Commit Graph

183748 Commits

Author SHA1 Message Date
Konstantin Belousov
a677b31425 The vm_pageout_flush() functions sbusies pages in the passed pages
run.  After that, the pager put method is called, usually translated
to VOP_WRITE().  For the filesystems which use buffer cache,
bufwrite() sbusies the buffer pages again, waiting for the xbusy state
to drain.  The later is done in vfs_drain_busy_pages(), which is
called with the buffer pages already sbusied (by vm_pageout_flush()).

Since vfs_drain_busy_pages() can only wait for one page at the time,
and during the wait, the object lock is dropped, previous pages in the
buffer must be protected from other threads busying them.  Up to the
moment, it was done by xbusying the pages, that is incompatible with
the sbusy state in the new implementation of busy.  Switch to sbusy.

Reported and tested by:	pho
Sponsored by:	The FreeBSD Foundation
2013-09-05 12:56:08 +00:00
Konstantin Belousov
7a4b2bc56c The vm_page_trysbusy() should not fail when shared busy counter or
VPB_BIT_WAITERS flag were changed between reading of busy_lock and the
cas.  The vm_page_sbusy(), which is the only user of
vm_page_trysbusy() in the tree, panics on the failure, which in these
cases is transient and do not mean that the current page state
prevents sbusying.

Retry the operation inside vm_page_trysbusy() if cas failed, only
return a failure when VPB_BIT_SHARED is cleared.

Reported and tested by:	pho
Reviewed by:	attilio
Sponsored by:	The FreeBSD Foundation
2013-09-05 12:54:40 +00:00
Dag-Erling Smørgrav
187a8d4b7a authpf needs /var/authpf to exist and be writable by group authpf. 2013-09-05 12:35:23 +00:00
Hans Petter Selasky
5122043efe Correct two comments. 2013-09-05 12:21:11 +00:00
Pawel Jakub Dawidek
96a62209fb The fget() function now takes pointer to cap_rights_t, so change 0 to NULL. 2013-09-05 11:59:23 +00:00
Pawel Jakub Dawidek
ab568de789 Handle cases where capability rights are not provided.
Reported by:	kib
2013-09-05 11:58:12 +00:00
Gleb Smirnoff
2af0c790ec Fix !CAPABILITIES build. 2013-09-05 10:24:09 +00:00
Ruslan Bukin
c7e4729da4 Add support for DLINK DWA-127 Wireless Adapter
Approved by:	cognet (mentor)
2013-09-05 10:09:24 +00:00
Andrey V. Elsukov
87c0c612d8 Remove stub implementation.
MFC after:	1 week
2013-09-05 09:44:09 +00:00
Pawel Jakub Dawidek
44fcd367c5 Correct the logic broken in my last commit.
Reported by:	tijl
2013-09-05 09:36:19 +00:00
Andrey V. Elsukov
d983befd2f Remove unused code and sort variables declarations.
PR:		kern/181822
MFC after:	1 week
2013-09-05 08:12:36 +00:00
Alexander Motin
3d94c26efb Add more references.
Submitted by:	Dmitry Luhtionov <dmitryluhtionov@gmail.com>
MFC after:	1 week
2013-09-05 07:13:08 +00:00
Stefan Eßer
79d8aaa992 Fix file selection logic for the RCS/SCCS case, as was done for the simple
file case before. Bump version because of the changed behavior, which now
matches the documentation.

Reviewed by:	pfg
2013-09-05 05:51:15 +00:00
Sean Bruno
8e076eff36 Restore builds on architectures that don't support CAPABILITIES (mips). 2013-09-05 03:46:44 +00:00
Sean Bruno
88eb548859 This looks like a typo that breaks the build. Yell at me if this isn't the
intended declaration.
2013-09-05 03:36:57 +00:00
Justin Hibbits
995df27c66 Fix the build. 2013-09-05 01:13:26 +00:00
Pawel Jakub Dawidek
2057b58b17 Remove fallback to fork(2) if pdfork(2) is not available. If the parent
process dies, the process descriptor will be closed and pdfork(2)ed child
will be killed, which is not the case when regular fork(2) is used.

The PROCDESC option is now part of the GENERIC kernel configuration, so we
can start depending on it.

