29 Jul, 2008
1 commit
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Conflicts:
arch/x86/Kconfig
Signed-off-by: Ingo Molnar
26 Jul, 2008
2 commits
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Signed-off-by: Heikki Orsila
Signed-off-by: Sam Ravnborg -
Following patch corrects URL of "The GNU Accounting Utilities" in init/Kconfig.
Noticed by: Bart Van Assche"
Signed-off-by: S.Çağlar Onur
Signed-off-by: Sam Ravnborg
22 Jul, 2008
2 commits
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... as preparation for removing it completely, make it an
invisible bool defaulting to yes.Signed-off-by: Johannes Berg
Signed-off-by: Rusty Russell -
module.c and module.h conatains code for finding
exported symbols which are declared with EXPORT_UNUSED_SYMBOL,
and this code is compiled in even if CONFIG_UNUSED_SYMBOLS is not set
and thus there can be no EXPORT_UNUSED_SYMBOLs in modules anyway
(because EXPORT_UNUSED_SYMBOL(x) are compiled out to nothing then).This patch adds required #ifdefs.
Signed-off-by: Denys Vlasenko
Signed-off-by: Rusty Russell
30 Jun, 2008
1 commit
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Currently x86_32, sh and cris-v32 provide per-device coherent dma
memory allocator.However their implementation is nearly identical. Refactor out
common code to be reused by them.Signed-off-by: Dmitry Baryshkov
Signed-off-by: Ingo Molnar
26 May, 2008
1 commit
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init/Kconfig contains a list of configs that are searched
for if 'make *config' are used with no .config present.
Extend this list to look at the config identified by
ARCH_DEFCONFIG.With this change we now try the defconfig targets last.
This fixes a regression reported
by: Linus TorvaldsSigned-off-by: Sam Ravnborg
Cc: Linus Torvalds
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: "H. Peter Anvin"
09 May, 2008
1 commit
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Linus found a logic bug: we ignore the version number in a module's
vermagic string if we have CONFIG_MODVERSIONS set, but modversions
also lets through a module with no __versions section for modprobe
--force (with tainting, but still).We should only ignore the start of the vermagic string if the module
actually *has* crcs to check. Rather than (say) having an
entertaining hissy fit and creating a config option to work around the
buggy code.Signed-off-by: Rusty Russell
Signed-off-by: Linus Torvalds
07 May, 2008
1 commit
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fix pcspkr dependancies: make the pcspkr platform
drivers to depend on a platform device, and
not the other way around.Signed-off-by: Stas Sergeev
Acked-by: Thomas Gleixner
Acked-by: Dmitry Torokhov
CC: Vojtech Pavlik
CC: Michael Opdenacker
[fixed for 2.6.26-rc1 by tiwai]
Signed-off-by: Takashi Iwai
06 May, 2008
2 commits
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GROUP_SCHED is confirmed to cause unacceptable latencies, see:
http://lkml.org/lkml/2008/5/2/370.
Mark it EXPERIMENTAL and default to no for now.
Signed-off-by: Parag Warudkar
Signed-off-by: Ingo Molnar -
add the HAVE_UNSTABLE_SCHED_CLOCK, for architectures to select.
the next change utilizes it.
Signed-off-by: Ingo Molnar
05 May, 2008
1 commit
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The kernel module loader used to be much too happy to allow loading of
modules for the wrong kernel version by default. For example, if you
had MODVERSIONS enabled, but tried to load a module with no version
info, it would happily load it and taint the kernel - whether it was
likely to actually work or not!Generally, such forced module loading should be considered a really
really bad idea, so make it conditional on a new config option
(MODULE_FORCE_LOAD), and make it default to off.If somebody really wants to force module loads, that's their problem,
but we should not encourage it. Especially as it happened to me by
mistake (ie regular unversioned Fedora modules getting loaded) causing
lots of strange behavior.Signed-off-by: Linus Torvalds
02 May, 2008
1 commit
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If we make SLUB_DEBUG depend on SYSFS then we can simplify some
#ifdefs and avoid others.Signed-off-by: Christoph Lameter
Signed-off-by: Pekka Enberg
29 Apr, 2008
7 commits
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Disable sysctl_check.c for embedded targets. This saves about about 11 kB
in .text and another 11 kB in .data on a PXA255 embedded platform.Signed-off-by: Holger Schurig
Cc: "Eric W. Biederman"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove the mem_cgroup member from mm_struct and instead adds an owner.
