This moves lockdep_init() to before udbg_early_init() as the later
can call things that acquire spinlocks etc... This also makes printk
safer to use earlier.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
When debugging early boot problems, it's common to sprinkle printk's
all over the place. However, on 64-bit powerpc, this can lead to
memory corruption if done too early due to the PACA pointer and
lockdep core not being initialized.
This adds some comments to early_setup() that document when it is
safe to do so in order to save time for whoever has to debug that
stuff next.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
When doing lockdep, I had two patches to initialize paca->_current
early, one bogus, and one correct. Unfortunately both got merged
as the bad one ended up being part of the main lockdep patch by
mistake. This causes memory corruption at boot. This removes
the offending code.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
[POWERPC] Fix of_i2c include for module compilation
Remove #ifdef CONFIG_OF_I2C as this breaks module compilation.
Drivers using this header should depend on OF_I2C anyways, so
there's no need to make this conditional.
Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
[POWERPC] Make default cputable entries reflect selected CPU family
Changes the cputable so that various CPU families that have an exclusive
CONFIG_ option have a more sensible default entry to use if the specific
processor hasn't been identified.
This makes the kernel more generally useful when booted on an unknown
PVR for things like new 4xx variants.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
[POWERPC] spufs: don't requeue victim contex in find_victim if it's not in spu_run
We should not requeue the victim context in find_victim if the owner is
not in spu_run. It's first not needed because leaving the context on
the spu is an optimization and second is harmful because it means the
owner could re-enter spu_run when the context is on the runqueue and
trip the BUG_ON in __spu_update_sched_info.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Stefan Roese [Mon, 5 May 2008 06:53:19 +0000 (16:53 +1000)]
[POWERPC] 4xx: Fix problem with new TLB storage attibute fields on 440x6 core
The new 440x6 core used on AMCC 460EX/GT introduces new storage attibure
fields to the TLB2 word. Those are:
Bit 11 12 13 14 15
WL1 IL1I IL1D IL2I IL2D
With these bits the cache (L1 and L2) can be configured in a more flexible
way, instruction- and data-cache independently now. The "old" I and W bits
are still available and setting these old bits will automically set these
new bits too (for backward compatibilty).
The current code does not clear these fields resulting in disabling the cache
by chance. This patch now makes sure that these new bits are cleared when
the TLB2 word is written.
Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
[POWERPC] spufs: spu_create should send inotify IM_CREATE event
Creating a spufs context or gand using spu_create should send an inotify
event so that things like performance monitors have an easy way to find
out about newly created contexts.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Denis V. Lunev [Fri, 2 May 2008 20:34:05 +0000 (06:34 +1000)]
[POWERPC] Assign PDE->data before gluing PDE into /proc tree
Simply replace proc_create and further data assigned with proc_create_data.
No need to check for data!=NULL after that.
Signed-off-by: Denis V. Lunev <den@openvz.org> Cc: Alexey Dobriyan <adobriyan@openvz.org> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Emil Medve [Fri, 2 May 2008 20:34:04 +0000 (06:34 +1000)]
[POWERPC] devres: Add devm_ioremap_prot()
We provide an ioremap_flags, so this provides a corresponding
devm_ioremap_prot. The slight name difference is at Ben
Herrenschmidt's request as he plans on changing ioremap_flags to
ioremap_prot in the future.
Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Tejun Heo <htejun@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Daniel Walker [Fri, 2 May 2008 20:34:03 +0000 (06:34 +1000)]
[POWERPC] macintosh: ADB driver: adb_handler_sem semaphore to mutex
Signed-off-by: Daniel Walker <dwalker@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Daniel Walker [Fri, 2 May 2008 20:34:02 +0000 (06:34 +1000)]
[POWERPC] macintosh: windfarm_smu_sat: semaphore to mutex
Signed-off-by: Daniel Walker <dwalker@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Daniel Walker [Fri, 2 May 2008 20:34:01 +0000 (06:34 +1000)]
[POWERPC] macintosh: therm_pm72: driver_lock semaphore to mutex
Signed-off-by: Daniel Walker <dwalker@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Luke Browning [Mon, 28 Apr 2008 07:35:56 +0000 (17:35 +1000)]
[POWERPC] spufs: handle faults while the context switch pending flag is set
Currently, page fault handlers don't issue a mfc restart if the context
switch pending flag is set, which can leave us with a hanging DMA after
a context restore.
