24 May, 2007
6 commits
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Allow user space to determine if a disk supports Asynchronous Notification of
media changes. This is done by adding a new sysfs file "capability_flags",
which is documented in (insert file name). This sysfs file will export all
disk capabilities flags to user space. We also define a new flag to define
the media change notification capability.Signed-off-by: Kristen Carlson Accardi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Other than refrigerator, no one else calls frozen_process(). So move it from
include/linux/freezer.h to kernel/power/process.c.Also, since a task can be marked as frozen by itself, we don't need to pass
the (struct task_struct *p) parameter to frozen_process().Signed-off-by: Gautham R Shenoy
Signed-off-by: Rafael J. Wysocki
Cc: Oleg Nesterov
Cc: Pavel Machek
Cc: "Eric W. Biederman"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch fixes the race pointed out by Oleg Nesterov.
* Freezer marks a thread as freezeable.
* The thread now marks itself PF_NOFREEZE, but it will be frozen on
on calling try_to_freeze(). Thus the task is frozen, even though it doesn't
want to.
* Subsequent thaw_processes() will also fail to thaw the task since it is
marked PF_NOFREEZE.Avoid this problem by checking the task's PF_NOFREEZE status in
frozen_processes() before marking the task as frozen.Signed-off-by: Gautham R Shenoy
Signed-off-by: Rafael J. Wysocki
Cc: Oleg Nesterov
Cc: Pavel Machek
Cc: "Eric W. Biederman"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Currently try_to_freeze_tasks() has to wait until all of the vforked processes
exit and for this reason every user can make it fail. To fix this problem we
can introduce the additional process flag PF_FREEZER_SKIP to be used by tasks
that do not want to be counted as freezable by the freezer and want to have
TIF_FREEZE set nevertheless. Then, this flag can be set by tasks using
sys_vfork() before they call wait_for_completion(&vfork) and cleared after
they have woken up. After clearing it, the tasks should call try_to_freeze()
as soon as possible.Signed-off-by: Rafael J. Wysocki
Cc: Gautham R Shenoy
Cc: Oleg Nesterov
Cc: Pavel Machek
Cc: "Eric W. Biederman"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
If the freezing of tasks fails and a task is preempted in refrigerator()
before calling frozen_process(), then thaw_tasks() may run before this task is
frozen. In that case the task will freeze and no one will thaw it.To fix this race we can call freezing(current) in refrigerator() along with
frozen_process(current) under the task_lock() which also should be taken in
the error path of try_to_freeze_tasks() as well as in thaw_process().
Moreover, if thaw_process() additionally clears TIF_FREEZE for tasks that are
not frozen, we can be sure that all tasks are thawed and there are no pending
"freeze" requests after thaw_tasks() has run.Signed-off-by: Rafael J. Wysocki
Acked-by: Pavel Machek
Cc: Gautham R Shenoy
Cc: Oleg Nesterov
Cc: "Eric W. Biederman"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add the IDE device ID to atiixp_pci_tbl struct in atiixp.c for ATI SB700.
From: Henry Su
Signed-off-by: Luugi Marsan
Signed-off-by: Bartlomiej Zolnierkiewicz
23 May, 2007
1 commit
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Reverted the change to struct v4l2_pix_format. I completely missed that
this struct was used by existing ioctls so that changing it broke the ABI.
I will have to think of another way of setting the top/left coordinates
but for now this change is reverted to preserve compatibility.Signed-off-by: Hans Verkuil
Signed-off-by: Mauro Carvalho Chehab
22 May, 2007
9 commits
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commit e8edc6e03a5c8562dc70a6d969f732bdb355a7e7 added an include of
linux/jiffies.h in linux/smb_fs.h outside the ifdef __KERNEL__.Signed-off-by: Stephen Rothwell
Signed-off-by: Linus Torvalds -
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6:
Add constant for FCS/CRC length (frame check sequence)
declance: Remove a dangling spin_unlock_irq() thingy
e1000: Don't enable polling in open() (was: e1000: assertion hit in e1000_clean(), kernel 2.6.21.1) -
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev:
libata: bump versions
libata: Trim trailing whitespace
libata: Kiss post_set_mode goodbye
ata_piix: clean up
pata_hpt366: Enable bits are unreliable so don't use them
libata: Add Seagate STT20000A to DMA blacklist.
ahci: disable 64bit dma on sb600 -
As of the -mm tree we don't have post_set_mode users any more.
