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17 years agoMerge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
Linus Torvalds [Sun, 4 Mar 2007 21:15:00 +0000 (13:15 -0800)]
Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  [MIPS] MTX1: clear PCI errors
  [MIPS] MTX1: add idsel cardbus ressources
  [MIPS] MTX1: remove unneeded settings
  [MIPS] dma_sync_sg_for_cpu is a no-op except for non-coherent R10000s.
  [MIPS] Cobalt: update reserved resources
  [MIPS] SN: PCI fixup needs to include <irq.h>.
  [MIPS] DMA: Fix a bunch of warnings due to missing inline keywords.
  [MIPS] RM: It should be #ifdef CONFIG_FOO not #if CONFIG_FOO ...
  [MIPS] Fix and cleanup the mess that a dozen prom_printf variants are.
  [MIPS] DEC: Remove redeclarations of mips_machgroup and mips_machtype.
  [MIPS] No need to write c0_compare in plat_timer_setup
  [MIPS] Convert to RTC-class ds1742 driver
  [MIPS] Oprofile: Add missing break statements.
  [MIPS] jmr3927: build fix
  [MIPS] SNI: Fix mc146818_decode_year
  [MIPS] Replace sys32_timer_create with the generic compat_sys_timer_create.
  [MIPS] Replace sys32_socketcall with the generic compat_sys_socketcall.
  [MIPS] N32 waitid is the same as o32.

17 years ago[MIPS] MTX1: clear PCI errors
Florian Fainelli [Fri, 2 Mar 2007 21:08:01 +0000 (22:08 +0100)]
[MIPS] MTX1: clear PCI errors

This patch clears PCI errors after showing more debug informations.

Signed-off-by: Florian Fainelli <florian.fainelli@int-evry.fr>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] MTX1: add idsel cardbus ressources
Florian Fainelli [Fri, 2 Mar 2007 21:07:48 +0000 (22:07 +0100)]
[MIPS] MTX1: add idsel cardbus ressources

Adds cardbus ressources for MTX1 boards which have a PCMCIA controller.

Signed-off-by: Florian Fainelli <florian.fainelli@int-evry.fr>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] MTX1: remove unneeded settings
Florian Fainelli [Fri, 2 Mar 2007 21:07:41 +0000 (22:07 +0100)]
[MIPS] MTX1: remove unneeded settings

This patch removes unnecessary settings at setup time.

Signed-off-by: Florian Fainelli <florian.fainelli@int-evry.fr>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] dma_sync_sg_for_cpu is a no-op except for non-coherent R10000s.
Ralf Baechle [Fri, 2 Mar 2007 11:42:11 +0000 (11:42 +0000)]
[MIPS] dma_sync_sg_for_cpu is a no-op except for non-coherent R10000s.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] Cobalt: update reserved resources
Yoichi Yuasa [Thu, 1 Mar 2007 13:50:25 +0000 (22:50 +0900)]
[MIPS] Cobalt: update reserved resources

This patch has removed unused timer resource.
Moreover, the name of reserved resources ware changed.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] SN: PCI fixup needs to include <irq.h>.
Ralf Baechle [Thu, 1 Mar 2007 15:35:54 +0000 (15:35 +0000)]
[MIPS] SN: PCI fixup needs to include <irq.h>.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] DMA: Fix a bunch of warnings due to missing inline keywords.
Ralf Baechle [Thu, 1 Mar 2007 15:30:01 +0000 (15:30 +0000)]
[MIPS] DMA: Fix a bunch of warnings due to missing inline keywords.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] RM: It should be #ifdef CONFIG_FOO not #if CONFIG_FOO ...
Ralf Baechle [Thu, 1 Mar 2007 15:29:25 +0000 (15:29 +0000)]
[MIPS] RM: It should be #ifdef CONFIG_FOO not #if CONFIG_FOO ...

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] Fix and cleanup the mess that a dozen prom_printf variants are.
Ralf Baechle [Thu, 1 Mar 2007 11:56:43 +0000 (11:56 +0000)]
[MIPS] Fix and cleanup the mess that a dozen prom_printf variants are.

early_printk is a so much saner thing.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] DEC: Remove redeclarations of mips_machgroup and mips_machtype.
Ralf Baechle [Thu, 1 Mar 2007 10:47:23 +0000 (10:47 +0000)]
[MIPS] DEC: Remove redeclarations of mips_machgroup and mips_machtype.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] No need to write c0_compare in plat_timer_setup
Atsushi Nemoto [Wed, 28 Feb 2007 16:53:13 +0000 (01:53 +0900)]
[MIPS] No need to write c0_compare in plat_timer_setup

If R4k counter was used for hpt_timer and interrupt source,
c0_hpt_timer_init() initializes the c0_compare register.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] Convert to RTC-class ds1742 driver
Atsushi Nemoto [Wed, 28 Feb 2007 15:40:21 +0000 (00:40 +0900)]
[MIPS] Convert to RTC-class ds1742 driver

The generic rtc-ds1742 driver can be used for RBTX4927 and JMR3927
(with __swizzle_addr trick).  This patch also removes MIPS local
DS1742 stuff.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] Oprofile: Add missing break statements.
Ralf Baechle [Wed, 28 Feb 2007 15:34:22 +0000 (15:34 +0000)]
[MIPS] Oprofile: Add missing break statements.