Add UPDATING entry to inform that this option is now required and log
detailed instruction to syslog if pdfork(2) is not available:

	The pdfork(2) system call is not available; recompile the kernel with options PROCDESC

Submitted by:	Mariusz Zaborski <oshogbo@FreeBSD.org>
Sponsored by:	Google Summer of Code 2013
2013-09-05 01:05:48 +00:00
Pawel Jakub Dawidek
7e473ea146 Add sysctl/tunables for various metaslab variables. 2013-09-05 00:53:01 +00:00
Pawel Jakub Dawidek
4877522e76 Advise a full buildworld, because of the recent Capsicum changes.
Sponsored by:	The FreeBSD Foundation
2013-09-05 00:52:16 +00:00
Pawel Jakub Dawidek
04ba6e5086 Add missing '2'. 2013-09-05 00:41:07 +00:00
Pawel Jakub Dawidek
f6474d7fdd Remove trailing comma. 2013-09-05 00:38:53 +00:00
Pawel Jakub Dawidek
a686a7be03 Style fixes. 2013-09-05 00:19:30 +00:00
Pawel Jakub Dawidek
547561f1b0 Style fixes. Most fixes are about not treating integers and pointers as
booleans.
2013-09-05 00:17:38 +00:00
Pawel Jakub Dawidek
00a7f703b3 Regenerate after r255219.
Sponsored by:	The FreeBSD Foundation
2013-09-05 00:11:59 +00:00
Pawel Jakub Dawidek
7008be5bd7 Change the cap_rights_t type from uint64_t to a structure that we can extend
in the future in a backward compatible (API and ABI) way.

The cap_rights_t represents capability rights. We used to use one bit to
represent one right, but we are running out of spare bits. Currently the new
structure provides place for 114 rights (so 50 more than the previous
cap_rights_t), but it is possible to grow the structure to hold at least 285
rights, although we can make it even larger if 285 rights won't be enough.

The structure definition looks like this:

	struct cap_rights {
		uint64_t	cr_rights[CAP_RIGHTS_VERSION + 2];
	};

The initial CAP_RIGHTS_VERSION is 0.

The top two bits in the first element of the cr_rights[] array contain total
number of elements in the array - 2. This means if those two bits are equal to
0, we have 2 array elements.

The top two bits in all remaining array elements should be 0.
The next five bits in all array elements contain array index. Only one bit is
used and bit position in this five-bits range defines array index. This means
there can be at most five array elements in the future.

To define new right the CAPRIGHT() macro must be used. The macro takes two
arguments - an array index and a bit to set, eg.

	#define	CAP_PDKILL	CAPRIGHT(1, 0x0000000000000800ULL)

We still support aliases that combine few rights, but the rights have to belong
to the same array element, eg:

	#define	CAP_LOOKUP	CAPRIGHT(0, 0x0000000000000400ULL)
	#define	CAP_FCHMOD	CAPRIGHT(0, 0x0000000000002000ULL)

	#define	CAP_FCHMODAT	(CAP_FCHMOD | CAP_LOOKUP)

There is new API to manage the new cap_rights_t structure:

	cap_rights_t *cap_rights_init(cap_rights_t *rights, ...);
	void cap_rights_set(cap_rights_t *rights, ...);
	void cap_rights_clear(cap_rights_t *rights, ...);
	bool cap_rights_is_set(const cap_rights_t *rights, ...);

	bool cap_rights_is_valid(const cap_rights_t *rights);
	void cap_rights_merge(cap_rights_t *dst, const cap_rights_t *src);
	void cap_rights_remove(cap_rights_t *dst, const cap_rights_t *src);
	bool cap_rights_contains(const cap_rights_t *big, const cap_rights_t *little);

Capability rights to the cap_rights_init(), cap_rights_set(),
cap_rights_clear() and cap_rights_is_set() functions are provided by
separating them with commas, eg:

	cap_rights_t rights;

	cap_rights_init(&rights, CAP_READ, CAP_WRITE, CAP_FSTAT);

There is no need to terminate the list of rights, as those functions are
actually macros that take care of the termination, eg:

	#define	cap_rights_set(rights, ...)				\
		__cap_rights_set((rights), __VA_ARGS__, 0ULL)
	void __cap_rights_set(cap_rights_t *rights, ...);

Thanks to using one bit as an array index we can assert in those functions that
there are no two rights belonging to different array elements provided
together. For example this is illegal and will be detected, because CAP_LOOKUP
belongs to element 0 and CAP_PDKILL to element 1:

	cap_rights_init(&rights, CAP_LOOKUP | CAP_PDKILL);

Providing several rights that belongs to the same array's element this way is
correct, but is not advised. It should only be used for aliases definition.

This commit also breaks compatibility with some existing Capsicum system calls,
but I see no other way to do that. This should be fine as Capsicum is still
experimental and this change is not going to 9.x.