Signed-off-by: Alan Cox
Signed-off-by: Jeff Garzik -
About a dozen drivers that have some form of crc checksumming or offloading
use this constant, warranting a global define for it.Signed-off-by: Auke Kok
Signed-off-by: Jeff Garzik -
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fix:
mm/slab: fix section mismatch warning
mm: fix section mismatch warnings
init/main: use __init_refok to fix section mismatch
kbuild: introduce __init_refok/__initdata_refok to supress section mismatch warnings
all-archs: consolidate .data section definition in asm-generic
all-archs: consolidate .text section definition in asm-generic
kbuild: add "Section mismatch" warning whitelist for powerpc
kbuild: make better section mismatch reports on i386, arm and mips
kbuild: make modpost section warnings clearer
kconfig: search harder for curses library in check-lxdialog.sh
kbuild: include limits.h in sumversion.c for PATH_MAX
powerpc: Fix the MODALIAS generation in modpost for of devices -
* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
[NET]: Fix race condition about network device name allocation.
[IPV4]: icmp: fix crash with sysctl_icmp_errors_use_inbound_ifaddr
[NETFILTER]: nf_conntrack_ipv4: fix incorrect #ifdef config name
[NETFILTER]: nf_conntrack: fix use-after-free in helper destroy callback invocation
[IPSEC] pfkey: Load specific algorithm in pfkey_add rather than all
[TCP] FRTO: Prevent state inconsistency in corner cases
[TCP] FRTO: Add missing ECN CWR sending to one of the responses
[NET]: Fix net/core/skbuff.c gcc-3.2.3 compilation error
[RFKILL]: Fix check for correct rfkill allocation
[IPV6]: Add ip6_tunnel.h to headers_install -
The ifdef tests were broken. Assume it acts like gcc 4
Signed-off-by: Andi Kleen
Signed-off-by: Linus Torvalds -
First thing mm.h does is including sched.h solely for can_do_mlock() inline
function which has "current" dereference inside. By dealing with can_do_mlock()
mm.h can be detached from sched.h which is good. See below, why.This patch
a) removes unconditional inclusion of sched.h from mm.h
b) makes can_do_mlock() normal function in mm/mlock.c
c) exports can_do_mlock() to not break compilation
d) adds sched.h inclusions back to files that were getting it indirectly.
e) adds less bloated headers to some files (asm/signal.h, jiffies.h) that were
getting them indirectlyNet result is:
a) mm.h users would get less code to open, read, preprocess, parse, ... if
they don't need sched.h
b) sched.h stops being dependency for significant number of files:
on x86_64 allmodconfig touching sched.h results in recompile of 4083 files,
after patch it's only 3744 (-8.3%).Cross-compile tested on
all arm defconfigs, all mips defconfigs, all powerpc defconfigs,
alpha alpha-up
arm
i386 i386-up i386-defconfig i386-allnoconfig
ia64 ia64-up
m68k
mips
parisc parisc-up
powerpc powerpc-up
s390 s390-up
sparc sparc-up
sparc64 sparc64-up
um-x86_64
x86_64 x86_64-up x86_64-defconfig x86_64-allnoconfigas well as my two usual configs.
Signed-off-by: Alexey Dobriyan
Signed-off-by: Linus Torvalds
20 May, 2007
1 commit
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The Mobile IPv6 package (http://www.mobile-ipv6.org/software/) needs
this header file to build the tunnelctl component. The header
already looks sanitized so is safe to export.Signed-off-by: Deepak Saxena
Signed-off-by: David S. Miller
19 May, 2007
2 commits
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Throughout the kernel there are a few legitimite references
to init or exit sections. Most of these are covered by the
patterns included in modpost but a few nees special attention.
