Commit Graph

7895 Commits

Author SHA1 Message Date
Jake Burkholder
7a72decc2e Remove a leading underscore that prevented I386_CPU kernels from
compiling.

Submitted by:	Alexander N. Kabaev <ak03@gte.com>
PR:		kern/26858
2001-04-26 13:57:03 +00:00
John Baldwin
33a9ed9d0e Change the pfind() and zpfind() functions to lock the process that they
find before releasing the allproc lock and returning.

Reviewed by:	-smp, dfr, jake
2001-04-24 00:51:53 +00:00
Greg Lehey
d98dc34f52 Correct #includes to work with fixed sys/mount.h. 2001-04-23 09:05:15 +00:00
Jesper Skriver
d1745f454d Say goodbye to TCP_COMPAT_42
Reviewed by:	wollman
Requested by:	wollman
2001-04-20 11:58:56 +00:00
John Baldwin
242d02a13f Make the ap_boot_mtx mutex static. 2001-04-20 01:09:05 +00:00
John Baldwin
882796f8c2 Split up the db_printf's for 'show pcpu' so that we only output at most one
line for each db_printf().  Also, just use spaces to line the columns up
rather than trying to be fancy with tabs.
2001-04-20 01:08:27 +00:00
Chris D. Faulhaber
51be6918b5 o Document UFS_ACL option
o Add link to src/sys/ufs/ufs/README.extattr for UFS_EXTATTR* options

Reviewed by:	rwatson
Obtained from:	TrustedBSD Project
2001-04-19 21:33:52 +00:00
Warner Losh
a5e25da40d Back out 1.103. It wasn't approved by the owner of the file and
introduced style bugs.

Submited by: bde
2001-04-18 20:57:43 +00:00
John Baldwin
abd9053ee4 Blow away the panic mutex in favor of using a single atomic_cmpset() on a
panic_cpu shared variable.  I used a simple atomic operation here instead
of a spin lock as it seemed to be excessive overhead.  Also, this can avoid
recursive panics if, for example, witness is broken.
2001-04-17 04:18:08 +00:00
David E. O'Brien
c5e70d92ce Turn on kernel debugging support (DDB, INVARIANTS, INVARIANT_SUPPORT, WITNESS)
by default while SMPng is still being developed.

Submitted by:	jhb
2001-04-15 19:37:28 +00:00
Mark Murray
b4edbce08c Back out wrapping the asm ... ; bits in #ifndef lint macros. There
are some good reasons for not doing this, even if the linting of
the code breaks.

1) If lint were ever to understand the stuff inside the macros,
   that would break the checks.

2) There are ways to use __GNUC__ to exclude overly specific
   code.

3) (Not yet practical) Lint(1) needs to properlyu understand
   all of te code we actually run.

Complained about by:	bde
Education by:		jake, jhb, eivind
2001-04-14 20:42:04 +00:00
John Baldwin
adccbaa77d People are still having problems with i586_* on UP machines and SMP
machines, so just hack it to disable them for now until it can be fixed.

Inspired by hair pulling of:	asmodai
2001-04-13 17:14:53 +00:00
Mark Murray
c13d191de3 Make this more lint-friendly. This file seems to be invoked in just
about any .c file that includes a .h, and lint produces copious
whining because of the asm ...; stuff.
2001-04-13 09:46:54 +00:00
Robert Watson
0b5438c6d1 o Introduce "options REGRESSION", a kernel option which enables
interfaces and functionality intended for use during correctness and
  regression testing.  Features enabled by "options REGRESSION" may
  in and of themselves introduce security or correctness problems if
  used improperly, and so are not intended for use in production
  systems, only in testing environments.

Obtained from:	TrustedBSD Project
2001-04-11 19:29:24 +00:00
John Baldwin
2fea957dc5 Rename the IPI API from smp_ipi_* to ipi_* since the smp_ prefix is just
"redundant noise" and to match the IPI constant namespace (IPI_*).