This approach was suggested by Paul Menage. The advantage of this approach
is that, once the mm->owner is known, using the subsystem id, the cgroup
can be determined. It also allows several control groups that are
virtually grouped by mm_struct, to exist independent of the memory
controller i.e., without adding mem_cgroup's for each controller, to
mm_struct.A new config option CONFIG_MM_OWNER is added and the memory resource
controller selects this config option.This patch also adds cgroup callbacks to notify subsystems when mm->owner
changes. The mm_cgroup_changed callback is called with the task_lock() of
the new task held and is called just prior to changing the mm->owner.I am indebted to Paul Menage for the several reviews of this patchset and
helping me make it lighter and simpler.This patch was tested on a powerpc box, it was compiled with both the
MM_OWNER config turned on and off.After the thread group leader exits, it's moved to init_css_state by
cgroup_exit(), thus all future charges from runnings threads would be
redirected to the init_css_set's subsystem.Signed-off-by: Balbir Singh
Cc: Pavel Emelianov
Cc: Hugh Dickins
Cc: Sudhir Kumar
Cc: YAMAMOTO Takashi
Cc: Hirokazu Takahashi
Cc: David Rientjes ,
Cc: Balbir Singh
Acked-by: KAMEZAWA Hiroyuki
Acked-by: Pekka Enberg
Reviewed-by: Paul Menage
Cc: Oleg Nesterov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Implement a cgroup to track and enforce open and mknod restrictions on device
files. A device cgroup associates a device access whitelist with each cgroup.
A whitelist entry has 4 fields. 'type' is a (all), c (char), or b (block).
'all' means it applies to all types and all major and minor numbers. Major
and minor are either an integer or * for all. Access is a composition of r
(read), w (write), and m (mknod).The root device cgroup starts with rwm to 'all'. A child devcg gets a copy of
the parent. Admins can then remove devices from the whitelist or add new
entries. A child cgroup can never receive a device access which is denied its
parent. However when a device access is removed from a parent it will not
also be removed from the child(ren).An entry is added using devices.allow, and removed using
devices.deny. For instanceecho 'c 1:3 mr' > /cgroups/1/devices.allow
allows cgroup 1 to read and mknod the device usually known as
/dev/null. Doingecho a > /cgroups/1/devices.deny
will remove the default 'a *:* mrw' entry.
CAP_SYS_ADMIN is needed to change permissions or move another task to a new
cgroup. A cgroup may not be granted more permissions than the cgroup's parent
has. Any task can move itself between cgroups. This won't be sufficient, but
we can decide the best way to adequately restrict movement later.[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: fix may-be-used-uninitialized warning]
Signed-off-by: Serge E. Hallyn
Acked-by: James Morris
Looks-good-to: Pavel Emelyanov
Cc: Daniel Hokka Zakrisson
Cc: Li Zefan
Cc: Paul Menage
Cc: Balbir Singh
Cc: KAMEZAWA Hiroyuki
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The cgroup debug subsystem isn't generally useful for users. It should
default to "n".Signed-off-by: Paul Menage
Cc: "Li Zefan"
Cc: Balbir Singh
Cc: Paul Jackson
Cc: Pavel Emelyanov
Cc: KAMEZAWA Hiroyuki
Cc: "YAMAMOTO Takashi"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
16 kB is often no longer enough for a normal boot of an UP system.
And even less when people e.g. use suspend.
17 seems to be a more reasonable default for current kernels on current
hardware (it's just the default, anyone who is memory limited can still lower
it).Signed-off-by: Adrian Bunk
Acked-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc: video drivers: add facility level
sparc: tcx.c make tcx_init and tcx_exit static
sparc: ffb.c make ffb_init and ffb_exit static
sparc: cg14.c make cg14_init and cg15_exit static
sparc: bw2.c fix bw2_exit
sparc64: Fix accidental syscall restart on child return from clone/fork/vfork.
sparc64: Clean up handling of pt_regs trap type encoding.
sparc: Remove old style signal frame support.
sparc64: Kill bogus RT_ALIGNEDSZ macro from signal.c
sparc: sunzilog.c remove unused argument
sparc: fix drivers/video/tcx.c warning
sparc64: Kill unused local ISA bus layer.
input: Rewrite sparcspkr device probing.
sparc64: Do not ignore 'pmu' device ranges.
sparc64: Kill ISA_FLOPPY_WORKS code.
sparc64: Kill CONFIG_SPARC32_COMPAT
sparc64: Cleanups and corrections for arch/sparc64/Kconfig
sparc64: Fix wedged irq regression. -
this option has been the default on a wide range of distributions
for a long time - time to make it non-experimental.Signed-off-by: Ingo Molnar
Signed-off-by: Linus Torvalds
27 Apr, 2008
1 commit
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It's completely superfluous, CONFIG_COMPAT is sufficient.