This patch introduces fault pending flag that is set by the fault
handler and read by the context switch code, so that the latter can add
the restart bit at the right spot, after it has successfuly saved the
state of the mfc control register.
Signed-off-by: Luke Browning <lukebr@linux.vnet.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Luke Browning [Mon, 28 Apr 2008 04:32:34 +0000 (14:32 +1000)]
[POWERPC] spufs: try to route SPU interrupts to local node
Currently, we re-route SPU interrupts to the current cpu, which may be
on a remote node. In the case of time slicing, all spu interrupts will
end up routed to the same cpu, where the spusched_tick occurs.
This change routes mfc interrupts to the cpu where the controlling
thread last ran, provided that cpu is on the same node as the spu
(otherwise don't reroute interrupts).
This should improve performance and provide a more predictable
environment for processing spu exceptions. In the past we have seen
concurrent delivery of spu exceptions to two cpus. This eliminates that
concern.
Signed-off-by: Luke Browning <lukebr@linux.vnet.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Luke Browning [Fri, 25 Apr 2008 04:00:00 +0000 (14:00 +1000)]
[POWERPC] spufs: set SPU_CONTEXT_SWITCH_PENDING before synchronising SPU irqs
synchronize_irq() provides the serialization for
SPU_CONTEXT_SWITCH_PENDING which is read with a simple load. This
routine guarantees that the relevant interrupt handlers are not running,
so that the next time they do run they will see the update
memory value.
This must be done correctly so that exception handling code does not
restart the mfc in the middle of a context switch while we are trying
to atomically stop it and save state.
Signed-off-by: Luke Browning <lukebr@linux.vnet.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Jeremy Kerr [Wed, 23 Apr 2008 06:02:10 +0000 (16:02 +1000)]
[POWERPC] spufs: don't acquire state_mutex interruptible while performing callback
There's currently no way to tell if spu_process_callback has
returned with the state mutex held, as -EINTR may be returned
by either the syscall or the spu_acquire fail case.
Instead, just do a non-interruptible mutex_lock here.
Jeremy Kerr [Wed, 23 Apr 2008 04:24:27 +0000 (14:24 +1000)]
[POWERPC] spufs: update master runcntl with context lock held
Currently, we update the SPU master run control bit (ie,
spu_enable_spu) in spufs_run_spu before we grab the context mutex. This
can result in races with other processes accessing this context's
resources.
This change moves the spu_enable_spu to after we have acquired the
context lock.
Jeremy Kerr [Thu, 24 Apr 2008 08:15:40 +0000 (18:15 +1000)]
[POWERPC] spufs: fix post-stopped update of MFC_CNTL register
We currently have two issues with the MFC save code:
* save_mfc_decr doesn't handle a transition of 1 -> 0 of the Ds bit
* The Q bit may be stale in the CSA
This change fixes the first issue by clearing the relevant bits from
the MFC_CNTL value in the CSA before or-ing in the updated status.
Also, we add the Q bit to the updated status.
Jeremy Kerr [Wed, 9 Apr 2008 05:24:22 +0000 (15:24 +1000)]
[POWERPC] spufs: fix save of mfc_cntl register
Currently, we can introduce invalid entries into the MFC queues:
1) context starts a DMA
2) context gets scheduled out during a DMA
- kernel saves MFC queue to CSA
- kernel saves 0x0 in csa->mfc_control_RW
3) context gets scheduled in
- csa->mfc_control[Q] ('queues empty') isn't set, so DMA queues are
restored from the CSA
4) context's DMA is completed
5) context gets scheduled out again, no DMA occuring this time
- kernel sees that MFC_CNTL[Q] ('queues empty') is set, so doesn't
touch saved queue data in CSA
- kernel saves 0x0 in csa->mfc_control_RW
6) context gets scheduled in
- csa->mfc_control[Q] ('queues empty') isn't set (we saved is as 0!),
so DMA queues are restored from the CSA
In this last restore, we've restored the queue status from step 2,
which are now invalid.
This change makes save_mfc_cntl() closer to the save/restore sequence,
as specified in the CBE handbook.
