Commit Graph

128 Commits

Author SHA1 Message Date
John Baldwin
505b544d52 sched_swi -> swi_sched 2001-02-24 19:09:37 +00:00
John Baldwin
f58a8b1a54 Don't include machine/mutex.h and relocate sys/mutex.h's include to be
closer to alphabetical order and identical to that of the alpha.
2001-02-24 19:09:16 +00:00
John Baldwin
7b4a30b689 Clockframes have a trapframe stored in a cf_tf member, not ct_tf. 2001-02-24 18:57:34 +00:00
John Baldwin
7182d6578d Whitespace nits. 2001-02-24 18:41:38 +00:00
John Baldwin
ad0a541a9e Pass in process to mark ast on to aston(). 2001-02-24 18:41:17 +00:00
John Baldwin
2f01e2eaf2 Axe pcb_schednest as it is no longer used. 2001-02-22 17:09:50 +00:00
John Baldwin
938f15c7c4 Rename switch_trampoline() to fork_trampoline() on the alpha and ia64.
Suggested by:	dfr
2001-02-22 16:56:53 +00:00
John Baldwin
6a7b2863ba Don't set the sched_lock lesting level for new processes as it is no
longer used.
2001-02-22 16:53:23 +00:00
John Baldwin
6efc0dc140 Catch comments up to child_return() -> fork_return() as well. 2001-02-22 16:49:36 +00:00
John Baldwin
2217ebb4df Synch up with the other architectures:
- Remove unneeded spl()'s around mi_switch() in userret().
- Don't hold sched_lock across addupc_task().
- Remove the MD function child_return() now that the MI function
  fork_return() is used instead.
- Use TRAPF_USERMODE() instead of dinking with the trapframe directly to
  check for ast's in kernel mode.
- Check astpending(curproc) and resched_wanted() in ast() and return if
  neither is true.
- Use astoff() rather than setting the non-existent per-cpu variable
  astpending to 0 to clear an ast.
2001-02-22 16:27:03 +00:00
John Baldwin
7def4c9ab5 Use the MI fork_return() fork trampoline callout function for child
processes instead of the MD child_return().
2001-02-22 16:05:48 +00:00
John Baldwin
29182967ef - Don't dink with sched_lock in cpu_switch() since mi_switch() does this
for us.
- Change the switch_trampoline() to call fork_exit() passing in the
  required arguments instead of calling the fork trampoline callout
  function directly.
Warning: this hasn't been tested.

Looked over by:	dfr
2001-02-22 16:05:09 +00:00
John Baldwin
5f78859e9a - Axe the now unused ASS_* assertions for interrupt status.
- Use ia64_get_psr() instead of save_intr() in mtx_legal2block().
2001-02-22 15:43:42 +00:00
John Baldwin
409b7113a1 Add a inline function to read the psr. 2001-02-22 15:39:58 +00:00
John Baldwin
7a473ad644 Add a mtx_intr_enable() macro. 2001-02-22 15:37:57 +00:00
John Baldwin
66b5727c4e Axe the astpending per-cpu variable. 2001-02-22 15:37:34 +00:00
John Baldwin
3e68dabf19 Add TRAPF_PC() and TRAPF_USERMODE() macros and redefine CLKF_PC() and
CLKF_USERMODE() in terms of them.
2001-02-22 15:35:04 +00:00
John Baldwin
de0e830e6d Catch up to new MI astpending and need_resched handling. 2001-02-22 13:29:22 +00:00
Hajimu UMEMOTO
e335205699 Correct disordering which is corresponding to bde's fix to
i386/include/ansi.h.
2001-02-17 14:51:11 +00:00
Hajimu UMEMOTO
ad9fdc8f4d Correct 2nd argument of getnameinfo(3) to socklen_t.
Reviewed by:	itojun
2001-02-15 10:35:55 +00:00
Jake Burkholder
d5a08a6065 Implement a unified run queue and adjust priority levels accordingly.
- All processes go into the same array of queues, with different
  scheduling classes using different portions of the array.  This
  allows user processes to have their priorities propogated up into
  interrupt thread range if need be.
- I chose 64 run queues as an arbitrary number that is greater than
  32.  We used to have 4 separate arrays of 32 queues each, so this
  may not be optimal.  The new run queue code was written with this
  in mind; changing the number of run queues only requires changing
  constants in runq.h and adjusting the priority levels.
- The new run queue code takes the run queue as a parameter.  This
  is intended to be used to create per-cpu run queues.  Implement
  wrappers for compatibility with the old interface which pass in
  the global run queue structure.
- Group the priority level, user priority, native priority (before
  propogation) and the scheduling class into a struct priority.
- Change any hard coded priority levels that I found to use
  symbolic constants (TTIPRI and TTOPRI).
- Remove the curpriority global variable and use that of curproc.
  This was used to detect when a process' priority had lowered and
  it should yield.  We now effectively yield on every interrupt.
- Activate propogate_priority().  It should now have the desired
  effect without needing to also propogate the scheduling class.
- Temporarily comment out the call to vm_page_zero_idle() in the
  idle loop.  It interfered with propogate_priority() because
  the idle process needed to do a non-blocking acquire of Giant
  and then other processes would try to propogate their priority
  onto it.  The idle process should not do anything except idle.
  vm_page_zero_idle() will return in the form of an idle priority
  kernel thread which is woken up at apprioriate times by the vm
  system.
- Update struct kinfo_proc to the new priority interface.  Deliberately
  change its size by adjusting the spare fields.  It remained the same
  size, but the layout has changed, so userland processes that use it
  would parse the data incorrectly.  The size constraint should really
  be changed to an arbitrary version number.  Also add a debug.sizeof
  sysctl node for struct kinfo_proc.
2001-02-12 00:20:08 +00:00
Mark Murray
d888fc4e73 RIP <machine/lock.h>.
Some things needed bits of <i386/include/lock.h> - cy.c now has its
own (only) copy of the COM_(UN)LOCK() macros, and IMASK_(UN)LOCK()
has been moved to <i386/include/apic.h> (AKA <machine/apic.h>).
Reviewed by:	jhb
2001-02-11 10:44:09 +00:00
John Baldwin
929604ec9b Move the initailization of the proc lock for proc0 very early into the MD
startup code.
2001-02-09 16:25:16 +00:00
John Baldwin
ec2e32b7fd Remove bogus #if 0'd code that dinked with the saved interrupt state in
sched_lock.
2001-02-09 14:50:52 +00:00
Bosko Milekic
9ed346bab0 Change and clean the mutex lock interface.
mtx_enter(lock, type) becomes:

