25 May, 2010
1 commit
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Add a per-node sysfs file called compact. When the file is written to,
each zone in that node is compacted. The intention that this would be
used by something like a job scheduler in a batch system before a job
starts so that the job can allocate the maximum number of hugepages
without significant start-up cost.Signed-off-by: Mel Gorman
Acked-by: Rik van Riel
Reviewed-by: KOSAKI Motohiro
Reviewed-by: Christoph Lameter
Reviewed-by: Minchan Kim
Reviewed-by: KAMEZAWA Hiroyuki
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
22 May, 2010
19 commits
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In this code section the final S of CONFIG_MODULES was missed making
the whole check uselessSigned-off-by: Christoph Egger
Cc: Mark McLoughlin
Signed-off-by: Greg Kroah-Hartman -
This allows bin_attr->read,write,mmap callbacks to check file specific data
(such as inode owner) as part of any privilege validation.Signed-off-by: Chris Wright
Signed-off-by: Greg Kroah-Hartman -
device_del and device_rename were modified to use
sysfs_delete_link and sysfs_rename_link respectively to ensure
when these operations happen on devices whose classes
are in namespace directories they work properly.Signed-off-by: Eric W. Biederman
Signed-off-by: Benjamin Thery
Signed-off-by: Greg Kroah-Hartman -
Move complete knowledge of namespaces into the kobject layer
so we can use that information when reporting kobjects to
userspace.Signed-off-by: Eric W. Biederman
Signed-off-by: Greg Kroah-Hartman -
While device_shutdown() walks through devices_kset to shutdown all
devices, device unplug events may race to shutdown individual devices.
Specifically, sd_shutdown(), on behalf of fc_starget_delete(), has
been observed deleting devices during device_shutdown()'s list
traversal. So we factor out list_for_each_entry_safe_reverse(...) in
favor of while (!list_empty(...)).Signed-off-by: Hugh Daschbach
Signed-off-by: Greg Kroah-Hartman -
fw_id has the same life time as firmware_priv so it makes sense to move
it into firmware_priv structure instead of allocating separately.Signed-off-by: Dmitry Torokhov
Signed-off-by: Greg Kroah-Hartman -
Split builtin firmware handling into separate functions to clean up the
main body of code.Signed-off-by: Dmitry Torokhov
Signed-off-by: Greg Kroah-Hartman -
Do not create 'timeout' attribute manually, let driver core do it for us.
This also ensures that attribute is cleaned up properly.Signed-off-by: Dmitry Torokhov
Signed-off-by: Greg Kroah-Hartman -
When we use request_firmware_nowait(), userspace may
not want to answer negatively right away when for
example it is answering from an initrd only, but
with request_firmware() it has to in order to not
delay the kernel boot until the request times out.This allows userspace to differentiate between the
two in order to be able to reply negatively to async
requests only when all filesystems have been mounted
and have been checked for the requested firmware file.Signed-off-by: Johannes Berg
Cc: Kay Sievers
Signed-off-by: Greg Kroah-Hartman -
The conversion of device->sem to device->mutex resulted in lockdep
warnings. Create a novalidate class for now until the driver folks
come up with separate classes. That way we have at least the basic
mutex debugging coverage.Add a checkpatch error so the usage is reserved for device->mutex.
[ tglx: checkpatch and compile fix for LOCKDEP=n ]
Signed-off-by: Peter Zijlstra
Signed-off-by: Thomas Gleixner
Signed-off-by: Greg Kroah-Hartman -
The semaphore is semantically a mutex. Convert it to a real mutex and
fix up a few places where code was relying on semaphore.h to be included
by device.h, as well as the users of the trylock function, as that value
is now reversed.Signed-off-by: Thomas Gleixner
Signed-off-by: Greg Kroah-Hartman -
When runtime PM for platform_bus was added, it allowed for platforms
to customize the runtime PM methods since they are defined as weak
symbols.This patch allows platforms to also extend the system PM methods with
custom hooks so runtime PM and system PM extensions can be managed
together by custom platform-specific code.Signed-off-by: Kevin Hilman
Cc: Magnus Damm
Cc: Rafael Wysocki
Cc: Dmitry Torokhov
Cc: Eric Miao
Signed-off-by: Greg Kroah-Hartman -
Make devtmpfs available on (embedded) configurations without SHMEM/TMPFS,
using ramfs instead.Saves ~15KB.
