Commit Graph

137306 Commits

Author SHA1 Message Date
Attilio Rao
5b62538f7f Bump __FreeBSD_version in order to signal lockstatus() and VOP_ISLOCKED()
prototypes changing.
2008-02-25 18:56:51 +00:00
Attilio Rao
81c794f998 Axe the 'thread' argument from VOP_ISLOCKED() and lockstatus() as it is
always curthread.

As KPI gets broken by this patch, manpages and __FreeBSD_version will be
updated by further commits.

Tested by:	Andrea Barberio <insomniac at slackware dot it>
2008-02-25 18:45:57 +00:00
Bruce Evans
c32951b16e Use a temporary array instead of the arg array y[] for calling
__kernel_rem_pio2().  This simplifies analysis of aliasing and thus
results in better code for the usual case where __kernel_rem_pio2()
is not called.  In particular, when __ieee854_rem_pio2[f]() is inlined,
it normally results in y[] being returned in registers.  I couldn't
get this to work using the restrict qualifier.

In float precision, this saves 2-3% in most cases on amd64 and i386
(A64) despite it not being inlined in float precision yet.  In double
precision, this has high variance, with an average gain of 2% for
amd64 and 0.7% for i386 (but a much larger gain for usual cases) and
some losses.
2008-02-25 18:28:58 +00:00
Ruslan Ermilov
0be8836d91 Sort.
Prodded by:	obrien
2008-02-25 16:29:54 +00:00
Ruslan Ermilov
d0ca999980 Make again BSD ar(1) the default system ar(1), now properly handling
source upgrades by falling back to GNU ar(1) as necessary.  Option
WITH_BSDAR is gone.  Option _WITH_GNUAR to aid in upgrades is *not*
supposed to be set by the user.

Stop bootstrapping BSD ar(1) on the next __FreeBSD_version bump, as
there are no known bugs in it.  Bump __FreeBSD_version to anticipate
this and to flag the switch to BSD ar(1), should it be needed for
something.

Input from:	obrien, des, kaiw
2008-02-25 16:16:17 +00:00
Rink Springer
b1d8472a5b Some PS/2 mice (at least the A4Tech X-7xx) need to be set to Intelli mode
first before they can be set to Explorer mode.

PR:		kern/118578
Submitted by:	Andriy Gapon <avg@icyb.net.ua> (I added some comments)
Reviewed by:	philip
MFC after:	1 month
2008-02-25 13:57:18 +00:00
Bruce Evans
70d818a20e Change __ieee754_rem_pio2f() to return double instead of float so that
this function and its callers cosf(), sinf() and tanf() don't waste time
converting values from doubles to floats and back for |x| > 9pi/4.
All these functions were optimized a few years ago to mostly use doubles
internally and across the __kernel*() interfaces but not across the
__ieee754_rem_pio2f() interface.

This saves about 40 cycles in cosf(), sinf() and tanf() for |x| > 9pi/4
on amd64 (A64), and about 20 cycles on i386 (A64) (except for cosf()
and sinf() in the upper range).  40 cycles is about 35% for |x| < 9pi/4
<= 2**19pi/2 and about 5% for |x| > 2**19pi/2.  The saving is much
larger on amd64 than on i386 since the conversions are not easy to
optimize except on i386 where some of them are automatic and others
are optimized invalidly.  amd64 is still about 10% slower in cosf()
and tanf() in the lower range due to conversion overhead.

This also gives a tiny speedup for |x| <= 9pi/4 on amd64 (by simplifying
the code).  It also avoids compiler bugs and/or additional slowness
in the conversions on (not yet supported) machines where double_t !=
double.
2008-02-25 13:33:20 +00:00
Christian Brueffer
636133e3dd Add missing words.
MFC after:	3 days
2008-02-25 13:03:18 +00:00
Bruce Evans
0d1564b6c7 Fix some off-by-1 errors.
e_rem_pio2.c:
Float and double precision didn't work because init_jk[] was 1 too small.
It needs to be 2 larger than you might expect, and 1 larger than it was
for these precisions, since its test for recomputing needs a margin of
47 bits (almost 2 24-bit units).

init_jk[] seems to be barely enough for extended and quad precisions.
This hasn't been completely verified.  Callers now get about 24 bits
of extra precision for float, and about 19 for double, but only about
8 for extended and quad.  8 is not enough for callers that want to
produce extra-precision results, but current callers have rounding
errors of at least 0.8 ulps, so another 1/2**8 ulps of error from the
reduction won't affect them much.