To avoid hardcoding a lot of function names in modpost introduce
a marker so relevant function/data can be marked.
When modpost see a reference to a init/exit function from
a function/data marked no warning will be issued.Idea from: Andrew Morton
Signed-off-by: Sam Ravnborg
Cc: Andrew Morton -
1 is a power of two, therefore roundup_pow_of_two(1) should return 1. It does
in case the argument is a variable but in case it's a constant it behaves
wrong and returns 0. Probably nobody ever did it so this was never noticed.Signed-off-by: Rolf Eike Beer
Signed-off-by: Linus Torvalds
18 May, 2007
3 commits
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* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
[IPV4]: Remove IPVS icmp hack from route.c for now.
[IPV4]: Correct rp_filter help text.
[TCP]: TCP_CONG_YEAH requires TCP_CONG_VEGAS
[TCP] slow start: Make comments and code logic clearer.
[BLUETOOTH]: Fix locking in hci_sock_dev_event().
[NET]: Fix BMSR_100{HALF,FULL}2 defines in linux/mii.h
[NET]: lockdep classes in register_netdevice -
As pointed out by Jarek Poplawski, the patch
[WORKQUEUE]: cancel_delayed_work: use del_timer() instead of del_timer_sync()
commit: 071b638689464c6b39407025eedd810d5b5e6f5dwas wrong, it was merged by mistake after that.
From the changelog:
after this patch:
...
delayed_work_timer_fn->__queue_work() in progress.The latter doesn't differ from the caller's POV,
it does make a difference if the caller calls flush_workqueue() after
cancel_delayed_work(), in that case flush_workqueue() can miss this
work_struct.Signed-off-by: Oleg Nesterov
Cc: Jarek Poplawski
Cc: David Howells
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Noticed by Matvejchikov Ilya.
Signed-off-by: David S. Miller
17 May, 2007
15 commits
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Re-introduce rmap verification patches that Hugh removed when he removed
PG_map_lock. PG_map_lock actually isn't needed to synchronise access to
anonymous pages, because PG_locked and PTL together already do.These checks were important in discovering and fixing a rare rmap corruption
in SLES9.Signed-off-by: Nick Piggin
Cc: Hugh Dickins
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Make sysctl/kernel/core_pattern and fs/exec.c agree on maximum core
filename size and change it to 128, so that extensive patterns such as
'/local/cores/%e-%h-%s-%t-%p.core' won't result in truncated filename
generation.Signed-off-by: Dan Aloni
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch add new sub-device-id to support new adapter and changed the
interrupt irq number for unsigned char to unsigned int.[akpm@osdl.org: fix whitespace in device table]
Signed-off by: Wendy XiongSigned-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
It is a known fact that freezeable multithreaded workqueues doesn't like
CPU_DEAD. We keep them only for the incoming CPU-hotplug rework.Sadly, we can't just kill create_freezeable_workqueue() right now, make
them singlethread.Signed-off-by: Oleg Nesterov
Cc: "Rafael J. Wysocki"
Cc: Gautham R Shenoy
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
All architectures that have an implementation of smp_call_function_single
let it return -EBUSY if it is asked to execute func on the current cpu.
(akpm: except for x86_64). Therefore the UP version must always return
-EBUSY.[akpm@linux-foundation.org: build fix]
Signed-off-by: Heiko Carstens
Cc: Andi Kleen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Currently we have a maze of configuration variables that determine the
maximum slab size. Worst of all it seems to vary between SLAB and SLUB.So define a common maximum size for kmalloc. For conveniences sake we use
the maximum size ever supported which is 32 MB. We limit the maximum size
to a lower limit if MAX_ORDER does not allow such large allocations.For many architectures this patch will have the effect of adding large
kmalloc sizes. x86_64 adds 5 new kmalloc sizes. So a small amount of
memory will be needed for these caches (contemporary SLAB has dynamically
sizeable node and cpu structure so the waste is less than in the past)Most architectures will then be able to allocate object with sizes up to
MAX_ORDER. We have had repeated breakage (in fact whenever we doubled the
number of supported processors) on IA64 because one or the other struct
grew beyond what the slab allocators supported. This will avoid future
issues and f.e. avoid fixes for 2k and 4k cpu support.CONFIG_LARGE_ALLOCS is no longer necessary so drop it.
