subtract one unsigned number from another potentially smaller
one, leading to wraparound (and heap corruption, eventually).
PR: 58813
MFC after: 2 weeks
GEOM was not designed to handle media that does not have
a size. Blank CD's are of that type, so cheat and set the
media size to -1. This allows burning to work, but makes
GEOM issue outofrange reads that makes the ATAPI subsystem
spew out a few warnings. GEOM should be tought about this.
GEOM was not designed to handle changing the sectorsize
between opens. Writing multitack CD's with both audio and
data tracks needs to change sector size on the fly. We
cheat here and stuff the current sectorsize into GEOM
private internals. GEOM should grow some clean way for this.
o Fix MFC cards. We were bogusly setting CCR_IOBASE[01] and CCR_IOLIMIT.
now when we activate the resource, we adjust these for MFC cards, per the
spec.
o Change type of pf_mfc_* to be bus_addr_t, which is more correct than
long.
This makes my 3C362D/3C363D and 3CXEM556 cards work! Woo Hoo!
o Remove redundant $FreeBSD$
o Better comments about ep_get_macaddr.
o remove one tab in a switch statement (style only)
o Recognize ID 0x0035 as the device ID for the 3CXEM556 that I have. This
makes the 3CXEM556 work for me. Not 100% sure this is the assigned ID,
as I don't have the datasheets for this part, but it does work and get
the correct ethrnet address.
o Comment about the whole fake IRQ 3 thing. some need it, some don't, all
work with it.
the total load, the timeshare load, and the number of threads that can
be migrated to another cpu. Account for these seperately.
- Introduce a KSE_CAN_MIGRATE() macro which determines whether or not a KSE
can be migrated to another CPU. Currently, this only checks to see if
we're an interrupt handler. Eventually this will also be used to support
CPU binding.
mbrtowc() and wcrtomb() directly. GB18030, GBK and UTF2 are left
unconverted; GB18030 will be done eventually, but GBK and UTF2 may just
be removed, as they are subsets of GB18030 and UTF-8 respectively.
An example of useless is bios.h. An example of wrong is msdos.h (due
to the use of long for 32-bit fields).
display.h cannot be removed because it's used by syscons. That header
however has no platform dependency and shouldn't really be here.
Removal if these headers may cause build failures in the ports tree.
It's the ports that need fixing in that case.
Tested with: buildworld, LINT
to better deal with the fact that we need an EFI partition and
that we need to have a mountpoint for it.
o When creating a new partition, add EFI to the list of types
the user can select from. This makes it easy to create an EFI.
o Do not include wizard.c on ia64.
o The user cannot create a partition on ia64 that's a multiple of
the cylinder size. We don't have a notion of cyclinders.
platforms except ia64 and use Int_Open_Disk() in open_ia64_disk.c
on ia64. We need to know more than GEOM can provide us so we're
forced to read from the disk. Move uuid_type() to open_ia64_disk.c
and remove all references on non-ia64.
o Pass the GEOM conftxt to Int_Open_Disk() so that only Open_Disk()
needs to know about GEOM and libdisk can more easily be used with
media not handled by GEOM.
o Create an ia64 specific definiton of struct disk on ia64, because
we don't need/have most of the fields other platforms need and
other fields not applicable on platforms other than ia64.
o Do not compile change.c on ia64. It's too PC specific.
o In Fixup_Names() in create_chunk.c, try all partition numbers
that are valid for the GPT disk. We have the total number of
partitions that can be allocated in the disk structure on ia64.
Also, use the GPT partition naming if we're creating one under
a chunk of type "whole". It's a GPT partition in that case.
o In Create_Chunk(), compile-out the PC specific code on ia64 that
checks BIOS geometry restrictions.
o In Debug_Disk() in disk.c, dump the ia64 specific fields.
o Save the partition index in the chunk on ia64 so that we can
preserve it when we write the data back to disk. This avoids that
partitions get moved around or swapped after installing FreeBSD,
which may render a disk unusable.
Cyl_Aligned(), Prev_Cyl_Aligned() and Next_Cyl_Aligned() into
tautologies on ia64. GPT removes all notion of tracks, heads and
sectors per track, so there are no alignment considerations.
previously only considered the send sequence space. Unfortunately,
some OSes (windows) still use a random positive increments scheme for
their syn-ack ISNs, so I must consider receive sequence space as well.
The value of 250000 bytes / second for Microsoft's ISN rate of increase
was determined by testing with an XP machine.
doesn't have any meaning and only results in lines longer than 80
characters.
o In Delete_Chunk2(), also look for chunks of type "part" under
chunks of type "whole" on ia64. They're not only under chunks of
type "freebsd" there.
wasn't curthread, i.e. when we receive a thread pointer to use
as a function argument. Use VOP_UNLOCK/vrele in these cases.
The only case there td != curthread known at the moment is
boot() calling sync with thread0 pointer.
This fixes the panic on shutdown people have reported.
slice assignment. Add a comment describing what it does.
- Remove a stale XXX comment, the nice should not impact the interactivity,
nice adjustments only effect non-interactive tasks in ULE.
- Don't allow nice -20 tasks to totally starve nice 0 tasks. Give them at
least SCHED_SLICE_MIN ticks. We still allow nice 0 tasks to starve nice
+20 tasks as intended.
- SCHED_PRI_NRESV does not have the off by one error in PRIO_TOTAL so we
do not have to account for it in the few places that we use it.
Requested by: bde
0 and SCHED_SLP_RUN_MAX * 2. This allows us to simplify the algorithm
quite a bit. Before, it dealt with arbitrary values which required us
to do nasty integer division tricks that didn't quite work out correctly.
- Chnage sched_wakeup() to detect conditions where the slp+runtime could
exceed SCHED_SLP_RUN_MAX * 2. This can happen if we go to sleep for
longer than 6 seconds. In this case, we'll just clear the runtime and
set the sleep time to the max.
- Define a new function, sched_interact_fork() which updates the slp+runtime
of a newly forked thread. We want to limit the amount of history retained
from the parent so that we learn the child's behavior quickly. We don't,
however want to decay it to nothing. Previously, we would simply divide
each parameter by 100 whenever we forked. After a few forks the values
would reach 0 and tasks would not be considered interactive.
- Add another KTR entry, cleanup some existing entries.
- Remove a useless sched_interact_update() from sched_priority(). This is
already done by the callers that require it.
