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Commit Graph

2225 Commits

Author SHA1 Message Date
Alan Cox
bf5a327d5e Remove avail_end. It is not used. 2004-04-11 05:08:26 +00:00
Alan Cox
b14d6acced - pmap_kenter_temporary() is unused by machine-independent code. Therefore,
move its declaration to the machine-dependent header file on those
   machines that use it.  In principle, only i386 should have it.
   Alpha and AMD64 should use their direct virtual-to-physical mapping.
 - Remove pmap_kenter_temporary() from ia64.  It is unused.  Approved
   by: marcel@
2004-04-10 22:41:46 +00:00
Warner Losh
f36cfd49ad Remove advertising clause from University of California Regent's
license, per letter dated July 22, 1999 and email from Peter Wemm,
Alan Cox and Robert Watson.

Approved by: core, peter, alc, rwatson
2004-04-07 20:46:16 +00:00
Warner Losh
3501fd399e Remove the advertsing clause, per the Regent's letter dated July 22, 1999.
Approved by: core
2004-04-05 21:00:51 +00:00
Alan Cox
c8607538c8 Remove avail_start on those platforms that no longer use it. (Only amd64
does anything with it beyond simple initialization.)
2004-04-05 04:08:00 +00:00
Alan Cox
bdb93eb248 Remove unused arguments from pmap_init(). 2004-04-05 00:37:50 +00:00
Alan Cox
9132f23442 Remove CADDR1 and CMAP1. They are unused. 2004-04-03 21:38:20 +00:00
Alan Cox
121230a40d In some cases, sf_buf_alloc() should sleep with pri PCATCH; in others, it
should not.  Add a new parameter so that the caller can specify which is
the case.

Reported by:	dillon
2004-04-03 09:16:27 +00:00
John Baldwin
e43257aa7d Finish fixing up Alpha to work with an MP safe ptrace():
- ptrace_single_step() is no longer called with the proc lock held, so
  don't try to unlock it and then relock it.
- Push Giant down into proc_rwmem() instead of forcing all the consumers
  (including Alpha breakpoint support) to explicitly wrap calls to
  proc_rwmem() with Giant.

Tested by:	kensmith
2004-04-01 20:56:44 +00:00
Bruce M Simpson
d25901b5da MFi386: Use the BSD madvise() syscall implementation for Linux binary
emulation, instead of treating it as an unimplemented syscall.

Requested by:	marcel
2004-03-29 02:19:43 +00:00
Ken Smith
24b5b08280 MFi386: correctly calculate the top-of-stack when a kthread is created
with a larger kernel stack. Remove inclusion of opt_kstack_pages.h now
that it's unused.

Note: If anyone's toes got stepped on by me doing this let me know
privately please.

Approved by:	rwatson (mentor)
2004-03-29 02:01:42 +00:00
John Baldwin
fafb7a586b Enable interrupt preemption on Alpha. Previously, flipping this switch on
caused hangs on SMP systems under load.  My theory was that an interrupted
thread was migrating and returning to PAL on a different CPU and that that
caused the hangs.  To prevent this, I used the recently added sched_pin()
API to pin the interrupted thread to the CPU that received the interrupt
across ithread_schedule() to prevent migration.  This seems to have fixed
the hangs based on tests by several folks on the alpha@ list.

Tested by:	wilko, tisco, several others on alpha@
2004-03-23 22:28:16 +00:00
Alan Cox
1af1ebb84e - Add uiomove_fromphys() implementations to alpha and ia64. These only
differ trivially from amd64.
 - Correct a spelling error in a comment.
2004-03-20 21:06:20 +00:00
Marcel Moolenaar
a36bdc0606 Introduce the cpumask_t type. The purpose of the type is to create a
level of abstraction for any and all CPU mask and CPU bitmap variables
so that platforms have the ability to break free from the hard limit
of 32 CPUs, simply because we don't have more bits in an u_int. Note
that the type is not supposed to solve massive parallelism, where
the number of CPUs can be larger than the width of the widest integral
type. As such, cpumask_t is not supposed to be a compound type. If
such would be necessary in the future, we can deal with the issues
then and there. For now, it can be assumed that the type is integral
and unsigned.

With this commit, all MD definitions start off as u_int. This allows
us to phase-in cpumask_t at our leasure without breaking anything.
Once cpumask_t is used consistently, platforms can switch to wider
(or smaller) types if such would be beneficial (or not; whatever :-)

Compile-tested on: i386
2004-03-20 20:41:40 +00:00
John-Mark Gurney
4de27366d1 sync comment with i386's isa.c.. This removes a comment that is YEARS
old...
2004-03-17 21:45:55 +00:00
John Baldwin
b7e23e826c - Replace wait1() with a kern_wait() function that accepts the pid,
options, status pointer and rusage pointer as arguments.  It is up to
  the caller to copyout the status and rusage to userland if needed.  This
  lets us axe the 'compat' argument and hide all that functionality in
  owait(), by the way.  This also cleans up some locking in kern_wait()
  since it no longer has to drop locks around copyout() since all the
  copyout()'s are deferred.
- Convert owait(), wait4(), and the various ABI compat wait() syscalls to
  use kern_wait() rather than wait1() or wait4().  This removes a bit
  more stackgap usage.

Tested on:	i386
Compiled on:	i386, alpha, amd64
2004-03-17 20:00:00 +00:00
Alan Cox
90ecfebd82 Refactor the existing machine-dependent sf_buf_free() into a machine-
dependent function by the same name and a machine-independent function,
sf_buf_mext().  Aside from the virtue of making more of the code machine-
independent, this change also makes the interface more logical.  Before,
sf_buf_free() did more than simply undo an sf_buf_alloc(); it also
unwired and if necessary freed the page.  That is now the purpose of
sf_buf_mext().  Thus, sf_buf_alloc() and sf_buf_free() can now be used
as a general-purpose emphemeral map cache.
2004-03-16 19:04:28 +00:00
John Baldwin
e5592f4dd9 Regenerate. 2004-03-15 22:44:35 +00:00
John Baldwin
216db4ad00 - Mark ABI syscalls that call wait4() MP safe as recent changes to
the kernel wait4() made these all panic() implementations otherwise.
- The i386 linux_ptrace() syscall is MP safe.  Alpha was already marked
  MP safe.
2004-03-15 22:43:49 +00:00
Scott Long
11d905ecd8 Now that contigfree() does not require Giant, don't grab it in busdma. 2004-03-13 15:42:59 +00:00
Alan Cox
fcffa790e9 Retire pmap_pinit2(). Alpha was the last platform that used it. However,
ever since alpha/alpha/pmap.c revision 1.81 introduced the list allpmaps,
there has been no reason for having this function on Alpha.  Briefly,
when pmap_growkernel() relied upon the list of all processes to find and
update the various pmaps to reflect a growth in the kernel's valid
address space, pmap_init2() served to avoid a race between pmap
initialization and pmap_growkernel().  Specifically, pmap_pinit2() was
responsible for initializing the kernel portions of the pmap and
pmap_pinit2() was called after the process structure contained a pointer
to the new pmap for use by pmap_growkernel().  Thus, an update to the
kernel's address space might be applied to the new pmap unnecessarily,
but an update would never be lost.
2004-03-07 21:06:48 +00:00
Alan Cox
925d2fedf5 Remove unused declarations. (Some time ago, these variables became fields
of vm/vm.h's struct kva_md_info.)
2004-03-07 07:13:15 +00:00
Lukas Ertl
1bcf24ee9d Fix syntax errors and wrong function prototypes in several MD header
files when using non-GNUC compilers.

PR:             kern/58515
Submitted by:   Stefan Farfeleder <stefan@fafoe.narf.at>
Approved by:    grog (mentor), obrien
2004-03-05 09:19:59 +00:00
Ken Smith
ea753400f0 The previous commit fixed -current on alpha for machines with
serial console connections but not graphical consoles.  This fixes the
graphical console machines.  It leaves the initial promcons console
driver in place until a bit later in the boot sequence, delaying the
switch to the device drivers more appropriate for the machine's real
console setup.  Note we still need the delayed make_dev() for promcons,
it does not have a proper bus interface so unlike other console drivers
it will not be found later during normal device discovery.

Tested by:			sepotvin <at> videotron <dot> ca
Root cause explained by:	grehan (-current)
Approved by:			rwatson (mentor)
2004-03-01 19:19:15 +00:00
Ken Smith
653700758e Previous commit mistakenly delayed cnadd() as well as make_dev().
Testing on cluster ref machine with just delaying make_dev() seems
to work, and results in printf() output appearing sooner in boot
cycle instead of going to /dev/null.

Caught by:	bde
Pointy hat:	kensmith
Approved by:	rwatson (mentor)
2004-02-28 16:36:14 +00:00
Ken Smith
44bacdd9bc Fix -current builds on alpha. Recent changes in device handling caused
subtle problems with how alpha was handling the promcons device.  This
moves the call to make_dev() for the promcons device to a later point of
the boot-up sequence than where promcons initially gets attached, make_dev()
called during the first attach crashes due to kernel stack issues.

Reviewed by:	gallatin, marcel, phk
Discussed on:	-current@, -alpha@
Approved by:	rwatson (mentor)
2004-02-27 19:30:46 +00:00
Poul-Henning Kamp
dc08ffec87 Device megapatch 4/6:
Introduce d_version field in struct cdevsw, this must always be
initialized to D_VERSION.

Flip sense of D_NOGIANT flag to D_NEEDGIANT, this involves removing
four D_NOGIANT flags and adding 145 D_NEEDGIANT flags.
2004-02-21 21:10:55 +00:00
Poul-Henning Kamp
8e1f1df080 Device megapatch 3/6:
Add missing D_TTY flags to various drivers.

Complete asserts that dev_t's passed to ttyread(), ttywrite(),
ttypoll() and ttykqwrite() have (d_flags & D_TTY) and a struct tty
pointer.

Make ttyread(), ttywrite(), ttypoll() and ttykqwrite() the default
cdevsw methods for D_TTY drivers and remove the explicit initializations
in various drivers cdevsw structures.
2004-02-21 20:41:11 +00:00
Poul-Henning Kamp
c9c7976f7f Device megapatch 1/6:
Free approx 86 major numbers with a mostly automatically generated patch.