Add a comment about some of the magic for init_jk[].

e_rem_pio2.c:
Double precision worked in practice because of a compensating off-by-1
error here.  Extended precision was asked for, and it executed exactly
the same code as the unbroken double precision.

e_rem_pio2f.c:
Float precision worked in practice because of a compensating off-by-1
error here.  Double precision was asked for, and was almost needed,
since the cosf() and sinf() callers want to produce extra-precision
results, at least internally so that their error is only 0.5009 ulps.
However, the extra precision provided by unbroken float precision is
enough, and the double-precision code has extra overheads, so the
off-by-1 error cost about 5% in efficiency on amd64 and i386.
2008-02-25 11:43:20 +00:00
Mike Silbersack
de625c605d Decrease ping6's minimum allowed interval
from .01 to .000001.

Note that due to the architecture of ping6,
you are still limited to kern.hz pings per
second.

MFC after: 2 weeks
2008-02-25 10:45:25 +00:00
Sam Leffler
ba4e014b5c unbreak printing 802.11 tx/rx rates
MFC after:	3 days
2008-02-25 01:28:14 +00:00
Rafal Jaworowski
cb9bdc649d Teach PowerPC CPU identification routines to recognize e500 cores. Fix style
issues in this area.

Approved by:	cognet (mentor)
MFp4:		e500
2008-02-25 00:09:23 +00:00
Ceri Davies
b390c31130 Bump .Dd for revisions 1.83 and 1.84. 2008-02-24 19:52:23 +00:00
Warner Losh
a66a6a2a0c Tag -ilname and -lname as GNU extensions.
Correct their descriptions to indicate that it is the contents of the
symbolic link that are matched.
2008-02-24 19:46:27 +00:00
Rafal Jaworowski
56ae1bed48 Let PowerPC world optionally build with -msoft-float. For FPU-less PowerPC
variations (e500 currently), this provides a gcc-level FPU emulation and is an
alternative approach to the recently introduced kernel-level emulation
(FPU_EMU).

Approved by:	cognet (mentor)
MFp4:		e500
2008-02-24 19:22:53 +00:00
Kai Wang
39358b4e6c style(9) whitespace fix: A space is mandated after keyword 'return'.
Submitted by:	    jkoshy
Approved by:	    jkoshy (mentor)
2008-02-24 18:30:17 +00:00
Kai Wang
a711c209bc Since the program is installed as 'bsdranlib', we need to
check if it is invoked as 'bsdranlib'.

Reported by:	Michael Plass <mfp49_freebsd [AT] plass-family [DOT] net>
Reviewed by:	Michael Plass <mfp49_freebsd [AT] plass-family [DOT] net>
Reviewed by:	jkoshy
Approved by:	jkoshy (mentor)
2008-02-24 18:07:46 +00:00
Alan Cox
4c8e0452e0 Correct a long-standing error in vm_object_deallocate(). Specifically,
only anonymous default (OBJT_DEFAULT) and swap (OBJT_SWAP) objects should
ever have OBJ_ONEMAPPING set.  However, vm_object_deallocate() was
setting it on device (OBJT_DEVICE) objects.  As a result,
vm_object_page_remove() could be called on a device object and if that
occurred pmap_remove_all() would be called on the device object's pages.
However, a device object's pages are fictitious, and fictitious pages do
not have an initialized pv list (struct md_page).

To date, fictitious pages have been allocated from zeroed memory,
effectively hiding this problem.  Now, however, the conversion of rotting
diagnostics to invariants in the amd64 and i386 pmaps has revealed the
problem.  Specifically, assertion failures have occurred during the
initialization phase of the X server on some hardware.

MFC after: 1 week
Discussed with: Kostik Belousov
Reported by: Michiel Boland
2008-02-24 18:03:56 +00:00
Kai Wang
47203048ab Handle properly when insert zero size objects into the archive:
Do not mmap 0-size objects and do not try to extract symbol from
0-size objects, but do treat 0-size objects as qualified objects and
accept them as an archive member. (A member with only the header part)

Note that GNU binutils ar on FreeBSD ignores 0-size objects, but on
Linux it accepts them. [1] But, since this is a rare usage, we can
safely ignore the compatibility issue.