Requested by:	bde
2001-04-11 17:06:02 +00:00
John Baldwin
5f76d89870 Remove constants defining the bitmasks of the old giant kernel lock. 2001-04-10 22:22:01 +00:00
John Baldwin
8f3b4b873c Remove the old APIC I/O higher level IPI API in favor of the newer MI
API for IPI's that isn't tied to the Intel APIC.  MD code can still use
the apic_ipi() function or dink with the apic directly if needed to send
MD IPI's.
2001-04-10 22:18:21 +00:00
John Baldwin
ca7ef17c08 Remove the BETTER_CLOCK #ifdef's. The code is on by default and is here
to stay for the foreseeable future.

OK'd by:	peter (the idea)
2001-04-10 21:34:13 +00:00
John Baldwin
6a0fa9a023 Add an MI API for sending IPI's. I used the same API present on the alpha
because:
 - it used a better namespace (smp_ipi_* rather than *_ipi),
 - it used better constant names for the IPI's (IPI_* rather than
   X*_OFFSET), and
 - this API also somewhat exists for both alpha and ia64 already.
2001-04-10 21:04:32 +00:00
John Baldwin
7d8e84e364 - One can now specify the decimal pid of a process to trace as a parameter.
Since pid's are not in the kernel address space, this doesn't conflict
  with the funcionality of specifying an arbitrary frame pointer to the
  trace command.
- If the first function of a backtrace maps to fork_trampoline, then this
  is a newly fork'd process that has not been executed yet, so just print
  out the first frame and then return for that case.
- Lower the default count from 65535 to 1024.  ddb doesn't trace into
  userland, and if the stack gets hosed and starts looping it's less
  annoying.
2001-04-09 21:43:45 +00:00
Boris Popov
6f2d8adb12 Add function prototypes and base module for kernel side iconv library.
Add simple "xlat" converter which performs 8to8 table based conversion.
Unicode converter will be added in the near future.

Reviewed by:			silence on arch@
Files placement reviewed by:	bde
Obtained from:			smbfs
2001-04-09 09:39:29 +00:00
John Baldwin
ed55a19f67 Add a new ddb command 'show pcpu' which lists some of the per-cpu data.
Specifically, the cpuid, curproc, curpcb, npxproc, and idleproc members.
Also, if witness is compiled into the kernel, then a list of all the spin
locks held by this CPU is displayed.  By default the information for the
current CPU is displayed, but a decimal cpu id may be specified as a
parameter to obtain information on a specific CPU.
2001-04-06 21:41:52 +00:00
John Baldwin
ae60f36f19 Axe the per-cpu variable witness_spin_check as it was replaced by the
per-cpu spinlocks list.
2001-04-06 07:20:27 +00:00
Warner Losh
aaad2b9793 Soften the dire warnings about this code. Things are kinda working
now and it does compile :-).  There are still some issues, but it is a
good time to soften the warning.
2001-04-05 17:00:46 +00:00
Warner Losh
884c6f61f4 De __P() while I'm here. Done as a separate commit since it is just
stylistic.

# Yes, this break K&R, but this file already used so many gcc extensions
# keeping K&R support seemed too anachronistic for me.

Didn't fix the bug where functions that can only be used in the kernel
are exported to userland.
2001-04-03 18:50:55 +00:00
Warner Losh
29d5de8ad0 Make this file C++ safe. It defines many useful functions (inb, outb)
that people use from userland in C++ programs.  I've had this in my
tree for ages and just got bit by it not being in the real tree again.