Signed-off-by: Peter Korsgaard
Acked-by: Kay Sievers
Signed-off-by: Greg Kroah-Hartman -
kasprintf combines kmalloc and sprintf, and takes care of the size
calculation itself.The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)//
@@
expression a,flag;
expression list args;
statement S;
@@a =
- \(kmalloc\|kzalloc\)(...,flag)
+ kasprintf(flag,args)
- sprintf(a,args);
//Signed-off-by: Julia Lawall
Signed-off-by: Greg Kroah-Hartman -
This patch (as1351) removes an unnecessary and unwanted assignment
from device_initialize(). The wakeup flags are set to 0 along with
everything else when the device structure is allocated, so we don't
need to do it again. Furthermore, the subsystem might already have
set these flags to their correct values; we don't want to override it.Signed-off-by: Alan Stern
Signed-off-by: Greg Kroah-Hartman -
This patch fix a potential race condition in the driver_bound() function
in the file driver/base/dd.c.The broadcast of the BUS_NOTIFY_BOUND_DRIVER notifier should be done
after adding the new device to the driver list. Otherwise notifier
listener will fail if they use functions like usb_find_interface().The patch is against kernel 2.6.33. Please merge it.
Signed-off-by: Stefani Seibold
Signed-off-by: Greg Kroah-Hartman -
The messages from _request_firmware() informing that firmware is
being requested or built-in firmware is going to be used are printed
at KERN_INFO, which produces lots of noise on systems with huge
numbers of AMD CPUs. Reduce the level of these messages to
KERN_DEBUG to get rid of that noise.Signed-off-by: Rafael J. Wysocki
Signed-off-by: Greg Kroah-Hartman -
fix memory leak introduced by the patch 6e03a201bbe:
firmware: speed up request_firmware()1. vfree won't release pages there were allocated explicitly and mapped
using vmap. The memory has to be vunmap-ed and the pages needs
to be freed explicitly2. page array is moved into the 'struct
firmware' so that we can free it from release_firmware()
and not only in fw_dev_release()The fix doesn't break the firmware load speed.
Cc: Johannes Berg
Cc: Ming Lei
Cc: Catalin Marinas
Singed-off-by: Kay Sievers
Signed-off-by: David Woodhouse
Signed-off-by: Tomas Winkler
Signed-off-by: Greg Kroah-Hartman -
Without CONFIG_CPUMASK_OFFSTACK, simply inverting cpu_online_mask leads
to CPUs beyond nr_cpu_ids to be displayed twice and CPUs not even
possible to be displayed as offline.Signed-off-by: Jan Beulich
Cc: Andi Kleen
Cc: Stephen Rothwell
Signed-off-by: Andrew Morton
Cc: stable
Signed-off-by: Greg Kroah-Hartman
21 May, 2010
1 commit
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
PM: PM QOS update fix
Freezer / cgroup freezer: Update stale locking comments
PM / platform_bus: Allow runtime PM by default
i2c: Fix bus-level power management callbacks
PM QOS update
PM / Hibernate: Fix block_io.c printk warning
PM / Hibernate: Group swap ops
PM / Hibernate: Move the first_sector out of swsusp_write
PM / Hibernate: Separate block_io
PM / Hibernate: Snapshot cleanup
FS / libfs: Implement simple_write_to_buffer
PM / Hibernate: document open(/dev/snapshot) side effects
PM / Runtime: Add sysfs debug files
PM: Improve device power management document
PM: Update device power management document
PM: Allow runtime_suspend methods to call pm_schedule_suspend()
PM: pm_wakeup - switch to using bool
20 May, 2010
1 commit
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* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (127 commits)
sh: update defconfigs.