Jeremy Kerr [Fri, 4 Apr 2008 06:55:28 +0000 (17:55 +1100)]
[POWERPC] cell: Fix lost interrupts due to fasteoi handler
We may currently lose interrupts during SPE context switch, as we alter
the INT_Route register. Because the IIC uses a per-thread priority
status, changing the interrupt routing to a different thread means that
the IRQ is no longer masked by the priority status, so we end up with
two fasteoi IRQ handlers executing for the one irq_desc. The fasteoi
handler doesn't handle multiple IRQs, so drops the second one.
Fix this by using our own flow handler. This is based on
handle_edge_irq, but issues an eoi after IRQs are handled, and doesn't
do any mask/unmasking.
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes:
kconfig-language.txt: remove bogus hint
kconfig: fix MAC OS X warnings in menuconfig
modpost: i2c aliases need no trailing wildcard
Linus Torvalds [Mon, 5 May 2008 00:07:28 +0000 (17:07 -0700)]
Merge branch 'kvm-updates-2.6.26' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm
* 'kvm-updates-2.6.26' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm:
x86: KVM geust: make setup_secondary_clock definition dependent on local apic
KVM: MMU: Allow more than PAGES_PER_HPAGE write protections per large page
KVM: avoid fx_init() schedule in atomic
KVM: Avoid spurious execeptions after setting registers
KVM: PIT: support mode 4
KVM: x86 emulator: disable writeback on lmsw
KVM: ppc: deliver INTERRUPT_FP_UNAVAIL to the guest
KVM: ppc: Handle guest idle by emulating MSR[WE] writes
KVM: x86: task switch: fix wrong bit setting for the busy flag
KVM: VMX: Enable EPT feature for KVM
KVM: VMX: Prepare an identity page table for EPT in real mode
KVM: Export necessary function for EPT
KVM: MMU: Remove #ifdef CONFIG_X86_64 to support 4 level EPT
KVM: MMU: Add EPT support
KVM: Add kvm_x86_ops get_tdp_level()
KVM: MMU: Move some definitions to a header file
KVM: VMX: EPT Feature Detection
Ingo Molnar [Sun, 4 May 2008 07:29:43 +0000 (09:29 +0200)]
sysfs: build fix
x86.git testing found the following build failure on v2.6.26-rc1:
In file included from include/linux/kobject.h:22,
from include/linux/module.h:17,
from include/linux/crypto.h:22,
from arch/x86/kernel/asm-offsets_32.c:8,
from arch/x86/kernel/asm-offsets.c:3:
include/linux/sysfs.h:201: error: redefinition of 'sysfs_update_group'
include/linux/sysfs.h:195: error: previous definition of 'sysfs_update_group' was here
make[1]: *** [arch/x86/kernel/asm-offsets.s] Error 1
make: *** [prepare0] Error 2
the reason for the build failure is the duplicate definition of the
sysfs_update_group() inline function in include/linux/sysfs.h.
The duplication was a merge error: it was added via -mm by commit v2.6.25-7262-g2850699, "sysfs: sysfs_update_group stub for
CONFIG_SYSFS=n" a day before v2.6.26-rc1, but a day before that the same
commit was already merged upstream via the sysfs tree, with commit v2.6.25-7211-g1cbfb7a.
Linus Torvalds [Mon, 5 May 2008 00:04:16 +0000 (17:04 -0700)]
Make forced module loading optional
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.
Adrian Bunk [Sat, 3 May 2008 19:26:17 +0000 (22:26 +0300)]
fix asm-mips/types.h syntax error
This patch fixes the following compile error caused by
commit 23cf11ddb5099f8c7f7cb3eb154bff0faf31cae9
(mips: types: use <asm-generic/int-*.h> for the mips architecture):
<-- snip -->
...
CC kernel/bounds.s
In file included from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/types.h:12,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/page-flags.h:8,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/kernel/bounds.c:9:
include2/asm/types.h:56:2: error: #endif without #if
make[2]: *** [kernel/bounds.s] Error 1
<-- snip -->
Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Adrian Bunk [Sat, 3 May 2008 20:51:03 +0000 (23:51 +0300)]
fix asm-alpha/types.h breakage
This patch fixes the following compile error on alpha caused by
commit 3726c23df8e4d95b6f2b335dfa90e3f4850a8a00
(alpha: types: use <asm-generic/int-*.h> for the alpha architecture):
<-- snip -->
...