A number of strategic drivers have been left behind by caution, and a few
because they still (ab)use their major number.
2004-02-21 19:42:58 +00:00
John Baldwin
0804ed5acc Regen. 2004-02-04 22:00:44 +00:00
John Baldwin
c3b612d935 The following compat syscalls are now mpsafe: linux_getrlimit(),
linux_setrlimit(), linux_old_getrlimit(), osf1_getrlimit(),
osf1_setrlimit(), svr4_sys_ulimit(), svr4_sys_setrlimit(),
svr4_sys_getrlimit(), svr4_sys_setrlimit64(), svr4_sys_getrlimit64(),
ibcs2_sysconf(), and ibcs2_ulimit().
2004-02-04 21:57:00 +00:00
John Baldwin
91d5354a2c Locking for the per-process resource limits structure.
- struct plimit includes a mutex to protect a reference count.  The plimit
  structure is treated similarly to struct ucred in that is is always copy
  on write, so having a reference to a structure is sufficient to read from
  it without needing a further lock.
- The proc lock protects the p_limit pointer and must be held while reading
  limits from a process to keep the limit structure from changing out from
  under you while reading from it.
- Various global limits that are ints are not protected by a lock since
  int writes are atomic on all the archs we support and thus a lock
  wouldn't buy us anything.
- All accesses to individual resource limits from a process are abstracted
  behind a simple lim_rlimit(), lim_max(), and lim_cur() API that return
  either an rlimit, or the current or max individual limit of the specified
  resource from a process.
- dosetrlimit() was renamed to kern_setrlimit() to match existing style of
  other similar syscall helper functions.
- The alpha OSF/1 compat layer no longer calls getrlimit() and setrlimit()
  (it didn't used the stackgap when it should have) but uses lim_rlimit()
  and kern_setrlimit() instead.
- The svr4 compat no longer uses the stackgap for resource limits calls,
  but uses lim_rlimit() and kern_setrlimit() instead.
- The ibcs2 compat no longer uses the stackgap for resource limits.  It
  also no longer uses the stackgap for accessing sysctl's for the
  ibcs2_sysconf() syscall but uses kernel_sysctl() instead.  As a result,
  ibcs2_sysconf() no longer needs Giant.
- The p_rlimit macro no longer exists.

Submitted by:	mtm (mostly, I only did a few cleanups and catchups)
Tested on:	i386
Compiled on:	alpha, amd64
2004-02-04 21:52:57 +00:00
Poul-Henning Kamp
42fd931ee9 GC old unused dev_t mangling stuff. 2004-02-02 12:57:49 +00:00
Jeff Roberson
81aecdd39d - Remove local changes that leaked into my last commit.
Spotted by:	juli
2004-01-24 21:45:25 +00:00
Jeff Roberson
048ac395be - Recruit some new ULE users by making it the default scheduler in GENERIC.
ULE will be in a probationary period to determine whether it will be left
   as the default in 5.3 which would likely mean the rest of the 5.x series.
2004-01-24 21:38:52 +00:00
Jacques Vidrine
5864cda7c6 Add PFIL_HOOKS to the GENERIC kernel configuration, primarily so
that one can load the IPFilter module (which requires PFIL_HOOKS).

Requested by:	Many, for over a year
2004-01-24 14:59:51 +00:00
Poul-Henning Kamp
50d23be140 Add linenumber and source filename to panic(9) output.
Ideally a traceback should be printed too, any takers ?
2004-01-19 21:27:11 +00:00
Jacques Vidrine
e4dc8baa84 Provide sysarch(2) prototypes in the MD sysarch.h headers. While I'm
at it, use the ANSI C generic pointer type for the second argument,
thus matching the documentation.

Remove the now extraneous (and now conflicting) function declarations
in various libc sources.  Remove now unnecessary casts.

Reviewed by:	bde
2004-01-09 16:52:09 +00:00
John Baldwin
ed91a3d95a Comsetic tweaks: use PCPU_GET(cpumask) and CPU_ABSENT().
Tested by:	Dejan Lesjak <dejan.lesjak@ijs.si>
2004-01-07 23:00:20 +00:00
David E. O'Brien
c990f469a7 Convert to __FBSDID. 2004-01-04 23:30:47 +00:00
David Xu
51362c2d8a Make sigaltstack as per-threaded, because per-process sigaltstack state
is useless for threaded programs, multiple threads can not share same
stack.
The alternative signal stack is private for thread, no lock is needed,
the orignal P_ALTSTACK is now moved into td_pflags and renamed to
TDP_ALTSTACK.
For single thread or Linux clone() based threaded program, there is no
semantic changed, because those programs only have one kernel thread
in every process.
2004-01-03 23:36:31 +00:00
David Xu
a30ec4b99c Make sigaltstack as per-threaded, because per-process sigaltstack state
is useless for threaded programs, multiple threads can not share same
stack.
The alternative signal stack is private for thread, no lock is needed,
the orignal P_ALTSTACK is now moved into td_pflags and renamed to
TDP_ALTSTACK.
For single thread or Linux clone() based threaded program, there is no
semantic changed, because those programs only have one kernel thread
in every process.

Reviewed by: deischen, dfr
2004-01-03 02:02:26 +00:00
Mike Silbersack
ddeb5b242e Track three new sendfile-related statistics:
- The number of times sendfile had to do disk I/O
- The number of times sfbuf allocation failed
- The number of times sfbuf allocation had to wait
2003-12-28 08:57:09 +00:00
Mike Silbersack
5caf2b00f0 Move the declaration of sfbufspeak and sfbufsused to mbuf.h,
and use imax instead of max, as sfbufspeak and sfbufsused
are signed.

Submitted by:   bde
2003-12-28 01:43:22 +00:00
Mike Silbersack
5eda9873e9 Track current and peak sfbuf usage, export the values via sysctl. 2003-12-27 07:52:47 +00:00
Peter Wemm
c15e347e22 GC the unused <machine/kse.h> file. 2003-12-24 00:51:30 +00:00
Peter Wemm
bdbbbb1bb9 GC unused 'syshide' override to /dev/null. This was here to disable
the output of the namespc column.  Its functionality was removed some time
ago, but the overrides and the namespc column remained.
2003-12-24 00:32:07 +00:00
Peter Wemm
7f7866ad7a Regen (should be NOP except for rcsid) 2003-12-24 00:26:34 +00:00
Peter Wemm
bb5be17a81 GC unused namespc column and un-wrap some longer lines that now fit. 2003-12-24 00:26:09 +00:00
Peter Wemm
ff7a52b4b5 Regen (should be a NOP except for rcsid changes) 2003-12-23 03:55:06 +00:00
Peter Wemm
b368159c7f GC unused namespace column. Unwrap some long lines that now fit. 2003-12-23 03:53:21 +00:00
Peter Wemm
9b68618df0 Add an additional field to the elf brandinfo structure to support
quicker exec-time replacement of the elf interpreter on an emulation
environment where an entire /compat/* tree isn't really warranted.
2003-12-23 02:42:39 +00:00
Peter Wemm
a89ec05e3e Catch a few places where NULL (pointer) was used where 0 (integer) was
expected.
2003-12-23 02:36:43 +00:00
David E. O'Brien
a5b5101f5e Move the bktr(4) <arch>/include/ioctl_{bt848,meteor}.h files to dev/bktr
as these ioctl's aren't MD.  This also means they are installed in
/usr/include/dev/bktr now.  Also provide compatability wrappers for
where these headers lived in 4.x.
2003-12-08 07:22:42 +00:00
David E. O'Brien
83eba35ee6 Catch up with i386 GENERIC rev 1.389. 2003-12-08 05:20:34 +00:00
Warner Losh
05a463a03d Ooops. These are still used by the bktr driver. David O'Brien has
plans for dealing, but I'll let him deal.

Pointy hat to: imp@
2003-12-07 06:37:32 +00:00
Warner Losh
65b4a1b917 Remote meteor driver. It hasn't compiled in over 3 years. If someone
makes it compile again, and can test it, we can restore the driver to
the tree.
2003-12-07 04:41:11 +00:00
Dag-Erling Smørgrav
bcfb4b30a7 Since the fdc driver can't autodetect the drive capacity on the Alpha,
give it a hint that fd0 is a 1440 kB drive.

PR:		alpha/59026
Approved by:	re (murray)
2003-12-05 00:57:11 +00:00
John Baldwin
b6c71225a9 Fix all users of mp_maxid to use the same semantics, namely:
1) mp_maxid is a valid FreeBSD CPU ID in the range 0 .. MAXCPU - 1.
2) For all active CPUs in the system, PCPU_GET(cpuid) <= mp_maxid.

Approved by:	re (scottl)
Tested on:	i386, amd64, alpha
2003-12-03 14:57:26 +00:00
Jeff Roberson
6315839163 - Set mp_maxid in a way that is consistent with every other arch. It is
one more than the last valid 'cpuid'.

Approved by:	re (rwatson)
2003-11-30 22:08:24 +00:00
Jeff Roberson
2d5d22656d - In db_stack_trace_cmd() bail out if we get confused about the stack.
Tested by:	kkenn
Approved by:	re (scottl)
2003-11-29 11:57:02 +00:00
John Baldwin
798a45964d - Split cpu_mp_probe() into two parts. cpu_mp_setmaxid() is still called
very early (SI_SUB_TUNABLES - 1) and is responsible for setting mp_maxid.
  cpu_mp_probe() is now called at SI_SUB_CPU and determines if SMP is
  actually present and sets mp_ncpus and all_cpus.  Splitting these up
  allows an architecture to probe CPUs later than SI_SUB_TUNABLES by just
  setting mp_maxid to MAXCPU in cpu_mp_setmaxid().  This could allow the
  CPU probing code to live in a module, for example, since modules
  sysinit's in modules cannot be invoked prior to SI_SUB_KLD.  This is
  needed to re-enable the ACPI module on i386.
- For the alpha SMP probing code, use LOCATE_PCS() instead of duplicating
  its contents in a few places.  Also, add a smp_cpu_enabled() function
  to avoid duplicating some code.  There is room for further code
  reduction later since much of this code is also present in cpu_mp_start().
- All archs besides i386 still set mp_maxid to the same values they set it
  to before this change.  i386 now sets mp_maxid to MAXCPU.