What this used to be is an umbrella for enabling code shared
by all 32-bit compat binary support types. But with the
removal of SunOS and Solaris support, the only one left is
Linux 32-bit ELF.Update defconfig.
Signed-off-by: David S. Miller
20 Apr, 2008
1 commit
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Viktor was nice enough to enhance the document based on my replies to
his questions on the subject.Signed-off-by: Peter Zijlstra
Signed-off-by: Ingo Molnar
14 Apr, 2008
1 commit
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The per node counters are used mainly for showing data through the sysfs API.
If that API is not compiled in then there is no point in keeping track of this
data. Disable counters for the number of slabs and the number of total slabs
if !SLUB_DEBUG. Incrementing the per node counters is also accessing a
potentially contended cacheline so this could actually be a performance
benefit to embedded systems.SLABINFO support is also affected. It now must depends on SLUB_DEBUG (which
is on by default).Patch also avoids a check for a NULL kmem_cache_node pointer in new_slab()
if the system is not compiled with NUMA support.[penberg@cs.helsinki.fi: fix oops and move ->nr_slabs into CONFIG_SLUB_DEBUG]
Signed-off-by: Christoph Lameter
Signed-off-by: Pekka Enberg
11 Mar, 2008
1 commit
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The original preemptible-RCU patch put the choice between classic and
preemptible RCU into kernel/Kconfig.preempt, which resulted in build failures
on machines not supporting CONFIG_PREEMPT. This choice was therefore moved to
init/Kconfig, which worked, but placed the choice between classic and
preemptible RCU at the top level, a very obtuse choice indeed.This patch changes from the Kconfig "choice" mechanism to a pair of booleans,
only one of which (CONFIG_PREEMPT_RCU) is user-visible, and is located in
kernel/Kconfig.preempt, where one would expect it to be. The other
(CONFIG_CLASSIC_RCU) is in init/Kconfig so that it is available to all
architectures, hopefully avoiding build breakage. Thanks to Roman Zippel for
suggesting this approach.Signed-off-by: Paul E. McKenney
Cc: Ingo Molnar
Acked-by: Steven Rostedt
Cc: Dipankar Sarma
Cc: Josh Triplett
Cc: Thomas Gleixner
Cc: Peter Zijlstra
Cc: Roman Zippel
Cc: Sam Ravnborg
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
05 Mar, 2008
4 commits
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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6:
debugfs: fix sparse warnings
Driver core: Fix cleanup when failing device_add().
driver core: Remove dpm_sysfs_remove() from error path of device_add()
PM: fix new mutex-locking bug in the PM core
PM: Do not acquire device semaphores upfront during suspend
kobject: properly initialize ksets
sysfs: CONFIG_SYSFS_DEPRECATED fix
driver core: fix up Kconfig text for CONFIG_SYSFS_DEPRECATED -
Rename Memory Controller to Memory Resource Controller. Reflect the same
changes in the CONFIG definition for the Memory Resource Controller. Group
together the config options for Resource Counters and Memory Resource
Controller.Signed-off-by: Balbir Singh
Cc: Paul Menage
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
CONFIG_SYSFS_DEPRECATED=y changed its meaning recently and causes
regressions in working setups that had SYSFS_DEPRECATED disabled.so rename it to SYSFS_DEPRECATED_V2 so that testers pick up the new
default via 'make oldconfig', even if their old .config's disabled
CONFIG_SYSFS_DEPRECATED ...Signed-off-by: Ingo Molnar
Cc: Kay Sievers
Cc: Linus Torvalds
Cc: Andrew Morton
Signed-off-by: Greg Kroah-Hartman -
As things get moved into this config option, the hard date of 2006 does
not work anymore, so update the text to be more descriptive.Cc: Kay Sievers
Cc: Jiri Slaby
Signed-off-by: Greg Kroah-Hartman
24 Feb, 2008
1 commit
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Document huge memory/cache overhead of memory controller in Kconfig
I was a little surprised that 2.6.25-rc* increased struct page for the
memory controller. At least on many x86-64 machines it will not fit into a
single cache line now anymore and also costs considerable amounts of RAM.
At earlier review I remembered asking for a external data structure for
this.It's also quite unobvious that a innocent looking Kconfig option with a
single line Kconfig description has such a negative effect.This patch attempts to document these disadvantages at least so that users
configuring their kernel can make a informed decision.Signed-off-by: Andi Kleen
Cc: Balbir Singh
Acked-by: Paul Menage
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
13 Feb, 2008
1 commit
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Make the rt group scheduler compile time configurable.