CC arch/alpha/kernel/asm-offsets.s
In file included from include2/asm/topology.h:6,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/topology.h:34,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/mmzone.h:683,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/gfp.h:4,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/slab.h:12,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/percpu.h:5,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/rcupdate.h:39,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/pid.h:4,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/sched.h:74,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/arch/alpha/kernel/asm-offsets.c:9:
include2/asm/machvec.h:44: error: expected declaration specifiers or '...' before 'dma_addr_t'
include2/asm/machvec.h:44: error: expected declaration specifiers or '...' before 'dma_addr_t'
In file included from /home/bunk/linux/kernel-2.6/git/linux-2.6/arch/alpha/kernel/asm-offsets.c:12:
include2/asm/io.h:94: warning: type defaults to 'int' in declaration of 'dma_addr_t'
include2/asm/io.h:94: warning: variable 'dma_addr_t' declared 'inline'
include2/asm/io.h:94: error: expected ',' or ';' before 'isa_page_to_bus'
make[2]: *** [arch/alpha/kernel/asm-offsets.s] Error 1
<-- snip -->
Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Rusty Russell [Fri, 2 May 2008 11:14:20 +0000 (21:14 +1000)]
x86: fix up bootparam.h for userspace inclusion
commit 8b664aa66e824a0ddf4ec56d41fa0cf7bb374de6 (x86, boot: add linked
list of struct setup_data) put a new struct in bootparam.h, but didn't
use the userspace-safe types.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Huang Ying <ying.huang@intel.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ben [Sat, 3 May 2008 20:39:42 +0000 (22:39 +0200)]
x86: remove dell reboot dmi quirk board name match
http://bugzilla.kernel.org/show_bug.cgi?id=10547
Newer Dell OptiPlex 745s hang before rebooting after 'sudo reboot'.
A patch for some versions of the OptiPlex was proposed here --
http://lkml.org/lkml/2007/6/5/59 -- and is included in 2.6.23 and
later kernels, according to
http://lxr.linux.no/linux+v2.6.23/arch/i386/kernel/reboot.c . However,
the DMI_BOARD_NAME ("0WF810") is too restrictive. Newer OptiPlex
machines have a DMI_BOARD_NAME of "0RF703". I therefore suggest
adding another clause to reboot.c, similar to the one in the original
patch, but matching a DMI_BOARD_NAME of "0RF703".
On further inspection, it seems that there are other DMI_BOARD_NAMEs
for this same machine. They seem to change from time to time, which
means that the current code is fragile. Moreover, using bios reboot
should not break non-SFF OptiPlex 745s, and so a reasonable fix is to
simply drop the match on DMI_BOARD_NAME.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Sam Ravnborg [Thu, 1 May 2008 09:31:07 +0000 (11:31 +0200)]
kbuild, suspend, x86: fix rebuild of wakeup.bin
In kernel/acpi/realmode/Makefile use the 'always'
variable to say that wakeup.bin should always
be made.
In acpi/Makefile we then do not need to specify the
requested target and we avoid the message from make:
`arch/x86/kernel/acpi/realmode/wakeup.bin' is up to date.
Add wakeup.lds to list af targets to avoid rebuilding
wakeup.bin - from Roland McGrath.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Rafael J. Wysocki <rjw@sisk.pl> Cc: Pavel Machek <pavel@suse.cz> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Fri, 2 May 2008 19:24:30 +0000 (21:24 +0200)]
x86: undo visws/numaq build changes
arch/x86/pci/Makefile_32 has a nasty detail. VISWS and NUMAQ build
override the generic pci-y rules. This needs a proper cleanup, but
that needs more thoughts. Undo
This make sure not to schedule in atomic during fx_init. I also
changed the name of fpu_init to fx_finit to avoid duplicating the name
with fpu_init that is already used in the kernel, this makes grep
simpler if nothing else.
Signed-off-by: Andrea Arcangeli <andrea@qumranet.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Jan Kiszka [Wed, 30 Apr 2008 15:59:04 +0000 (17:59 +0200)]
KVM: Avoid spurious execeptions after setting registers
Clear pending exceptions when setting new register values. This avoids
spurious exceptions after restoring a vcpu state or after
reset-on-triple-fault.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
The in-kernel PIT emulation ignores pending timers if operating under
mode 4, which for example DragonFlyBSD uses (and Plan9 too, apparently).