This was causing oprofile to fail on R10000, R12000, R14000.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] jmr3927: build fix
Atsushi Nemoto [Tue, 27 Feb 2007 16:42:19 +0000 (01:42 +0900)]
[MIPS] jmr3927: build fix

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] SNI: Fix mc146818_decode_year
Thomas Bogendoerfer [Sat, 3 Feb 2007 13:06:10 +0000 (14:06 +0100)]
[MIPS] SNI: Fix mc146818_decode_year

Big endian RMs uses a different mc146818_decode_year than little endian RMs
Correct mc146818_decode_year for years before 2000

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] Replace sys32_timer_create with the generic compat_sys_timer_create.
Ralf Baechle [Tue, 27 Feb 2007 01:21:17 +0000 (01:21 +0000)]
[MIPS] Replace sys32_timer_create with the generic compat_sys_timer_create.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] Replace sys32_socketcall with the generic compat_sys_socketcall.
Ralf Baechle [Tue, 27 Feb 2007 01:11:28 +0000 (01:11 +0000)]
[MIPS] Replace sys32_socketcall with the generic compat_sys_socketcall.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] N32 waitid is the same as o32.
Ralf Baechle [Tue, 27 Feb 2007 00:56:37 +0000 (00:56 +0000)]
[MIPS] N32 waitid is the same as o32.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years agoKVM: Move kvmfs magic number to <linux/magic.h>
Andrew Morton [Thu, 1 Mar 2007 09:28:13 +0000 (11:28 +0200)]
KVM: Move kvmfs magic number to <linux/magic.h>

Use the standard magic.h for kvmfs.

Cc: Avi Kivity <avi@qumranet.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: Fix bogus failure in kvm.ko module initialization
Avi Kivity [Mon, 26 Feb 2007 14:29:43 +0000 (16:29 +0200)]
KVM: Fix bogus failure in kvm.ko module initialization

A bogus 'return r' can cause an otherwise successful module load to fail.
This both denies users the use of kvm, and it also denies them the use of
their machine, as it leaves a filesystem registered with its callbacks
pointing into now-freed module memory.

Fix by returning a zero like a good module.

Thanks to Richard Lucassen <mailinglists@lucassen.org> (?) for reporting
the problem and for providing access to a machine which exhibited it.

Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: Remove write access permissions when dirty-page-logging is enabled
Uri Lublin [Thu, 22 Feb 2007 15:37:32 +0000 (17:37 +0200)]
KVM: Remove write access permissions when dirty-page-logging is enabled

Enabling dirty page logging is done using KVM_SET_MEMORY_REGION ioctl.
If the memory region already exists, we need to remove write accesses,
so writes will be caught, and dirty pages will be logged.

Signed-off-by: Uri Lublin <uril@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agokvm: move do_remove_write_access() up
Uri Lublin [Thu, 22 Feb 2007 15:15:33 +0000 (17:15 +0200)]
kvm: move do_remove_write_access() up

To be called from kvm_vm_ioctl_set_memory_region()

Signed-off-by: Uri Lublin <uril@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: Fix dirty page log bitmap size/access calculation
Uri Lublin [Thu, 22 Feb 2007 14:43:09 +0000 (16:43 +0200)]
KVM: Fix dirty page log bitmap size/access calculation

Since dirty_bitmap is an unsigned long array, the alignment and size need
to take that into account.

Signed-off-by: Uri Lublin <uril@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: Add missing calls to mark_page_dirty()
Uri Lublin [Wed, 21 Feb 2007 16:25:21 +0000 (18:25 +0200)]
KVM: Add missing calls to mark_page_dirty()

A few places where we modify guest memory fail to call mark_page_dirty(),
causing live migration to fail.  This adds the missing calls.

Signed-off-by: Uri Lublin <uril@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: Bump API version
Avi Kivity [Wed, 21 Feb 2007 17:47:40 +0000 (19:47 +0200)]
KVM: Bump API version

Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: Per-vcpu inodes
Avi Kivity [Wed, 21 Feb 2007 16:04:26 +0000 (18:04 +0200)]
KVM: Per-vcpu inodes

Allocate a distinct inode for every vcpu in a VM.  This has the following
benefits:

 - the filp cachelines are no longer bounced when f_count is incremented on
   every ioctl()
 - the API and internal code are distinctly clearer; for example, on the
   KVM_GET_REGS ioctl, there is no need to copy the vcpu number from
   userspace and then copy the registers back; the vcpu identity is derived
   from the fd used to make the call

Right now the performance benefits are completely theoretical since (a) we
don't support more than one vcpu per VM and (b) virtualization hardware
inefficiencies completely everwhelm any cacheline bouncing effects.  But
both of these will change, and we need to prepare the API today.

Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: Move kvm_vm_ioctl_create_vcpu() around
Avi Kivity [Tue, 20 Feb 2007 16:41:05 +0000 (18:41 +0200)]
KVM: Move kvm_vm_ioctl_create_vcpu() around

In preparation of some hacking.

Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: Rename some kvm_dev_ioctl_*() functions to kvm_vm_ioctl_*()
Avi Kivity [Tue, 20 Feb 2007 16:27:58 +0000 (18:27 +0200)]
KVM: Rename some kvm_dev_ioctl_*() functions to kvm_vm_ioctl_*()

This reflects the changed scope, from device-wide to single vm (previously
every device open created a virtual machine).

Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: Create an inode per virtual machine
Avi Kivity [Wed, 21 Feb 2007 17:28:04 +0000 (19:28 +0200)]
KVM: Create an inode per virtual machine

This avoids having filp->f_op and the corresponding inode->i_fop different,
which is a little unorthodox.

The ioctl list is split into two: global kvm ioctls and per-vm ioctls.  A new
ioctl, KVM_CREATE_VM, is used to create VMs and return the VM fd.

Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: Add internal filesystem for generating inodes
Avi Kivity [Tue, 20 Feb 2007 12:07:37 +0000 (14:07 +0200)]
KVM: Add internal filesystem for generating inodes

The kvmfs inodes will represent virtual machines and vcpus, as necessary,
reducing cacheline bouncing due to inodes and filps being shared.

Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: More 0 -> NULL conversions
Avi Kivity [Mon, 19 Feb 2007 12:37:48 +0000 (14:37 +0200)]
KVM: More 0 -> NULL conversions

Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: SVM: intercept SMI to handle it at host level
Joerg Roedel [Mon, 19 Feb 2007 12:37:47 +0000 (14:37 +0200)]
KVM: SVM: intercept SMI to handle it at host level

This patch changes the SVM code to intercept SMIs and handle it
outside the guest.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: svm: init cr0 with the wp bit set
Avi Kivity [Mon, 19 Feb 2007 12:37:47 +0000 (14:37 +0200)]
KVM: svm: init cr0 with the wp bit set

Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: Wire up hypercall handlers to a central arch-independent location
Avi Kivity [Mon, 19 Feb 2007 12:37:47 +0000 (14:37 +0200)]
KVM: Wire up hypercall handlers to a central arch-independent location

Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: Add hypercall host support for svm
Avi Kivity [Mon, 19 Feb 2007 12:37:47 +0000 (14:37 +0200)]
KVM: Add hypercall host support for svm

Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: Add host hypercall support for vmx
Ingo Molnar [Mon, 19 Feb 2007 12:37:47 +0000 (14:37 +0200)]
KVM: Add host hypercall support for vmx

Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: add MSR based hypercall API
Ingo Molnar [Mon, 19 Feb 2007 12:37:47 +0000 (14:37 +0200)]
KVM: add MSR based hypercall API

This adds a special MSR based hypercall API to KVM. This is to be
used by paravirtual kernels and virtual drivers.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: Use page_private()/set_page_private() apis
Markus Rechberger [Mon, 19 Feb 2007 12:37:47 +0000 (14:37 +0200)]
KVM: Use page_private()/set_page_private() apis

Besides using an established api, this allows using kvm in older kernels.

Signed-off-by: Markus Rechberger <markus.rechberger@amd.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: Use ARRAY_SIZE macro instead of manual calculation.
Ahmed S. Darwish [Mon, 19 Feb 2007 12:37:46 +0000 (14:37 +0200)]
KVM: Use ARRAY_SIZE macro instead of manual calculation.

Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com>
Signed-off-by: Dor Laor <dor.laor@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: vmx: hack set_cr0_no_modeswitch() to actually do modeswitch
Joerg Roedel [Mon, 19 Feb 2007 12:37:46 +0000 (14:37 +0200)]
KVM: vmx: hack set_cr0_no_modeswitch() to actually do modeswitch

The whole thing is rotten, but this allows vmx to boot with the guest reboot
fix.

Signed-off-by: Markus Rechberger <markus.rechberger@amd.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: Cosmetics
Avi Kivity [Mon, 19 Feb 2007 12:37:46 +0000 (14:37 +0200)]
KVM: Cosmetics

Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: Move virtualization deactivation from CPU_DEAD state to CPU_DOWN_PREPARE
Jeremy Katz [Mon, 19 Feb 2007 12:37:46 +0000 (14:37 +0200)]
KVM: Move virtualization deactivation from CPU_DEAD state to CPU_DOWN_PREPARE

This gives it more chances of surviving suspend.

Signed-off-by: Jeremy Katz <katzj@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoKVM: mmu: add missing dirty page tracking cases
Avi Kivity [Mon, 19 Feb 2007 12:37:46 +0000 (14:37 +0200)]
KVM: mmu: add missing dirty page tracking cases

We fail to mark a page dirty in three cases:

- setting the accessed bit in a pte
- setting the dirty bit in a pte
- emulating a write into a pagetable

This fix adds the missing cases.

Signed-off-by: Avi Kivity <avi@qumranet.com>
17 years agoMerge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik...
Linus Torvalds [Sat, 3 Mar 2007 01:58:52 +0000 (17:58 -0800)]
Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev

* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  libata: add CONFIG_PM to libata core layer
  libata: add missing CONFIG_PM in LLDs
  libata: add missing PM callbacks
  pata_qdi: Fix initialisation
  [libata] pata_cmd64x: fix driver description in comments
  [libata] pata_{legacy,sc1200,sl82c105}: add missing hooks
  [libata] change master/slave IDENTIFY order
  libata-core: Fix simplex handling

17 years ago[netdrvr] tulip, de2104x: fix typo: s/__sparc_/__sparc__/
Jeff Garzik [Sat, 3 Mar 2007 01:21:56 +0000 (20:21 -0500)]
[netdrvr] tulip, de2104x: fix typo: s/__sparc_/__sparc__/

Noticed by Doug Nazar (via David Miller).

Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agomv643xx_eth: move mac_addr inside mv643xx_eth_platform_data
Dale Farnsworth [Thu, 1 Mar 2007 23:31:48 +0000 (16:31 -0700)]
mv643xx_eth: move mac_addr inside mv643xx_eth_platform_data

The information contained within platform_data should be self-contained.
Replace the pointer to a MAC address with the actual MAC address in
struct mv643xx_eth_platform_data.

Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agoFix mv643xx_eth compilation.
Dave Jones [Wed, 28 Feb 2007 20:41:39 +0000 (15:41 -0500)]
Fix mv643xx_eth compilation.

Commit 908b637fe793165b6aecdc875cdca67c4959a1ad removed ETH_DMA_ALIGN
but missed a usage of it in a macro, which broke the build.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agoqla3xxx: bugfix for line omitted in previous patch.
Ron Mercer [Thu, 1 Mar 2007 00:42:17 +0000 (16:42 -0800)]
qla3xxx: bugfix for line omitted in previous patch.

This missing line caused transmit errors on the Qlogic 4032 chip.

Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agoNetXen: Fix second rmmod failure observed on PowerPC machines.
Linsys Contractor Mithlesh Thukral [Wed, 28 Feb 2007 13:16:40 +0000 (05:16 -0800)]
NetXen: Fix second rmmod failure observed on PowerPC machines.