Tested on:	alpha, amd64, i386, ia64, sparc64
Approved by:	re (scottl)
2003-11-21 22:23:26 +00:00
Peter Wemm
0bfbe7b935 Widen the enable/disable helper function's argument in line with the
ithread_create() changes etc.  This should be mostly a NOP.
2003-11-17 06:10:15 +00:00
Alan Cox
0ec3db3072 - Remove unnecessary synchronization from sf_buf_init(). (There is only
one active CPU when sf_buf_init() is performed.)
2003-11-16 23:40:06 +00:00
Kris Kennaway
d5688560bf Fix build on alpha
Pointy hat to:	alfred
2003-11-16 21:53:05 +00:00
Alan Cox
e45db9b837 - Modify alpha's sf_buf implementation to use the direct virtual-to-
physical mapping.
 - Move the sf_buf API to its own header file; make struct sf_buf's
   definition machine dependent.  In this commit, we remove an
   unnecessary field from struct sf_buf on the alpha, amd64, and ia64.
   Ultimately, we may eliminate struct sf_buf on those architecures
   except as an opaque pointer that references a vm page.
2003-11-16 06:11:26 +00:00
Jeff Roberson
700249c287 - Drop the process lock before we call into ptrace_{read|write}_int or
any functions that call them.  Calling proc_rwmem() with the proc lock
   held is not safe.  Currently, we're protected from any races by Giant.
   Eventually proc_rwmem() should require the proc lock and not Giant.
2003-11-14 04:04:14 +00:00
Jeff Roberson
08569709d1 - Unlock the clock lock before calling timeout in sysbeep(). This is almost
the same code that i386/isa/clock.c uses.
2003-11-13 09:24:21 +00:00
Jeff Roberson
8865448db0 - Add the WITNESS_SKIPSPIN option to the GENERIC kernel so that users who
enable WITNESS on alphas will not get the expensive spin lock checking by
   default.  This mirrors the default config settings for i386.
2003-11-13 02:04:34 +00:00
Marcel Moolenaar
fcaa2925a9 Change the clear_ret argument of get_mcontext() to be a flags argument.
Since all callers either passed 0 or 1 for clear_ret, define bit 0 in
the flags for use as clear_ret. Reserve bits 1, 2 and 3 for use by MI
code for possible (but unlikely) future use. The remaining bits are for
use by MD code.

This change is triggered by a need on ia64 to have another knob for
get_mcontext().
2003-11-09 20:31:04 +00:00
Scott Long
eb3b7bf69f Document the lockfunc and lockfuncarg arguments to bus_dma_tag_create() in
the busdma headers.
2003-11-07 23:29:42 +00:00
John Baldwin
13b6c41b6c Regen. 2003-11-07 21:13:08 +00:00
John Baldwin
11d4f58fdd Sync MP safe flags with global syscalls.master for the first time. This
includes read(), write(), close(), setuid(), getuid(), linux_ptrace(),
linux_kill(), setpgid(), dup(), pipe(), getgid(), osf1_sigprocmask(),
umask(), getpgrp(), linux_setgroups(), linux_getgroups(), dup2(),
setpriority(), osf1_sigreturn(), osf1_sigsuspend(), osf1_gettimeofday(),
setreuid(), setregid(), setgid(), setsid(), osf1_sigaction(), getpgid(),
linux_getsid(), osf1_sysinfo(), linux_clone(), mlock(), munlock(),
mlockall(), munlockall(), sched_setparam(), sched_getparam(),
linux_sched_setscheduler(), linux_sched_getscheduler(),
linux_sched_get_priority_max(), linux_sched_get_priority_min(),
setresuid(), getresuid(), linux_rt_sigaction(), linux_rt_sigprocmask(),
linux_rt_sigsuspend(), gettimeofday(), linux_getitimer(),
linux_setitimer(), getrusage(), setresgid(), getresgid().
2003-11-07 21:09:19 +00:00
John Baldwin
a2f10724b5 Regen. 2003-11-07 20:56:54 +00:00
John Baldwin
bc7e0ea5ec Sync up with global syscalls.master for MP safe syscalls for the first
time.  This includes read(), write(), close(), getpid(), osf1_setuid(),
getuid(), osf1_kill(), setpgid(), dup(), pipe(), getgid(),
osf1_sigprocmask(), getlogin(), setlogin(), osf1_sigpending(), umask(),
getpgrp(), getgroups(), setgroups(), osf1_setpgrp(), getdtablesize(),
dup2(), setpriority(), getpriority(), osf1_sigreturn(), osf1_sigsuspend(),
osf1_osigstack(), setreuid(), setregid(), osf1_setgid(), setsid(),
osf1_sigaction(), msgctl(), msgget(), msgrcv(), msgsnd(), __semctl(),
semget(), semop(), shmat(), shmctl(), shmdt(), shmget(), osf1_signal(),
getpgid(), getsid(), osf1_sigaltstack(), osf1_sysinfo().
2003-11-07 20:56:31 +00:00
Brooks Davis
9bf40ede4a Replace the if_name and if_unit members of struct ifnet with new members
if_xname, if_dname, and if_dunit. if_xname is the name of the interface
and if_dname/unit are the driver name and instance.

This change paves the way for interface renaming and enhanced pseudo
device creation and configuration symantics.

Approved By:	re (in principle)
Reviewed By:	njl, imp
Tested On:	i386, amd64, sparc64
Obtained From:	NetBSD (if_xname)
2003-10-31 18:32:15 +00:00
Brooks Davis
52820ec247 style: strcmp() does not return a bool. 2003-10-30 23:00:15 +00:00
Peter Wemm
1b03813f65 Add a stub cpu_idle() function for sparc64, alpha, powerpc. This is a
MI declared function so it should be everywhere.
2003-10-19 02:36:07 +00:00
Robert Drehmel
ea924c4cd3 Implement preliminary support for the PT_SYSCALL command to ptrace(2). 2003-10-09 10:17:16 +00:00
Bruce M Simpson
2bc7dd5661 Move pmap_resident_count() from the MD pmap.h to the MI pmap.h.
Add a definition of pmap_wired_count().
Add a definition of vmspace_wired_count().

Reviewed by:	truckman
Discussed with:	peter
2003-10-06 01:47:12 +00:00
Alan Cox
566526a957 Migrate pmap_prefault() into the machine-independent virtual memory layer.
A small helper function pmap_is_prefaultable() is added.  This function
encapsulate the few lines of pmap_prefault() that actually vary from
machine to machine.  Note: pmap_is_prefaultable() and pmap_mincore() have
much in common.  Going forward, it's worth considering their merger.
2003-10-03 22:46:53 +00:00
Poul-Henning Kamp
3f99f14bf1 OK, I messed up /dev/console with what I had hoped would be compat
code.  Convert remaining console drivers and hope for the best.
2003-09-26 19:35:50 +00:00
Poul-Henning Kamp
d31593c1a5 Initialize cn_name instead of cn_dev 2003-09-26 10:53:29 +00:00
Peter Wemm
c460ac3a00 Add sysentvec->sv_fixlimits() hook so that we can catch cases on 64 bit
systems where the data/stack/etc limits are too big for a 32 bit process.

Move the 5 or so identical instances of ELF_RTLD_ADDR() into imgact_elf.c.

Supply an ia32_fixlimits function.  Export the clip/default values to
sysctl under the compat.ia32 heirarchy.

Have mmap(0, ...) respect the current p->p_limits[RLIMIT_DATA].rlim_max
value rather than the sysctl tweakable variable.  This allows mmap to
place mappings at sensible locations when limits have been reduced.

Have the imgact_elf.c ld-elf.so.1 placement algorithm use the same
method as mmap(0, ...) now does.

Note that we cannot remove all references to the sysctl tweakable
maxdsiz etc variables because /etc/login.conf specifies a datasize
of 'unlimited'.  And that causes exec etc to fail since it can no
longer find space to mmap things.
2003-09-25 01:10:26 +00:00
Yoshihiro Takahashi
33e38a2cc8 Implement the bus_space_map() function to allocate resources and initialize
a bus_handle, but currently it does only initializing a bus_handle.
2003-09-23 08:22:34 +00:00
Joerg Wunsch
9678710b1f Mention the puc(4) glue driver in a commented-out example so the user
of "dumb" PCI-based serial/parallel boards get a hint how to enable
them.

I wasn't sure about the ia64, pc98, powerpc, and sparc64 archs whether
they'd support puc(4) or not.
2003-09-19 20:04:55 +00:00
Alan Cox
b9850eb224 Add a new parameter to pmap_extract_and_hold() that is needed to eliminate
Giant from vmapbuf().

Idea from:	tegge
2003-09-12 07:07:49 +00:00
Alan Cox
ba2157f218 Introduce a new pmap function, pmap_extract_and_hold(). This function
atomically extracts and holds the physical page that is associated with the
given pmap and virtual address.  Such a function is needed to make the
memory mapping optimizations used by, for example, pipes and raw disk I/O
MP-safe.

Reviewed by:	tegge
2003-09-08 02:45:03 +00:00
Alan Cox
5d314346f5 MFamd64/i386
Add necessary page locking to pmap_mincore().
2003-09-07 20:02:38 +00:00
Marcel Moolenaar
a91af2c44b Fix build breakage caused by the inclusion of <ddb/ddb.h> while
building a module. Inclusion of option files (opt_ddb.h in this
case) is not possible for modules. The inclusion of opt_ddb.h
in this header is questionable.
2003-09-07 05:33:46 +00:00
Alexander Kabaev
1d49585050 Standardize idempotentcy ifdefs. Consistently use _MACHINE_VARARGS_H_
symbol.
2003-09-01 03:01:45 +00:00
Alan Cox
411d10a600 Migrate the sf_buf allocator that is used by sendfile(2) and zero-copy
sockets into machine-dependent files.  The rationale for this
migration is illustrated by the modified amd64 allocator.  It uses the
amd64's direct map to avoid emphemeral mappings in the kernel's
address space.  On an SMP, the emphemeral mappings result in an IPI
for TLB shootdown for each transmitted page.  Yuck.

Maintainers of other 64-bit platforms with direct maps should be able
to use the amd64 allocator as a reference implementation.
2003-08-29 20:04:10 +00:00
Alan Cox
5d167c620a Eliminate the direct uses of vm_page_lookup() on the pte object. Instead,
apply PHYS_TO_VM_PAGE() to the physical address obtained from the page
table.

(This is based upon similar changes made to the amd64 and i386 pmaps and
a part of a long-term campaign to eliminate pte objects.)

