serial gdb: interrupts were causing either overruns or stealing
characters. Put splhigh() around the routines which transfer packets
across the line. Since this happens when the system is halted in
debug, this doesn't cause any particular problem. Now it is possible
to run the link at 115,200 bps.
PR: (not assigned yet, must be in limbo somewhere)
Add partial support for detecting non-existent gdb devices.
Add $FreeBSD$ tag.
- Add support for using the PCI BIOS functions for configuration space
accesses, and make this the default.
- Make PNPBIOS the default (obsoletes the PNPBIOS config option).
- Add two new boot-time tunables to disable each of the above.
Exceptions:
Vinum untouched. This means that it cannot be compiled.
Greg Lehey is on the case.
CCD not converted yet, casts to struct buf (still safe)
atapi-cd casts to struct buf to examine B_PHYS
From the README:
Any IEEE 802.11 cards use AMD Am79C930 and Harris (Intersil) Chipset
with PCnetMobile firmware by AMD.
BayStack 650 1Mbps Frequency Hopping PCCARD adapter
BayStack 660 2Mbps Direct Sequence PCCARD adapter
Icom SL-200 2Mbps Direct Sequence PCCARD adapter
Melco WLI-PCM 2Mbps Direct Sequence PCCARD adapter
NEL SSMagic 2Mbps Direct Sequence PCCARD adapter
Netwave AirSurfer Plus
1Mbps Frequency Hopping PCCARD adapter
Netwave AirSurfer Pro
2Mbps Direct Sequence PCCARD adapter
Known Problems:
WEP is not supported.
Does not create IBSS itself.
Cannot configure the following on FreeBSD:
selection of infrastructure/adhoc mode
ESSID
...
Submitted by: Atsushi Onoe <onoe@sm.sony.co.jp>
(Much of this done by script)
Move B_ORDERED flag to b_ioflags and call it BIO_ORDERED.
Move b_pblkno and b_iodone_chain to struct bio while we transition, they
will be obsoleted once bio structs chain/stack.
Add bio_queue field for struct bio aware disksort.
Address a lot of stylistic issues brought up by bde.
via sysctl. It's done pretty simply but it should be quite adequate.
Also move SHMMAXPGS from $machine/include/vmparam.h as the comments that
went with it were wrong... we don't allocate KVM space for the pages so
that comment is bogus.. The only practical limit is how much physical
ram you want to lock up as this stuff isn't paged out or swap backed.
shows `CPUID' and it is useful to identify CPU. So, it is copied from
BIOS work area to the cpu_id variable (PC-98 only).
Submitted by: chi@bd.mbn.or.jp (Chiharu Shibata)
removed unncessary MPLOCKED and 'lock' prefixes from the interrupt
nesting level, since (A) the MP lock is held at the time, and (B) since
the neting level is restored prior to return any interrupted code
will see a consistent value.
includes one of bus_at386.h and bus_pc98.h. Becuase only bus_pc98.h
supports indirect pio and bus_at386.h is identical to old bus.h, there
is no functional change in PC-AT's kernels. That is, it cannot cause
performance loss.
Submitted by: nyan
Reviewed by: imp
bde and luoqi provided useful comments for earlier version.
syscall path inward. A system call may select whether it needs the MP
lock or not (the default being that it does need it).
A great deal of conditional SMP code for various deadended experiments
has been removed. 'cil' and 'cml' have been removed entirely, and the
locking around the cpl has been removed. The conditional
separately-locked fast-interrupt code has been removed, meaning that
interrupts must hold the CPL now (but they pretty much had to anyway).
Another reason for doing this is that the original separate-lock for
interrupts just doesn't apply to the interrupt thread mechanism being
contemplated.
Modifications to the cpl may now ONLY occur while holding the MP
lock. For example, if an otherwise MP safe syscall needs to mess with
the cpl, it must hold the MP lock for the duration and must (as usual)
save/restore the cpl in a nested fashion.
This is precursor work for the real meat coming later: avoiding having
to hold the MP lock for common syscalls and I/O's and interrupt threads.
It is expected that the spl mechanisms and new interrupt threading
mechanisms will be able to run in tandem, allowing a slow piecemeal
transition to occur.
This patch should result in a moderate performance improvement due to
the considerable amount of code that has been removed from the critical
path, especially the simplification of the spl*() calls. The real
performance gains will come later.
Approved by: jkh
Reviewed by: current, bde (exception.s)
Some work taken from: luoqi's patch
fragmentation problem due to geteblk() reserving too much space for the
buffer and imposes a larger granularity (16K) on KVA reservations for
the buffer cache to avoid fragmentation issues. The buffer cache size
calculations have been redone to simplify them (fewer defines, better
comments, less chance of running out of KVA).
The geteblk() fix solves a performance problem that DG was able reproduce.
This patch does not completely fix the KVA fragmentation problems, but
it goes a long way
Mostly Reviewed by: bde and others
Approved by: jkh
Make the public interface more systematically named.
Remove the alternate method, it doesn't do any good, only ruins performance.
Add counters to profile the usage of the 8 access functions.
Apply the beer-ware to my code.
The weird +/- counts are caused by two repocopies behind the scenes:
kern/kern_clock.c -> kern/kern_tc.c
sys/time.h -> sys/timetc.h
(thanks peter!)
field in struct buf: b_iocmd. The b_iocmd is enforced to have
exactly one bit set.
B_WRITE was bogusly defined as zero giving rise to obvious coding
mistakes.
Also eliminate the redundant struct buf flag B_CALL, it can just
as efficiently be done by comparing b_iodone to NULL.
Should you get a panic or drop into the debugger, complaining about
"b_iocmd", don't continue. It is likely to write on your disk
where it should have been reading.
This change is a step in the direction towards a stackable BIO capability.
A lot of this patch were machine generated (Thanks to style(9) compliance!)
Vinum users: Greg has not had time to test this yet, be careful.
it's options COMPAT_OLDISA and COMPAT_OLDPCI. This is meant to be a
fairly strong incentive to update the older drivers to newbus, but doesn't
(quite) leave anybody hanging with no hardware support. I was talking with
a few folks and I was encouraged to simply break or disable the shims but
that was a bit too drastic for my liking.
pte's from zero. The TLB is supposed to be invalidated when pte's are
changed _to_ zero, but this doesn't occur in all cases for global pages
(PG_G stops invltlb() from working, and invltlb_1pg() is not used
enough).
PR: 14141, 16568
Submitted by: dillon
with the known bogus currtpriority. This undoes the previous changes to
sys/i386/i386/trap.c, sys/alpha/alpha/trap.c, sys/sys/systm.h
Now we have the patch set approved by bde.
Approved by: bde
was using them exits.
Don't allow a user process to cause the kernel to take a TRCTRAP on a
user space address.
Reviewed by: jlemon, sef
Approved by: jkh
chipset to be probed & attached on newer Dell PowerEdge servers, such as
the 2400 and 4400.
Reviewed by: dfr, msmith, jlemon
Tested by: hnokubi@yyy.or.jp (in a previous incantation)
Approved by: jkh