Signed-off by: Mithlesh Thukral <mithlesh@netxen.com>

Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agoNetXen: Updates, removal of unsupported features and minor bug fixes.
Linsys Contractor Mithlesh Thukral [Wed, 28 Feb 2007 13:14:07 +0000 (05:14 -0800)]
NetXen: Updates, removal of unsupported features and minor bug fixes.

Signed-off-by: Mithlesh Thukral <mithlesh@netxen.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agocxgb3 - Tag driver version
Divy Le Ray [Wed, 28 Feb 2007 03:28:14 +0000 (19:28 -0800)]
cxgb3 - Tag driver version

This patch adds a "-ko" tag to the driver version.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agomyri10ge: fix copyright and license
Brice Goglin [Tue, 27 Feb 2007 16:18:40 +0000 (17:18 +0100)]
myri10ge: fix copyright and license

Fix copyright and license ("regents" should not have ever been used).

Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agojmr3927: do not call tc35815_killall().
Ralf Baechle [Tue, 27 Feb 2007 18:15:01 +0000 (18:15 +0000)]
jmr3927: do not call tc35815_killall().

No need to stop tc35815 before resetting the board.  This fixes the
build of tc35815 as a module.  This also means there is no caller of
tc35815_killall left, so remove that function also.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agoMerge branch 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/linvil...
Jeff Garzik [Sat, 3 Mar 2007 00:40:24 +0000 (19:40 -0500)]
Merge branch 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 into upstream-fixes

17 years agolibata: add CONFIG_PM to libata core layer
Tejun Heo [Fri, 2 Mar 2007 08:32:47 +0000 (17:32 +0900)]
libata: add CONFIG_PM to libata core layer

Conditionalize all PM related stuff in libata core layer using
CONFIG_PM.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata: add missing CONFIG_PM in LLDs
Tejun Heo [Fri, 2 Mar 2007 08:31:26 +0000 (17:31 +0900)]
libata: add missing CONFIG_PM in LLDs

Add missing #ifdef CONFIG_PM conditionals around all PM related parts
in libata LLDs.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata: add missing PM callbacks
Tejun Heo [Fri, 2 Mar 2007 08:30:01 +0000 (17:30 +0900)]
libata: add missing PM callbacks

Some LLDs were missing scsi device PM callbacks while having host/port
suspend support.  Add missing ones.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years ago[AOE]: Add get_unaligned() calls where needed.
David S. Miller [Fri, 2 Mar 2007 02:30:08 +0000 (18:30 -0800)]
[AOE]: Add get_unaligned() calls where needed.

Based upon a report by Andrew Walrond.

Signed-off-by: David S. Miller <davem@davemloft.net>
17 years ago[RADEON]: Fix blanking return value.
David S. Miller [Fri, 2 Mar 2007 02:29:14 +0000 (18:29 -0800)]
[RADEON]: Fix blanking return value.

If you'll recall, over a year ago, I pointed out that the current
Radeon driver erroneously returns -EINVAL for valid blanking codes,
here is a link to that thread:

http://lkml.org/lkml/2006/1/28/6

No other driver does this, and it confuses the X server into thinking
that the device does not support blanking properly.

I looked again and there is simply no reason for the Radeon driver to
return -EINVAL for FB_BLANK_NORMAL.  It claims it wants to do this in
order to convince fbcon to blank in software, right here:

if (fb_blank(info, blank))
fbcon_generic_blank(vc, info, blank);

to software blank the screen.  But it only causes that to happen
in the FB_BLANK_NORMAL case.

That makes no sense because the Radeon code does this:

val |= CRTC_DISPLAY_DIS;

in the FB_BLANK_NORMAL case so should be blanking the hardware, and
there is therefore no reason to SW blank by returning -EINVAL.

Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Antonino Daplas <adaplas@gmail.com>
17 years ago[SPARC]: Provide 'get_property()' alias for of_get_property().
David S. Miller [Fri, 2 Mar 2007 02:10:25 +0000 (18:10 -0800)]
[SPARC]: Provide 'get_property()' alias for of_get_property().

Another powerpc compatibility item, this will allow us to share
more code with them.

Signed-off-by: David S. Miller <davem@davemloft.net>
17 years ago[SPARC]: Provide pci_device_to_OF_node() just like powerpc.
David S. Miller [Fri, 2 Mar 2007 02:09:18 +0000 (18:09 -0800)]
[SPARC]: Provide pci_device_to_OF_node() just like powerpc.

Signed-off-by: David S. Miller <davem@davemloft.net>
17 years ago[SPARC]: Handle unresolvable resources better in of_device.c
David S. Miller [Fri, 2 Mar 2007 02:08:05 +0000 (18:08 -0800)]
[SPARC]: Handle unresolvable resources better in of_device.c

Just leave them as zero if we couldn't calculate it.

Signed-off-by: David S. Miller <davem@davemloft.net>
17 years ago[SPARC]: Fix bus handling in build_device_resources().
David S. Miller [Thu, 1 Mar 2007 07:20:12 +0000 (23:20 -0800)]
[SPARC]: Fix bus handling in build_device_resources().

We mistakedly modify 'bus' in the innermost loop.  What
should happen is that at each register index iteration,
we start with the same 'bus'.

So preserve it's value at the top level, and use a loop
local variable 'dbus' for iteration.

This bug causes registers other than the first to be
decoded improperly.

