15 Oct, 2007
1 commit
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Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds
13 Oct, 2007
13 commits
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* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: (37 commits)
PCI: merge almost all of pci_32.h and pci_64.h together
PCI: X86: Introduce and enable PCI domain support
PCI: Add 'nodomains' boot option, and pci_domains_supported global
PCI: modify PCI bridge control ISA flag for clarity
PCI: use _CRS for PCI resource allocation
PCI: avoid P2P prefetch window for expansion ROMs
PCI: skip ISA ioresource alignment on some systems
PCI: remove transparent bridge sizing
pci: write file size to inode on proc bus file write
pci: use size stored in proc_dir_entry for proc bus files
pci: implement "pci=noaer"
PCI: fix IDE legacy mode resources
MSI: Use correct data offset for 32-bit MSI in read_msi_msg()
PCI: Fix incorrect argument order to list_add_tail() in PCI dynamic ID code
PCI: i386: Compaq EVO N800c needs PCI bus renumbering
PCI: Remove no longer correct documentation regarding MSI vector assignment
PCI: re-enable onboard sound on "MSI K8T Neo2-FIR"
PCI: quirk_vt82c586_acpi: Omit reading PCI revision ID
PCI: quirk amd_8131_mmrbc: Omit reading pci revision ID
cpqphp: Use PCI_CLASS_REVISION instead of PCI_REVISION_ID for read
... -
On at least ARM (and I'm told MIPS too) dma_free_coherent() has a newish
call context requirement: unlike its dma_alloc_coherent() sibling, it may
not be called with IRQs disabled. (This was new behavior on ARM as of late
2005, caused by ARM SMP updates.) This little surprise can be annoyingly
driver-visible.Since it looks like that restriction won't be removed, this patch changes
the definition of the API to include that requirement. Also, to help catch
nonportable drivers, it updates the x86 and swiotlb versions to include the
relevant warnings. (I already observed that it trips on the
bus_reset_tasklet of the new firewire_ohci driver.)Signed-off-by: David Brownell
Cc: David Miller
Acked-by: Russell King
Cc: Andi Kleen
Signed-off-by: Andrew Morton
Signed-off-by: Greg Kroah-Hartman -
I've been hacking on these files for a while now, might as well make it
official...Signed-off-by: Greg Kroah-Hartman
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There is only one user of it, and it is only a wrapper for kset_init().
Signed-off-by: Greg Kroah-Hartman
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Sysfs file poll implementation is scattered over sysfs and kobject.
Event numbering is done in sysfs_dirent but wait itself is done on
kobject. This not only unecessarily bloats both kobject and
sysfs_dirent but is also buggy - if a sysfs_dirent is removed while
there still are pollers, the associaton betwen the kobject and
sysfs_dirent breaks and kobject may be freed with the pollers still
sleeping on it.This patch moves whole poll implementation into sysfs_open_dirent.
Each time a sysfs_open_dirent is created, event number restarts from 1
and pollers sleep on sysfs_open_dirent. As event sequence number is
meaningless without any open file and pollers should have open file
and thus sysfs_open_dirent, this ephemeral event counting works and is
a saner implementation.This patch fixes the dnagling sleepers bug and reduces the sizes of
kobject and sysfs_dirent by one pointer.Signed-off-by: Tejun Heo
Acked-by: Cornelia Huck
Signed-off-by: Greg Kroah-Hartman -
Signed-off-by: Kay Sievers
Signed-off-by: Greg Kroah-Hartman -
Move uevent specific logic from the core into kobject_uevent.c, which
does no longer require to link the unused string array if hotplug
is not compiled in.Signed-off-by: Kay Sievers
Signed-off-by: Greg Kroah-Hartman -
While shadow directories appear to be a good idea, the current scheme
of controlling their creation and destruction outside of sysfs appears
to be a locking and maintenance nightmare in the face of sysfs
directories dynamically coming and going. Which can now occur for
directories containing network devices when CONFIG_SYSFS_DEPRECATED is
not set.This patch removes everything from the initial shadow directory support
that allowed the shadow directory creation to be controlled at a higher
level. So except for a few bits of sysfs_rename_dir everything from
commit b592fcfe7f06c15ec11774b5be7ce0de3aa86e73 is now gone.Signed-off-by: Eric W. Biederman
Signed-off-by: Tejun Heo
Signed-off-by: Greg Kroah-Hartman -
Due to historical reasons, struct kobject contained a static array for
the name, and a dynamic pointer in case the name got bigger than the
array. That's just dumb, as people didn't always know which variable to
reference, even with the accessor for the kobject name.This patch removes the static array, potentially saving a lot of memory
as the majority of kobjects do not have a very long name.Thanks to Kay for the idea to do this.