mtx_lock(lock) for sleep locks (MTX_DEF-initialized locks)
mtx_lock_spin(lock) for spin locks (MTX_SPIN-initialized)

similarily, for releasing a lock, we now have:

mtx_unlock(lock) for MTX_DEF and mtx_unlock_spin(lock) for MTX_SPIN.
We change the caller interface for the two different types of locks
because the semantics are entirely different for each case, and this
makes it explicitly clear and, at the same time, it rids us of the
extra `type' argument.

The enter->lock and exit->unlock change has been made with the idea
that we're "locking data" and not "entering locked code" in mind.

Further, remove all additional "flags" previously passed to the
lock acquire/release routines with the exception of two:

MTX_QUIET and MTX_NOSWITCH

The functionality of these flags is preserved and they can be passed
to the lock/unlock routines by calling the corresponding wrappers:

mtx_{lock, unlock}_flags(lock, flag(s)) and
mtx_{lock, unlock}_spin_flags(lock, flag(s)) for MTX_DEF and MTX_SPIN
locks, respectively.

Re-inline some lock acq/rel code; in the sleep lock case, we only
inline the _obtain_lock()s in order to ensure that the inlined code
fits into a cache line. In the spin lock case, we inline recursion and
actually only perform a function call if we need to spin. This change
has been made with the idea that we generally tend to avoid spin locks
and that also the spin locks that we do have and are heavily used
(i.e. sched_lock) do recurse, and therefore in an effort to reduce
function call overhead for some architectures (such as alpha), we
inline recursion for this case.

Create a new malloc type for the witness code and retire from using
the M_DEV type. The new type is called M_WITNESS and is only declared
if WITNESS is enabled.

Begin cleaning up some machdep/mutex.h code - specifically updated the
"optimized" inlined code in alpha/mutex.h and wrote MTX_LOCK_SPIN
and MTX_UNLOCK_SPIN asm macros for the i386/mutex.h as we presently
need those.

Finally, caught up to the interface changes in all sys code.

Contributors: jake, jhb, jasone (in no particular order)
2001-02-09 06:11:45 +00:00
Peter Wemm
bcf77694d1 Clean up some leftovers from the root mount cleanup that was done some
time ago.  FFS_ROOT and CD9660_ROOT are obsolete.
2001-02-04 15:35:10 +00:00
Peter Wemm
7aef6a1e88 All the world is not an i386. Merge rev 1.438 of i386/i386/machdep.c.
Make buffer_map a system map.
2001-02-04 07:00:47 +00:00
Peter Wemm
8ab109d131 Remove count for NSIO. The only places it was used it were incorrect.
(alpha-gdbstub.c got sync'ed up a bit with the i386 version)
2001-01-31 10:54:45 +00:00
Doug Rabson
109ba4608b Flesh out EFI support somewhat. 2001-01-29 13:31:19 +00:00
Peter Wemm
03927d3c33 Send "#if NISA > 0" to the bit-bucket and replace it with an option.
These were compile-time "is the isa code present?" tests and not
'how many isa busses' tests.
2001-01-29 09:38:39 +00:00
Marcel Moolenaar
cd682c042d Add gd_witness_spin_check. 2001-01-28 08:06:50 +00:00
Marcel Moolenaar
079c9adfc4 Fix typo. 2001-01-28 08:05:55 +00:00
Marcel Moolenaar
136345c019 Improve kernel bootstrapping:
o  Use objdump instead of gensetdefs(1) to build the linker sets.
o  Allow overriding of nm and objdump in resp. genassym.sh and
   gensetdefs.pl for non-native toolchains.