Tested by:	wilko
2003-08-28 23:12:28 +00:00
Marcel Moolenaar
875e2e9ca9 Add option NO_SIO to work-around the hardcoded dependency on sio(4).
Without this option it is not possible to omit the driver from the
configuration file and successfully build a kernel.

This option is specific to alpha.
2003-08-25 03:43:08 +00:00
Warner Losh
19b7ffd1b8 Prefer new location of pci include files (which have only been in the
tree for two or more years now), except in a few places where there's
code to be compatible with older versions of FreeBSD.
2003-08-22 07:20:27 +00:00
Alan Cox
c603549f15 - Lock the pte object when performing vm_page_grab().
- Insure that the page table page is zero filled before adding it
   to the page table.
2003-08-20 20:12:05 +00:00
Gordon Tetlow
df3d69c217 Fixup the ELF branding information to point to the new home of rtld. 2003-08-17 08:08:38 +00:00
Marcel Moolenaar
3e25ce2310 Cleanup <machine/cpu.h> by moving MD prototypes to <machine/md_var.h>
like we have on other platforms. Move savectx() to <machine/pcb.h>.
A lot of files got these MD prototypes through the indirect inclusion
of <machine/cpu.h> and now need to include <machine/md_var.h>. The
number of which is unexpectedly large...

osf1_misc.c especially is tricky because szsigcode is redefined in
one of the osf1 header files. Reordering of the include files was
needed.

linprocfs.c now needs an explicit extern declaration.

Tested with: LINT
2003-08-17 06:42:08 +00:00
Marcel Moolenaar
710338e94f In vm_thread_swap{in|out}(), remove the alpha specific conditional
compilation and replace it with a call to cpu_thread_swap{in|out}().
This allows us to add similar code on ia64 without cluttering the
code even more.
2003-08-16 23:15:15 +00:00
Marcel Moolenaar
26502503e5 Further cleanup <machine/cpu.h> and <machine/md_var.h>: move the MI
prototypes of cpu_halt(), cpu_reset() and swi_vm() from md_var.h to
cpu.h. This affects db_command.c and kern_shutdown.c.

ia64: move all MD prototypes from cpu.h to md_var.h. This affects
madt.c, interrupt.c and mp_machdep.c. Remove is_physical_memory().
It's not used (vm_machdep.c).

alpha: the MD prototypes have been left in cpu.h with a comment
that they should be there. Moving them is left for later. It was
expected that the impact would be significant enough to be done in
a seperate commit.

powerpc: MD prototypes left in cpu.h. Comment added.

Suggested by: bde
Tested with: make universe (pc98 incomplete)
2003-08-16 16:57:57 +00:00
Warner Losh
06b4bf3e55 Expand inline the relevant parts of src/COPYRIGHT for Matt Dillon's
copyrighted files.

Approved by: Matt Dillon
2003-08-12 23:24:05 +00:00
John Baldwin
e9911cf591 - Convert Alpha over to the new calling conventions for cpu_throw() and
cpu_switch() where both the old and new threads are passed in as
  arguments.  Only powerpc uses the old conventions now.
- Update comments in the Alpha swtch.s to reflect KSE changes.

Tested by:	obrien, marcel
2003-08-12 19:33:36 +00:00
Marcel Moolenaar
9df7b8eac4 Implement cpu_set_upcall_kse(). Further tweaking may be needed after
testing.
2003-08-11 01:38:23 +00:00
Andrew Gallatin
c8aacbdaa8 MFI386: Acquire the page queues lock in pmap_insert_entry(), from
i386/i386/pmap.c 1.423
2003-08-07 18:35:16 +00:00
John Baldwin
3bdbd658f1 - Since td_critnest is now initialized in MI code, it doesn't have to be
set in cpu_critical_fork_exit() anymore.
- As far as I can tell, cpu_thread_link() has never been used, not even
  when it was originally added, so remove it.
2003-08-04 20:32:45 +00:00
David E. O'Brien
a98a5f06d3 Style sync. 2003-08-03 07:50:19 +00:00
Marcel Moolenaar
5ba809ff66 In set_mcontext(), store the (user) stack pointer and the thread
pointer in the PCB of the corresponding thread if it's not the
current thread.  This is needed for thr_create() to setup the
newly created thread from the context provided by the application.

This commit finalizes supporting libthr.
2003-07-31 05:27:00 +00:00
Bosko Milekic
b053bc8407 Make sure that when the PV ENTRY zone is created in pmap, that it's
created not only with UMA_ZONE_VM but also with UMA_ZONE_NOFREE.  In
the i386 case in particular, the pmap code would hook a special
page allocation routine that allocated from kernel_map and not kmem_map,
and so when/if the pageout daemon drained the zones, it could actually
push out slabs from the PV ENTRY zone but call UMA's default page_free,
which resulted in pages allocated from kernel_map being freed to
kmem_map; bad.  kmem_free() ignores the return value of the
vm_map_delete and just returns.  I'm not sure what the exact
repercussions could be, but it doesn't look good.

In the PAE case on i386, we also set-up a zone in pmap, so be
conservative for now and make that zone also ZONE_NOFREE and
ZONE_VM.  Do this for the pmap zones for the other archs too,
although in some cases it may not be entirely necessarily.  We'd
rather be safe than sorry at this point.

Perhaps all UMA_ZONE_VM zones should by default be also
UMA_ZONE_NOFREE?

May fix some of silby's crashes on the PV ENTRY zone.
2003-07-31 03:39:51 +00:00
Peter Wemm
ad7a226f9d Deal with 'options KSTACK_PAGES' being a global option. 2003-07-31 01:31:32 +00:00
Marcel Moolenaar
8b04492f2c In cpu_thread_setup(), set md_pcbpaddr to the physical address of
the pcb. We use the physical address for context switching.
While here, fix a nearby style(9) bug.
2003-07-31 01:05:34 +00:00
Marcel Moolenaar
c9085788f6 In get_mcontext(), if we need to clear the return value, clear
FRAME_A3 as well. Otherwise swapcontext() will return -1.
2003-07-30 06:38:35 +00:00
Marcel Moolenaar
de22416ef6 Reset the per-CPU unique value at boot and clear it in the PCB of the
child when forking. This provides a consistent initial state.
Note that cpu_set_upcall() does not clear the per-CPU unique value as
it is followed by a call to set_mcontext(), which sets it accordingly.
2003-07-27 23:45:48 +00:00
Maxime Henrion
d5afecd068 - Introduce a new busdma flag BUS_DMA_ZERO to request for zero'ed
memory in bus_dmamem_alloc().  This is possible now that
  contigmalloc() supports the M_ZERO flag.
- Remove the locking of Giant around calls to contigmalloc() since
  contigmalloc() now grabs Giant itself.
2003-07-27 13:52:10 +00:00
Alan Cox
059358675e MFi386 revision 1.416
Add vm object locking to pmap_prefault().

Note: powerpc and sparc64 do not implement this function.
2003-07-25 18:58:39 +00:00
Marcel Moolenaar
e180afe760 Implement casuptr(). 2003-07-24 07:49:45 +00:00
Marcel Moolenaar
8af2fbd6fb In get_mcontext() and set_mcontext() save and restore the current
thread pointer.
2003-07-24 07:48:11 +00:00
Marcel Moolenaar
c8baa23e56 Implement alpha_pal_wrunique() and alpha_pal_rdunique(). Both are
used to set and get the thread pointer. Note that a context switch
will automaticly save and restore the thread pointer.
2003-07-24 07:41:08 +00:00
Marcel Moolenaar
286cc49014 Use a spare for the thread pointer (mc_thrptr). The thread pointer
is only read and written by set_mcontext() and get_mcontext() for
use by threading libraries.
2003-07-24 07:34:31 +00:00
Bernd Walter
b7c901eba2 Enable eisa support on alpha.
We need eisa bridge support on some models, which now depends on having
eisa in the kernel.
2003-07-21 19:15:25 +00:00
David Xu
20a2d71332 Rename thread_siginfo to cpu_thread_siginfo.
Suggested by: jhb
2003-07-15 00:11:04 +00:00
Alan Cox
6e3bf93111 MFi386
Updates to cnt.v_wire_count, the global count of wired pages, should be
 performed using atomic ops.
2003-07-06 20:32:42 +00:00
Alan Cox
1f78f902a8 Background: pmap_object_init_pt() premaps the pages of a object in
order to avoid the overhead of later page faults.  In general, it
implements two cases: one for vnode-backed objects and one for
device-backed objects.  Only the device-backed case is really
machine-dependent, belonging in the pmap.

This commit moves the vnode-backed case into the (relatively) new
function vm_map_pmap_enter().  On amd64 and i386, this commit only
amounts to code rearrangement.  On alpha and ia64, the new machine
independent (MI) implementation of the vnode case is smaller and more
efficient than their pmap-based implementations.  (The MI
implementation takes advantage of the fact that objects in -CURRENT
are ordered collections of pages.)  On sparc64, pmap_object_init_pt()
hadn't (yet) been implemented.
2003-07-03 20:18:02 +00:00
John Baldwin
5cc1a74e77 Silly compile fixes from resource_disabled() commit.
Reported by:	tinderbox
Pointy hat to:	jhb
2003-07-03 14:33:17 +00:00
John Baldwin
8a9bc9c03b - Use the new resource_disabled() helper function to see if devices are
disabled.
- Change the apm driver to match the acpi driver's behavior by checking to
  see if the device is disabled in the identify routine instead of in the
  probe routine.  This way if the device is disabled it is never created.