Mode 4 seems to be similar to one-shot mode, other than the fact that it
starts counting after the next CLK pulse once programmed, while mode 1
starts counting immediately, so add a FIXME to enhance precision.
Avi Kivity [Wed, 30 Apr 2008 13:13:36 +0000 (16:13 +0300)]
KVM: x86 emulator: disable writeback on lmsw
The recent changes allowing memory operands with lmsw and smsw left
lmsw with writeback enabled. Since lmsw has no oridinary destination
operand, the dst pointer was not initialized, resulting in an oops.
KVM: ppc: deliver INTERRUPT_FP_UNAVAIL to the guest
This patch adds the delivery of INTERRUPT_FP_UNAVAIL exceptions to the guest.
It's needed if a guest uses ppc binaries using the Floating point instructions.
Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> Acked-by: Hollis Blanchard <hollisb@us.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Jean Delvare [Fri, 2 May 2008 18:37:21 +0000 (20:37 +0200)]
modpost: i2c aliases need no trailing wildcard
Not all device types need a wildcard at the end of their module
aliases. In particular, for i2c module aliases, the trailing wildcard
is not only unneeded, it could also cause the wrong driver to be
loaded.
As I2C devices have no IDs, i2c module aliases are simple, arbitrary
device names. For example:
This would cause trouble if one I2C chip name matches the beginning of
another I2C chip name and both chips are supported by different
drivers. For example, an i2c device named lm9042 would cause the lm90
driver to be loaded, while it doesn't support that device. This case
has yet to be seen in practice, but still, I'd like to fix it now. The
cleanest fix is to remove the trailing wildcard from i2c module aliases.
Here's a patch doing this.
Not all device type aliases need a trailing wildcard, in particular
the i2c aliases don't. Don't add a wildcard by default in do_table(),
instead let each device type handler add it if needed.
I have tested types acpi, dmi, eisa, i2c, ide, ieee1394, input, pci,
pcmcia, platform, pnp, scsi, serio, ssb and usb. Other types (ccw, of,
vio, parisc, sdio and virtio) are untested. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Ulrich Drepper [Sat, 3 May 2008 19:28:45 +0000 (15:28 -0400)]
tiny mq_open optimization
A very small cleanup for mq_open.
We do not have to call set_close_on_exit if we create the file
descriptor right away with the flag set. We have a function for this
now. The resulting code is smaller and a tiny bit faster.
Ulrich Drepper [Sat, 3 May 2008 19:10:37 +0000 (15:10 -0400)]
unified (weak) sys_pipe implementation
This replaces the duplicated arch-specific versions of "sys_pipe()" with
one unified implementation. This removes almost 250 lines of duplicated
code.
It's marked __weak, so that *if* an architecture wants to override the
default implementation it can do so by simply having its own replacement
version, since many architectures use alternate calling conventions for
the 'pipe()' system call for legacy reasons (ie traditional UNIX
implementations often return the two file descriptors in registers)
I still haven't changed the cris version even though Linus says the BKL
isn't needed. The arch maintainer can easily do it if there are really
no obstacles.
* git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-inttypes: (24 commits)
Make constants in kernel/timeconst.h fixed 64 bits
types: add C99-style constructors to <asm-generic/int-*.h>
xtensa: types: use <asm-generic/int-*.h> for the xtensa architecture
x86: types: use <asm-generic/int-*.h> for the x86 architecture
v850: types: use <asm-generic/int-*.h> for the v850 architecture
sparc64: types: use <asm-generic/int-*.h> for the sparc64 architecture
sparc: types: use <asm-generic/int-*.h> for the sparc architecture
sh: types: use <asm-generic/int-*.h> for the sh architecture
s390: types: use <asm-generic/int-*.h> for the s390 architecture
powerpc: types: use <asm-generic/int-*.h> for the powerpc architecture
parisc: types: use <asm-generic/int-*.h> for the parisc architecture
mn10300: types: use <asm-generic/int-*.h> for the mn10300 architecture
mips: types: use <asm-generic/int-*.h> for the mips architecture
m68k: types: use <asm-generic/int-*.h> for the m68k architecture
m32r: types: use <asm-generic/int-*.h> for the m32r architecture
ia64: types: use <asm-generic/int-*.h> for the ia64 architecture
h8300: types: use <asm-generic/int-*.h> for the h8300 architecture
frv: types: use <asm-generic/int-*.h> for the frv architecture
cris: types: use <asm-generic/int-*.h> for the cris architecture
blackfin: types: use <asm-generic/int-*.h> for the blackfin architecture
...
