04 Jul, 2006
3 commits
-
Introduce DEBUG_LOCKING_API_SELFTESTS, which uses the generic lock debugging
code's silent-failure feature to run a matrix of testcases. There are 210
testcases currently:+-----------------------
| Locking API testsuite:
+------------------------------+------+------+------+------+------+------+
| spin |wlock |rlock |mutex | wsem | rsem |
-------------------------------+------+------+------+------+------+------+
A-A deadlock: ok | ok | ok | ok | ok | ok |
A-B-B-A deadlock: ok | ok | ok | ok | ok | ok |
A-B-B-C-C-A deadlock: ok | ok | ok | ok | ok | ok |
A-B-C-A-B-C deadlock: ok | ok | ok | ok | ok | ok |
A-B-B-C-C-D-D-A deadlock: ok | ok | ok | ok | ok | ok |
A-B-C-D-B-D-D-A deadlock: ok | ok | ok | ok | ok | ok |
A-B-C-D-B-C-D-A deadlock: ok | ok | ok | ok | ok | ok |
double unlock: ok | ok | ok | ok | ok | ok |
bad unlock order: ok | ok | ok | ok | ok | ok |
--------------------------------------+------+------+------+------+------+
recursive read-lock: | ok | | ok |
--------------------------------------+------+------+------+------+------+
non-nested unlock: ok | ok | ok | ok |
--------------------------------------+------+------+------+
hard-irqs-on + irq-safe-A/12: ok | ok | ok |
soft-irqs-on + irq-safe-A/12: ok | ok | ok |
hard-irqs-on + irq-safe-A/21: ok | ok | ok |
soft-irqs-on + irq-safe-A/21: ok | ok | ok |
sirq-safe-A => hirqs-on/12: ok | ok | ok |
sirq-safe-A => hirqs-on/21: ok | ok | ok |
hard-safe-A + irqs-on/12: ok | ok | ok |
soft-safe-A + irqs-on/12: ok | ok | ok |
hard-safe-A + irqs-on/21: ok | ok | ok |
soft-safe-A + irqs-on/21: ok | ok | ok |
hard-safe-A + unsafe-B #1/123: ok | ok | ok |
soft-safe-A + unsafe-B #1/123: ok | ok | ok |
hard-safe-A + unsafe-B #1/132: ok | ok | ok |
soft-safe-A + unsafe-B #1/132: ok | ok | ok |
hard-safe-A + unsafe-B #1/213: ok | ok | ok |
soft-safe-A + unsafe-B #1/213: ok | ok | ok |
hard-safe-A + unsafe-B #1/231: ok | ok | ok |
soft-safe-A + unsafe-B #1/231: ok | ok | ok |
hard-safe-A + unsafe-B #1/312: ok | ok | ok |
soft-safe-A + unsafe-B #1/312: ok | ok | ok |
hard-safe-A + unsafe-B #1/321: ok | ok | ok |
soft-safe-A + unsafe-B #1/321: ok | ok | ok |
hard-safe-A + unsafe-B #2/123: ok | ok | ok |
soft-safe-A + unsafe-B #2/123: ok | ok | ok |
hard-safe-A + unsafe-B #2/132: ok | ok | ok |
soft-safe-A + unsafe-B #2/132: ok | ok | ok |
hard-safe-A + unsafe-B #2/213: ok | ok | ok |
soft-safe-A + unsafe-B #2/213: ok | ok | ok |
hard-safe-A + unsafe-B #2/231: ok | ok | ok |
soft-safe-A + unsafe-B #2/231: ok | ok | ok |
hard-safe-A + unsafe-B #2/312: ok | ok | ok |
soft-safe-A + unsafe-B #2/312: ok | ok | ok |
hard-safe-A + unsafe-B #2/321: ok | ok | ok |
soft-safe-A + unsafe-B #2/321: ok | ok | ok |
hard-irq lock-inversion/123: ok | ok | ok |
soft-irq lock-inversion/123: ok | ok | ok |
hard-irq lock-inversion/132: ok | ok | ok |
soft-irq lock-inversion/132: ok | ok | ok |
hard-irq lock-inversion/213: ok | ok | ok |
soft-irq lock-inversion/213: ok | ok | ok |
hard-irq lock-inversion/231: ok | ok | ok |
soft-irq lock-inversion/231: ok | ok | ok |
hard-irq lock-inversion/312: ok | ok | ok |
soft-irq lock-inversion/312: ok | ok | ok |
hard-irq lock-inversion/321: ok | ok | ok |
soft-irq lock-inversion/321: ok | ok | ok |
hard-irq read-recursion/123: ok |
soft-irq read-recursion/123: ok |
hard-irq read-recursion/132: ok |
soft-irq read-recursion/132: ok |
hard-irq read-recursion/213: ok |
soft-irq read-recursion/213: ok |
hard-irq read-recursion/231: ok |
soft-irq read-recursion/231: ok |
hard-irq read-recursion/312: ok |
soft-irq read-recursion/312: ok |
hard-irq read-recursion/321: ok |
soft-irq read-recursion/321: ok |
--------------------------------+-----+----------------
Good, all 210 testcases passed! |
--------------------------------+Signed-off-by: Ingo Molnar
Signed-off-by: Arjan van de Ven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add Documentation/irqflags-tracing.txt.