Keep it experimental for now.Signed-off-by: Peter Zijlstra
Signed-off-by: Ingo Molnar
10 Feb, 2008
1 commit
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Signed-off-by: Ingo Molnar
Signed-off-by: Thomas Gleixner
09 Feb, 2008
5 commits
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Just like with the user namespaces, move the namespace management code into
the separate .c file and mark the (already existing) PID_NS option as "depend
on NAMESPACES"[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Pavel Emelyanov
Acked-by: Serge Hallyn
Cc: Cedric Le Goater
Cc: "Eric W. Biederman"
Cc: Herbert Poetzl
Cc: Kirill Korotaev
Cc: Sukadev Bhattiprolu
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Make the user_namespace.o compilation depend on this option and move the
init_user_ns into user.c file to make the kernel compile and work without the
namespaces support. This make the user namespace code be organized similar to
other namespaces'.Also mask the USER_NS option as "depend on NAMESPACES".
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Pavel Emelyanov
Acked-by: Serge Hallyn
Cc: Cedric Le Goater
Cc: "Eric W. Biederman"
Cc: Herbert Poetzl
Cc: Kirill Korotaev
Cc: Sukadev Bhattiprolu
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Currently the IPC namespace management code is spread over the ipc/*.c files.
I moved this code into ipc/namespace.c file which is compiled out when needed.The linux/ipc_namespace.h file is used to store the prototypes of the
functions in namespace.c and the stubs for NAMESPACES=n case. This is done
so, because the stub for copy_ipc_namespace requires the knowledge of the
CLONE_NEWIPC flag, which is in sched.h. But the linux/ipc.h file itself in
included into many many .c files via the sys.h->sem.h sequence so adding the
sched.h into it will make all these .c depend on sched.h which is not that
good. On the other hand the knowledge about the namespaces stuff is required
in 4 .c files only.Besides, this patch compiles out some auxiliary functions from ipc/sem.c,
msg.c and shm.c files. It turned out that moving these functions into
namespaces.c is not that easy because they use many other calls and macros
from the original file. Moving them would make this patch complicated. On
the other hand all these functions can be consolidated, so I will send a
separate patch doing this a bit later.Signed-off-by: Pavel Emelyanov
Acked-by: Serge Hallyn
Cc: Cedric Le Goater
Cc: "Eric W. Biederman"
Cc: Herbert Poetzl
Cc: Kirill Korotaev
Cc: Sukadev Bhattiprolu
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Currently all the namespace management code is in the kernel/utsname.c file,
so just compile it out and make stubs in the appropriate header.The init namespace itself is in init/version.c and is in the kernel all the
time.Signed-off-by: Pavel Emelyanov
Acked-by: Serge Hallyn
Cc: Cedric Le Goater
Cc: "Eric W. Biederman"
Cc: Herbert Poetzl
Cc: Kirill Korotaev
Cc: Sukadev Bhattiprolu
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The option is selectable if EMBEDDED is chosen only. When the EMBEDDED is off
namespaces will be on.Signed-off-by: Pavel Emelyanov
Acked-by: Serge Hallyn
Cc: Cedric Le Goater
Cc: "Eric W. Biederman"
Cc: Herbert Poetzl
Cc: Kirill Korotaev
Cc: Sukadev Bhattiprolu
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
08 Feb, 2008
2 commits
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Setup the memory cgroup and add basic hooks and controls to integrate
and work with the cgroup.Signed-off-by: Balbir Singh
Cc: Pavel Emelianov
Cc: Paul Menage
Cc: Peter Zijlstra
Cc: "Eric W. Biederman"
Cc: Nick Piggin
Cc: Kirill Korotaev
Cc: Herbert Poetzl
Cc: David Rientjes
Cc: Vaidyanathan Srinivasan
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
With fixes from David Rientjes
Introduce generic structures and routines for resource accounting.
Each resource accounting cgroup is supposed to aggregate it,
cgroup_subsystem_state and its resource-specific members within.Signed-off-by: Pavel Emelianov
Signed-off-by: Balbir Singh
Cc: Paul Menage
Cc: Peter Zijlstra
Cc: "Eric W. Biederman"
Cc: Nick Piggin
Cc: Kirill Korotaev
Cc: Herbert Poetzl
Cc: Vaidyanathan Srinivasan
Signed-off-by: David Rientjes
Cc: Pavel Emelianov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
07 Feb, 2008
1 commit
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based on similar patch from: Pavel Machek
Introduce CONFIG_COMPAT_BRK. If disabled then the kernel is free
(but not obliged to) randomize the brk area.Heap randomization breaks ancient binaries, so we keep COMPAT_BRK
enabled by default.Signed-off-by: Ingo Molnar
06 Feb, 2008
1 commit
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Signed-off-by: Matt Mackall
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
