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ok deraadt@
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setroot() is now (and has been) responsible for setting
the mountroot function pointer "to the right thing", or
failing todo that, to ffs_mountroot;
based on a discussion/diff from deraadt@.
OK deraadt@
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combined, this lets us use crypto before the thread is running
and therefore cryptoraid can attach nice and early.
ok/testing deraadt mbalmer marco
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- Move the functionality of choosing a process from cpu_switch into
a much simpler function: cpu_switchto. Instead of having the locore
code walk the run queues, let the MI code choose the process we
want to run and only implement the context switching itself in MD
code.
- Let MD context switching run without worrying about spls or locks.
- Instead of having the idle loop implemented with special contexts
in MD code, implement one idle proc for each cpu. make the idle
loop MI with MD hooks.
- Change the proc lists from the old style vax queues to TAILQs.
- Change the sleep queue from vax queues to TAILQs. This makes
wakeup() go from O(n^2) to O(n)
there will be some MD fallout, but it will be fixed shortly.
There's also a few cleanups to be done after this.
deraadt@, kettenis@ ok
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the holes a MMU may have from a given vm_map. This will be automagically
invoked for newly created vmspaces.
On platforms with MMU holes (e.g. sun4, sun4c and vax), this prevents
mmap(2) hints which would end up being in the hole to be accepted as valid,
causing unexpected signals when the process tries to access the hole
(since pmap can not fill the hole anyway).
Unfortunately, the logic mmap() uses to pick a valid address for anonymous
mappings needs work, as it will only try to find an address higher than the
hint, which causes all mmap() with a hint in the hole to fail on vax. This
will be improved later.
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bug in the code, but as soon as I try to fix it, it seems to trigger
some other bugs. Instead of trying to figure out what's going on
while everyone suffers, it's better to back out and figure out
the bugs outside the tree.
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subsystems were enabled. others used a *md_diskconf -> diskconf() method to
make sure init_main could "do late setroot". Change all architectures to
have diskconf(), use it directly & late. tested by todd and myself on most
architectures, ok miod too
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this type of code is implemented many times already in the kernel, this is
a generic version of all those replicated code bases.
originally from tedu@
ok tedu@ tom@ deraadt@
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have cpu_info now, so kill the option.
eyeballed by jsg@ and grange@
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leave macros behind for now to keep the commit small
ok art beck miod pedro
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a new struct. Instead of doing a huge rename and deal with the fallout
for weeks, like other projects that need no mention, we will slowly and
carefully move things out of struct proc into a new struct process.
- Create struct process and the infrastructure to create and remove them.
- Move threads in a process into struct process.
deraadt@, tedu@ ok
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Instead, keep the proc pointer in it and put the selinfo on a list
in struct proc in selrecord. Then clean up the list when leaving
sys_select and sys_poll.
miod@ ok, testing by many, including Bobs spamd boxes.
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way, rather than requiring some glue in each machines mainbus probe.
it is still commented out.
based on a discussion with miod@ ok marco@ deraadt@
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it's a good idea to use atomic.h operations on it. This mechanic
change updates all bit operations on p_flag to atomic_{set,clear}bits_int.
Only exception is that P_OWEUPC is set by MI code before calling
need_proftick and it's automatically cleared by ADDUPC. There's
no reason for MD handling of that flag since everyone handles it the
same way.
kettenis@ ok
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In this commit:
- gdt lock on amd64
- sysctl lock
- malloc sysctl lock
- disk sysctl lock
- swap syscall lock
miod@, pedro@ ok (and "looks good" others@)
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should never be referenced outside the context of the process to which
this stack belongs unless we do the PHOLD/PRELE dance. Loads of code
doesn't follow the rules here. Instead of trying to track down all
offenders and fix this hairy situation, it makes much more sense
to not swap kernel stacks.
From art@, tested by many some time ago.
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kern_descrip.c change ok deraadt
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will work; ok miod
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the remainder of the network stack from splimp to splnet.
ok miod@
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uses rfork(RFTHREAD) to create threads, which are presently processes
that are a little more tightly bound together. several new syscalls
added to facilitate a userland thread library.
all conditional on RTHREADS, currently disabled.
ok deraadt
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upatras (dot) gr. Thanks.
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no change in compiler assembly output.
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and have it stall on a semaphore. This allows all kthread creations which
could have been requested during autoconf to be processed before root
is mounted as well.
This causes umass devices attached to any usb with flags 1 (such as on macppc)
to configure properly instead of panicing the kernel at mountroot time.
From NetBSD; tested by various.
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code is all conditionalized on __HAVE_TIMECOUNTER, and not
enabled on any platforms.
adjtime(2) support exists, courtesy of nordin@, sysctl(2) support
and a concept of quality for each time source attached exists.
High quality time sources exists for PIIX4 ACPI timer as well as
some AMD power management chips. This will have to be redone
once we actually add ACPI support (at that time we need to use
the ACPI interfaces to get at these clocks).
ok art@ ken@ miod@ jmc@ and many more
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encapsulating all such access into wall-defined functions
that makes sure locking is done as needed.
It also cleans up some uses of wall time vs. uptime some
places, but there is sure to be more of these needed as
well, particularily in MD code. Also, many current calls
to microtime() should probably be changed to getmicrotime(),
or to the {,get}microuptime() versions.
ok art@ deraadt@ aaron@ matthieu@ beck@ sturm@ millert@ others
"Oh, that is not your problem!" from miod@
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Introduce the cpu_info structure, p_cpu field in struct proc and global
scheduling context and various changed code to deal with this. At the
moment no architecture uses this stuff yet, but it will allow us slow and
controlled migration to the new APIs.
All new code is ifdef:ed out.
ok deraadt@ niklas@
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remove alpha specific definition of ncpus.
OK (and tested on alpha) deraadt@
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ok art deraadt
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From NetBSD.
Tested by many people, ok art@.
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from Patrick Latifi <patrick.l@hermes.usherb.ca>
ok jason@ tedu@
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add e_flags to struct emul. this stores on/off and native flags.
check for emul enabled in check_exec(). gather all the emuls into a
emulsw so a sysctl can find them. create sysctl. move maxhdrsiz calcualation
into init_main so it cleans up sys_execve codepath. teach sysctl utility
to grok kern.emul hierarchy.
requested and ok deraadt@ some comments from mickey@
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rescinded 22 July 1999. Proofed by myself and Theo.
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stack protection when building kernels. Intended to be used on installation
media, with tight space constraints - currently, only added where
SMALL_KERNEL was already defined.
Not thoroughly tested, but requested by deraadt.
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some style input itojun@ tdeval@ toby@
tested, mostly by deraadt, on i386, macppc, vax, sparc64
ok deraadt@ miod@
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niklas@ tdeval@ ok
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still calculate the memory limits for proc0 at after the autoconf is done.
miod@ testing on everything; art@ ok
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