Linus Torvalds [Sat, 3 May 2008 17:18:40 +0000 (10:18 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6:
slub: #ifdef simplification
slabinfo: Support printout of the number of fallbacks
slub: Whitespace cleanup and use of strict_strtoul
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (47 commits)
rose: Wrong list_lock argument in rose_node seqops
netns: Fix reassembly timer to use the right namespace
netns: Fix device renaming for sysfs
bnx2: Update version to 1.7.5.
bnx2: Update RV2P firmware for 5709.
bnx2: Zero out context memory for 5709.
bnx2: Fix register test on 5709.
bnx2: Fix remote PHY initial link state.
bnx2: Refine remote PHY locking.
bridge: forwarding table information for >256 devices
tg3: Update version to 3.92
tg3: Add link state reporting to UMP firmware
tg3: Fix ethtool loopback test for 5761 BX devices
tg3: Fix 5761 NVRAM sizes
tg3: Use constant 500KHz MI clock on adapters with a CPMU
hci_usb.h: fix hard-to-trigger race
dccp: ccid2.c, ccid3.c use clamp(), clamp_t()
net: remove NR_CPUS arrays in net/core/dev.c
net: use get/put_unaligned_* helpers
bluetooth: use get/put_unaligned_* helpers
...
* git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
[POWERPC] Bolt in SLB entry for kernel stack on secondary cpus
[POWERPC] PS3: Update ps3_defconfig
[POWERPC] PS3: Remove unsupported wakeup sources
[POWERPC] PS3: Make ps3_virq_setup and ps3_virq_destroy static
[POWERPC] PS3: Add time include to lpm
[POWERPC] Fix slb.c compile warnings
[POWERPC] Xilinx: Fix compile warnings
[POWERPC] Squash build warning for print of resource_size_t in fsl_soc.c
[RAPIDIO] fix current kernel-doc notation
[POWERPC] 86xx: mpc8610_hpcd: add support for PCI Express x8 slot
Fix a potential issue in mpc52xx uart driver
[POWERPC] mpc5200: Allow for fixed speed MII configurations
[POWERPC] 86xx: Fix the wrong serial1 interrupt for 8610 board
Heiko Carstens [Fri, 2 May 2008 10:49:40 +0000 (12:49 +0200)]
clocksource: Fix permissions for available_clocksource
File permissions for
/sys/devices/system/clocksource/clocksource0/available_clocksource
are 600 which allows write access. But this is in fact a read only
file. So change permissions to 400.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: John Stultz <johnstul@us.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Oliver Hartkopp [Wed, 30 Apr 2008 21:04:37 +0000 (23:04 +0200)]
hrtimer: remove duplicate helper function
The helper function hrtimer_callback_running() is used in
kernel/hrtimer.c as well as in the updated net/can/bcm.c which now
supports hrtimers. Moving the helper function to hrtimer.h removes the
duplicate definition in the C-files.
Signed-off-by: Oliver Hartkopp <oliver@hartkopp.net> Cc: David Miller <davem@davemloft.net> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Bernard Pidoux [Sat, 3 May 2008 00:03:22 +0000 (17:03 -0700)]
rose: Wrong list_lock argument in rose_node seqops
In rose_node_start() as well as in rose_node_stop() __acquires() and
spin_lock_bh() were wrongly passing rose_neigh_list_lock instead of
rose_node_list_lock arguments.
Signed-off-by: Bernard Pidoux <f6bvp@amsat.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Lezcano [Sat, 3 May 2008 00:00:58 +0000 (17:00 -0700)]
netns: Fix device renaming for sysfs
When a netdev is moved across namespaces with the
'dev_change_net_namespace' function, the 'device_rename' function is
used to fixup kobject and refresh the sysfs tree. The device_rename
function will call kobject_rename and this one will check if there is
an object with the same name and this is the case because we are
renaming the object with the same name.