Signed-off-by: David S. Miller <davem@davemloft.net>
17 years agopata_qdi: Fix initialisation
Alan Cox [Fri, 2 Mar 2007 14:56:35 +0000 (14:56 +0000)]
pata_qdi: Fix initialisation

The QDI init code contains some bugs which mean it only works if you have
a test setup that causes both a successful and failed probe. Fix this

Found by Philip Guo

(Who found it working on code analysis tools not running VLB IDE
controllers)

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years ago[libata] pata_cmd64x: fix driver description in comments
Jeff Garzik [Fri, 2 Mar 2007 23:17:22 +0000 (18:17 -0500)]
[libata] pata_cmd64x: fix driver description in comments

Trivial comment fix, taken out of a larger Alan Cox patch.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years ago[libata] pata_{legacy,sc1200,sl82c105}: add missing hooks
Jeff Garzik [Fri, 2 Mar 2007 23:09:05 +0000 (18:09 -0500)]
[libata] pata_{legacy,sc1200,sl82c105}: add missing hooks

Alan Cox noticed several hooks in pata_* drivers were missing, when
he authored his ->cable_detect hook patches.  This patch extracts
just those fixes from Alan's patches, adding the necessary hooks
(usually ->freeze, ->thaw, and ->post_internal_cmd) to the drivers.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years ago[libata] change master/slave IDENTIFY order
Jeff Garzik [Fri, 2 Mar 2007 22:47:28 +0000 (17:47 -0500)]
[libata] change master/slave IDENTIFY order

2.6.21-rc has horrible problems with libata and PATA cable types (and
thus speeds). This occurs because Tejun fixed a pile of other bugs and
we now do cable detect enforcement for drive side detection properly.

Unfortunately we don't do the process around cable detection right. Tejun
identified the problem and pointed to the right Annex in the spec, this patch
implements the needed changes.

The basic requirement is that we have to identify the slave before the
master.

The patch switches the identify order so that we can do the drive side
detection correctly.

[NOTE: patch and description extracted from a larger work written
and signed-off-by Alan Cox]

Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata-core: Fix simplex handling
Alan [Thu, 1 Mar 2007 17:36:46 +0000 (17:36 +0000)]
libata-core: Fix simplex handling

The initial simplex handling code is fooled if you suspend and resume.
This also causes problems with some single channel controllers which
claim to be simplex.

The fix is fairly simple, instead of keeping a flag to remember if we
gave away the simplex channel we remember the actual owner. As the owner
is always part of the host_set we don't even need a refcount.

Knowing the owner also means we can reassign simplex DMA channels in
future hotplug code etc if we need to

Signed-off-by: Alan Cox <alan@redhat.com>
(and a signed-off for the patch I sent before while I remember)
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agoMerge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik...
Linus Torvalds [Fri, 2 Mar 2007 03:48:21 +0000 (19:48 -0800)]
Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev

* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  ahci: improve spurious SDB FIS handling
  ahci/pata_jmicron: match class not function number
  jmicron ATA: reimplement jmicron ATA quirk
  pata_jmicron: drop unnecessary device programming in [re]init
  libata: blacklist FUJITSU MHT2060BH for NCQ
  sata_sil24: kill unused local variable idx in sil24_fill_sg()
  libata: clear drvdata in ata_host_release(), take#2

17 years agoMerge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jikos/hid
Linus Torvalds [Fri, 2 Mar 2007 01:30:51 +0000 (17:30 -0800)]
Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jikos/hid

* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jikos/hid:
  HID: fix Logitech DiNovo Edge touchwheel and Logic3 /SpectraVideo middle button
  HID: add git tree information to MAINTAINERS
  HID: fix broken Logitech S510 keyboard report descriptor; make extra keys work
  HID: fix possible double-free on error path in hid parser
  HID: hid-debug.c should #include <linux/hid-debug.h>
  HID: fix bug in zeroing the last field byte in output reports
  USB HID: use CONFIG_HID_DEBUG for outputting report descriptor
  USB HID: Fix USB vendor and product IDs endianness for USB HID devices

17 years agoMerge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
Linus Torvalds [Fri, 2 Mar 2007 01:28:31 +0000 (17:28 -0800)]
Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC64]: Fix parport_pc build.
  [SPARC64]: Update defconfig.

17 years agoMerge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Fri, 2 Mar 2007 01:27:01 +0000 (17:27 -0800)]
Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
  [TCP]: Fix minisock tcp_create_openreq_child() typo.
  [TCP]: Document several sysctls.
  [NET]: Fix kfree(skb)
  [NET]: Handle disabled preemption in gfp_any()
  [BRIDGE]: Fix locking of set path cost.
  [IPV6]: /proc/net/anycast6 unbalanced inet6_dev refcnt
  [IPX]: Remove ancient changelog
  [IPX]: Remove outdated information from Kconfig
  [NET]: Revert socket.h/stat.h ifdef hacks.
  [IPV6]: anycast refcnt fix
  [XFRM] xfrm_user: Fix return values of xfrm_add_sa_expire.

17 years agoMerge master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb
Linus Torvalds [Fri, 2 Mar 2007 01:25:23 +0000 (17:25 -0800)]
Merge master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb

* master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb:
  V4L/DVB (5305): Mark VIDIOC_DBG_S/G_REGISTER as experimental
  V4L/DVB (5271): Add VIDIOC_TRY_ENCODER_CMD and VIDIOC_ENCODER_CMD ioctls.
  V4L/DVB (5270): Add VIDIOC_G_ENC_INDEX ioctl
  V4L/DVB (5276): Cxusb: fix firmware patch for big endian systems
  V4L/DVB (5258): Cafe_ccic: fix compiler warning
  V4L/DVB (5295): Digitv: open nxt6000 i2c_gate for TDED4 tuner handling
  V4L/DVB (5304): Improve chip matching in v4l2_register
  V4L/DVB (5255): Fix cx25840 firmware loading.