This is a MFC candidate.
2001-04-03 18:19:49 +00:00
Alan Cox
07be3b5e76 Regen after adding linux_sched_get_priority_max() and
linux_sched_get_priority_min().
2001-04-01 06:43:09 +00:00
Alan Cox
21c8cdfb96 Add linux_sched_get_priority_max() and linux_sched_get_priority_min(): The
policy parameter requires translation.
2001-04-01 06:37:40 +00:00
John Baldwin
bc4ffcc97f Add missing includes of <sys/sx.h>
Reported by:	peter
2001-03-28 15:04:22 +00:00
Peter Wemm
37c9e8eebd Typo fix. s/criticale_t/critical_t/ 2001-03-28 14:54:28 +00:00
John Baldwin
1005a129e5 Convert the allproc and proctree locks from lockmgr locks to sx locks. 2001-03-28 11:52:56 +00:00
John Baldwin
f34fa851e0 Catch up to header include changes:
- <sys/mutex.h> now requires <sys/systm.h>
- <sys/mutex.h> and <sys/sx.h> now require <sys/lock.h>
2001-03-28 09:17:56 +00:00
John Baldwin
192846463a Rework the witness code to work with sx locks as well as mutexes.
- Introduce lock classes and lock objects.  Each lock class specifies a
  name and set of flags (or properties) shared by all locks of a given
  type.  Currently there are three lock classes: spin mutexes, sleep
  mutexes, and sx locks.  A lock object specifies properties of an
  additional lock along with a lock name and all of the extra stuff needed
  to make witness work with a given lock.  This abstract lock stuff is
  defined in sys/lock.h.  The lockmgr constants, types, and prototypes have
  been moved to sys/lockmgr.h.  For temporary backwards compatability,
  sys/lock.h includes sys/lockmgr.h.
- Replace proc->p_spinlocks with a per-CPU list, PCPU(spinlocks), of spin
  locks held.  By making this per-cpu, we do not have to jump through
  magic hoops to deal with sched_lock changing ownership during context
  switches.
- Replace proc->p_heldmtx, formerly a list of held sleep mutexes, with
  proc->p_sleeplocks, which is a list of held sleep locks including sleep
  mutexes and sx locks.
- Add helper macros for logging lock events via the KTR_LOCK KTR logging
  level so that the log messages are consistent.
- Add some new flags that can be passed to mtx_init():
  - MTX_NOWITNESS - specifies that this lock should be ignored by witness.
    This is used for the mutex that blocks a sx lock for example.
  - MTX_QUIET - this is not new, but you can pass this to mtx_init() now
    and no events will be logged for this lock, so that one doesn't have
    to change all the individual mtx_lock/unlock() operations.
- All lock objects maintain an initialized flag.  Use this flag to export
  a mtx_initialized() macro that can be safely called from drivers.  Also,
  we on longer walk the all_mtx list if MUTEX_DEBUG is defined as witness
  performs the corresponding checks using the initialized flag.
- The lock order reversal messages have been improved to output slightly
  more accurate file and line numbers.
2001-03-28 09:03:24 +00:00
John Baldwin
0006681fe6 Switch from save/disable/restore_intr() to critical_enter/exit(). 2001-03-28 03:06:10 +00:00
John Baldwin
b944b9033a Catch up to the mtx_saveintr -> mtx_savecrit change. 2001-03-28 02:46:21 +00:00
John Baldwin
6283b7d01b - Switch from using save/disable/restore_intr to using critical_enter/exit
and change the u_int mtx_saveintr member of struct mtx to a critical_t
  mtx_savecrit.
- On the alpha we no longer need a custom _get_spin_lock() macro to avoid
  an extra PAL call, so remove it.
- Partially fix using mutexes with WITNESS in modules.  Change all the
  _mtx_{un,}lock_{spin,}_flags() macros to accept explicit file and line
  parameters and rename them to use a prefix of two underscores.  Inside
  of kern_mutex.c, generate wrapper functions for
  _mtx_{un,}lock_{spin,}_flags() (only using a prefix of one underscore)
  that are called from modules.  The macros mtx_{un,}lock_{spin,}_flags()
  are mapped to the __mtx_* macros inside of the kernel to inline the
  usual case of mutex operations and map to the internal _mtx_* functions
  in the module case so that modules will use WITNESS and KTR logging if
  the kernel is compiled with support for it.
2001-03-28 02:40:47 +00:00
John Baldwin
034dc442ad - Add the new critical_t type used to save state inside of critical
sections.
- Add implementations of the critical_enter() and critical_exit() functions
  and remove restore_intr() and save_intr().
- Remove the somewhat bogus disable_intr() and enable_intr() functions on
  the alpha as the alpha actually uses a priority level and not simple bit
  flag on the CPU.
2001-03-28 02:31:54 +00:00
Poul-Henning Kamp
f83880518b Send the remains (such as I have located) of "block major numbers" to
the bit-bucket.
2001-03-26 12:41:29 +00:00
David E. O'Brien
06a6074bb0 Fix a problem where we were switching npxproc from underneath processes
running in process context in order to run interrupt handlers.  This
caused a big smashing of the stack on AMD K6, K5 and Intel Pentium (ie, P5)
processors because we are using npxproc as a flag to indicate whether
the state has been pushed onto the stack.