sh: Fix up the NUMA build for recent LMB changes.
sh64: provide a stub per_cpu_trap_init() definition.
sh: fix up CONFIG_KEXEC=n build.
sh: fixup the docbook paths for clock framework shuffling.
driver core: Early dev_name() depends on slab_is_available().
sh: simplify WARN usage in SH clock driver
sh: Check return value of clk_get on ms7724
sh: Check return value of clk_get on ecovec24
sh: move sh clock-cpg.c contents to drivers/sh/clk-cpg.c
sh: move sh clock.c contents to drivers/sh/clk.
sh: move sh asm/clock.h contents to linux/sh_clk.h V2
sh: remove unused clock lookup
sh: switch boards to clkdev
sh: switch sh4-202 to clkdev
sh: switch shx3 to clkdev
sh: switch sh7757 to clkdev
sh: switch sh7763 to clkdev
sh: switch sh7780 to clkdev
sh: switch sh7786 to clkdev
...
18 May, 2010
2 commits
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…/git/tip/linux-2.6-tip
* 'core-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86/amd-iommu: Add amd_iommu=off command line option
iommu-api: Remove iommu_{un}map_range functions
x86/amd-iommu: Implement ->{un}map callbacks for iommu-api
x86/amd-iommu: Make amd_iommu_iova_to_phys aware of multiple page sizes
x86/amd-iommu: Make iommu_unmap_page and fetch_pte aware of page sizes
x86/amd-iommu: Make iommu_map_page and alloc_pte aware of page sizes
kvm: Change kvm_iommu_map_pages to map large pages
VT-d: Change {un}map_range functions to implement {un}map interface
iommu-api: Add ->{un}map callbacks to iommu_ops
iommu-api: Add iommu_map and iommu_unmap functions
iommu-api: Rename ->{un}map function pointers to ->{un}map_range -
Make the platform resource input parameters of platform_device_add_resources()
and platform_device_register_simple() const, as the resources are copied and
never modified.Signed-off-by: Geert Uytterhoeven
Acked-by: Greg Kroah-Hartman
13 May, 2010
2 commits
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The early dev_name() setup needs to do an allocation which can only be
satisfied under slab_is_available() conditions. Some of the early
platform drivers may be initialized before this point, and those still
need to contend themselves with an empty dev_name.This fixes up a regression with the SH earlyprintk which was bailing out
prior to hitting the early probe path due to not being able to satisfy
the early allocation. Other early platform drivers (such as the early
timers) that need to match the dev name are sufficiently late that
allocations are already possible.Signed-off-by: Paul Mundt
11 May, 2010
4 commits
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Conflicts:
arch/x86/kernel/amd_iommu.c -
Currently the default runtime PM callbacks for platform devices return
-ENOSYS, preventing the use of runtime PM platforms until they have
provided at least a default implementation. This hinders the use of
runtime PM by devices which work with many platforms such as memory
mapped devices, MFDs and on chip IPs shared by multiple architectures.Change the default implementation to the standard pm_generic_runtime
one, allowing drivers to use runtime PM without per-architecture
changes.Signed-off-by: Mark Brown
Acked-by: Greg Kroah-Hartman
Signed-off-by: Rafael J. Wysocki -
Add a few sysfs files relating to runtime power management for
advanced debug purposes:runtime_enabled: is runtime PM enabled for this device? States
are "enabled", "disabled", "forbidden" or a combination
of the latter two.runtime_status: what state is the device in currently? E.g., it
reports "suspended" for runtime-suspended devices, and
"active" for active devices. NOTE: if runtime_enabled
returns "disabled", the value of this file may not
reflect its physical state.runtime_usage: the runtime PM usage count of a device
runtime_active_kids: the runtime PM children usage count of a device, or
0 if the ignore_children flag is set.Also, CONFIG_PM_SLEEP_ADVANCED_DEBUG is not defined in any Kconfig
file, so replace it with CONFIG_PM_ADVANCED_DEBUG.Signed-off-by: Dominik Brodowski
Acked-by: Alan Stern
Signed-off-by: Rafael J. Wysocki -
This patch (as1361) changes the runtime PM interface slightly; it
allows suspend requests to be scheduled while the runtime_suspend
method is running. If the method succeeds then the scheduled request
is cancelled, whereas if the method fails then an idle notification is
sent only if no request was scheduled.Being able to schedule suspend requests from within a runtime_suspend
method is useful for drivers that need to test for idleness and
suspend the device all while holding a single spinlock, or for drivers
that want to check for idleness by polling.Signed-off-by: Alan Stern
Signed-off-by: Rafael J. Wysocki
26 Apr, 2010
1 commit
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Conflicts:
arch/sh/kernel/dwarf.c
drivers/dma/shdma.cSigned-off-by: Paul Mundt
10 Apr, 2010
1 commit
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This reverts commit ba168fc37dea145deeb8fa9e7e71c748d2e00d74.