It fixes sparc64 with SLAB.
Signed-off-by: Christoph Lameter
Signed-off-by: "David S. Miller"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
SLAB_CTOR_CONSTRUCTOR is always specified. No point in checking it.
Signed-off-by: Christoph Lameter
Cc: David Howells
Cc: Jens Axboe
Cc: Steven French
Cc: Michael Halcrow
Cc: OGAWA Hirofumi
Cc: Miklos Szeredi
Cc: Steven Whitehouse
Cc: Roman Zippel
Cc: David Woodhouse
Cc: Dave Kleikamp
Cc: Trond Myklebust
Cc: "J. Bruce Fields"
Cc: Anton Altaparmakov
Cc: Mark Fasheh
Cc: Paul Mackerras
Cc: Christoph Hellwig
Cc: Jan Kara
Cc: David Chinner
Cc: "David S. Miller"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
I'm getting zillions of undefined references to __kmalloc_size_too_large on
alpha. For some reason alpha is building out-of-line copies of kmalloc_slab()
into lots of compilation units.It turns out that gcc just isn't smart enough to work out that
__builtin_contant_p(size)==true implies that __builtin_contant_p(index)==true.So let's give it a bit of help.
Cc: Christoph Lameter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Two definitions remained in slab.h that are particular to the SLAB allocator.
Move to slab_def.hSigned-off-by: Christoph Lameter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
There is no user of destructors left. There is no reason why we should keep
checking for destructors calls in the slab allocators.The RFC for this patch was discussed at
http://marc.info/?l=linux-kernel&m=117882364330705&w=2Destructors were mainly used for list management which required them to take a
spinlock. Taking a spinlock in a destructor is a bit risky since the slab
allocators may run the destructors anytime they decide a slab is no longer
needed.Patch drops destructor support. Any attempt to use a destructor will BUG().
Acked-by: Pekka Enberg
Acked-by: Paul Mundt
Signed-off-by: Christoph Lameter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev:
libata: track spindown status and skip spindown_compat if possible
libata: fix shutdown warning message printing
libata-acpi: add ATA_FLAG_ACPI_SATA port flag
libata: during revalidation, check n_sectors after device is configured
libata: separate out ata_dev_reread_id()
pata_scc had been missed by ata_std_prereset() switch -
Sorry I screwed up the comparison. It is only an error if we attempt
to allocate a slab larger than the maximum allowed size.Signed-off-by: Christoph Lameter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
16 May, 2007
3 commits
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Our assumption that most distros issue STANDBYNOW seems wrong. The
upstream sysvinit and thus many distros including gentoo and opensuse
don't take any action for libata disks on spindown. We can skip
compat handling for these distros so that they don't need to update
anything to take advantage of kernel-side shutdown.Signed-off-by: Tejun Heo
Signed-off-by: Jeff Garzik -
Whether a controller needs IDE or SATA ACPI hierarchy is determined by
the programming interface of the controller not by whether the
controller is SATA or PATA, or it supports slave device or not. This
patch adds ATA_FLAG_ACPI_SATA port flags which tells libata-acpi that
the port needs SATA ACPI nodes, and sets the flag for ahci and
sata_sil24.Signed-off-by: Tejun Heo
Signed-off-by: Jeff Garzik -
Device might be resized during ata_dev_configure() due to HPA or
(later) ACPI _GTF. Currently it's worked around by caching n_sectors
before turning off HPA. The cached original size is overwritten if
the device is reconfigured without being hardreset - which always
happens after configuring trasnfer mode. If the device gets hardreset
for some reason after that, revalidation fails with -ENODEV.This patch makes size checking more robust by moving n_sectors check
from ata_dev_reread_id() to ata_dev_revalidate() after the device is
fully configured. No matter what happens during configuration, a
device must have the same n_sectors after fully configured to be
treated as the same device.Signed-off-by: Tejun Heo
Signed-off-by: Jeff Garzik