17 years ago[PATCH] Fix sysfs build breakage if !CONFIG_SYSFS
Ralf Baechle [Thu, 1 Mar 2007 12:40:21 +0000 (12:40 +0000)]
[PATCH] Fix sysfs build breakage if !CONFIG_SYSFS

B0rkage introduced by dfa87c824a9a5430008acd1ed2e8111ed164fcbe.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoahci: improve spurious SDB FIS handling
Tejun Heo [Tue, 27 Feb 2007 04:24:19 +0000 (13:24 +0900)]
ahci: improve spurious SDB FIS handling

Spurious SDB FIS during NCQ might not contain spurious completions.
It could be spurious TF update or invalid async notification.  Treat
as HSM violation iff a spurious SDB FIS contains spurious completions;
otherwise, just whine once about it.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agoahci/pata_jmicron: match class not function number
Tejun Heo [Mon, 26 Feb 2007 11:24:03 +0000 (20:24 +0900)]
ahci/pata_jmicron: match class not function number

Make jmiron_ata quirk update pdev->class after programming the device
and update ahci and pata_jmicron such that they match class code
instead of checking function number manually.  For ahci, it matches
for vendor and class.  For pata_jmicron, it matches vendor, device and
class as IDE class isn't as well defined as AHCI class.

This makes jmicron device matching more conventional and script
friendly.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agojmicron ATA: reimplement jmicron ATA quirk
Tejun Heo [Mon, 26 Feb 2007 11:16:13 +0000 (20:16 +0900)]
jmicron ATA: reimplement jmicron ATA quirk

Reimplement jmicron ATA quirk.

* renamed to quirk_jmicron_ata()
* quirk is invoked only for the affected controllers
* programming is stricter.  e.g. conf5 bit24 is cleared if
  unnecessary.
* code factored for readability
* JMB360 and JMB368 are programmed into proper mode

Verified on JMB360, 363 and 368.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agopata_jmicron: drop unnecessary device programming in [re]init
Tejun Heo [Mon, 26 Feb 2007 11:09:02 +0000 (20:09 +0900)]
pata_jmicron: drop unnecessary device programming in [re]init

Channel redirect and AHCI mode enable programmings are done via PCI
quirk for both probe and resume paths.  Drop duplicate and possibly
unsafe device programming from pata_jmicron().

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years ago[PATCH] Fix get_unmapped_area and fsync for hugetlb shm segments
Adam Litke [Thu, 1 Mar 2007 23:46:08 +0000 (15:46 -0800)]
[PATCH] Fix get_unmapped_area and fsync for hugetlb shm segments

This patch provides the following hugetlb-related fixes to the recent stacked
shm files changes:
 - Update is_file_hugepages() so it will reconize hugetlb shm segments.
 - get_unmapped_area must be called with the nested file struct to handle
   the sfd->file->f_ops->get_unmapped_area == NULL case.
 - The fsync f_op must be wrapped since it is specified in the hugetlbfs
   f_ops.

This is based on proposed fixes from Eric Biederman that were debugged and
tested by me.  Without it, attempting to use hugetlb shared memory segments
on powerpc (and likely ia64) will kill your box.

Signed-off-by: Adam Litke <agl@us.ibm.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Acked-by: William Irwin <bill.irwin@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agolibata: blacklist FUJITSU MHT2060BH for NCQ
Tejun Heo [Wed, 28 Feb 2007 06:21:23 +0000 (15:21 +0900)]
libata: blacklist FUJITSU MHT2060BH for NCQ

Blacklist FUJITSU MHT2060BH for NCQ.  On this drive, NCQ works iff
queue depth is equal to or less than 4.  Just turn it off.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Mike Accetta <maccetta@laurelnetworks.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agosata_sil24: kill unused local variable idx in sil24_fill_sg()
Tejun Heo [Mon, 26 Feb 2007 07:11:00 +0000 (16:11 +0900)]
sata_sil24: kill unused local variable idx in sil24_fill_sg()

Kill unused local variable idx in sil24_fill_sg().

Spotted by Jeff Garzik.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata: clear drvdata in ata_host_release(), take#2
Tejun Heo [Tue, 27 Feb 2007 13:33:21 +0000 (22:33 +0900)]
libata: clear drvdata in ata_host_release(), take#2

Clearing drvdata in ->remove_one causes NULL pointer deference.  Clear
drvdata only in ata_host_release() after all resources are freed.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years ago[PATCH] VM: invalidate_inode_pages2_range() should not exit early
Trond Myklebust [Thu, 1 Mar 2007 04:13:55 +0000 (20:13 -0800)]
[PATCH] VM: invalidate_inode_pages2_range() should not exit early

Fix invalidate_inode_pages2_range() so that it does not immediately exit
just because a single page in the specified range could not be removed.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] tty_io: fix race in master pty close/slave pty close path
Aristeu Sergio Rozanski Filho [Thu, 1 Mar 2007 04:13:53 +0000 (20:13 -0800)]
[PATCH] tty_io: fix race in master pty close/slave pty close path

This patch fixes a possible race that leads to double freeing an idr index.
 When the master begin to close, release_dev() is called and then
pty_close() is called:

        if (tty->driver->close)
                tty->driver->close(tty, filp);

This is done without helding any locks other than BKL.  Inside pty_close(),
being a master close, the devpts entry will be removed:

#ifdef CONFIG_UNIX98_PTYS
                if (tty->driver == ptm_driver)
                        devpts_pty_kill(tty->index);
#endif

But devpts_pty_kill() will call get_node() that may sleep while waiting for
&devpts_root->d_inode->i_sem.  When this happens and the slave is being
opened, tty_open() just found the driver and index:

        driver = get_tty_driver(device, &index);
        if (!driver) {
                mutex_unlock(&tty_mutex);
                return -ENODEV;
        }

This part of the code is already protected under tty_mute.  The problem is
that the slave close already got an index.  Then init_dev() is called and
blocks waiting for the same &devpts_root->d_inode->i_sem.

When the master close resumes, it removes the devpts entry, and the
relation between idr index and the tty is gone.  The master then sleeps
waiting for the tty_mutex on release_dev().