Cc: Kay Sievers
Signed-off-by: Greg Kroah-Hartman -
There are no more subsystems, it's a kset now so remove the function and
the only two users, which are in the driver core.Signed-off-by: Greg Kroah-Hartman
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There are no more subsystems, it's a kset now so remove the function and
the only two users, which are in the driver core.Signed-off-by: Greg Kroah-Hartman
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The kernel creates a process for every event that is send, even when
there is no binary it could execute. We are needlessly creating around
200-300 failing processes during early bootup, until we have the chance
to disable it from userspace.This change allows us to disable /sbin/hotplug entirely, if you want to,
by setting UEVENT_HELPER_PATH="" in the kernel config.Signed-off-by: Kay Sievers
Signed-off-by: Greg Kroah-Hartman -
This changes the uevent buffer functions to use a struct instead of a
long list of parameters. It does no longer require the caller to do the
proper buffer termination and size accounting, which is currently wrong
in some places. It fixes a known bug where parts of the uevent
environment are overwritten because of wrong index calculations.Many thanks to Mathieu Desnoyers for finding bugs and improving the
error handling.Signed-off-by: Kay Sievers
Cc: Mathieu Desnoyers
Cc: Cornelia Huck
Signed-off-by: Greg Kroah-Hartman
12 Oct, 2007
2 commits
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Move zlib_inflate_blob() out into it's own source file,
infutil.c, so that things like the powerpc zImage builder
in arch/powerpc/boot/Makefile don't end up trying to
compile it.Signed-off-by: David S. Miller
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* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (408 commits)
[POWERPC] Add memchr() to the bootwrapper
[POWERPC] Implement logging of unhandled signals
[POWERPC] Add legacy serial support for OPB with flattened device tree
[POWERPC] Use 1TB segments
[POWERPC] XilinxFB: Allow fixed framebuffer base address
[POWERPC] XilinxFB: Add support for custom screen resolution
[POWERPC] XilinxFB: Use pdata to pass around framebuffer parameters
[POWERPC] PCI: Add 64-bit physical address support to setup_indirect_pci
[POWERPC] 4xx: Kilauea defconfig file
[POWERPC] 4xx: Kilauea DTS
[POWERPC] 4xx: Add AMCC Kilauea eval board support to platforms/40x
[POWERPC] 4xx: Add AMCC 405EX support to cputable.c
[POWERPC] Adjust TASK_SIZE on ppc32 systems to 3GB that are capable
[POWERPC] Use PAGE_OFFSET to tell if an address is user/kernel in SW TLB handlers
[POWERPC] 85xx: Enable FP emulation in MPC8560 ADS defconfig
[POWERPC] 85xx: Killed
[POWERPC] 85xx: Add cpm nodes for 8541/8555 CDS
[POWERPC] 85xx: Convert mpc8560ads to the new CPM binding.
[POWERPC] mpc8272ads: Remove muram from the CPM reg property.
[POWERPC] Make clockevents work on PPC601 processors
...Fixed up conflict in Documentation/powerpc/booting-without-of.txt manually.
11 Oct, 2007
2 commits
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Signed-off-by: Denys Vlasenko
Acked-by: Michael Chan
Signed-off-by: David S. Miller -
Each netlink socket will live in exactly one network namespace,
this includes the controlling kernel sockets.This patch updates all of the existing netlink protocols
to only support the initial network namespace. Request
by clients in other namespaces will get -ECONREFUSED.
As they would if the kernel did not have the support for
that netlink protocol compiled in.As each netlink protocol is updated to be multiple network
namespace safe it can register multiple kernel sockets
to acquire a presence in the rest of the network namespaces.The implementation in af_netlink is a simple filter implementation
at hash table insertion and hash table look up time.Signed-off-by: Eric W. Biederman
Signed-off-by: David S. Miller
08 Oct, 2007
2 commits
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Modulat lguest started giving linking errors
MODPOST 1 modules
ERROR: "kasprintf" [drivers/lguest/lg.ko] undefined!Signed-off-by: Alexey Dobriyan
Cc: Rusty Russell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Provide some documentation for CONFIG_LOCK_STAT.
