Commit Graph

201251 Commits

Author SHA1 Message Date
Simon J. Gerraty
1fc3d968ac Since sys.mk now handles META_MODE and META_FILES options
we need not worry about them here.
Checking for .PARSEDIR no longer needed.
2015-06-10 13:08:45 +00:00
Ruslan Bukin
3e0bfdd882 o Rework ARMv7 events list using aliases - same way as we have for arm64.
o Extend it with Cortex A9-specific events.
2015-06-10 12:42:30 +00:00
Mateusz Guzik
21de5aea6c Fixup the build after r284215.
Submitted by:	Ivan Klymenko <fidaj ukr.net> [slighly modified]
2015-06-10 12:39:01 +00:00
Mateusz Guzik
f6f6d24062 Implement lockless resource limits.
Use the same scheme implemented to manage credentials.

Code needing to look at process's credentials (as opposed to thred's) is
provided with *_proc variants of relevant functions.

Places which possibly had to take the proc lock anyway still use the proc
pointer to access limits.
2015-06-10 10:48:12 +00:00
Mateusz Guzik
4ea6a9a28f Generalised support for copy-on-write structures shared by threads.
Thread credentials are maintained as follows: each thread has a pointer to
creds and a reference on them. The pointer is compared with proc's creds on
userspace<->kernel boundary and updated if needed.

This patch introduces a counter which can be compared instead, so that more
structures can use this scheme without adding more comparisons on the boundary.
2015-06-10 10:43:59 +00:00
Ruslan Bukin
8bd0e17595 Don't re-define LOCORE when dtrace is built-in to the kernel. 2015-06-10 09:59:26 +00:00
Mateusz Guzik
3b3eb22ab6 fd: remove fdesc_mtx 2015-06-10 09:40:07 +00:00
Mateusz Guzik
153cc61b54 fd: use atomics to manage fd_refcnt and fd_holcnt
This gets rid of fdesc_mtx.
2015-06-10 09:34:50 +00:00
Simon J. Gerraty
ee10d8d237 Remove extra line 2015-06-10 05:39:48 +00:00
Simon J. Gerraty
fbeda970cf remove extra line 2015-06-10 05:39:06 +00:00
Simon J. Gerraty
13172aa205 Removed extra line 2015-06-10 05:30:13 +00:00
Alan Cox
5cd7a4f76c Correct a type error in kmem_unback(). Previously, kmem_unback() did not
correctly handle deallocation requests of two or more gigabytes in size.
Eventually, this would lead to a panic elsewhere in the kernel, such as
"vm_radix_insert: key <vm_pindex_t> is already present".

Reported by:	Ilias Marinos
MFC after:	1 week
2015-06-10 05:17:14 +00:00
Simon J. Gerraty
1f1f6146ca Explain why NO_BEFOREBUILD_INCLUDES is needed 2015-06-10 04:57:09 +00:00
Marcel Moolenaar
52e4a08c45 Convert ls(1) to use libxo(3).
Obtained from:	Phil Shafer <phil@juniper.net>
Sponsored by:	Juniper Networks, Inc.
2015-06-10 01:27:38 +00:00
Zbigniew Bodek
458f2175ca Add options to dmb() and dsb() macros on ARM64
Using plain dsb()/dmb() as full system barriers is usually to much.
Adding proper options to those barriers (instead of full system - sy)
will most likely reduce the cost of the instructions and will benefit
in performance improvement.
This commit adds options to barrier macro definitions.

Obtained from: Semihalf
Reviewed by:   andrew, ian
Sponsored by:  The FreeBSD Foundation
2015-06-09 23:54:20 +00:00
Jung-uk Kim
9ae8e0064a Check status of AcpiReadBitRegister() calls.
Reported by:	Coverity
CID:		1306132
2015-06-09 23:13:37 +00:00
Kenneth D. Merry
5672fac935 Add support for reading MAM attributes to camcontrol(8) and libcam(3).
MAM is Medium Auxiliary Memory and is most commonly found as flash
chips on tapes.