Signed-off-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
It turns out that it is advantageous to leave a small portion of unmapped file
backed pages if all of a zone's pages (or almost all pages) are allocated and
so the page allocator has to go off-node.This allows recently used file I/O buffers to stay on the node and
reduces the times that zone reclaim is invoked if file I/O occurs
when we run out of memory in a zone.The problem is that zone reclaim runs too frequently when the page cache is
used for file I/O (read write and therefore unmapped pages!) alone and we have
almost all pages of the zone allocated. Zone reclaim may remove 32 unmapped
pages. File I/O will use these pages for the next read/write requests and the
unmapped pages increase. After the zone has filled up again zone reclaim will
remove it again after only 32 pages. This cycle is too inefficient and there
are potentially too many zone reclaim cycles.With the 1% boundary we may still remove all unmapped pages for file I/O in
zone reclaim pass. However. it will take a large number of read and writes
to get back to 1% again where we trigger zone reclaim again.The zone reclaim 2.6.16/17 does not show this behavior because we have a 30
second timeout.[akpm@osdl.org: rename the /proc file and the variable]
Signed-off-by: Christoph Lameter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
03 Jul, 2006
2 commits
-
Signed-off-by: Thomas Gleixner
Cc: Ingo Molnar
Cc: "David S. Miller"
Cc: Benjamin Herrenschmidt
Cc: "Randy.Dunlap"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The recent interrupt rework introduced bit value conflicts with sparc.
Instead of introducing new architecture flags mess, move the interrupt SA_
flags out of the signal namespace and replace them by interrupt related flags.This allows to remove the obsolete SA_INTERRUPT flag and clean up the bit
field values.This patch:
Move the interrupt related SA_ flags out of linux/signal.h and rename them to
IRQF_ . This moves the interrupt related flags out of the signal namespace
and allows to remove the architecture dependencies.SA_INTERRUPT is not needed by userspace and glibc so it can be removed safely.
The existing SA_ constants are kept for easy transition and will be
removed after a 6 month grace period.Signed-off-by: Thomas Gleixner
Cc: Ingo Molnar
Cc: "David S. Miller"
Cc: Benjamin Herrenschmidt
Cc: "Randy.Dunlap"
Cc: Jaroslav Kysela
Cc: Takashi Iwai
Cc: "Antonino A. Daplas"
Cc: Greg KH
Cc: Russell King
Cc: James Bottomley
Cc: Kyle McMartin
Cc: Jeff Garzik
Cc: Mauro Carvalho Chehab
Cc: Karsten Keil
Cc: Jody McIntyre
Cc: Ben Collins
Cc: Stefan Richter
Cc: Alan Cox
Cc: Bartlomiej Zolnierkiewicz
Cc: Dave Airlie
Cc: Jens Axboe
Cc: Chris Zankel
Cc: Andi Kleen
Cc: Miles Bader
Cc: Jeff Dike
Cc: Paolo 'Blaisorblade' Giarrusso
Cc: Paul Mundt
Cc: Kazumoto Kojima
Cc: Martin Schwidefsky Cc: Heiko Carstens
Cc: Ralf Baechle
Cc: Roman Zippel
Cc: Geert Uytterhoeven
Cc: Greg Ungerer
Cc: "Luck, Tony"
Cc: Yoshinori Sato
Cc: David Howells
Cc: Mikael Starvik
Cc: Russell King
Cc: Ivan Kokshaysky
Cc: Richard Henderson
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
01 Jul, 2006
12 commits
-
* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial:
Remove obsolete #include
remove obsolete swsusp_encrypt
arch/arm26/Kconfig typos
Documentation/IPMI typos
Kconfig: Typos in net/sched/Kconfig
v9fs: do not include linux/version.h
Documentation/DocBook/mtdnand.tmpl: typo fixes
typo fixes: specfic -> specific
typo fixes in Documentation/networking/pktgen.txt
typo fixes: occuring -> occurring
typo fixes: infomation -> information
