the maximum number of pages for buffers) return -1 instead of 0.
This fixes a panic under conditions when many mbufs are needed.
Update the head pointer of the receive buffer pool queue even when
we could not supply a buffer to the chip. Otherwise the chip will
not re-interrupt us for another try. A better strategy would probably
be to remember this condition and to supply buffers without an interrupt
as soon as buffers get available.
Contributed by: Thomaswuerfl@gmx.de
- In sched_prio(), adjust the run queue for threads which may need to move
to the current queue due to priority propagation .
- In sched_switch(), fix style bug introduced when the KSE support went in.
Columns are 80 chars wide, not 90.
- In sched_switch(), Fix the comparison in the idle case and explicitly
re-initialize the runq in the not propagated case.
- Remove dead code in sched_clock().
- In sched_clock(), If we're an IDLE class td set NEEDRESCHED so that threads
that have become runnable will get a chance to.
- In sched_runnable(), if we're not the IDLETD, we should not consider
curthread when examining the load. This mimics the 4BSD behavior of
returning 0 when the only runnable thread is running.
- In sched_userret(), remove the code for setting NEEDRESCHED entirely.
This is not necessary and is not implemented in 4BSD.
- Use the correct comparison in sched_add() when checking to see if an idle
prio task has had it's priority temporarily elevated.
instead of retrying them blindly.
This should fix some of the problems people have been having with cdrom
drives taking a long time to probe. This should also eliminate the need
for the initial TUR in cdsize().
cam_periph.c: Don't keep retrying if the error we get back is a fatal
error. This should help us detect the transition from
"Logical unit not ready, cause not reportable" to "Medium
not present" in the "TUR many" handler. (The TUR many
handler gets triggered for Logical unit not ready, cause
not reportable errors.)
scsi_cd.c: Remove the initial test unit ready in cdsize(). Hopefully
it isn't necessary after the above change.
Submitted by: gibbs (mostly)
Tested by: peter
MFC After: 2 weeks
added for XFree86. There are 2 reasons for doing this with sysarch():
1. The memory mapped I/O space is not at a fixed physical address. An
application has to use some interface to get the base address. It
gets worse if the machine has multiple memory mapped I/O spaces.
2. Access to the memory mapped I/O space needs to happen through a
translation that is flagged as uncachable. There's no interface
that allows a process to do uncached memory I/O, other than though
/dev/mem (possibly).
So, until we either disallow direct access to I/O or bus space from
userland or have a better way of doing this, sysarch() has the least
negative impact on existing interfaces.
that are only in libc.so.5. This broke some 4.X applications linked
to libm and run under 5.X.
Background:
In C99, isinf() and isnan() cannot be implemented as regular
functions. We use macros that call libc functions in 5.X, but for
libm-internal use, we need to use the old versions until the next
time libm's major version number is bumped.
Submitted by: bde
Reported by: imp, kris
errors, not necessarily a pointer such that (intptr_t)pointer is -1.
Also fix the style bug that the cast was not followed by a space.
This style of this file is now perfectly non-KNF for this cast too.
of lock acquires and releases performed.
- Move an assertion from vm_object_collapse() to vm_object_zdtor()
because it applies to all cases of object destruction.