Note that a few places (ips(4), Alpha SMP) used "disable" instead of
"disabled" for their hint names, and these hints must be changed to
"disabled".  If this is a big problem, resource_disabled() can always be
changed to honor both names.
2003-07-02 16:09:02 +00:00
Maxime Henrion
3b8caa9bab Oops, add back a free() call that I mistakenly removed in
my last commit.
2003-07-01 21:20:51 +00:00
Maxime Henrion
73f0b07961 Sync with i386's busdma backend. This fixes a few bugs and adds
support for the BUS_DMA_NOWAIT flag in bus_dmamap_load().
2003-07-01 19:02:26 +00:00
Scott Long
f6b1c44d1f Mega busdma API commit.
Add two new arguments to bus_dma_tag_create(): lockfunc and lockfuncarg.
Lockfunc allows a driver to provide a function for managing its locking
semantics while using busdma.  At the moment, this is used for the
asynchronous busdma_swi and callback mechanism.  Two lockfunc implementations
are provided: busdma_lock_mutex() performs standard mutex operations on the
mutex that is specified from lockfuncarg.  dftl_lock() is a panic
implementation and is defaulted to when NULL, NULL are passed to
bus_dma_tag_create().  The only time that NULL, NULL should ever be used is
when the driver ensures that bus_dmamap_load() will not be deferred.
Drivers that do not provide their own locking can pass
busdma_lock_mutex,&Giant args in order to preserve the former behaviour.

sparc64 and powerpc do not provide real busdma_swi functions, so this is
largely a noop on those platforms.  The busdma_swi on is64 is not properly
locked yet, so warnings will be emitted on this platform when busdma
callback deferrals happen.

If anyone gets panics or warnings from dflt_lock() being called, please
let me know right away.

Reviewed by:	tmm, gibbs
2003-07-01 15:52:06 +00:00
Alan Cox
dca96f1adc - Export pmap_enter_quick() to the MI VM. This will permit the
implementation of a largely MI pmap_object_init_pt() for vnode-backed
   objects.  pmap_enter_quick() is implemented via pmap_enter() on sparc64
   and powerpc.
 - Correct a mismatch between pmap_object_init_pt()'s prototype and its
   various implementations.  (I plan to keep pmap_object_init_pt() as
   the MD hook for device-backed objects on i386 and amd64.)
 - Correct an error in ia64's pmap_enter_quick() and adjust its interface
   to match the other versions.  Discussed with: marcel
2003-06-29 21:20:04 +00:00
Marcel Moolenaar
25ae78c736 Implement fuword32() and suword32(). These functions are used in
kern_thread.c. This is a best effort implementation.
2003-06-29 17:14:42 +00:00
Alan Cox
4a309ab44c MFi386
Add vm object locking to pmap_object_init_pt().
2003-06-28 21:21:04 +00:00
Bernd Walter
7d83324cdc enable interrupt routing for mcpcia based systems
Reviewed by:	mjacob, gallatin
2003-06-28 13:47:23 +00:00
David Xu
b8f480ab94 Add a machine depended function thread_siginfo, SA signal code
will use the function to construct a siginfo structure and use
the result to export to userland.

Reviewed by: julian
2003-06-28 06:34:08 +00:00
Scott Long
3eaffdf7e0 Do the first and mostly mechanical step of adding mutex support to the
bus_dma async callback scheme.  Note that sparc64 does not seem to do
async callbacks.  Note that ia64 callbacks might not be MPSAFE at the
moment.  Note that powerpc doesn't seem to do async callbacks due to
the implementation being incomplete.

Reviewed by:	mostly silence on arch@
2003-06-27 08:31:48 +00:00
Poul-Henning Kamp
3b6d965263 Add a f_vnode field to struct file.
Several of the subtypes have an associated vnode which is used for
stuff like the f*() functions.

By giving the vnode a speparate field, a number of checks for the specific
subtype can be replaced simply with a check for f_vnode != NULL, and
we can later free f_data up to subtype specific use.

At this point in time, f_data still points to the vnode, so any code I
might have overlooked will still work.
2003-06-22 08:41:43 +00:00
Alan Cox
40ebf3e43a Fix a performance bug in all of the various implementations of
uma_small_alloc(): They always zeroed the page regardless of what the
caller requested.
2003-06-18 02:57:38 +00:00
David Xu
87e31fda52 Don't set TDF_UPCALLING in cpu_set_upcall, it is not only used by
SA process.
2003-06-15 00:54:07 +00:00
David Xu
0e2a4d3aeb Rename P_THREADED to P_SA. P_SA means a process is using scheduler
activations.
2003-06-15 00:31:24 +00:00
Alan Cox
49a2507bd1 Migrate the thread stack management functions from the machine-dependent
to the machine-independent parts of the VM.  At the same time, this
introduces vm object locking for the non-i386 platforms.

Two details:

1. KSTACK_GUARD has been removed in favor of KSTACK_GUARD_PAGES.  The
different machine-dependent implementations used various combinations
of KSTACK_GUARD and KSTACK_GUARD_PAGES.  To disable guard page, set
KSTACK_GUARD_PAGES to 0.

2. Remove the (unnecessary) clearing of PG_ZERO in vm_thread_new.  In
5.x, (but not 4.x,) PG_ZERO can only be set if VM_ALLOC_ZERO is passed
to vm_page_alloc() or vm_page_grab().
2003-06-14 23:23:55 +00:00
Alan Cox
89f4fca265 Move the *_new_altkstack() and *_dispose_altkstack() functions out of the
various pmap implementations into the machine-independent vm.  They were
all identical.
2003-06-14 06:20:25 +00:00
Peter Wemm
77e2a274d0 GC unused cpu_wait() function 2003-06-11 05:20:33 +00:00
David E. O'Brien
61334e3b42 Use __FBSDID(). 2003-06-10 17:31:31 +00:00
David E. O'Brien
a880eba3cf Use __FBSDID(). 2003-06-10 17:10:18 +00:00
David E. O'Brien
f59584cd7f Use __FBSDID(). 2003-06-10 17:02:51 +00:00
David E. O'Brien
fa58a9089f Use __FBSDID(). 2003-06-10 16:50:43 +00:00
Juli Mallett
d196a10856 Note that scbus is required for SCSI, not just "required" in general.
Submitted by:	Edward Kaplan (tmbg37 on IRC)
Reviewed by:	rwatson (in principle)
2003-06-08 02:03:02 +00:00
Marcel Moolenaar
11e0f8e16d Change the second (and last) argument of cpu_set_upcall(). Previously
we were passing in a void* representing the PCB of the parent thread.
Now we pass a pointer to the parent thread itself.
The prime reason for this change is to allow cpu_set_upcall() to copy
(parts of) the trapframe instead of having it done in MI code in each
caller of cpu_set_upcall(). Copying the trapframe cannot always be
done with a simply bcopy() or may not always be optimal that way. On
ia64 specifically the trapframe contains information that is specific
to an entry into the kernel and can only be used by the corresponding
exit from the kernel. A trapframe copied verbatim from another frame
is in most cases useless without some additional normalization.

Note that this change removes the assignment to td->td_frame in some
implementations of cpu_set_upcall(). The assignment is redundant.
A previous call to cpu_thread_setup() already did the exact same
assignment. An added benefit of removing the redundant assignment is
that we can now change td_pcb without nasty side-effects.

This change officially marks the ability on ia64 for 1:1 threading.

Not tested on: amd64, powerpc
Compile & boot tested on: alpha, sparc64
Functionally tested on: i386, ia64
2003-06-04 21:13:21 +00:00
Hiten Pandya
b77c32a07e Rename BUS_DMAMEM_NOSYNC to BUS_DMA_COHERENT.
The current name is confusing, because it indicates to
the client that a bus_dmamap_sync() operation is not
necessary when the flag is specified, which is wrong.

The main purpose of this flag is to hint the underlying
architecture that DMA memory should be mapped in a coherent
way, but the architecture can ignore it.  But if the
architecture does supports coherent mapping of memory, then
it makes bus_dmamap_sync() calls cheap.

This flag is the same as the one in NetBSD's Bus DMA.

Reviewed by: gibbs, scottl, des (implicitly)
Approved by: re@ (jhb)
2003-05-30 20:40:33 +00:00
Scott Long
7e71df9339 Bring back bus_dmasync_op_t. It is now a typedef to an int, though the
BUS_DMASYNC_ definitions remain as before.  The does not change the ABI,
and reverts the API to be a bit more compatible and flexible.  This has
survived a full 'make universe'.

Approved by:	re (bmah)
2003-05-27 04:59:59 +00:00
Scott Long
c87d464f28 De-orbit bus_dmamem_alloc_size(). It's a hack and was never used anyways.
No need for it to pollute the 5.x API any further.

Approved by:	re (bmah)
2003-05-26 04:00:52 +00:00
Alexander Kabaev
980ded9a7d sys/sys/limits.h:
- Fix visibilty test for LONG_BIT and WORD_BIT.  `#if defined(__FOO_VISIBLE)'
   is alays wrong because __FOO_VISIBLE is always defined (to 0 for
   invisibility).

sys/<arch>/include/limits.h
sys/<arch>/include/_limits.h:

 - Style fixes.

Submitted by:	bde
Reviewed by:	bsdmike
Approved by:	re (scottl)
2003-05-19 20:29:07 +00:00
Ruslan Ermilov
517f3f1ae5 There's just no reason to not have these in GENERIC.
Found by:	release/*/drivers.conf cleaning script
Approved by:	re (scottl)
2003-05-18 20:39:15 +00:00
John Baldwin
90af4afacb - Merge struct procsig with struct sigacts.
- Move struct sigacts out of the u-area and malloc() it using the
  M_SUBPROC malloc bucket.
- Add a small sigacts_*() API for managing sigacts structures: sigacts_alloc(),
  sigacts_free(), sigacts_copy(), sigacts_share(), and sigacts_shared().
- Remove the p_sigignore, p_sigacts, and p_sigcatch macros.
- Add a mutex to struct sigacts that protects all the members of the struct.
- Add sigacts locking.
- Remove Giant from nosys(), kill(), killpg(), and kern_sigaction() now
  that sigacts is locked.
- Several in-kernel functions such as psignal(), tdsignal(), trapsignal(),
  and thread_stopped() are now MP safe.

Reviewed by:	arch@
Approved by:	re (rwatson)
2003-05-13 20:36:02 +00:00
Alexander Kabaev
0eda4c08a5 Style fixes.
Remove DBL_DIG, DBL_MIN, DBL_MAX and their FLT_ counterparts, they
were marked for deprecation ever since SUSv1 at least.
Only define ULLONG_MIN/MAX and LLONG_MAX if long long type is
supported.
Restore a lost comment in MI _limits.h file and remove it from
sys/limits.h where it does not belong.
2003-05-04 22:13:04 +00:00
John Baldwin
d90e753aa8 Range check the syscall number before looking it up in the syscallnames[]
array.