Signed-off-by: Peter Zijlstra
Acked-by: Ingo Molnar
Cc: "Randy.Dunlap"
Cc: Rob Landley
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
03 Oct, 2007
2 commits
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Add CONFIG_DEBUG_PREEMPT support to ppc64: it was useful for testing
get_paca() preemption. Cheat a little, just use debug_smp_processor_id()
in the debug version of get_paca(): it contains all the right checks and
reporting, though get_paca() doesn't really use smp_processor_id().Use local_paca for what might have been called __raw_get_paca().
Silence harmless warnings from io.h and lparcfg.c with local_paca -
it is okay for iseries_lparcfg_data to be referencing shared_proc
with preemption enabled: all cpus should show the same value for
shared_proc.Why do other architectures need TRACE_IRQFLAGS_SUPPORT for DEBUG_PREEMPT?
I don't know, ppc64 appears to get along fine without it.Signed-off-by: Hugh Dickins
Signed-off-by: Paul Mackerras
25 Sep, 2007
1 commit
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Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
24 Aug, 2007
1 commit
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* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6:
PCI: Run k8t_sound_hostbridge quirk only when needed
PCI: disable MSI on RX790
PCI: disable MSI on RD580
PCI: disable MSI on RS690
PCI: make pcie_get_readrq visible in pci.h
PCI: lets kill the 'PCI hidden behind bridge' message
pci/hotplug/cpqphp_ctrl.c: remove stale BKL use
PCI: Document pci_iomap()
PCI: quirk_e100_interrupt() called too early
PCI: Move prototypes for pci_bus_find_capability to include/linux/pci.h
23 Aug, 2007
2 commits
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Introduce CONFIG_CHECK_SIGNATURE to control inclusion of check_signature()
and avoid problems on platforms that don't have readb().Let the few legacy (ISA || PCI || X86) drivers that need check_signature()
select CONFIG_CHECK_SIGNATURE.Signed-off-by: Geert Uytterhoeven
Cc: Jeff Dike
Cc: Heiko Carstens
Cc: Roman Zippel
Cc: Alan Cox
Cc: Martin Schwidefsky
Cc: Russell King
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This useful interface is hardly mentioned anywhere in the in-tree
documentation.Signed-off-by: Rolf Eike Beer
Cc: Tejun Heo
Acked-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Greg Kroah-Hartman
12 Aug, 2007
1 commit
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Add missing "const" qualifiers to the print_hex_dump_bytes() library routines.
(akpm: rumoured to fix some compile warning somewhere)
Signed-off-by: Alan Stern
Cc: Artem Bityutskiy
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
09 Aug, 2007
1 commit
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Trivial fix: mark the buffer to hexdump as const so callers could avoid
casting their const buffers when calling print_hex_dump().The patch is really trivial and I suggest to consider it as a fix
(it fixes GCC warnings) and push it to current tree.Signed-off-by: Artem Bityutskiy
Signed-off-by: Linus Torvalds
01 Aug, 2007
4 commits
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"error" is always equal to 0.
Signed-off-by: Oleg Nesterov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The arm26 port has been in a state where it was far from even compiling
for quite some time.Ian Molton agreed with the removal.
Signed-off-by: Adrian Bunk
Cc: Ian Molton
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
kasprintf pulls in kmalloc which proved to be fatal for at least
bootimage target on alpha.
Move it to a separate file so only users of kasprintf are exposed
to the dependency on kmalloc.Signed-off-by: Sam Ravnborg
Cc: Jeremy Fitzhardinge
Cc: Meelis Roos
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Cc: Jay Estabrook
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add some casts to the LZO compression algorithm after they were removed
during cleanup and shouldn't have been.Signed-off-by: Richard Purdie
Cc: Edward Shishkin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
31 Jul, 2007
1 commit
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Leaving kobject_actions[] in kobject_uevent.c, but putting it outside
the #ifdef looks indeed like the best solution to me. This way, we
avoid adding #ifdef CONFIG_HOTPLUG into core.c, when all other
functions called do not need such a thing.Signed-off-by: Cornelia Huck
Cc: Kay Sievers
Signed-off-by: Greg Kroah-Hartman
25 Jul, 2007
1 commit
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lib/fault-inject.c:168: warning: 'debugfs_create_ul_MAX_STACK_TRACE_DEPTH' defined but not used
Signed-off-by: Stephen Rothwell
Cc: Akinobu Mita
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
22 Jul, 2007
1 commit
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If the swiotlb maps a multi-slab region, swiotlb_sync_single_range() can be
invoked to sync a sub-region which does not include the first slab.