typo fixes: disadvantadge -> disadvantage
typo fixes: aquire -> acquire
typo fixes: mecanism -> mechanism
typo fixes: bandwith -> bandwidth
fix a typo in the RTC_CLASS help text
smb is no longer maintainedManually merged trivial conflict in arch/um/kernel/vmlinux.lds.S
-
* git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6/:
[PATCH] pcmcia: fix deadlock in pcmcia_parse_events
[PATCH] com20020_cs: more device support
[PATCH] au1xxx: pcmcia: fix __init called from non-init
[PATCH] kill open-coded offsetof in cm4000_cs.c ZERO_DEV()
[PATCH] pcmcia: convert pcmcia_cs to kthread
[PATCH] pcmcia: fix kernel-doc function name
[PATCH] pcmcia: hostap_cs.c - 0xc00f,0x0000 conflicts with pcnet_cs
[PATCH] pcmcia: at91_cf suspend/resume/wakeup
[PATCH] pcmcia: Make ide_cs work with the memory space of CF-Cards if IO space is not available
[PATCH] pcmcia: TI PCIxx12 CardBus controller support
[PATCH] pcmcia: warn if driver requests exclusive, but gets a shared IRQ
[PATCH] pcmcia: expose tool in pcmcia/Documentation/pcmcia/
[PATCH] pcmcia: another ID for serial_cs.c
[PATCH] yenta: fix hidden PCI bus numbers
[PATCH] yenta: do power-up only after socket is configured -
Expose example and tool source files in the Documentation/ directory in
their own files instead of being buried (almost hidden) in readme/txt files.This will make them more visible/usable to users who may need
to use them, to developers who may need to test with them, and
to janitors who would update them if they were more visible.Also, if any of these possibly should not be in the kernel tree at
all, it will be clearer that they are here and we can discuss if
they should be removed.Signed-off-by: Randy Dunlap
Signed-off-by: Dominik Brodowski -
This patch adds support for the Geniatech Digistar, aka
Digiwave 103g DVB-S card.
Acked-by: Andrew de QuinceySigned-off-by: Saqeb Akhter
Signed-off-by: Michael Krufky
Signed-off-by: Mauro Carvalho Chehab -
Two typos in Documentation/IPMI.
Acked-by: Alan Cox
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The zone_reclaim_interval was necessary because we were not able to determine
how many unmapped pages exist in a zone. Therefore we had to scan in
intervals to figure out if any pages were unmapped.With the zoned counters and NR_ANON_PAGES we now know the number of pagecache
pages and the number of mapped pages in a zone. So we can simply skip the
reclaim if there is an insufficient number of unmapped pages. We use
SWAP_CLUSTER_MAX as the boundary.Drop all support for /proc/sys/vm/zone_reclaim_interval.
Signed-off-by: Christoph Lameter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Acked-by: Alan Cox
Signed-off-by: Adrian Bunk -
Signed-off-by: Adrian Bunk
-
Three typos in only one line...
Signed-off-by: Adrian Bunk
-
Signed-off-by: Adrian Bunk
-
Signed-off-by: Adrian Bunk
-
Signed-off-by: Adrian Bunk
Acked-by: Mauro Carvalho Chehab
30 Jun, 2006
11 commits
-
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2:
ocfs2: remove redundant NULL checks in ocfs2_direct_IO_get_blocks()
ocfs2: clean up some osb fields
ocfs2: fix init of uuid_net_key
ocfs2: silence a debug print
ocfs2: silence ENOENT during lookup of broken links
ocfs2: Cleanup message prints
ocfs2: silence -EEXIST from ocfs2_extent_map_insert/lookup
[PATCH] fs/ocfs2/dlm/dlmrecovery.c: make dlm_lockres_master_requery() static
ocfs2: warn the user on a dead timeout mismatch
ocfs2: OCFS2_FS must depend on SYSFS
ocfs2: Compile-time disabling of ocfs2 debugging output.
configfs: Clear up a few extra spaces where there should be TABs.
configfs: Release memory in configfs_example. -
The configfs_example module was missing a ->release().
