer used by the
vnode pager. (It is actually incorrect to use then.) Constructive
feedback welcome -- just be kind.
pause before attempting to reset the sequencer address. Remove the
loop checking to see if the address has gone to zero since it is
unnecessary
Adjust the abort SCB timeouts back up to 2 seconds where they should
be.
Fix an oversight in the removal of the bus reset settle code where
we might not run the queue of completed commands.
Remove an unecessary call to ahc_run_done_queue in ahc_reset_current_bus.
Submitted by: Tor Egge <Tor.Egge@idi.ntnu.no>
Made NEW_STRATEGY default.
Removed misc. old cruft.
Centralized simple locks into mp_machdep.c
Centralized simple lock macros into param.h
More cleanup in the direction of making splxx()/cpl MP-safe.
I have no way of testing this one, first SMP/cy user please let me know...
It is my belief that sio and cy are the only FAST_INTR() ISRs. If this
is a bad assumption please educate me.
Several new fine-grained locks.
New FAST_INTR() methods:
- separate simplelock for FAST_INTR, no more giant lock.
- FAST_INTR()s no longer checks ipending on way out of ISR.
sio made MP-safe (I hope).
2.3.0 -> 2.3.1 changes, but I seem to recall that there are certain
"issues" with 2.3.1 (I'm not sure if it's just pppd or the whole lot, I
am not quite that far). The present pppd seems to work with it just fine
for the time being.
Among the changes are that zlib (aka LZ77 aka deflate aka gzip) compression
is implemented as well as the original compress(1) LZW style.
same syscall number as NetBSD/OpenBSD. The getpgid() came from NetBSD
(I think) originally, but it's basically cut/paste/edit from the other
simple get*() syscalls.
VM systems usage of the kernel lock (lockmgr) code. This is a first
pass implementation, and is expected to evolve as needed. The API
for the lock manager code has not changed, but the underlying implementation
has changed significantly. This change should not materially affect
our current SMP or UP code without non-standard parameters being used.
This version.
1/ avoids garret's introduced potential page fault. (I got one)
2/ removes compiler warnings
Also fix the tunable scheduling quantum to return a better error code when
fed a bad argument.
Could somebody please update other drivers so that SCSI_RSVD (0x18)
to be handled just like SCSI_BUSY(0x08)?
There's no need for extra state, so we use XS_BUSY for SCSI_RSVD too.
PR: 4257
socket addresses in mbufs. (Socket buffers are the one exception.) A number
of kernel APIs needed to get fixed in order to make this happen. Also,
fix three protocol families which kept PCBs in mbufs to not malloc them
instead. Delete some old compatibility cruft while we're at it, and add
some new routines in the in_cksum family.
- interrupt-driven printing now works (nlpt)
- Rearrangement of bus-related functions into ppb_base/ppbconf
- Addition of ieee1284 interface functions, preliminary parallel-port
PnP support
Submitted by: Nicolas Souchu <Nicolas.Souchu@prism.uvsq.fr>
mod makes sure that the Natoma chipset is set into the correct mode. In
the case of my P6DNF, when booting a UP kernel, I see a substantial improvement
in the latency of certain operations. It appears that the cache hit
latency is curiously improved the most, per lat_mem_rd.
We now tsleep() in kthread_init() between start_init()
and prepare_usermode() while waiting for ALL the idle_loop()
processes to come online.
Debugged & tested by: "Thomas D. Dean" <tomdean@ix.netcom.com>
Reviewed by: David Greenman <dg@root.com>
We now tsleep() in kthread_init() between start_init()
and prepare_usermode() while waiting for ALL the idle_loop()
processes to come online.
Debugged & tested by: "Thomas D. Dean" <tomdean@ix.netcom.com>
Reviewed by: David Greenman <dg@root.com>
entry to the QOUTFIFO when it is full. This should eliminate the
"Timed out while idle" problems that many have reported.
In truth, this is somewhat of a hack. Although are interrupt latency is
low enough that we should be able to always service the queue in time,
since each entry must be passed up to the higher SCSI layer for what can
be a large amount of processing (perhaps even resulting in a new command
being queued) with interrupts disabled, we need this mechanism to avoid
overflow. In the future, these additional tasks will be offloaded to a
software interrupt handler which should make this hack unnecessary.
uerror == 0 && lerror == EACCES, lowervp == NULLVP and union_allocvp
doesn't find existing union node and new union node is created.
Sicne it is dificult to cover all the case, union_lookup always
returns when union_lookup1() returns EACCES.