Unfortunately io_tlb_orig_addr[] is only initialised for the first slab,
and hence the call to sync_single() will read a garbage orig_addr in this
case.This patch fixes the issue by initialising all mapped slabs in
io_tlb_orig_addr[]. It also correctly adjusts the buffer pointer in
sync_single() to handle the case that the given dma_addr is not aligned on
a slab boundary.Signed-off-by: Keir Fraser
Cc: "Luck, Tony"
Acked-by: Andi Kleen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
20 Jul, 2007
2 commits
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Slab destructors were no longer supported after Christoph's
c59def9f222d44bb7e2f0a559f2906191a0862d7 change. They've been
BUGs for both slab and slub, and slob never supported them
either.This rips out support for the dtor pointer from kmem_cache_create()
completely and fixes up every single callsite in the kernel (there were
about 224, not including the slab allocator definitions themselves,
or the documentation references).Signed-off-by: Paul Mundt
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Introduce the core lock statistics code.
Lock statistics provides lock wait-time and hold-time (as well as the count
of corresponding contention and acquisitions events). Also, the first few
call-sites that encounter contention are tracked.Lock wait-time is the time spent waiting on the lock. This provides insight
into the locking scheme, that is, a heavily contended lock is indicative of
a too coarse locking scheme.Lock hold-time is the duration the lock was held, this provides a reference for
the wait-time numbers, so they can be put into perspective.1)
lock
2)
... do stuff ..
unlock
3)The time between 1 and 2 is the wait-time. The time between 2 and 3 is the
hold-time.The lockdep held-lock tracking code is reused, because it already collects locks
into meaningful groups (classes), and because it is an existing infrastructure
for lock instrumentation.Currently lockdep tracks lock acquisition with two hooks:
lock()
lock_acquire()
_lock()... code protected by lock ...
unlock()
lock_release()
_unlock()We need to extend this with two more hooks, in order to measure contention.
lock_contended() - used to measure contention events
lock_acquired() - completion of the contentionThese are then placed the following way:
lock()
lock_acquire()
if (!_try_lock())
lock_contended()
_lock()
lock_acquired()... do locked stuff ...
unlock()
lock_release()
_unlock()(Note: the try_lock() 'trick' is used to avoid instrumenting all platform
dependent lock primitive implementations.)It is also possible to toggle the two lockdep features at runtime using:
/proc/sys/kernel/prove_locking
/proc/sys/kernel/lock_stat(esp. turning off the O(n^2) prove_locking functionaliy can help)
[akpm@linux-foundation.org: build fixes]
[akpm@linux-foundation.org: nuke unneeded ifdefs]
Signed-off-by: Peter Zijlstra
Acked-by: Ingo Molnar
Acked-by: Jason Baron
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
19 Jul, 2007
1 commit
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This allows the uevent file to handle any type of uevent action to be
triggered by userspace instead of just the "add" uevent.Signed-off-by: Kay Sievers
Signed-off-by: Greg Kroah-Hartman
18 Jul, 2007
2 commits
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Rather than using a tri-state integer for the wait flag in
call_usermodehelper_exec, define a proper enum, and use that. I've
preserved the integer values so that any callers I've missed should
still work OK.Signed-off-by: Jeremy Fitzhardinge
Cc: James Bottomley
Cc: Randy Dunlap
Cc: Christoph Hellwig
Cc: Andi Kleen
Cc: Paul Mackerras
Cc: Johannes Berg
Cc: Ralf Baechle
Cc: Bjorn Helgaas
Cc: Joel Becker
Cc: Tony Luck
Cc: Kay Sievers
Cc: Srivatsa Vaddagiri
Cc: Oleg Nesterov
Cc: David Howells -
argv_split() is a helper function which takes a string, splits it at
whitespace, and returns a NULL-terminated argv vector. This is
deliberately simple - it does no quote processing of any kind.[ Seems to me that this is something which is already being done in
the kernel, but I couldn't find any other implementations, either to
steal or replace. Keep an eye out. ]Signed-off-by: Jeremy Fitzhardinge
Signed-off-by: Chris Wright
Cc: Andrew Morton
Cc: Randy Dunlap