Signed-off-by: Joel Becker
Signed-off-by: Mark Fasheh -
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/devfs-2.6: (22 commits)
[PATCH] devfs: Remove it from the feature_removal.txt file
[PATCH] devfs: Last little devfs cleanups throughout the kernel tree.
[PATCH] devfs: Rename TTY_DRIVER_NO_DEVFS to TTY_DRIVER_DYNAMIC_DEV
[PATCH] devfs: Remove the tty_driver devfs_name field as it's no longer needed
[PATCH] devfs: Remove the line_driver devfs_name field as it's no longer needed
[PATCH] devfs: Remove the videodevice devfs_name field as it's no longer needed
[PATCH] devfs: Remove the gendisk devfs_name field as it's no longer needed
[PATCH] devfs: Remove the miscdevice devfs_name field as it's no longer needed
[PATCH] devfs: Remove the devfs_fs_kernel.h file from the tree
[PATCH] devfs: Remove devfs_remove() function from the kernel tree
[PATCH] devfs: Remove devfs_mk_cdev() function from the kernel tree
[PATCH] devfs: Remove devfs_mk_bdev() function from the kernel tree
[PATCH] devfs: Remove devfs_mk_symlink() function from the kernel tree
[PATCH] devfs: Remove devfs_mk_dir() function from the kernel tree
[PATCH] devfs: Remove devfs_*_tape() functions from the kernel tree
[PATCH] devfs: Remove devfs support from the sound subsystem
[PATCH] devfs: Remove devfs support from the ide subsystem.
[PATCH] devfs: Remove devfs support from the serial subsystem
[PATCH] devfs: Remove devfs from the init code
[PATCH] devfs: Remove devfs from the partition code
... -
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (33 commits)
[MIPS] Add missing backslashes to macro definitions.
[MIPS] Death list of board support to be removed after 2.6.18.
[MIPS] Remove BSD and Sys V compat data types.
[MIPS] ioc3.h: Uses u8, so include .
[MIPS] 74K: Assume it will also have an AR bit in config7
[MIPS] Treat CPUs with AR bit as physically indexed.
[MIPS] Oprofile: Support VSMP on 34K.
[MIPS] MIPS32/MIPS64 S-cache fix and cleanup
[MIPS] excite: PCI makefile needs to use += if it wants a chance to work.
[MIPS] excite: plat_setup -> plat_mem_setup.
[MIPS] au1xxx: export dbdma functions
[MIPS] au1xxx: dbdma, no sleeping under spin_lock
[MIPS] au1xxx: fix PSC_SMBTXRX_RSR.
[MIPS] Early printk for IP27.
[MIPS] Fix handling of 0 length I & D caches.
[MIPS] Typo fixes.
[MIPS] MIPS32/MIPS64 secondary cache management
[MIPS] Fix FIXADDR_TOP for TX39/TX49.
[MIPS] Remove first timer interrupt setup in wrppmc_timer_setup()
[MIPS] Fix configuration of R2 CPU features and multithreading.
... -
As usual fixes would be prefered.
Signed-off-by: Ralf Baechle
-
The driver has been removed a while ago already.
Signed-off-by: Ralf Baechle
-
* master.kernel.org:/pub/scm/linux/kernel/git/perex/alsa:
[ALSA] echoaudio - Remove kfree_nocheck()
[ALSA] echoaudio - Fix Makefile
[ALSA] Add Intel D965 board support
[ALSA] Fix/add support of Realtek ALC883 / ALC888 and ALC861 codecs
[ALSA] Fix a typo in echoaudio/midi.c
[ALSA] snd-aoa: enable dual-edge in GPIOs
[ALSA] snd-aoa: support iMac G5 iSight
[ALSA] snd-aoa: not experimental
[ALSA] Add echoaudio sound drivers
[ALSA] ak4xxx-adda - Code clean-up
[ALSA] Remove CONFIG_EXPERIMENTAL from intel8x0m driver
[ALSA] Stereo controls for M-Audio Revolution cards
[ALSA] Fix misuse of __list_add() in seq_ports.c
[ALSA] hda-codec - Add model entry for Samsung X60 Chane
[ALSA] make CONFIG_SND_DYNAMIC_MINORS non-experimental
[ALSA] Fix wrong dependencies of snd-aoa driver
[ALSA] fix build failure due to snd-aoa
[ALSA] AD1888 mixer controls for DC mode
[ALSA] Suppress irq handler mismatch messages in ALSA ISA drivers
[ALSA] usb-audio support for Turtle Beach Roadie -
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: (28 commits)
[S390] rework of channel measurement facility.