Submitted by:	bde
2001-03-24 08:27:57 +00:00
Thomas Moestl
368d2edce4 Export intrnames and intrcnt as sysctls (hw.nintr, hw.intrnames and
hw.intrcnt).

Approved by:	rwatson
2001-03-23 03:45:17 +00:00
Robert Watson
49993db091 o Two changes made elsewhere relating to recent EA commits, but not
committed to NOTES:
    - s/FFS_EXTATTR/UFS_EXTATTR/
    - add UFS_EXTATTR_AUTOSTART

Submitted by:	bde
2001-03-19 23:27:37 +00:00
Dag-Erling Smørgrav
11b876c98e Axe TCP_RESTRICT_RST. It was never a particularly good idea except for a few
very specific scenarios, and now that we have had net.inet.tcp.blackhole for
quite some time there is really no reason to use it any more.

(first of three commits)
2001-03-19 22:03:11 +00:00
Dag-Erling Smørgrav
a6221d8c82 Show the bzero() bandwidth in kBps instead of Bps; use u_int32_t instead
of long and int64_t; and print the result as an unsigned long. This should
make the output from the bzero() test more readable, and avoid printing a
negative bandwidth. Note that this doesn't change the decision process,
since that is based on time elapsed, not on computed bandwidth.
2001-03-19 00:28:04 +00:00
Peter Wemm
6eb39ac8fc Use a generic implementation of the Fowler/Noll/Vo hash (FNV hash).
Make the name cache hash as well as the nfsnode hash use it.

As a special tweak, create an unsigned version of register_t.  This allows
us to use a special tweak for the 64 bit versions that significantly
speeds up the i386 version (ie: int64 XOR int64 is slower than int64
XOR int32).

The code layout is a little strange for the string function, but I was
able to get between 5 to 10% improvement over the original version I
started with. The layout affects gcc code generation choices and this way
was fastest on x86 and alpha.

Note that 'CPUTYPE=p3' etc makes a fair difference to this.  It is
around 45% faster with -march=pentiumpro on a p6 cpu.
2001-03-17 09:31:06 +00:00
Søren Schmidt
48c1424385 Remove the now defunct ATA_ENABLE* options
Spotted by: phk
2001-03-16 11:52:25 +00:00
Warner Losh
d6f40bb4b7 add cnw driver to notes/lint 2001-03-16 07:29:58 +00:00
Warner Losh
cc60620649 Resync to GENERIC. This backs out the spammage that I committed wrt
killing ipv6 and some other things.

This makes GENERIC and NEWCARD the same, with OLDCARD stuff commented
out and the NEWCARD stuff included.  For the moment, pcic is commented
out (which has a old).  Plus invariants.  Plus ddb.
2001-03-16 06:33:44 +00:00
Peter Wemm
50e2347e68 Kill the 4MB kernel limit dead. [I hope :-)].
For UP, we were using $tmp_stk as a stack from the data section.  If the
kernel text section grew beyond ~3MB, the data section would be pushed
beyond the temporary 4MB P==V mapping.  This would cause the trampoline
up to high memory to fault.  The hack workaround I did was to use all of
the page table pages that we already have while preparing the initial
P==V mapping, instead of just the first one.
For SMP, the AP bootstrap process suffered the same sort of problem and
got the same treatment.

MFC candidate - this breaks on 4.x just the same..

Thanks to:	Richard Todd <rmtodd@ichotolot.servalan.com>
2001-03-15 05:10:06 +00:00
Peter Wemm
02846353f9 Commit some tweaks I have had laying around my tree for over a year now.
Always set the APM "device" description.  Some minor style tweaks.
2001-03-13 05:56:48 +00:00
Jonathan Lemon
4664a8d5eb Move the fxp driver so it is under the miibus section. 2001-03-12 21:51:07 +00:00