This includes support for reading attributes and decoding most
known attributes, but does not yet include support for writing
attributes or reporting attributes in XML format.

libsbuf/Makefile:
	Add subr_prf.c for the new sbuf_hexdump() function.  This
	function is essentially the same function.

libsbuf/Symbol.map:
	Add a new shared library minor version, and include the
	sbuf_hexdump() function.

libsbuf/Version.def:
	Add version 1.4 of the libsbuf library.

libutil/hexdump.3:
	Document sbuf_hexdump() alongside hexdump(3), since it is
	essentially the same function.

camcontrol/Makefile:
	Add attrib.c.

camcontrol/attrib.c:
	Implementation of READ ATTRIBUTE support for camcontrol(8).

camcontrol/camcontrol.8:
	Document the new 'camcontrol attrib' subcommand.

camcontrol/camcontrol.c:
	Add the new 'camcontrol attrib' subcommand.

camcontrol/camcontrol.h:
	Add a function prototype for scsiattrib().

share/man/man9/sbuf.9:
	Document the existence of sbuf_hexdump() and point users to
	the hexdump(3) man page for more details.

sys/cam/scsi/scsi_all.c:
	Add a table of known attributes, text descriptions and
	handler functions.

	Add a new scsi_attrib_sbuf() function along with a number
	of other related functions that help decode attributes.

	scsi_attrib_ascii_sbuf() decodes ASCII format attributes.

	scsi_attrib_int_sbuf() decodes binary format attributes, and
	will pass them off to scsi_attrib_hexdump_sbuf() if they're
	bigger than 8 bytes.

	scsi_attrib_vendser_sbuf() decodes the vendor and drive
	serial number attribute.

	scsi_attrib_volcoh_sbuf() decodes the Volume Coherency
	Information attribute that LTFS writes out.

sys/cam/scsi/scsi_all.h:
	Add a number of attribute-related structure definitions and
	other defines.

	Add function prototypes for all of the functions added in
	scsi_all.c.

sys/kern/subr_prf.c:
	Add a new function, sbuf_hexdump().  This is the same as
	the existing hexdump(9) function, except that it puts the
	result in an sbuf.

	This also changes subr_prf.c so that it can be compiled in
	userland for includsion in libsbuf.

	We should work to change this so that the kernel hexdump
	implementation is a wrapper around sbuf_hexdump() with a
	statically allocated sbuf with a drain.  That will require
	a drain function that goes to the kernel printf() buffer
	that can take a non-NUL terminated string as input.
	That is because an sbuf isn't NUL-terminated until it is
	finished, and we don't want to finish it while we're still
	using it.

	We should also work to consolidate the userland hexdump and
	kernel hexdump implemenatations, which are currently
	separate.  This would also mean making applications that
	currently link in libutil link in libsbuf.

sys/sys/sbuf.h:
	Add the prototype for sbuf_hexdump(), and add another copy
	of the hexdump flag values if they aren't already defined.

	Ideally the flags should be defined in one place but the
	implemenation makes it difficult to do properly.  (See
	above.)

Sponsored by:	Spectra Logic Corporation
MFC after:	1 week
2015-06-09 21:39:38 +00:00
Maxim Sobolev
1ab62874ae "status_reg.acpwr ? 1 : 0" is now the same as just "status_reg.acpwr". 2015-06-09 19:22:13 +00:00
Maxim Sobolev
02f4627c40 Fix a typo in a comment that has been carried over from am335x_pmic.c. 2015-06-09 19:17:33 +00:00
Maxim Sobolev
019098cfd4 Use tab to do identation consistently. 2015-06-09 19:04:55 +00:00
Maxim Sobolev
8054d7cc0d Extend TPS65217 support to be able to pull and decode battery
charger configuration and provide some basic control knobs to
set charger voltage and dump config on boot. Two loader tunables
have been added:

 o hw.am335x_pmic.bootverbose set to 1 to get more info on the
   boot;

 o hw.am335x_pmic.vo: set to charger voltage to be applied on
   kernel initialization time, supported values are "4.10V",
   "4.15V", "4.20V" and "4.25V".