The use of 'device_rename' seems for me wrong because we usually don't
rename it but just move it across namespaces. As we just want to do a
mini "netdev_[un]register", IMO the functions
'netdev_[un]register_kobject' should be used instead, like an usual
network device [un]registering.
This patch replace device_rename by netdev_unregister_kobject,
followed by netdev_register_kobject.
The netdev_register_kobject will call device_initialize and will raise
a warning indicating the device was already initialized. In order to
fix that, I split the device initialization into a separate function
and use it together with 'netdev_register_kobject' into
register_netdevice. So we can safely call 'netdev_register_kobject' in
'dev_change_net_namespace'.
This fix will allow to properly use the sysfs per namespace which is
coming from -mm tree.
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Acked-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Chan [Fri, 2 May 2008 23:57:59 +0000 (16:57 -0700)]
bnx2: Update RV2P firmware for 5709.
The new RV2P firmware fixes 2 issues:
1. The jumbo rx buffer page size is now configurable and set to the
proper PAGE_SIZE. Before, it was assumed to be always 4K.
2. Driver sometimes would crash when receiving jumbo packets mixed
with firmware management packets. This was caused by the old
firmware DMA'ing to the wrong address.
Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Chan [Fri, 2 May 2008 23:57:26 +0000 (16:57 -0700)]
bnx2: Zero out context memory for 5709.
We should zero out the context memory for 5709 before each reset. When
we resume after suspend for example, the memory may not be zero and the
chip may not function correctly.
Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: Benjamin Li <benli@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Chan [Fri, 2 May 2008 23:56:44 +0000 (16:56 -0700)]
bnx2: Fix remote PHY initial link state.
On some remote PHY blade systems, the driver receives no initial link
interrupt. As a result, the GMII/MII MAC mode does not get setup properly.
To fix this problem, we add an initial poll of the link state after chip
reset.
With this change, the setting of the initial carrier state in the init
code can be eliminated.
Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: Benjamin Li <benli@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Chan [Fri, 2 May 2008 23:56:16 +0000 (16:56 -0700)]
bnx2: Refine remote PHY locking.
bnx2_set_remote_link() should be called under bp->phy_lock to protect
against concurrent polling and interrupt calls. This change is needed
by the next patch which will add one initial poll of the remote PHY
link status.
Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: Benjamin Li <benli@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
bridge: forwarding table information for >256 devices
The forwarding table binary interface (my bad choice), only exposes
the port number of the first 8 bits. The bridge code was limited to
256 ports at the time, but now the kernel supports up 1024 ports, so
the upper bits are lost when doing:
brctl showmacs
The fix is to squeeze the extra bits into small hole left in data
structure, to maintain binary compatiablity.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Carlson [Fri, 2 May 2008 23:49:50 +0000 (16:49 -0700)]
tg3: Update version to 3.92
This patch updates the version number to 3.92.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Carlson [Fri, 2 May 2008 23:49:29 +0000 (16:49 -0700)]
tg3: Add link state reporting to UMP firmware
All variants of the 5714, 5715, and 5780 offer a feature called the
"Universal Management Port". This feature is implemented in firmware
and is largely transparent to the driver, except...
It turns out that the UMP firmware needs to know the current status
of the link. Because the firmware cannot touch the PHY registers while
the driver is in control of the device, it needs the driver to report
link status changes through an additional handshaking mechanism.
Without this handshake, it has been observed in the field that the UMP
firmware will not operate correctly.
This patch implements the new handshake with the UMP firmware. Since
the handshake uses the same mechanism ASF heartbeats use, code was
added to detect and wait for completion of a pending previous event.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Carlson [Fri, 2 May 2008 23:48:59 +0000 (16:48 -0700)]
tg3: Fix ethtool loopback test for 5761 BX devices
A CPMU related loopback test bug existed for AX revisions of the 5761.
While that errata has been fixed, the CPMU still slows down the core
clock too far to run the loopback test successfully. This patch
disables the CPMU LINK_SPEED mode just like we do with the AX
revisions of the 5761 and all revisions of the 5784.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Carlson [Fri, 2 May 2008 23:48:36 +0000 (16:48 -0700)]
tg3: Fix 5761 NVRAM sizes
The 5761 NVRAM sizes assigned to the nvram_size member are half as big
as they should be. This patch corrects the NVRAM sizes and replaces
the hardcoded constants with preprocessor constants for readability.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
projects / linux-2.6 / log