add tapmtx, which protects globale variables.
Notes:
- The EBUSY check in MOD_UNLOAD may be subject to a race. Moving the
event handler unregister inside the mutex grab may prevent that race.
- Locking of global variables safely is now possible because tapclones
is only modified when the module is loading or unloading, thanks to
phk's recent chang to clone_setup().
- softc locking to follow.
255; USB keychains exist that use 256 as the number of heads. This
check has also been removed in Darwin (along with most of the other
head/sector sanity checks).
Only cy, bs and wd in the tree still use it. I have a replacement for
cy that I need to test on ISA and PCI cards. bs and wd are pc98 only
drivers that appear to no longer be necessary. I'll be removing them
when I hear back from the pc98 people.
this driver is being retired. Remove it from the tree. If someone
wants to update it to the latest APIs and can test the hardware, it
can return to the tree.
COMPAT_PCI api. This API is going away, so this driver is going away
also.
If users are interested in updating this, please contact the author
since he has some preliminary work to move this to newer APIs.
clock precision on i386. This is a NOP change on i386. But this stops
the mount_nfs units from suddenly changing to units of 1/20 of a second
(vs the normal 1/10 of a second) if HZ is increased.
driver uses COMPAT_ISA shims, and those shims are going away.
It can be brought back if someone updates it to the latest APIs, and
moves it to the appropriate place in the tree.
in the two consumers that need it.. processes using AIO and netncp.
Update docs. Say that process_exec is called with Giant, but not to
depend on it. All our consumers can handle it without Giant.
Fix 'broken' ifdefs.
icc does not support profiling yet so remove unfinished code which was
supposed to help.
Submitted by: netchild (original version)
Reviewed by: ru
- no longer serialize on Giant for thread_single*() and family in fork,
exit and exec
- thread_wait() is mpsafe, assert no Giant
- reduce scope of Giant in exit to not cover thread_wait and just do
vm_waitproc().
- assert that thread_single() family are not called with Giant
- remove the DROP/PICKUP_GIANT macros from thread_single() family
- assert that thread_suspend_check() s not called with Giant
- remove manual drop_giant hack in thread_suspend_check since we know it
isn't held.
- remove the DROP/PICKUP_GIANT macros from thread_suspend_check() family
- mark kse_create() mpsafe
all the ancient Intel/VIA/SIS/etc chipsets on amd64 systems. Even the
newer intel stuff won't need this since we use acpi by default and we
don't have all their magic programming information. Just use a generic
"Host to PCI bridge" name if we ever hit this code.
