]> err.no Git - linux-2.6/log
linux-2.6
16 years agoMerge branch 'machtypes' into orion
Russell King [Mon, 7 Jul 2008 21:21:34 +0000 (22:21 +0100)]
Merge branch 'machtypes' into orion

16 years ago[ARM] mach-types update
Russell King [Thu, 3 Jul 2008 15:11:06 +0000 (16:11 +0100)]
[ARM] mach-types update

Update mach-types.  Remove invalid or incorrect entries.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
16 years ago[ARM] Kirkwood: use chip_delay
Saeed Bishara [Thu, 5 Jun 2008 11:19:30 +0000 (13:19 +0200)]
[ARM] Kirkwood: use chip_delay

Signed-off-by: Saeed Bishara <saeed@marvell.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[MTD] orion_nand: add chip_delay parameter
Saeed Bishara [Mon, 5 May 2008 06:25:52 +0000 (19:25 -1100)]
[MTD] orion_nand: add chip_delay parameter

Some SoCs need a different chip_delay value.

Signed-off-by: Saeed Bishara <saeed@marvell.com>
Acked-by: Jörn Engel <joern@logfs.org>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
16 years ago[ARM] Orion: enable all currently supported boards in defconfig
Imre Kaloz [Wed, 25 Jun 2008 23:39:19 +0000 (01:39 +0200)]
[ARM] Orion: enable all currently supported boards in defconfig

Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Orion: make PCI handling code deal with Cardbus slots
Lennert Buytenhek [Thu, 26 Jun 2008 15:12:50 +0000 (17:12 +0200)]
[ARM] Orion: make PCI handling code deal with Cardbus slots

The Cardbus connector does not have an IDSEL signal, and Cardbus
cards are always the intended target of configuration transactions
on their local PCI bus.  This means that if the Orion's PCI bus
signals are hooked up to a Cardbus slot, the same set of PCI
functions will will appear 31 times, for each of the PCI device
IDs 1-31 (ID 0 is the host bridge).

This patch adds a function to the Orion PCI handling code that board
support code can call to enable Cardbus mode.  When Cardbus mode is
enabled, configuration transactions on the PCI local bus are only
allowed to PCI IDs 0 (host bridge) and 1 (cardbus device).

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Kirkwood: support L2 writeback mode
Saeed Bishara [Mon, 23 Jun 2008 12:05:08 +0000 (01:05 -1100)]
[ARM] Kirkwood: support L2 writeback mode

This patch allows booting Kirkwood with the L2 in writeback mode,
by reading the WT override bit from the L2 config register and
passing that into the Feroceon L2 init routine, instead of assuming
that the WT override bit will always be set

Signed-off-by: Saeed Bishara <saeed@marvell.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Orion: fix for tsx09-common.c compilation problem
Sylver Bruneau [Wed, 25 Jun 2008 21:41:09 +0000 (23:41 +0200)]
[ARM] Orion: fix for tsx09-common.c compilation problem

In some cases, compilation of the tsx09 common file was failing due
to an incomplete list of includes.

Signed-off-by: Sylver Bruneau <sylver.bruneau@googlemail.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Orion: correctly load mv2120 RTC driver
Martin Michlmayr [Sat, 28 Jun 2008 10:56:49 +0000 (12:56 +0200)]
[ARM] Orion: correctly load mv2120 RTC driver

After Jean Delvare's change "i2c: Convert most new-style drivers
to use module aliasing" (3760f736716f74bdc62a4ba5406934338da93eb2),
loading rtc-xxx from platform code fails.  Update mv2120-setup.c so
that the driver is loaded correctly.

Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Orion: initialize UART1 on Kurobox Pro/Linkstation Pro
Sylver Bruneau [Sun, 22 Jun 2008 23:20:05 +0000 (01:20 +0200)]
[ARM] Orion: initialize UART1 on Kurobox Pro/Linkstation Pro

Kurobox Pro/Linkstation Pro devices use a microcontroller connected
to UART1.  As most of the communication with this microcontroller is
done from userland (power button detection, fan speed ...), the setup
file has to make UART1 available from userland.