Sponsored by:	The FreeBSD Foundation
2013-09-05 00:09:56 +00:00
Justin T. Gibbs
c70fe93ad8 Correct blkback handling of the BLKIF_OP_FLUSH_DISKCACHE opcode.
Properly round-trip the "operation code" for client requests.

sys/dev/xen/blkback/blkback.c:
	In xbb_dispatch_dev() when processing a flush request,
	correctly set bio->bio_caller1 to the request list (not
	bare request) for the operation, as is expected by the
	completion handler xbb_bio_done().

	In xbb_get_resources(), initialize "operation" in the
	driver's internal request object from the client's "ring
	request", so it is correct when used to populate the reply
	when this operation completes.

Submitted by:	Roger Pau Monné
Sponsored by:	Citrix Systems R&D
Reviewed by:	gibbs
2013-09-04 23:32:49 +00:00
Konstantin Belousov
6aceaa3e17 Tidy up some loose ends in the PCID code:
- Restore the pre-PCID TLB shootdown handlers for whole address space
  and single page invalidation asm code, and assign the IPI handler to
  them when PCID is not supported or disabled.  Old handlers have
  linear control flow.  But, still use the common return sequence.

- Stop using pcpu for INVPCID descriptors in the invlrg handler.  It
  is enough to allocate descriptors on the stack.  As result, two
  SWAPGS instructions are shaved off from the code for Haswell+.

- Fix the reverted condition in invlrng for checking of the PCID
  support [1], also in invlrng check that pmap is kernel pmap before
  performing other tests.  For the kernel pmap, which provides global
  mappings, the INVLPG must be used for invalidation always.

- Save the pre-computed pmap' %CR3 register in the struct pmap.  This
  allows to remove several checks for pm_pcid validity when %CR3 is
  reloaded [2].

Noted by:   gibbs [1]
Discussed with:	alc [2]
Tested by:	pho, flo
Sponsored by:	The FreeBSD Foundation
2013-09-04 23:31:29 +00:00
Rick Macklem
f7d8291af0 Crashes have been observed for NFSv4.1 mounts when the system
is being shut down which were caused by the nfscbd_pool being
destroyed before the backchannel is disabled. This patch is
believed to fix the problem, by simply avoiding ever destroying
the nfscbd_pool. Since the NFS client module cannot be unloaded,
this should not cause a memory leak.

MFC after:	2 weeks
2013-09-04 22:47:56 +00:00
Jilles Tjoelker
2935c4cc5e sh: Make return return from the closest function or dot script.
Formerly, return always returned from a function if it was called from a
function, even if there was a closer dot script. This was for compatibility
with the Bourne shell which only allowed returning from functions.

Other modern shells and POSIX return from the function or the dot script,
whichever is closest.

Git 1.8.4's rebase --continue depends on the POSIX behaviour.

Reported by:	Christoph Mallon, avg
2013-09-04 22:10:16 +00:00
Zbigniew Bodek
dbbd7a968b Add myself as a new committer and cognet as my mentor.
Approved by:	cognet (mentor)
2013-09-04 20:49:32 +00:00
Oleksandr Tymoshenko
3b15395e04 Add 32-bit support for Gxemul's oldtestmips machine emulation
Original work by: kan@
2013-09-04 20:34:36 +00:00
George V. Neville-Neil
a9e5c5a364 Add myself to the list of ports committers.
Approved by: skreuzer (mentor)
2013-09-04 20:12:33 +00:00
Eitan Adler
4c8d7275a4 Revert r255152:
It turns out that synaptics_support was turned off by default
because its probing method is too intrusive not because it was unstable.

Once this is fixed it should be enabled once again.

Reported by:	delphij, jkim
2013-09-04 18:42:05 +00:00
John-Mark Gurney
7f3bdd0831 add links for the various vmem functions... 2013-09-04 17:48:41 +00:00
Brooks Davis
f43581345b MFP4 217312, 222008, 222052, 222053, 222673, 231484, 231491, 231565, 570643
Rework the timeout code to use actual time rather than a DELAY() loop and
to use both typical and maximum to allow logging of timeout failures.
Also correct the erase timeout, it is specified in milliseconds not
microseconds like the other timeouts.  Do not invoke DELAY() between
status queries as this adds significant latency which in turn reduced
write performance substantially.

Sanity check timeout values from the hardware.

Implement support for buffered writes (only enabled on Intel/Sharp parts
for now).  This yields an order of magnitude speedup on the 64MB Intel
StrataFlash parts we use.