Slave open resumes and found no tty for that index.  As result, a NULL tty
is returned and init_dev() doesn't flow to fast_track:

        /* check whether we're reopening an existing tty */
        if (driver->flags & TTY_DRIVER_DEVPTS_MEM) {
                tty = devpts_get_tty(idx);
                if (tty && driver->subtype == PTY_TYPE_MASTER)
                        tty = tty->link;
        } else {
                tty = driver->ttys[idx];
        }
        if (tty) goto fast_track;

The result of this, is that a new tty will be created and init_dev() returns
sucessfull. After returning, tty_mutex is dropped and master close may resume.

Master close finds it's the only use and both sides are closing, then releases
the tty and the index. At this point, the idr index is free, but slave still
has it.

Slave open then calls pty_open() and finds that tty->link->count is 0,
because there's no master and returns error.  Then tty_open() calls
release_dev() which executes without any warning, as it was a case of last
slave close when the master is already closed (master->count == 0,
slave->count == 1).  The tty is then released with the already released idr
index.

This normally would only issue a warning on idr_remove() but in case of a
customer's critical application, it's never too simple:

thread1: opens master, gets index X
thread1: begin closing master
thread2: begin opening slave with index X
thread1: finishes closing master, index X released
thread3: opens master, gets index X, just released
thread2: fails opening slave, releases index X         <----
thread4: opens master, gets index X, init_dev() then find an already in use
 and healthy tty and fails

If no more indexes are released, ptmx_open() will keep failing, as the
first free index available is X, and it will make init_dev() fail because
you're trying to "reopen a master" which isn't valid.

The patch notices when this race happens and make init_dev() fail
imediately.  The init_dev() function is called with tty_mutex held, so it's
safe to continue with tty till the end of function because release_dev()
won't make any further changes without grabbing the tty_mutex.

Without the patch, on some machines it's possible get easily idr warnings
like this one:

idr_remove called for id=15 which is not allocated.
 [<c02555b9>] idr_remove+0x139/0x170
 [<c02a1b62>] release_mem+0x182/0x230
 [<c02a28e7>] release_dev+0x4b7/0x700
 [<c02a0ea7>] tty_ldisc_enable+0x27/0x30
 [<c02a1e64>] init_dev+0x254/0x580
 [<c02a0d64>] check_tty_count+0x14/0xb0
 [<c02a4f05>] tty_open+0x1c5/0x340
 [<c02a4d40>] tty_open+0x0/0x340
 [<c017388f>] chrdev_open+0xaf/0x180
 [<c017c2ac>] open_namei+0x8c/0x760
 [<c01737e0>] chrdev_open+0x0/0x180
 [<c0167bc9>] __dentry_open+0xc9/0x210
 [<c0167e2c>] do_filp_open+0x5c/0x70
 [<c0167a91>] get_unused_fd+0x61/0xd0
 [<c0167e93>] do_sys_open+0x53/0x100
 [<c0167f97>] sys_open+0x27/0x30
 [<c010303b>] syscall_call+0x7/0xb

using this test application available on:
 http://www.ruivo.org/~aris/pty_sodomizer.c

Signed-off-by: Aristeu Sergio Rozanski Filho <aris@ruivo.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] fix memory leak in dma_declare_coherent_memory()
Yoichi Yuasa [Thu, 1 Mar 2007 04:13:51 +0000 (20:13 -0800)]
[PATCH] fix memory leak in dma_declare_coherent_memory()

When it goes to free1_out, dev->dma_mem has not been freed.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] Fix buffer overflow and races in capi debug functions
Karsten Keil [Thu, 1 Mar 2007 04:13:50 +0000 (20:13 -0800)]
[PATCH] Fix buffer overflow and races in capi debug functions

The CAPI trace debug functions were using a fixed size buffer, which can be
overflowed if wrong formatted CAPI messages were sent to the kernel capi
layer.  The code was also not protected against multiple callers.  This fix
bug 8028.

Additionally the patch make the CAPI trace functions optional.

Signed-off-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] adapt page_lock_anon_vma() to PREEMPT_RCU
Oleg Nesterov [Thu, 1 Mar 2007 04:13:49 +0000 (20:13 -0800)]
[PATCH] adapt page_lock_anon_vma() to PREEMPT_RCU

page_lock_anon_vma() uses spin_lock() to block RCU.  This doesn't work with
PREEMPT_RCU, we have to do rcu_read_lock() explicitely.  Otherwise, it is
theoretically possible that slab returns anon_vma's memory to the system
before we do spin_unlock(&anon_vma->lock).

[ Hugh points out that this only matters for PREEMPT_RCU, which isn't merged
  yet, and may never be.  Regardless, this patch is conceptually the
  right thing to do, even if it doesn't matter at this point.  - Linus ]

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Christoph Lameter <clameter@engr.sgi.com>
Acked-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] Documentation: CPU load calculation description
Vassili Karpov [Thu, 1 Mar 2007 04:13:45 +0000 (20:13 -0800)]
[PATCH] Documentation: CPU load calculation description

Describes how/when the information exported to `/proc/stat' is calculated,
and possible problems with this approach.

Signed-off-by: Vassili Karpov <av1474@comtv.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] sched: fix SMT scheduler bug
Ingo Molnar [Thu, 1 Mar 2007 04:13:42 +0000 (20:13 -0800)]
[PATCH] sched: fix SMT scheduler bug

The SMT scheduler incorrectly skips kernel threads even if they are
runnable (but they are preempted by a higher-prio user-space task which got
SMT-delayed by an even higher-priority task running on a sibling CPU).

Fix this for now by only doing the SMT-nice optimization if the
to-be-delayed task is the only runnable task.  (This should cover most of
the real-life cases anyway.)