[S390] appldata enhancements.
[S390] Add vmpanic parameter.
[S390] add PAV support to the dasd driver.
[S390] remove export of sys_call_table
[S390] remove unused macros from binfmt_elf32.c
[S390] fix duplicate export of overflow{ug}id
[S390] cio chpid offline.
[S390] avenrun export in appdata_base.c
Convert s390_collect_crw_info() in s390mach.c from being started
[S390] dasd eer data format.
[S390] preempt_count initialization.
[S390] head.S code moving.
[S390] dasd whitespace and other cosmetics.
[S390] virtual cpu accounting vs. machine checks.
[S390] add __cpuinit to appldata cpu hotplug notifier.
[S390] dasd_eckd_dump_sense bug.
[S390] missing check in dasd_eer_open.
[S390] modular 3270 driver.
[S390] console_unblank woes.
... -
Signed-off-by: Eric W. Biederman
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: Benjamin Herrenschmidt
Cc: Rajesh Shah
Cc: Andi Kleen
Cc: "Protasevich, Natalie"
Cc: "Luck, Tony"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add docbook file - includes API documentation.
Signed-off-by: Thomas Gleixner
Signed-off-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The proposed NFS key type uses its own method of passing key requests to
userspace (upcalling) rather than invoking /sbin/request-key. This is
because the responsible userspace daemon should already be running and will
be contacted through rpc_pipefs.This patch permits the NFS filesystem to pass auxiliary data to the upcall
operation (struct key_type::request_key) so that the upcaller can use a
pre-existing communications channel more easily.Signed-off-by: David Howells
Acked-By: Kevin Coffman
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
29 Jun, 2006
6 commits
-
Implementation of new kernel parameter vmpanic that provides a means to
perform a z/VM CP command after a kernel panic occurred.Signed-off-by: Peter Oberparleiter
Signed-off-by: Martin Schwidefsky -
* master.kernel.org:/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
[WATCHDOG] Documentation/watchdog update
[WATCHDOG] convert AT91RM9200 watchdog to platform driver
[WATCHDOG] add WDIOC_GETTIMELEFT ioctl
[WATCHDOG] Pre-Timeout flags -
Temporarily add EXPORT_UNUSED_SYMBOL and EXPORT_UNUSED_SYMBOL_GPL. These
will be used as a transition measure for symbols that aren't used in the
kernel and are on the way out. When a module uses such a symbol, a warning
is printk'd at modprobe time.The main reason for removing unused exports is size: eacho export takes
roughly between 100 and 150 bytes of kernel space in the binary. This
patch gives users the option to immediately get this size gain via a config
option.Signed-off-by: Arjan van de Ven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Documentation/watchdog/:
Expose example and tool source files in the Documentation/ directory in
their own files instead of being buried (almost hidden) in readme/txt files.This will make them more visible/usable to users who may need
to use them, to developers who may need to test with them, and
to janitors who would update them if they were more visible.Also, if any of these possibly should not be in the kernel tree at
all, it will be clearer that they are here and we can discuss if
they should be removed.Signed-off-by: Randy Dunlap
Signed-off-by: Wim Van Sebroeck
Signed-off-by: Andrew Morton -
Patch from Realtek:
- Fix ALC883 support code
- Add support of ALC888 codec
- Add ALC660 support (ALC861-compatible)
- Add HP xw4400/6400/8400/9400 support (model=hp-bpc)
- Code clean-up: fix spaces and indentationSigned-off-by: Takashi Iwai
Signed-off-by: Jaroslav Kysela -
From: Giuliano Pochini Add echoaudio sound drivers (darla20, darla24, echo3g, gina20, gina24,
indigo, indigodj, indigoio, layla20, lala24, mia, mona)Signed-off-by: Takashi Iwai
Signed-off-by: Jaroslav Kysela
28 Jun, 2006
6 commits
-
* master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (26 commits)
V4L/DVB (4263): Fix warning when compiling on 64 bit machines
V4L/DVB (4261): Included required header for in-kernel compilation
V4L/DVB (4260): Stradis.c: make 2 functions static
V4L/DVB (4259): Pass an explicit log prefix to cx2341x_log_status
V4L/DVB (4257): Fix 64-bit compile warnings.