Cleanup code a bit in general, move TPS65217 register
definitions into a separate header, convert bit-banging
defines into bitmap structures.

Also threat the case when power source is neither "AC" nor "USB"
as "Battery", not "Unknown".
2015-06-09 18:46:31 +00:00
Alan Cox
65a9768f62 Account for superpage mappings that are created by pmap_copy(). 2015-06-09 18:04:28 +00:00
Doug Ambrisko
b5c5032066 Switch from make_dev_alias to make_dev_alias_p since make_dev_alias_p can
gracefully fail if the /dev/megaraid_sas_ioctl_node symlink already exists.
This can happen if mfi(4) and mrsas(4) are both attached to cards and
providing Linux emulation support.  Let the first one win.  An equivalent
change needs to be done to mrsas(4).  Extra credit would be to pass the
Linux emulation call to the other driver when appropriate.  This will
probably be a rare case and the user can manually change where the symlink
points to.

MFC after:	3 days
2015-06-09 15:51:11 +00:00
Sean Bruno
5296d0421e Include opt_em.h now that there are actual kernel compile options for em(4).
Submitted by:	jfv
MFC after:	2 week
Sponsored by:	Limelight Networks
2015-06-09 14:31:18 +00:00
Konstantin Belousov
2c6946dca2 When updating/accessing the timehands, barriers are needed to ensure
that:
- th_generation update is visible after the parameters update is
  visible;
- the read of parameters is not reordered before initial read of
  th_generation.

On UP kernels, compiler barriers are enough.  For SMP machines, CPU
barriers must be used too, as was confirmed by submitter by testing on
the Freescale T4240 platform with 24 PowerPC processors.

Submitted by:	Sebastian Huber <sebastian.huber@embedded-brains.de>
MFC after:	1 week
2015-06-09 11:49:56 +00:00
John Baldwin
125954c873 Handle X2APIC entries in the MADT for APICs with an ID < 255. At least one
BIOS has been seen to include such entries even though the relevant specs
require that X2APIC entries only be used for CPUs with an APIC ID >= 255.

This was tested on a system with "plain" local APIC entries in the MADT
to ensure no regressions, but it has not yet been tested on a system with
X2APIC entries in the MADT.  Currently such systems do not boot at all,
and with this change they might now boot correctly.

Differential Revision:	https://reviews.freebsd.org/D2521
Reviewed by:	kib
MFC after:	2 weeks
2015-06-09 10:49:40 +00:00
Tycho Nightingale
277bdd9950 Support guest writes to the TSC by enabling the "use TSC offsetting"
execution control and writing the difference between the host TSC and
the guest TSC into the TSC offset in the VMCS upon encountering a
write.

Reviewed by:	neel
2015-06-09 00:14:47 +00:00
Simon J. Gerraty
87750562a1 Avoid bogus MLINKS when MK_LZMA_SUPPORT=yes and MK_BSD_GREP=no 2015-06-08 23:37:17 +00:00
Simon J. Gerraty
44d314f704 dirdeps.mk now sets DEP_RELDIR 2015-06-08 23:35:17 +00:00
Simon J. Gerraty
6251c65a82 Latest dirdeps.mk sets DEP_RELDIR for itself.
This helps guard against bugs in manually edited Makefile.depend
files, and avoids the need to call realpath from the Makefile.depend file.
2015-06-08 23:34:04 +00:00
Simon J. Gerraty
924b88f687 Watchout for bogus MAN 2015-06-08 23:32:27 +00:00
Marcel Moolenaar
cbb052dd3e Map the allocated DMA memory into the address space. 2015-06-08 22:01:34 +00:00
Marcel Moolenaar
cff0f135c1 Implement mmap(2) for the busdma resource. 2015-06-08 21:47:44 +00:00
Dimitry Andric
90acdcbc88 Merge r283870 from amd64:
Remove unneeded NULL checks in trap_fatal().

Since td_name is an array member of struct thread, it can never be NULL,
so the check can be removed.  In addition, curproc can never be NULL,
so remove the if statement, and splice the two printfs() together.