Signed-off-by: Sylver Bruneau <sylver.bruneau@googlemail.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years agoLinux 2.6.26-rc8 v2.6.26-rc8
Linus Torvalds [Wed, 25 Jun 2008 01:58:20 +0000 (18:58 -0700)]
Linux 2.6.26-rc8

16 years agoMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
Linus Torvalds [Wed, 25 Jun 2008 01:12:33 +0000 (18:12 -0700)]
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] Eliminate NULL test after alloc_bootmem in iosapic_alloc_rte()
  [IA64] Handle count==0 in sn2_ptc_proc_write()
  [IA64] Fix boot failure on ia64/sn2

16 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes
Linus Torvalds [Wed, 25 Jun 2008 01:09:47 +0000 (18:09 -0700)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes:
  [GFS2] fix gfs2 block allocation (cleaned up)
  [GFS2] BUG: unable to handle kernel paging request at ffff81002690e000

16 years agoMerge branch 'kvm-updates-2.6.26' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Wed, 25 Jun 2008 01:09:06 +0000 (18:09 -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:
  KVM: Remove now unused structs from kvm_para.h
  x86: KVM guest: Use the paravirt clocksource structs and functions
  KVM: Make kvm host use the paravirt clocksource structs
  x86: Make xen use the paravirt clocksource structs and functions
  x86: Add structs and functions for paravirt clocksource
  KVM: VMX: Fix host msr corruption with preemption enabled
  KVM: ioapic: fix lost interrupt when changing a device's irq
  KVM: MMU: Fix oops on guest userspace access to guest pagetable
  KVM: MMU: large page update_pte issue with non-PAE 32-bit guests (resend)
  KVM: MMU: Fix rmap_write_protect() hugepage iteration bug
  KVM: close timer injection race window in __vcpu_run
  KVM: Fix race between timer migration and vcpu migration

16 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog
Linus Torvalds [Tue, 24 Jun 2008 18:23:35 +0000 (11:23 -0700)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog

* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
  Revert "[WATCHDOG] hpwdt: Add CFLAGS to get driver working"

16 years agoMerge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Tue, 24 Jun 2008 18:21:47 +0000 (11:21 -0700)]
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  xen: remove support for non-PAE 32-bit

16 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel...
Linus Torvalds [Tue, 24 Jun 2008 18:20:59 +0000 (11:20 -0700)]
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb:
  kgdb: sparse fix
  kgdb: documentation update - remove kgdboe

16 years agoenable bus mastering on i915 at resume time
Jie Luo [Tue, 24 Jun 2008 17:38:31 +0000 (10:38 -0700)]
enable bus mastering on i915 at resume time

On 9xx chips, bus mastering needs to be enabled at resume time for much of the
chip to function.  With this patch, vblank interrupts will work as expected
on resume, along with other chip functions.   Fixes kernel bugzilla #10844.

Signed-off-by: Jie Luo <clotho67@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoKVM: Remove now unused structs from kvm_para.h
Gerd Hoffmann [Tue, 3 Jun 2008 14:17:33 +0000 (16:17 +0200)]
KVM: Remove now unused structs from kvm_para.h

The kvm_* structs are obsoleted by the pvclock_* ones.
Now all users have been switched over and the old structs
can be dropped.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
16 years agox86: KVM guest: Use the paravirt clocksource structs and functions
Gerd Hoffmann [Tue, 3 Jun 2008 14:17:32 +0000 (16:17 +0200)]
x86: KVM guest: Use the paravirt clocksource structs and functions

This patch updates the kvm host code to use the pvclock structs
and functions, thereby making it compatible with Xen.

The patch also fixes an initialization bug: on SMP systems the
per-cpu has two different locations early at boot and after CPU
bringup.  kvmclock must take that in account when registering the
physical address within the host.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
16 years agoKVM: Make kvm host use the paravirt clocksource structs
Gerd Hoffmann [Tue, 3 Jun 2008 14:17:31 +0000 (16:17 +0200)]
KVM: Make kvm host use the paravirt clocksource structs

This patch updates the kvm host code to use the pvclock structs.
It also makes the paravirt clock compatible with Xen.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
16 years agox86: Make xen use the paravirt clocksource structs and functions
Gerd Hoffmann [Tue, 3 Jun 2008 14:17:30 +0000 (16:17 +0200)]
x86: Make xen use the paravirt clocksource structs and functions

This patch updates the xen guest to use the pvclock structs
and helper functions.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
16 years agox86: Add structs and functions for paravirt clocksource
Gerd Hoffmann [Tue, 3 Jun 2008 14:17:29 +0000 (16:17 +0200)]
x86: Add structs and functions for paravirt clocksource

This patch adds structs for the paravirt clocksource ABI
used by both xen and kvm (pvclock-abi.h).

It also adds some helper functions to read system time and
wall clock time from a paravirtual clocksource (pvclock.[ch]).
They are based on the xen code.  They are enabled using
CONFIG_PARAVIRT_CLOCK.

Subsequent patches of this series will put the code in use.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
16 years ago[GFS2] fix gfs2 block allocation (cleaned up)
Benjamin Marzinski [Tue, 24 Jun 2008 17:53:38 +0000 (12:53 -0500)]
[GFS2] fix gfs2 block allocation (cleaned up)

This patch fixes bz 450641.