This bug has been in the SMT scheduler since 2.6.17 or so, but has only
been noticed now by the active check in the dynticks code.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] ps3: introduce CONFIG_PS3_ADVANCED
Geert Uytterhoeven [Thu, 1 Mar 2007 04:13:38 +0000 (20:13 -0800)]
[PATCH] ps3: introduce CONFIG_PS3_ADVANCED

ps3: Introduce CONFIG_PS3_ADVANCED, as suggested by Roman Zippel, and use
it to control questions about PS3 subsystems that may not be obvious for
the casual user.

This gets rid of the following warning on non-powerpc platforms: |
drivers/video/Kconfig:1604:warning: 'select' used by config symbol 'FB_PS3'
refer to undefined symbol 'PS3_PS3AV'

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Acked-by: Geoff Levand <geoffrey.levand@am.sony.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] ext[34]: EA block reference count racing fix
Mingming Cao [Thu, 1 Mar 2007 04:13:35 +0000 (20:13 -0800)]
[PATCH] ext[34]: EA block reference count racing fix

There are race issues around ext[34] xattr block release code.

ext[34]_xattr_release_block() checks the reference count of xattr block
(h_refcount) and frees that xattr block if it is the last one reference it.
 Unlike ext2, the check of this counter is unprotected by any lock.
ext[34]_xattr_release_block() will free the mb_cache entry before freeing
that xattr block.  There is a small window between the check for the re
h_refcount ==1 and the call to mb_cache_entry_free().  During this small
window another inode might find this xattr block from the mbcache and reuse
it, racing a refcount updates.  The xattr block will later be freed by the
first inode without notice other inode is still use it.  Later if that
block is reallocated as a datablock for other file, then more serious
problem might happen.

We need put a lock around places checking the refount as well to avoid
racing issue.  Another place need this kind of protection is in
ext3_xattr_block_set(), where it will modify the xattr block content in-
the-fly if the refcount is 1 (means it's the only inode reference it).

This will also fix another issue: the xattr block may not get freed at all
if no lock is to protect the refcount check at the release time.  It is
possible that the last two inodes could release the shared xattr block at
the same time.  But both of them think they are not the last one so only
decreased the h_refcount without freeing xattr block at all.

We need to call lock_buffer() after ext3_journal_get_write_access() to
avoid deadlock (because the later will call lock_buffer()/unlock_buffer
() as well).

Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Cc: Andreas Gruenbacher <agruen@suse.de>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] uml: pte_mkread fix
Jeff Dike [Thu, 1 Mar 2007 04:13:33 +0000 (20:13 -0800)]
[PATCH] uml: pte_mkread fix

Fix the fact that pte_mkread set _PAGE_RW instead of _PAGE_USER (the logic is
copied from i386 in most place, so it is really as bad as you're thinking).

Thus currently page tables are more permissive than they should.

Such a change may trigger other latent bugs, so be careful with this.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] uml: host VDSO fix
Jeff Dike [Thu, 1 Mar 2007 04:13:31 +0000 (20:13 -0800)]
[PATCH] uml: host VDSO fix

This fixes a problem seen by a number of people running UML on newer host
kernels.  init would hang with an infinite segfault loop.

It turns out that the host kernel was providing a AT_SYSINFO_EHDR of
0xffffe000, which faked UML into believing that the host VDSO page could be
reused.  However, AT_SYSINFO pointed into the middle of the address space, and
was unmapped as a result.  Because UML was providing AT_SYSINFO_EHDR and
AT_SYSINFO to its own processes, these would branch to nowhere when trying to
use the VDSO.

The fix is to also check the location of AT_SYSINFO when deciding whether to
use the host's VDSO.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] uml: enable RAW
Allan Graves [Thu, 1 Mar 2007 04:13:29 +0000 (20:13 -0800)]
[PATCH] uml: enable RAW

Add the RAW device driver options to the UML Kconfig.char file so that you may
use them in UML.

Signed-off-by: Allan Graves<allan.graves@gmail.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] FRV: Missing error defs
David Howells [Thu, 1 Mar 2007 04:13:26 +0000 (20:13 -0800)]
[PATCH] FRV: Missing error defs

linux/irq.h uses EINVAL but does not #include linux/errno.h.  This results in
the compiler spitting out errors on some files.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] throttle_vm_writeout(): don't loop on GFP_NOFS and GFP_NOIO allocations
Andrew Morton [Thu, 1 Mar 2007 04:13:21 +0000 (20:13 -0800)]
[PATCH] throttle_vm_writeout(): don't loop on GFP_NOFS and GFP_NOIO allocations

throttle_vm_writeout() is designed to wait for the dirty levels to subside.
But if the caller holds IO or FS locks, we might be holding up that writeout.

So change it to take a single nap to give other devices a chance to clean some
memory, then return.

Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Pete Zaitcev <zaitcev@redhat.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] ACPI: make bay depend on dock
Kristen Carlson Accardi [Thu, 1 Mar 2007 04:13:17 +0000 (20:13 -0800)]
[PATCH] ACPI: make bay depend on dock

Since the bay driver depends on the dock driver for proper notification,
make this driver depend on the dock driver.

Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Acked-by: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] Bug in MM_RB debugging
David Miller [Thu, 1 Mar 2007 04:13:13 +0000 (20:13 -0800)]
[PATCH] Bug in MM_RB debugging

The code is seemingly trying to make sure that rb_next() brings us to
successive increasing vma entries.

But the two variables, prev and pend, used to perform these checks, are
never advanced.

Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Andrea Arcangeli <andrea@novell.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] uml: add back accidentally removed error
Jeff Dike [Thu, 1 Mar 2007 04:13:11 +0000 (20:13 -0800)]
[PATCH] uml: add back accidentally removed error

In the 2.6.20 hang patch, I accidentally threw out an error message.
This puts it back.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>