While here, remove the u_long cast, and use the correct printf format
specifier for curproc->p_pid.

Requested by:	jhb
MFC after:	3 days
2015-06-08 20:12:44 +00:00
Jung-uk Kim
1a01bdf906 Properly initialize flags for accept4(2) not to return spurious EINVAL.
Note this fixes a Linuxulator regression introduced in r283490.

PR:		200662
2015-06-08 20:03:15 +00:00
Marcel Moolenaar
529b5c137e Move contrib/top/top.X to contrib/top/top.xs and move
contrib/top/top.local.H to contrib/top/top.local.hs.
This fixes a build breakage when src is on a case-
insensitive file system -- we never properly create
top.x nor top.local.h. Change the makefile accordingly.

MFC after:	3 days
2015-06-08 19:45:24 +00:00
Bryan Drewery
724fd44827 Cleanup some style(9) issues.
- Whitespace.
- Comments.
- Wrap long lines.

MFC after:	2 weeks
X-MFC-with:	r284105,r284106
Sponsored by:	EMC / Isilon Storage Division
2015-06-08 19:24:18 +00:00
Xin LI
183714f3f7 It has been long time that when doing 'ls -G /path/to/a/symlink', instead of
using the color of symbolic link, the color is determined by the link target.
This behavior was quite confusing.

Looking at the file history, it looks like that r203665 intends to fix this
but the issue was never actually fixed.

Fix this by not setting FTS_COMFOLLOW when color is requested like what was
done in r203665.

MFC after:	2 weeks
2015-06-08 19:13:04 +00:00
John Baldwin
15c2b30155 Revert r284153, as I believe it breaks the dtrace sdt module. I will
fix the original issue a different way.
2015-06-08 18:06:00 +00:00
Dmitry Chagin
c2bc5b15eb Futex is an aligned 32-bit integer. Use the proper instruction and
operand when dereferencing futex pointer.
2015-06-08 17:39:25 +00:00
Ed Maste
6b16d66497 Add user facing errors for exceeding process memory limits
Previously the process terminating with SIGABRT at startup was the
only notification.

PR:		200617
Reviewed by:	kib
Sponsored by:	The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D2731
2015-06-08 16:07:07 +00:00
John Baldwin
69c5c774fe Add an internal "locked" variant of linker_file_lookup_set() and change
the public function to acquire the global linker lock directly.  This
permits linker_file_lookup_set() to be safely used from other modules.
2015-06-08 14:06:47 +00:00
Andrey V. Elsukov
fcdb1ffc49 Add makefile to build geom_map kld. Document some GEOM_* options
in NOTES and geom(4).
2015-06-08 13:23:56 +00:00
Andrey V. Elsukov
e7d0c7e458 Teach G_PART_GPT class to handle g_resize_provider event.
MFC after:	10 days
2015-06-08 12:52:41 +00:00
Baptiste Daroussin
3bfc59e83b backout remove of -q option for pw [user|group] next
While the return code is broken, some corner case usage depends on the
functionnality, so backout until we get better regression tests covering those
corner case usage.
2015-06-08 05:27:34 +00:00
Baptiste Daroussin
6328a4be57 Fix typo 2015-06-08 05:06:17 +00:00
Alan Cox
966272ca33 Retire VM_FREEPOOL_CACHE as the next step in eliminating PG_CACHE pages.
Differential Revision:	https://reviews.freebsd.org/D2712
Reviewed by:	kib
Sponsored by:	EMC / Isilon Storage Division
2015-06-08 04:59:32 +00:00
Marcel Moolenaar
6f769b730c Add busdma_mem_alloc & busdma_mem_free. 2015-06-08 03:23:20 +00:00
Adrian Chadd
5b53111b63 Cope with .. less memory. 2015-06-08 03:01:19 +00:00
Marcel Moolenaar
5dcca8e800 Add DMA memory allocation and freeing.
Slightly rework the tag handling.
2015-06-08 03:00:36 +00:00