V4L/DVB (4255): Tda9887 default TOP value is 0x10
V4L/DVB (4254): Remove obsoleted tuner_debug option.
V4L/DVB (4253): IVTV VBI format description too long.
V4L/DVB (4252): Remove duplicate 'tda9887' in info messages.
V4L/DVB (4245): Reduce the amount of pvrusb2-sourced noise going into the system log
V4L/DVB (4244): Implement use of cx2341x module in pvrusb2 driver
V4L/DVB (4243): Exploit new V4L control features in pvrusb2
V4L/DVB (4242): Don't suspend encoder when changing its attributes (in pvrusb2)
V4L/DVB (4241): Fix faulty encoder error recovery in pvrusb2
V4L/DVB (4240): Various V4L control enhancements in pvrusb2
V4L/DVB (4239): Handle boolean controls in pvrusb2
V4L/DVB (4238): Make sure flags field is initialized when quering a control in pvrusb2
V4L/DVB (4237): Move LOG_STATUS bracketing to a different part of the pvrusb2 driver
V4L/DVB (4236): Rearrange things in pvrusb2 driver in preparation for using cx2341x module
V4L/DVB (4235): Increase the maximum number of controls that pvrusb2-sysfs.c can handle.
... -
Add rt-mutex documentation.
[rostedt@goodmis.org: Update rt-mutex-design.txt as per Randy Dunlap suggestions]
Signed-off-by: Ingo Molnar
Signed-off-by: Thomas Gleixner
Signed-off-by: Arjan van de Ven
Signed-off-by: Steven Rostedt
Signed-off-by: Steven Rostedt
Cc: "Randy.Dunlap"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix typo in Documentation/robust-futexes.txt.
Signed-off-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add an ops vector to rcutorture, and add the ops for Classic RCU. Update
the rcutorture documentation to reflect slight change to the dmesg formats.Signed-off-by: Paul E. McKenney
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This just catches the RCU torture documentation up with the recent fixes
that test RCU for architectures that turn of the scheduling-clock interrupt
for idle CPUs and the addition of a SUCCESS/FAILURE indication, fixing up
an obsolete comment as well.Signed-off-by: Paul E. McKenney
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Move the i386 VDSO down into a vma and thus randomize it.
Besides the security implications, this feature also helps debuggers, which
can COW a vma-backed VDSO just like a normal DSO and can thus do
single-stepping and other debugging features.It's good for hypervisors (Xen, VMWare) too, which typically live in the same
high-mapped address space as the VDSO, hence whenever the VDSO is used, they
get lots of guest pagefaults and have to fix such guest accesses up - which
slows things down instead of speeding things up (the primary purpose of the
VDSO).There's a new CONFIG_COMPAT_VDSO (default=y) option, which provides support
for older glibcs that still rely on a prelinked high-mapped VDSO. Newer
distributions (using glibc 2.3.3 or later) can turn this option off. Turning
it off is also recommended for security reasons: attackers cannot use the
predictable high-mapped VDSO page as syscall trampoline anymore.There is a new vdso=[0|1] boot option as well, and a runtime
/proc/sys/vm/vdso_enabled sysctl switch, that allows the VDSO to be turned
on/off.(This version of the VDSO-randomization patch also has working ELF
coredumping, the previous patch crashed in the coredumping code.)This code is a combined work of the exec-shield VDSO randomization
code and Gerd Hoffmann's hypervisor-centric VDSO patch. Rusty Russell
started this patch and i completed it.[akpm@osdl.org: cleanups]
[akpm@osdl.org: compile fix]
[akpm@osdl.org: compile fix 2]
[akpm@osdl.org: compile fix 3]
[akpm@osdl.org: revernt MAXMEM change]
Signed-off-by: Ingo Molnar
Signed-off-by: Arjan van de Ven
Cc: Gerd Hoffmann
Cc: Rusty Russell
Cc: Zachary Amsden
Cc: Andi Kleen
Cc: Jan Beulich
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