It changes user-visible sysfs interfaces, and breaks some existing user
space applications which apparently rely on the fact that the output
does not contain the "0x" prefix.Requested-by: Heiko Carstens
Acked-by: KOSAKI Motohiro
Acked-by: Wu Fengguang
Signed-off-by: Linus Torvalds
07 Apr, 2010
1 commit
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NODEMASK_ALLOC/FREE are mapped to kmalloc/free if NODES_SHIFT > 8.
Among its several users, drivers/base/node.c wasn't including slab.h
leading to build failure if NODES_SHIFT > 8. Include slab.h from
drivers/base/node.c.This isn't an ideal solution but including slab.h directly from
nodemask.h is not an option because nodemask.h gets included
everywhere. For now, make it work by including slab.h from its users.Signed-off-by: Tejun Heo
Reported-by: Ingo Molnar
06 Apr, 2010
1 commit
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* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
[SCSI] qla1280: retain firmware for error recovery
[SCSI] attirbute_container: Initialize sysfs attributes with sysfs_attr_init
[SCSI] advansys: fix regression with request_firmware change
[SCSI] qla2xxx: Updated version number to 8.03.02-k2.
[SCSI] qla2xxx: Prevent sending mbx commands from sysfs during isp reset.
[SCSI] qla2xxx: Disable MSI on qla24xx chips other than QLA2432.
[SCSI] qla2xxx: Check to make sure multique and CPU affinity support is not enabled at the same time.
[SCSI] qla2xxx: Correct vp_idx checking during PORT_UPDATE processing.
[SCSI] qla2xxx: Honour "Extended BB credits" bit for CNAs.
[SCSI] scsi_transport_fc: Make sure commands are completed when rport is offline
[SCSI] libiscsi: Fix recovery slowdown regression
05 Apr, 2010
1 commit
30 Mar, 2010
2 commits
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…it slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com> -
Conflicts:
arch/sh/kernel/cpu/clock.cSigned-off-by: Paul Mundt
29 Mar, 2010
1 commit
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This is just a simple refactoring patch on top of the early dev_name()
support, converting from kstrdup() to kasprintf() as suggested by Kay.Signed-off-by: Paul Mundt
28 Mar, 2010
1 commit
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All of the SCSI transport classes are suddenly spitting lockdep
warnings. According to Eric Biderman this is because lockdep needs
static initialisers and the attribute container way of doing things
end up with dynamic sysfs attributes. Fix this by calling
sysfs_attr_init which sets the lockdep key correctly.Tested-by: Christof Schmitt
Signed-off-by: James Bottomley
24 Mar, 2010
1 commit
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The new-style dev_pm_ops provide callbacks for both IRQs enabled
and disabled. However, the _noirq variants were only called for
buses registered with a device, not for classes and types.In order to properly use dev_pm_ops in class pcmcia_socket_class,
support _noirq actions also on classes and types.Signed-off-by: Dominik Brodowski
Acked-by: Rafael J. Wysocki