Reviewed by: arch
Perl improvements: Jos Backus <josb@cncdsl.com>, benno
2001-01-28 06:39:56 +00:00
Doug Rabson
038f285f72 Initialise proc0.p_heldmtx and proc0.p_contested and call
mtx_enter(&Giant, MTX_DEF) after Giant is initialised.

Reviewed by: jhb
2001-01-26 17:52:34 +00:00
Doug Rabson
5c72bfc7ee Change cpuno to cpuid. 2001-01-24 17:12:37 +00:00
Doug Rabson
778d716fd3 Fix typo. 2001-01-24 17:11:33 +00:00
Jason Evans
1b367556b5 Convert all simplelocks to mutexes and remove the simplelock implementations. 2001-01-24 12:35:55 +00:00
John Baldwin
a8a3dd2bb5 - Proc locking.
- P_OWEUPC -> PS_OWEUPC.
2001-01-24 10:38:58 +00:00
John Baldwin
a467939095 - Proc locking.
- Update userret() to take a struct trapframe * as a second argument.
- Axe have_giant and use mtx_owned(&Giant) where appropriate.
2001-01-24 10:38:13 +00:00
John Baldwin
88541b72b7 - Proc locking.
- P_FOO -> PS_FOO.
2001-01-24 10:36:47 +00:00
John Baldwin
89db405712 - Proc locking.
- Bring across forwarded_statclock() fixes from i386 and alpha.
2001-01-24 10:36:21 +00:00
Dag-Erling Smørgrav
a3ea6d41b9 First step towards an MP-safe zone allocator:
- have zalloc() and zfree() always lock the vm_zone.
 - remove zalloci() and zfreei(), which are now redundant.

Reviewed by:	bmilekic, jasone
2001-01-21 22:23:11 +00:00
Jake Burkholder
a448b62ac9 Make intr_nesting_level per-process, rather than per-cpu. Setup
interrupt threads to run with it always >= 1, so that malloc can
detect M_WAITOK from "interrupt" context.  This is also necessary
in order to context switch from sched_ithd() directly.

Reviewed By:	peter
2001-01-21 19:25:07 +00:00
Jason Evans
d1c1b8413e Remove MUTEX_DECLARE() and MTX_COLD. Instead, postpone full mutex
initialization until after malloc() is safe to call, then iterate through
all mutexes and complete their initialization.

This change is necessary in order to avoid some circular bootstrapping
dependencies.
2001-01-21 07:52:20 +00:00
Peter Wemm
a496358e30 Remove the now-empty ipl_funcs.c file on all platforms. 2001-01-19 09:59:56 +00:00
Peter Wemm
198c5b0891 Remove the static splXXX functions and replace them by static __inline
stubs.  Remove the xxx_imask variables which have been all but gone for
a while.
2001-01-19 09:57:29 +00:00
Bosko Milekic
08812b3925 Implement MTX_RECURSE flag for mtx_init().
All calls to mtx_init() for mutexes that recurse must now include
the MTX_RECURSE bit in the flag argument variable. This change is in
preparation for an upcoming (further) mutex API cleanup.
The witness code will call panic() if a lock is found to recurse but
the MTX_RECURSE bit was not set during the lock's initialization.

The old MTX_RECURSE "state" bit (in mtx_lock) has been renamed to
MTX_RECURSED, which is more appropriate given its meaning.

The following locks have been made "recursive," thus far:
eventhandler, Giant, callout, sched_lock, possibly some others declared
in the architecture-specific code, all of the network card driver locks
in pci/, as well as some other locks in dev/ stuff that I've found to
be recursive.

Reviewed by: jhb
2001-01-19 01:59:14 +00:00
Poul-Henning Kamp
02e5c5513c These files have been on deathrow for a couple of months, no appeal. 2001-01-16 10:01:56 +00:00
Mark Murray
b79ad7e642 Remove NOBLOCKRANDOM as a compile-time option. Instead, provide
exactly the same functionality via a sysctl, making this feature
a run-time option.

The default is 1(ON), which means that /dev/random device will
NOT block at startup.

setting kern.random.sys.seeded to 0(OFF) will cause /dev/random
to block until the next reseed, at which stage the sysctl
will be changed back to 1(ON).

While I'm here, clean up the sysctls, and make them dynamic.
Reviewed by:		des
Tested on Alpha by:	obrien
2001-01-14 17:50:15 +00:00
Jake Burkholder
7586909279 Remove unused per-cpu variables inside_intr and ss_eflags. 2001-01-12 07:47:54 +00:00