Submitted by:	pho
2003-04-30 17:59:27 +00:00
Alexander Kabaev
104a9b7e3e Deprecate machine/limits.h in favor of new sys/limits.h.
Change all in-tree consumers to include <sys/limits.h>

Discussed on:	standards@
Partially submitted by: Craig Rodrigues <rodrigc@attbi.com>
2003-04-29 13:36:06 +00:00
Alan Cox
718e4d2f64 - Remove unnecessary useracc() calls from osf1_sigreturn(). 2003-04-29 06:33:03 +00:00
Alexander Kabaev
3061bd9ba5 Remove unmatched #endif left over incidenntally in last commit. 2003-04-28 22:35:34 +00:00
John Baldwin
7ff022c485 - Push down Giant into the sysarch() calls that still need Giant.
- Standardize on EINVAL rather than EOPNOTSUPP if the sysarch op value is
  invalid.
2003-04-25 20:04:02 +00:00
John Baldwin
fdbaa60278 Lock Giant around calls to useracc() in osf1_sigreturn() so that the
function is MP safe.
2003-04-25 19:52:30 +00:00
John Baldwin
b11c8f53dc Lock Giant around userland_sysctl() to get the hostname in osf1_sysinfo()
so that the function is MP safe.  The rest of the function doesn't need
Giant.
2003-04-25 19:51:41 +00:00
Daniel Eischen
1328e1c4be Add an argument to get_mcontext() which specified whether the
syscall return values should be cleared.  The system calls
getcontext() and swapcontext() want to return 0 on success
but these contexts can be switched to at a later time so
the return values need to be cleared in the saved register
sets.  Other callers of get_mcontext() would normally want
the context without clearing the return values.

Remove the i386-specific context saving from the KSE code.
get_mcontext() is not i386-specific any more.

Fix a bad pointer in the alpha get_mcontext() code.  The
context was being bcopy()'d from &td->tf_frame, but tf_frame
is itself a pointer, so the thread was being copied instead.
Spotted by jake.

Glanced at by:  jake
Reviewed by:    bde (months ago)
2003-04-25 01:50:30 +00:00
Alexander Kabaev
6fd839f9c7 Add a new sys/limits.h file which in turn depends on machine/_limits.h
to get actual constant values. This is in preparation for machine/limits.h
retirement.

Discussed on:	standards@
Submitted by:	Craig Rodrigues <rodrigc@attbi.com>  (*)
Modified by:	kan
2003-04-23 21:41:59 +00:00
John Baldwin
fe8cdcae87 - Replace inline implementations of sigprocmask() with calls to
kern_sigprocmask() in the various binary compatibility emulators.
- Replace calls to sigsuspend(), sigaltstack(), sigaction(), and
  sigprocmask() that used the stackgap with calls to the corresponding
  kern_sig*() functions instead without using the stackgap.
2003-04-22 18:23:49 +00:00
David Xu
5b70587b8a Remove single threading detecting code, these code really should be
replaced by thread_user_enter(), but current we don't want to enable
this in trap.
2003-04-22 03:17:41 +00:00
Hidetoshi Shimokawa
092cd06fcd Add FireWire drivers to GENERIC. 2003-04-21 16:44:05 +00:00
David E. O'Brien
b67eb8b080 Explicitly declare 'int' parameters. 2003-04-21 16:34:18 +00:00
Bill Paul
87b4a25958 Add device driver support for the ASIX Electronics AX88172 USB 2.0
ethernet controller. The driver has been tested with the LinkSys
USB200M adapter. I know for a fact that there are other devices out
there with this chip but don't have all the USB vendor/device IDs.

Note: I'm not sure if this will force the driver to end up in the
install kernel image or not. Special magic needs to be done to exclude
it to keep the boot floppies from bloating again, someone please
advise.
2003-04-20 19:05:33 +00:00
John Baldwin
9eb78fcfd9 Synchronize the two linux_clone() implementations which includes a few
minor cleanups in both.
2003-04-18 20:54:41 +00:00
John Baldwin
889a6b5845 Use the proc lock to protect p_singlethread and a P_WEXIT test. This
fixes a couple of potential KSE panics on non-i386 arch's that weren't
holding the proc lock when calling thread_exit().
2003-04-18 20:20:00 +00:00
John Baldwin
ee6c1d2ed2 Hold the proc lock for curproc around sigonstack(). 2003-04-18 20:09:04 +00:00
John Baldwin
424da6cb60 Fix a bug in alpha_get_uac() that I introduced in revision 1.18. It is
supposed to return the uac of the parent process of the current process,
not the current process.

Pointy hat to:	jhb
2003-04-18 18:06:32 +00:00
John Baldwin
00e93b4d53 Protect the per-process UAC field with the proc lock where it isn't already
protected.
2003-04-17 21:57:16 +00:00
John Baldwin
e68c51ed5d Fix printf args in debug printfs. 2003-04-16 20:05:42 +00:00
John Baldwin
46ae26f7e0 Assume a struct thread *td instead of a struct proc *p in the debug
printf macros.
2003-04-16 20:04:47 +00:00
John Baldwin
f36a83deff Fix some debug macros. Either missing close parens or close parens in the
wrong place.
2003-04-16 19:28:13 +00:00
John Baldwin
5716b68f9d Remove empty simulator options section and add an ABI emulation section.
Add COMPAT_OSF1, COMPAT_LINUX, and LINPROCFS options to the ABI emulation
section.
2003-04-15 20:21:56 +00:00
Andrew Gallatin
9720c4f309 Style(9) a comment added in previous commit.
Pointed out by: bde
2003-04-11 13:30:32 +00:00
Maxime Henrion
141bacb048 Change the operation parameter of bus_dmamap_sync() from an
enum to an int and redefine the BUS_DMASYNC_* constants as
flags.  This allows us to specify several operations in one
call to bus_dmamap_sync() as in NetBSD.
2003-04-10 23:03:33 +00:00
Andrew Gallatin
cbd0150530 Enable loadable modules to be unloaded on alphas with shared isa
interrupts  by only disabling the interrupt in hardware if
the handler being removed is the only handler.
2003-04-10 20:32:29 +00:00
John Baldwin
d8fed0f0f2 - Kill the pv_flags member of the alpha mdpage since it stop being used
in rev 1.61 of pmap.c.
- Now that pmap_page_is_free() is empty and since it is just a hack for
  the Alpha pmap, remove it.
2003-04-10 18:42:06 +00:00
Dag-Erling Smørgrav
fe58453891 Introduce an M_ASSERTPKTHDR() macro which performs the very common task
of asserting that an mbuf has a packet header.  Use it instead of hand-
rolled versions wherever applicable.

Submitted by:	Hiten Pandya <hiten@unixdaemons.com>
2003-04-08 14:25:47 +00:00
Dag-Erling Smørgrav
9f45b2da8f Define ovbcopy() as a macro which expands to the equivalent bcopy() call,
to take care of the KAME IPv6 code which needs ovbcopy() because NetBSD's
bcopy() doesn't handle overlap like ours.

Remove all implementations of ovbcopy().

Previously, bzero was a function pointer on i386, to save a jmp to
bzero_vector.  Get rid of this microoptimization as it only confuses
things, adds machine-dependent code to an MD header, and doesn't really
save all that much.

This commit does not add my pagezero() / pagecopy() code.
2003-04-04 17:29:55 +00:00
Jeff Roberson
b8db34d280 - Define a new md function 'casuptr'. This atomically compares and sets
a pointer that is in user space.  It will be used as the basic primitive
   for a kernel supported user space lock implementation.
 - Implement this function in x86's support.s
 - Provide stubs that return -1 in all other architectures.  Implementations
   will follow along shortly.

Reviewed by:	jake
2003-04-01 00:18:55 +00:00
Jeff Roberson
4093529dee - Move p->p_sigmask to td->td_sigmask. Signal masks will be per thread with
a follow on commit to kern_sig.c
 - signotify() now operates on a thread since unmasked pending signals are
   stored in the thread.
 - PS_NEEDSIGCHK moves to TDF_NEEDSIGCHK.
2003-03-31 22:49:17 +00:00
Jeff Roberson
1bf4700bff - Change trapsignal() to accept a thread and not a proc.
- Change all consumers to pass in a thread.

Right now this does not cause any functional changes but it will be important
later when signals can be delivered to specific threads.
2003-03-31 22:02:38 +00:00
Jeff Roberson
772e5d8d88 - Use sigexit() instead of twiddling the signal mask, catch, ignore, and
action bits to allow SIGILL to work as expected.  This brings this file in
   line with other architectures.
2003-03-31 21:40:47 +00:00
Andrew Gallatin
62f456b315 Fix the osf1 abi module on SMP systems by making the size of
a struct pmap be the same on both SMP and UP kernels.

It turns out that the size of a struct pmap is much larger on alpha
SMP systems due to the number of pm_asn's being dependant on MAX_CPU.
Since modules are supposed to be SMP agnostic, this has the affect of
moving around the "interesting bits" of the vmspace (daddr, dsize)
that the osf1 module wants to frob.  So the module ends up scribbling in a
pmap struct, and the user either sees a panic, or an application failure.

While here, I've also shrunk MAXCPU to 8 now that it affects the size
of pmap structs on UP systesm.  This should be plenty, as I'm
unware of any hardware we currently run in which supports more than 8
CPUs.
2003-03-29 18:22:29 +00:00
John Baldwin
0f9d6538bb Add missing includes from previous commit.
Reported by:	des
2003-03-27 18:18:35 +00:00
John Baldwin
35eb8c5aa2 Add a cleanup function to destroy the osname_lock and call it on module
unload.

Submitted by:	gallatin
Reported by:	Martin Karlsson <mk-freebsd@bredband.net>
2003-03-26 18:29:44 +00:00
Jake Burkholder
227f9a1c58 - Add vm_paddr_t, a physical address type. This is required for systems
where physical addresses larger than virtual addresses, such as i386s
  with PAE.
- Use this to represent physical addresses in the MI vm system and in the
  i386 pmap code.  This also changes the paddr parameter to d_mmap_t.
- Fix printf formats to handle physical addresses >4G in the i386 memory
  detection code, and due to kvtop returning vm_paddr_t instead of u_long.

Note that this is a name change only; vm_paddr_t is still the same as
vm_offset_t on all currently supported platforms.

Sponsored by:	DARPA, Network Associates Laboratories
Discussed with:	re, phk (cdevsw change)
2003-03-25 00:07:06 +00:00
Ruslan Ermilov
ab0f83bd03 Remove bitrot associated with `maxusers'.
Submitted by:	bde
2003-03-22 14:18:23 +00:00
John Baldwin
a3f76a6394 Fix some memory leaks in the failure cases after trying to look up the
OSF/1 runtime loader.  Also, use td_ucred instead of p_ucred.