Reported by:	Michael Plass <mfp49_freebsd [AT] plass-family [DOT] net>
Pointed out by: Michael Plass <mfp49_freebsd [AT] plass-family [DOT] net> [1]
Reviewed by:	Michael Plass <mfp49_freebsd [AT] plass-family [DOT] net>
Reviewed by:	jkoshy
Approved by:	jkoshy (mentor)
2008-02-24 17:57:29 +00:00
Marcel Moolenaar
72020fc2c1 Don't define DEBUG. No debugging required.
Pointy hat: marcel
2008-02-24 17:10:30 +00:00
Stefan Farfeleder
8e93904076 Forced commit to fix message:
Add a regression test for cd.c's revision 1.36.
2008-02-24 16:55:42 +00:00
Stefan Farfeleder
7cdc70f201 Add a regression test for cd.c's revision 1.35. 2008-02-24 16:52:02 +00:00
Stefan Farfeleder
55d2c5b573 Split updatepwd() into two smaller functions. The first one, findpwd(),
computes the new path and the second one, updatepwd(), updates the variables
PWD, OLDPWD and the path used for the pwd builtin according to the new
directory.  For a logical directory change, chdir() is now called between
those two functions, no longer causing wrong values to be stored in PWD etc. if
it fails.

PR:	64990, 101316, 120571
2008-02-24 16:50:55 +00:00
Attilio Rao
628f51d275 Introduce some functions in the vnode locks namespace and in the ffs
namespace in order to handle lockmgr fields in a controlled way instead
than spreading all around bogus stubs:
- VN_LOCK_AREC() allows lock recursion for a specified vnode
- VN_LOCK_ASHARE() allows lock sharing for a specified vnode

In FFS land:
- BUF_AREC() allows lock recursion for a specified buffer lock
- BUF_NOREC() disallows recursion for a specified buffer lock

Side note: union_subr.c::unionfs_node_update() is the only other function
directly handling lockmgr fields. As this is not simple to fix, it has
been left behind as "sole" exception.
2008-02-24 16:38:58 +00:00
Attilio Rao
93b651d88c Currently, smb_co_init() uses the same lock name for the mutex interlock
and the lockmgr. Use different names in order to avoid WITNESS conflicts.

Reported by:	Bryan Venteicher <bryanv at daemoninthecloset dot org>
2008-02-24 16:26:52 +00:00
Paolo Pisati
f94a7fc0b5 Add table/tablearg support to ipfw's nat.
MFC After: 1 week
2008-02-24 15:37:45 +00:00
Shunsuke Akiyama
54462c2410 o Add module event handler.
Now ucom kernel module can unload properly.
o Update copyright year.

PR:		usb/88966
MFC after:	1 week
2008-02-24 12:16:01 +00:00
Alexander Motin
510b772284 Fix shutdown bug made by previous commit. 2008-02-24 10:13:32 +00:00
Kip Macy
88e8506e22 Fix namespace collision with sparc macro 2008-02-24 07:19:31 +00:00
Mike Silbersack
ea346b19cc Change FreeBSD 7 so that it returns TCP options in
the same order that FreeBSD 6 and before did.  Doug
White and the other bloodhounds at ISC discovered that
while FreeBSD 7's ordering of options was more efficient,
it caused some cable modem routers to ignore the
SYN-ACKs ordered in this fashion.

The placement of sackOK after the timestamp option seems
to be the critical difference:

FreeBSD 6:
<mss 1460,nop,wscale 1,nop,nop,timestamp 3512155768 0,sackOK,eol>

FreeBSD 7.0:
<mss 1460,nop,wscale 3,sackOK,timestamp 1370692577 0>

FreeBSD 7.0 + this change:
<mss 1460,nop,wscale 3,nop,nop,timestamp 7371813 0,sackOK,eol>

MFC after: 1 week
2008-02-24 05:13:20 +00:00
Marcel Moolenaar
cebb2edba8 Resolve warnings exposed by LINT.
o  Put prototypes in a single header only.
o  Fix printf format specifiers.
2008-02-24 03:01:26 +00:00
Colin Percival
491869163b After finishing sending file data in sendfile(2), don't forget to send
the provided trailers.  This has been broken since revision 1.240.