When making a copy of the block to modify, also keep a clean copy around
until we are ready to commit the block and use it to avoid unnecessary
erases.  In the non-buffer write case, also use it to avoid
unnecessary writes when the block has not been erased.  This yields a
significant speedup when doing things like zeroing a block.

Sponsored by:	DARPA, AFRL
Reviewed by:	imp (previous version)
2013-09-04 17:19:21 +00:00
David Chisnall
c354d333b2 Add a c++/v1/tr1 include directory containing symlinks to all of the standard
headrs.

Lots of third-party code expects to find C++03 headers under tr1 because that's
where GNU decided to hide them.  This should fix ports that expect them there.

MFC after:	1 week
2013-09-04 15:02:14 +00:00
John Baldwin
5396f9ec5a Trim a couple of panic messages. 2013-09-04 11:52:28 +00:00
Ruslan Bukin
908ea20751 - Add myself as a src committer
- Note cognet is my mentor

Approved by:	cognet (mentor)
2013-09-04 11:28:47 +00:00
Gleb Smirnoff
5185640523 Make default cache size more modern.
Requested by:	Slawa Olhovchenkov <slw zxy.spb.ru>
2013-09-04 10:17:50 +00:00
Justin Hibbits
177f0102f4 Fix hwpmc(4) for 32-bit PowerPC. 2013-09-04 04:11:38 +00:00
Navdeep Parhar
4f641559c7 For TOE connections, the window scale factor in CPL_PASS_ACCEPT_REQ is
set to 15 to indicate that the peer did not send a window scale option
with its SYN.  Do not send a window scale option in the SYN|ACK reply
in that case.
2013-09-03 23:34:04 +00:00
Sean Bruno
2b2cd594f5 Add options GEOM_PART_GPT and options MSDOSFS to the DIR-825
Reviewed by:	adrian@
2013-09-03 22:33:06 +00:00
Warner Losh
ce7c952a8e Newer versions of gcc define __INT64_C and __UINT64_C, so avoid
redefining them if gcc provides them.
2013-09-03 22:04:55 +00:00
John Baldwin
dffe0dc4d2 Add support for the 'invpcid' instruction to binutils and DDB's
disassembler on amd64.

MFC after:	1 month
2013-09-03 21:21:47 +00:00
Pedro F. Giffuni
d3e23b57a1 Remove our hacked GNU patch.
The old (2.1) GNU patch has outlived its days.  The major
local changes have been moved into the less restrictedly
licensed patch(1) we adopted in usr.bin/ .

A much newer version of GNU patch is available in the
ports tree (devel/patch).

Disconnect from the build and remove.
2013-09-03 20:03:10 +00:00
Michael Tuexen
0ddb429900 Remove redundant field pr_sctp_on.
MFC after: 1 week
2013-09-03 19:31:59 +00:00
John-Mark Gurney
ff6c7bf5ca Use the fact that the AES-NI instructions can be pipelined to improve
performance... Use SSE2 instructions for calculating the XTS tweek
factor...  Let the compiler do more work and handle register allocation
by using intrinsics, now only the key schedule is in assembly...

Replace .byte hard coded instructions w/ the proper instructions now
that both clang and gcc support them...

On my machine, pulling the code to userland I saw performance go from
~150MB/sec to 2GB/sec in XTS mode.  GELI on GNOP saw a more modest
increase of about 3x due to other system overhead (geom and
opencrypto)...

These changes allow almost full disk io rate w/ geli...

Reviewed by:	-current, -security
Thanks to:	Mike Hamburg for the XTS tweek algorithm
2013-09-03 18:31:23 +00:00
John-Mark Gurney
003f0fa63f add support to gcc for AES and PCLMUL intrinsics... This addes the
-maes option, but not the -mpclmul option as I ran out of bits in
the 32 bit flags field...  You can -D__PCLMUL__ to get this, but it
won't be compatible w/ clang and modern gcc...

Reviewed by:	-current, -toolchain
2013-09-03 17:33:29 +00:00
Ed Maste
4b1fb8ff16 Connect libexecinfo to the build
Sponsored by:	DARPA, AFRL
2013-09-03 15:22:04 +00:00
Justin T. Gibbs
b72c9b0afd sys/dev/xen/blkback/blkback.c:
Initialize the request id for requests in xbb_get_resources()
	instead of its previous location in xbb_dispatch_io().  This
	guarantees that all request types (e.g. BLKIF_OP_FLUSH_DISKCACHE)
	have the front-end specified id recorded.

Submitted by:	Roger Pau Monné
Sponsored by:	Citrix Systems R&D
2013-09-03 13:49:00 +00:00