Tested by:	gallatin
Reviewed by:	rwatson
2003-03-21 21:49:52 +00:00
John Baldwin
43cf129c99 Sync up linux and svr compat elf fixup functions for exec(). These
functions are now all basically identical except that alpha linux uses
Elf64 arguments and svr4 and i386 linux use Elf32.  The fixups include
changing the first argument to be a register_t ** to match the prototype
for fixup functions, asserting that the process in the image_params struct
is always curproc and removing unnecessary locking to read credentials as a
result, and a few style fixes.
2003-03-21 19:49:34 +00:00
John Baldwin
31566c96f4 Use td->td_ucred instead of td->td_proc->p_ucred. 2003-03-20 21:17:40 +00:00
Maxime Henrion
fd1b2ab0c9 Use atomic operations to increment and decrement the refcount
in busdma tags.  There are currently no tags shared accross
different drivers so this isn't needed at the moment, but it
will be required when we'll have a proper newbus method to get
the parent busdma tag.
2003-03-20 19:45:26 +00:00
Maxime Henrion
379711437f Tidy up the locking of the bounce pages structures.
- Use SYSINIT to initialize the structures instead of checking
  total_bpages against 0 in alloc_bounce_pages(), which could lead
  to several initializations being done at the same time.
- Add missing locking in bus_dmamap_load(), the bounce pages mutex
  must be held when calling reserve_bounce_pages() and when touching
  the bounce_map_waitinglist list.
- Remove the useless splhigh() and splx() calls.
- Assert that the bounce pages mutex is held in reserve_bounce_pages()
  to catch regressions.
2003-03-17 17:26:39 +00:00
Jake Burkholder
5501d40bb9 Made the prototypes for pmap_kenter and pmap_kremove MD. These functions
are machine dependent because they are not required to update the tlb when
mappings are added or removed, and doing so is machine dependent.
In addition, an implementation may require that pages mapped with pmap_kenter
have a backing vm_page_t, which is not necessarily true of all physical
pages, and so may choose to pass the vm_page_t to pmap_kenter instead of the
physical address in order to make this requirement clear.
2003-03-16 04:16:03 +00:00
Maxime Henrion
c0796d1cb4 Grab Giant around calls to contigmalloc() and contigfree() so
that drivers converted to be MP safe don't have to deal with it.
2003-03-13 17:18:48 +00:00
Poul-Henning Kamp
60794e0478 Centralize the devstat handling for all GEOM disk device drivers
in geom_disk.c.

As a side effect this makes a lot of #include <sys/devicestat.h>
lines not needed and some biofinish() calls can be reduced to
biodone() again.
2003-03-08 08:01:31 +00:00
Robert Watson
9283578946 Instrument sysarch() MD privileged I/O access interfaces with a MAC
check, mac_check_sysarch_ioperm(), permitting MAC security policy
modules to control access to these interfaces.  Currently, they
protect access to IOPL on i386, and setting HAE on Alpha.
Additional checks might be required on other platforms to prevent
bypass of kernel security protections by unauthorized processes.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-03-06 04:47:47 +00:00
John Baldwin
263067951a Replace calls to WITNESS_SLEEP() and witness_list() with equivalent calls
to WITNESS_WARN().
2003-03-04 21:03:05 +00:00
Poul-Henning Kamp
7ac40f5f59 Gigacommit to improve device-driver source compatibility between
branches:

Initialize struct cdevsw using C99 sparse initializtion and remove
all initializations to default values.

This patch is automatically generated and has been tested by compiling
LINT with all the fields in struct cdevsw in reverse order on alpha,
sparc64 and i386.

Approved by:    re(scottl)
2003-03-03 12:15:54 +00:00
Dag-Erling Smørgrav
1d062e2be8 Clean up whitespace and remove register keyword. 2003-03-03 09:17:12 +00:00
Dag-Erling Smørgrav
4b7ef73d71 More caddr_t removal, in conjunction with copy{in,out}(9) this time.
Also clean up some egregious casts and incorrect use of sizeof.
2003-03-03 09:14:26 +00:00
Alan Cox
72c3aad7e8 MFi386 revision 1.88
Remove some long unused declarations.
2003-03-01 10:02:11 +00:00
Julian Elischer
ac2e415327 Change the process flags P_KSES to be P_THREADED.
This is just a cosmetic change but I've been meaning to do it for about a year.
2003-02-27 02:05:19 +00:00
David Xu
7d33ae9677 cat KSE > /dev/null 2003-02-27 01:11:58 +00:00
Ruslan Ermilov
824018495d Implemented "nooption" and "nomakeoption" config(8) tokens.
Fixed memory leak in the "nodevice" option implementation.

Use these instead of sed(1) in MD NOTES.

Use a single makefile (sys/conf/makeLINT.mk) to generate
LINT for all architectures.  (Previous versions missed
the LINT dependency on Makefile, and i386 version also
missed the dependency on ${NOTES}.)

Fixed bugs in the previous NOTES conversion using the
"nodevice" token and sed(1):

- i386 LINT lost "device pst".

- pc98 LINT lost SC_*, MAXCONS and KBD_DISABLE_KEYMAP_LOAD
  options, and got needless DPT_* options.

- Added nooptions PPC_DEBUG, PPC_PROBE_CHIPSET, KBD_INSTALL_CDEV
  to sparc64 LINT so that it has a chance to config(8).

This basically returns us to where we were before.
2003-02-26 23:36:59 +00:00
Maxime Henrion
f6c912dd0c Correctly set BUS_SPACE_MAXSIZE in all the busdma backends.
It was bogusly set to 64 * 1024 or 128 * 1024 because it was
bogusly reused in the BUS_DMAMAP_NSEGS definition.
2003-02-26 02:16:06 +00:00
David E. O'Brien
6e818956c5 Move most everything back to a MI NOTES, and use "nodevice" in MD NOTES
Where needed.  Use 'sed' for now in place of "nooptions".  Add a sparc64
MD NOTES.

Reviewed by:	arch@
2003-02-25 20:59:23 +00:00
Maxime Henrion
07159f9c56 Cleanup of the d_mmap_t interface.
- Get rid of the useless atop() / pmap_phys_address() detour.  The
  device mmap handlers must now give back the physical address
  without atop()'ing it.
- Don't borrow the physical address of the mapping in the returned
  int.  Now we properly pass a vm_offset_t * and expect it to be
  filled by the mmap handler when the mapping was successful.  The
  mmap handler must now return 0 when successful, any other value
  is considered as an error.  Previously, returning -1 was the only
  way to fail.  This change thus accidentally fixes some devices
  which were bogusly returning errno constants which would have been
  considered as addresses by the device pager.
- Garbage collect the poorly named pmap_phys_address() now that it's
  no longer used.
- Convert all the d_mmap_t consumers to the new API.

I'm still not sure wheter we need a __FreeBSD_version bump for this,
since and we didn't guarantee API/ABI stability until 5.1-RELEASE.

Discussed with:		alc, phk, jake
Reviewed by:		peter
Compile-tested on:	LINT (i386), GENERIC (alpha and sparc64)
Runtime-tested on:	i386
2003-02-25 03:21:22 +00:00
Marcel Moolenaar
907cf80fbf Remove support for running in SimOS. The support has rotted over
time and there's no indication that it will improve anytime soon.
By removing support for SimOS it is possible to build LINT on
Alpha, which is considered more important at the moment.

Not objected to on: alpha@
2003-02-25 00:42:40 +00:00
Yoshihiro Takahashi
a0450500b3 Move MD devices to <machine>/conf/NOTES. 2003-02-23 13:32:33 +00:00
Marcel Moolenaar
19d4fb8e5c Workaround for compiling LINT. Large kernels (like LINT) can have
branch targets that are too far apart for the BRADDR relocation.
This is caused by the branch prediction optimizationi in the atomic
inlines here, because they jump across sections.
The workaround is to suppress jumping to a different section when
compiling LINT. To generate correct code in that case, the section
directives are replaced by a branch and a label to deal with the
fall-through case. Reasonably good C compilers will optimize this
away anyway, so the end result isn't really that bad.
2003-02-23 06:34:21 +00:00
Poul-Henning Kamp
4209510904 It is pretty evident that nobody loves this file anymore, so retire it
to the Attic from where it can be picked up again, should it ever again
become fashionable to run an alpha simulator.
2003-02-22 13:52:38 +00:00
Poul-Henning Kamp
263444cfbf Change the console interface to pass a "struct consdev *" instead of a
dev_t to the method functions.

The dev_t can still be found at struct consdev *->cn_dev.

Add a void *cn_arg element to struct consdev which the drivers can use
for retrieving their softc.
2003-02-20 20:54:45 +00:00
Warner Losh
a163d034fa Back out M_* changes, per decision of the TRB.
Approved by: trb
2003-02-19 05:47:46 +00:00
Julian Elischer
4a338afd7a Move a bunch of flags from the KSE to the thread.
I was in two minds as to where to put them in the first case..
I should have listenned to the other mind.

Submitted by:	 parts by davidxu@
Reviewed by:	jeff@ mini@
2003-02-17 09:55:10 +00:00
Jeff Roberson
5215b1872f - Split the struct kse into struct upcall and struct kse. struct kse will
soon be visible only to schedulers.  This greatly simplifies much the
   KSE code.

Submitted by:	davidxu
2003-02-17 05:14:26 +00:00
Jeff Roberson
e4625663c9 - Move ke_sticks, ke_iticks, ke_uticks, ke_uu, ke_su, and ke_iu back into
the proc.  These counters are only examined through calcru.

Submitted by:	davidxu
Tested on:	x86, alpha, UP/SMP
2003-02-17 02:19:58 +00:00
Andrew Gallatin
71a45f46e7 zero the end of the memory cluster we're disposing of. Otherwise teh
vm page startup code finds a 20GB cluster on this wacky alphaserver I'm
working on..

MFC After: 7 days
2003-02-16 19:25:04 +00:00
Poul-Henning Kamp
029f0b69a4 Change "dev_t gdbdev" to "void *gdb_arg", some possible paths for GDB
will not have a dev_t.
2003-02-16 19:22:21 +00:00
Andrew Gallatin
cb259970c3 When trimming memory to fit Maxmem, and we discard an entire cluster,
make certain to subtract its pages from physmem.  Otherwise we end up
running phys_avail_cnt negative, and bad stuff happens.