Submitted by:	Dan Nelson
PR:		kern/120948
"sounds ok to me" from:	phk
MFC after:	3 days
2008-02-24 00:07:00 +00:00
Warner Losh
acebb585f7 The matching in -lname and -ilname are on the contents of the link
itself, not on the type of the file.  As such, do a readlink to get
the symbolic link's contents and fail to match if the path isn't a
symbolic link.

Pointed out by: des@
2008-02-24 00:01:06 +00:00
Marcel Moolenaar
c2602b5b06 Add prototype for __cmpd2(). 2008-02-23 22:40:05 +00:00
Marcel Moolenaar
eb9b8516f2 Add FPU_EMU. 2008-02-23 22:32:16 +00:00
Kip Macy
7c84f79070 remove call to kdb_backtrace() 2008-02-23 21:18:13 +00:00
Marcel Moolenaar
4bbf0886b3 Hook-up the FPU emulator. It's optional upon FPU_EMU. 2008-02-23 20:16:38 +00:00
Marcel Moolenaar
f7355c360b Bring back (without advertising clause) cmpdi2.c. It's needed on PowerPC
when the FP emulator is compiled-in.
2008-02-23 20:10:49 +00:00
Marcel Moolenaar
7e76048a69 Add a floating-point emulator so that a single userland or single ABI
can run on processors that don't have a FPU. This is typically the
case for Book E processors. While a tuned system will probably want
to use soft-float (or use a processor that has a FPU if the usage is
FP intensive enough), allowing hard-float on FPU-less systems gives
great portability and flexibility.

Obtained from: NetBSD
2008-02-23 20:05:26 +00:00
Marcel Moolenaar
859baed9a9 o Build and install the U-Boot loader as ubldr.
o  Don't build/install the manual pages or configuration
   files that are already installed by the OFW loader.
o  Hook the U-Boot loader to the build.
2008-02-23 19:45:20 +00:00
Marcel Moolenaar
8b4c4c1c72 style(9) commit. 2008-02-23 19:43:29 +00:00
Ruslan Ermilov
6d3d8d0eca Bump the default .Os version to FreeBSD 8.0. 2008-02-23 19:27:54 +00:00
Marcel Moolenaar
3802c8b6da Setup the new bootinfo structure.
While here, make local function static and update copyright.
2008-02-23 19:08:25 +00:00
Marcel Moolenaar
0f5615e325 o Keep running on U-Boot's stack.
o  Disable interrupts while not running U-Boot code. We clobber
   registers that the U-Boot interrupt handlers assume to be
   fixed as per the U-Boot register usage. At this time this only
   applies to r14. U-Boot uses r2 now for what they used r29 for.
   After we restore r14 in preparation of doing the syscall, we
   re-enable interrupts. When we return from the syscall, we
   disable interrupts and restore the callee-saved r14.
2008-02-23 18:42:53 +00:00
Marcel Moolenaar
f673ad04f5 The NFS file system support is conditional upon LOADER_NFS_SUPPORT,
not LOADER_NET_SUPPORT.
2008-02-23 18:36:13 +00:00
Marcel Moolenaar
e641a443f4 Add __elfN(relocation_offset). It holds the offset between the virtual
(link) address and the physical (load) address. Ideally, the mapping
between link and load addresses should be abstracted by the copyin(),
copyout() and readin() functions, so that we don't have to add kluges
in __elfN(loadimage)(). Then, we could also have paged virtual memory
for the kernel. This can be important under EFI, where you need to
allocate physical memory form the firmware if you want to work in all
scenarios.
2008-02-23 18:33:50 +00:00
Marcel Moolenaar
e1233a8bb7 Define the bootinfo structure for FreeBSD. It is not used on
AIM, but it's used for BookE.
2008-02-23 18:01:45 +00:00
Marcel Moolenaar
b8c02f17ea o Include glue.h
o  Support multiple memory regions.
2008-02-23 17:58:12 +00:00
Marcel Moolenaar
9dbb1b6e7d o Build libuboot with -msoft-float like everything else.
o  Move the API prototypes to a separate header (glue.h)
o  Allow the platform to hint libuboot about where to look
   for the API signature. The uboot_address variable is
   expected to be defined by the platform.
2008-02-23 17:56:17 +00:00
Marcel Moolenaar
719ea9c174 Add the appropriate license information. This file is double
licensed under GPL and BSD.

Thanks to: raj@
2008-02-23 17:52:30 +00:00