Submitted by: Naofumi Honda <honda@Kururu.math.sci.hokudai.ac.jp>
Obtained from: NetBSD/pc98
returning ICMP_TIMXCEED)
use CISCO_UNICAST instead of CISCO_MULTICAST to send normal packets.
this is needed for packets to get processed by a cisco router,
but doesn't matter if a packet is just forwarded.
Reviewed by:itojun@itojun.org
reading/writing of mem and regs). Also have to check for the requesting
process being group KMEM -- this is a bit of a hack, but ps et al need it.
Reviewed by: davidg
than max_failures attempts, we are going to REJ it, to prevent endless
NAK loops.
(This is actually part of a larger local set of modifications i'm
running with, but the remainder (PAP & CHAP) ain't ready for prime-
time yet.)
as chargeable CPU usage. This should mitigate the problem of processes
doing disk I/O hogging the CPU. Various users have reported the
problem, and test code shows that the problem should now be gone.
Work done by BSDI, Jonathan Lemon <jlemon@americantv.com>,
Mike Smith <msmith@gsoft.com.au>, Sean Eric Fagan <sef@kithrup.com>,
and probably alot of others.
Submitted by: Jnathan Lemon <jlemon@americantv.com>
Add support for MODEX 320x240x256color with "unchained" adressing, giving
access to all 256K on all VGA's, those with that much memory that is :)
Also make sysmouse use the right resolution in graphics modes.
found by taking my HP800CT apart, perusing HPs (Very good!) service
manual and inference from a bad gif file I found in Finland.
Sigh... But it's a nice machine :-)
accommodate the expanded name, the ICMP types bitmap has been
reduced from 256 bits to 32.
A recompile of kernel and user level ipfw is required.
To be merged into 2.2 after a brief period in -current.
PR: bin/4209
Reviewed by: Archie Cobbs <archie@whistle.com>
certain variants of the NCR chip from FE_CACHE_SET: FE_CLSE (enable
cache-line size register) and FE_ERMP (enable read-multiple). They
will be re-enabled, if a fix for the underlying problem (a restriction
in the memory to memory move logic of some chips) has been implemented.
This code was eliminated when the PEND_INTS algorithm was added. But it was
discovered that PEND_INTS only worsen latency for FAST_INTR() routines,
which can't be marked pending.
Noticed & debugged by: dave adkins <adkin003@gold.tc.umn.edu>
enough and can cause some strange performance problems. Specifically, at
or near startup time is when the problem is worst. To reproduce
the problem, run "lat_syscall stat" from the alpha lmbench code right
after bootup. A positive side effect of this mod is that the name
cache can be set to grow again by sysctl. A noticable positive
performance impact is realized due to a larger namecache being available
as needed (or tuned.)
code. According to the crash dump, bpref is set to 445
and cgp->cg_nclusterblks is 444. Hence in the for loop,
the test fails immediately but the following failure check
(got == cgp->cg_nclusterblks) doesn't trigger because got >
cgp->cg_nclusterblks. This wreaks havoc in the code after that.
Fix: Move one source bit to the left :-)
Noticed by: Mike Hibler <mike@fast.cs.utah.edu>
Submitted by: Kirk McKusick <mckusick@McKusick.COM>
when execing a setuid/setgid binary. Code submitted by Sean Eric Fagan
(sef@freebsd.org).
Also consolidated the setuid/setgid checks into one place.
Reviewed by: dyson,sef
keep ahold of buffers, and therefore leave filesystems dirty. I haven't
been able to test, but the code compiles. Those who run -current, please
test and report back!!! (Sorry :-)).
PR: kern/3571
Submitted by: Dirk Keunecke <dk@panda.rhein-main.de>
Initially functionality is confined to 32-bit BIOS functions, however
it is envisioned that BIOS support may be enlisted for other
activities in the future.
KATO Takenori
Bruce Evans
Poul-Henning Kamp
John Dyson
Steve Passe
Garrett Wollman
Peter Wemm
Joerg Wunsch
Stefan Eßer
Steve Price
Alexander Langer
Julian Elischer
Justin T. Gibbs
John-Mark Gurney
Philippe Charnier
Jonathan Lemon
Tor Egge
Jun-ichiro itojun Hagino
Mike Smith
Andrey A. Chernov
Daniel O'Callaghan
Jordan K. Hubbard
Sean Eric Fagan
Kenjiro Cho
Brian Somers
Søren Schmidt
David Greenman
John Polstra
Jean-Marc Zucconi