MFC After: 1 week
2003-02-16 17:30:49 +00:00
Poul-Henning Kamp
f341ca9891 Remove #include <sys/dkstat.h> 2003-02-16 14:13:23 +00:00
Tim J. Robbins
1df69b2d1a Regen from syscalls.master 1.52. 2003-02-16 02:32:17 +00:00
Tim J. Robbins
d97ccc7e54 Mark linux_sigpending() as MPSAFE. 2003-02-16 02:31:05 +00:00
David E. O'Brien
36dc5b9427 Fix the style of the SCHED_4BSD commit. 2003-02-13 22:24:44 +00:00
Alan Cox
5b0a1f3af2 MFi386
Remove kptobj.  Instead, use VM_ALLOC_NOOBJ.
2003-02-13 07:03:44 +00:00
Mike Barcroft
8cf5ed5125 Implement fpclassify():
o Add a MD header private to libc called _fpmath.h; this header
  contains bitfield layouts of MD floating-point types.
o Add a MI header private to libc called fpmath.h; this header
  contains bitfield layouts of MI floating-point types.
o Add private libc variables to lib/libc/$arch/gen/infinity.c for
  storing NaN values.
o Add __double_t and __float_t to <machine/_types.h>, and provide
  double_t and float_t typedefs in <math.h>.
o Add some C99 manifest constants (FP_ILOGB0, FP_ILOGBNAN, HUGE_VALF,
  HUGE_VALL, INFINITY, NAN, and return values for fpclassify()) to
  <math.h> and others (FLT_EVAL_METHOD, DECIMAL_DIG) to <float.h> via
  <machine/float.h>.
o Add C99 macro fpclassify() which calls __fpclassify{d,f,l}() based
  on the size of its argument.  __fpclassifyl() is never called on
  alpha because (sizeof(long double) == sizeof(double)), which is good
  since __fpclassifyl() can't deal with such a small `long double'.

This was developed by David Schultz and myself with input from bde and
fenner.

PR:		23103
Submitted by:	David Schultz <dschultz@uclink.Berkeley.EDU>
		(significant portions)
Reviewed by:	bde, fenner (earlier versions)
2003-02-08 20:37:55 +00:00
Hartmut Brandt
e557905435 Fix a problem in bus_dmamap_load_{mbuf,uio} when the first mbuf or the first
uio segment is empty. In this case no dma segment is create by
bus_dmamap_load_buffer, but the calling routine clears the first flag.
Under certain combinations of addresses of the first and second mbuf/uio
buffer this leads to corrupted DMA segment descriptors. This was already
fixed by tmm in sparc64/sparc64/iommu.c.

PR:		kern/47733
Reviewed by:	sam
Approved by:	jake (mentor)
2003-02-04 16:30:27 +00:00
Poul-Henning Kamp
93d6c559eb Convert an instance of "struct timezone tz" use I missed yesterday. 2003-02-04 07:44:04 +00:00
Jake Burkholder
238dd3209a Split statclock into statclock and profclock, and made the method for driving
statclock based on profhz when profiling is enabled MD, since most platforms
don't use this anyway.  This removes the need for statclock_process, whose
only purpose was to subdivide profhz, and gets the profiling clock running
outside of sched_lock on platforms that implement suswintr.
Also changed the interface for starting and stopping the profiling clock to
do just that, instead of changing the rate of statclock, since they can now
be separate.

Reviewed by:	jhb, tmm
Tested on:	i386, sparc64
2003-02-03 17:53:15 +00:00
Hajimu UMEMOTO
ca26842e2a Add IPv6 support for Linuxlator.
Reviewed by:	dwmalone
MFC after:	10 days
2003-02-03 17:43:20 +00:00
Alfred Perlstein
8deebb0160 Consolidate MIN/MAX macros into one place (param.h).
Submitted by: Hiten Pandya <hiten@unixdaemons.com>
2003-02-02 13:17:30 +00:00
Julian Elischer
6f8132a867 Reversion of commit by Davidxu plus fixes since applied.
I'm not convinced there is anything major wrong with the patch but
them's the rules..

I am using my "David's mentor" hat to revert this as he's
offline for a while.
2003-02-01 12:17:09 +00:00
Scott Long
5193a34646 Implement bus_dmamem_alloc_size() and bus_dmamem_free_size() as
counterparts to bus_dmamem_alloc() and bus_dmamem_free().  This allows
the caller to specify the size of the allocation instead of it defaulting
to the max_size field of the busdma tag.

This is intended to aid in converting drivers to busdma.  Lots of
hardware cannot understand scatter/gather lists, which forces the
driver to copy the i/o buffers to a single contiguous region
before sending it to the hardware.  Without these new methods, this
would require a new busdma tag for each operation, or a complex
internal allocator/cache for each driver.

Allocations greater than PAGE_SIZE are rounded up to the next
PAGE_SIZE by contigmalloc(), so this is not suitable for multiple
static allocations that would be better served by a single
fixed-length subdivided allocation.

Reviewed by:	jake (sparc64)
2003-01-29 07:25:27 +00:00
Julian Elischer
0d7cc0749c Unbreak SMP cases for these architectures.
statclock_process() changed arguments.
note: it may be worth checking if curkse is needed on these architectures..
(and if so, why?)
2003-01-27 00:00:06 +00:00
David Xu
0dbb100b9b Move UPCALL related data structure out of kse, introduce a new
data structure called kse_upcall to manage UPCALL. All KSE binding
and loaning code are gone.

A thread owns an upcall can collect all completed syscall contexts in
its ksegrp, turn itself into UPCALL mode, and takes those contexts back
to userland. Any thread without upcall structure has to export their
contexts and exit at user boundary.

Any thread running in user mode owns an upcall structure, when it enters
kernel, if the kse mailbox's current thread pointer is not NULL, then
when the thread is blocked in kernel, a new UPCALL thread is created and
the upcall structure is transfered to the new UPCALL thread. if the kse
mailbox's current thread pointer is NULL, then when a thread is blocked
in kernel, no UPCALL thread will be created.

Each upcall always has an owner thread. Userland can remove an upcall by
calling kse_exit, when all upcalls in ksegrp are removed, the group is
atomatically shutdown. An upcall owner thread also exits when process is
in exiting state. when an owner thread exits, the upcall it owns is also
removed.

KSE is a pure scheduler entity. it represents a virtual cpu. when a thread
is running, it always has a KSE associated with it. scheduler is free to
assign a KSE to thread according thread priority, if thread priority is changed,
KSE can be moved from one thread to another.

When a ksegrp is created, there is always N KSEs created in the group. the
N is the number of physical cpu in the current system. This makes it is
possible that even an userland UTS is single CPU safe, threads in kernel still
can execute on different cpu in parallel. Userland calls kse_create to add more
upcall structures into ksegrp to increase concurrent in userland itself, kernel
is not restricted by number of upcalls userland provides.

The code hasn't been tested under SMP by author due to lack of hardware.

Reviewed by: julian
2003-01-26 11:41:35 +00:00
Jeff Roberson
c3384118a1 - Introduce the SCHED_ULE and SCHED_4BSD options for compile time selection
of the scheduler.
 - Add SCHED_4BSD as the scheduler for all kernel config files in cvs.
2003-01-26 05:29:12 +00:00
Alfred Perlstein
44956c9863 Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.
Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
2003-01-21 08:56:16 +00:00
Jeff Roberson
04de47b0d3 - Add a VM_WAIT in the appropriate cases where vm_page_alloc() fails and flags
indicate that uma_small_alloc should not.  This code should be refactored so
   that there is not so much cross arch duplication.

Reviewed by:	jake
Spotted by:	tmm
Tested on:	alpha, sparc64
Pointy hat to:	jeff and everyone who cut and pasted the bad code. :-)
2003-01-21 05:44:52 +00:00
Jake Burkholder
7251b4bf93 Resolve relative relocations in klds before trying to parse the module's
metadata.  This fixes module dependency resolution by the kernel linker on
sparc64, where the relocations for the metadata are different than on other
architectures; the relative offset is in the addend of an Elf_Rela record
instead of the original value of the location being patched.
Also fix printf formats in debug code.

Submitted by:	Hartmut Brandt <brandt@fokus.gmd.de>
PR:		46732
Tested on:	alpha (obrien), i386, sparc64
2003-01-21 02:42:44 +00:00
Alan Cox
a5382a0701 Move the vm_page_busy() in pmap_dispose_thread() to a place where it is
covered by the page queues lock.  (This actually makes alpha's
pmap_dispose_thread() look more like the i386's.)
2003-01-20 08:14:35 +00:00
Poul-Henning Kamp
f712aa0861 Remove the last stray NO_GEOM option in our example kernel config files. 2003-01-19 11:50:45 +00:00
David E. O'Brien
cdede1b424 Protect against multiple inclusions. 2003-01-18 23:43:12 +00:00
Matthew Dillon
e3669cee72 Merge all the various copies of vm_fault_quick() into a single
portable copy.
2003-01-16 00:02:21 +00:00
Matthew Dillon
f597900329 Merge all the various copies of vmapbuf() and vunmapbuf() into a single
portable copy.  Note that pmap_extract() must be used instead of
pmap_kextract().

This is precursor work to a reorganization of vmapbuf() to close remaining
user/kernel races (which can lead to a panic).
2003-01-15 23:54:35 +00:00
Matthew Dillon
48e3128b34 Bow to the whining masses and change a union back into void *. Retain
removal of unnecessary casts and throw in some minor cleanups to see if
anyone complains, just for the hell of it.
2003-01-13 00:33:17 +00:00
Matthew Dillon
cd72f2180b Change struct file f_data to un_data, a union of the correct struct
pointer types, and remove a huge number of casts from code using it.

Change struct xfile xf_data to xun_data (ABI is still compatible).

If we need to add a #define for f_data and xf_data we can, but I don't
think it will be necessary.  There are no operational changes in this
commit.
2003-01-12 01:37:13 +00:00
Bernd Walter
fcab1602ae Approved by: gallatin (mentor)
Sync with i386.
Don't write crashdumps outside partition boundaries.
2003-01-03 00:19:54 +00:00