This patch changes the computation for zero_metapath_length(), which it
renames to metapath_branch_start(). When you are extending the metadata
tree, The indirect blocks that point to the new data block must either
diverge from the existing tree either at the inode, or at the first
indirect block. They can diverge at the first indirect block because the
inode has room for 483 pointers while the indirect blocks have room for
509 pointers, so when the tree is grown, there is some free space in the
first indirect block. What metapath_branch_start() now computes is the
height where the first indirect block for the new data block is located.
It can either be 1 (if the indirect block diverges from the inode) or 2
(if it diverges from the first indirect block).

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
16 years ago[IA64] Eliminate NULL test after alloc_bootmem in iosapic_alloc_rte()
Julia Lawall [Tue, 24 Jun 2008 08:22:05 +0000 (10:22 +0200)]
[IA64] Eliminate NULL test after alloc_bootmem in iosapic_alloc_rte()

As noted by Akinobu Mita alloc_bootmem and related functions never return
NULL and always return a zeroed region of memory.  Thus a NULL test or
memset after calls to these functions is unnecessary.

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Tony Luck <tony.luck@intel.com>
16 years ago[IA64] Handle count==0 in sn2_ptc_proc_write()
Cliff Wickman [Tue, 24 Jun 2008 17:20:06 +0000 (10:20 -0700)]
[IA64] Handle count==0 in sn2_ptc_proc_write()

The fix applied in e0c6d97c65e0784aade7e97b9411f245a6c543e7
"security hole in sn2_ptc_proc_write" didn't take into account
the case where count==0 (which results in a buffer underrun
when adding the trailing '\0').  Thanks to Andi Kleen for
pointing this out.

Signed-off-by: Cliff Wickman <cpw@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
16 years ago[IA64] Fix boot failure on ia64/sn2
Jes Sorensen [Tue, 24 Jun 2008 15:30:09 +0000 (11:30 -0400)]
[IA64] Fix boot failure on ia64/sn2

Call check_sal_cache_flush() after platform_setup() as
check_sal_cache_flush() now relies on being able to call platform
vector code.

Problem was introduced by: 3463a93def55c309f3c0d0a8aaf216be3be42d64
"Update check_sal_cache_flush to use platform_send_ipi()"

Signed-off-by: Jes Sorensen <jes@sgi.com>
Tested-by: Alex Chiang: <achiang@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
16 years agokgdb: sparse fix
Jason Wessel [Tue, 24 Jun 2008 15:52:55 +0000 (10:52 -0500)]
kgdb: sparse fix

- Fix warning reported by sparse
kernel/kgdb.c:1502:6: warning: symbol 'kgdb_console_write' was not declared.
Should it be static?

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
16 years agokgdb: documentation update - remove kgdboe
Jason Wessel [Tue, 24 Jun 2008 15:52:55 +0000 (10:52 -0500)]
kgdb: documentation update - remove kgdboe

kgdboe is not presently included kgdb, and there should be no
references to it.

Also fix the tcp port terminal connection example.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
16 years agoxen: remove support for non-PAE 32-bit
Jeremy Fitzhardinge [Fri, 9 May 2008 11:05:57 +0000 (12:05 +0100)]
xen: remove support for non-PAE 32-bit

Non-PAE operation has been deprecated in Xen for a while, and is
rarely tested or used.  xen-unstable has now officially dropped
non-PAE support.  Since Xen/pvops' non-PAE support has also been
broken for a while, we may as well completely drop it altogether.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years ago[GFS2] BUG: unable to handle kernel paging request at ffff81002690e000
Bob Peterson [Wed, 18 Jun 2008 16:30:40 +0000 (11:30 -0500)]
[GFS2] BUG: unable to handle kernel paging request at ffff81002690e000

This patch fixes bugzilla bug bz448866: gfs2: BUG: unable to
handle kernel paging request at ffff81002690e000.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
16 years agoRevert "[WATCHDOG] hpwdt: Add CFLAGS to get driver working"
Wim Van Sebroeck [Tue, 24 Jun 2008 13:09:26 +0000 (13:09 +0000)]
Revert "[WATCHDOG] hpwdt: Add CFLAGS to get driver working"

After Linus fixed the inline assembly, the CFLAGS option is not
needed anymore.

Signed-off-by: Thomas Mingarelli <Thomas.Mingarelli@hp.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
16 years agoKVM: VMX: Fix host msr corruption with preemption enabled
Avi Kivity [Tue, 24 Jun 2008 08:48:49 +0000 (11:48 +0300)]
KVM: VMX: Fix host msr corruption with preemption enabled

Switching msrs can occur either synchronously as a result of calls to
the msr management functions (usually in response to the guest touching
virtualized msrs), or asynchronously when preempting a kvm thread that has
guest state loaded.  If we're unlucky enough to have the two at the same
time, host msrs are corrupted and the machine goes kaput on the next syscall.

Most easily triggered by Windows Server 2008, as it does a lot of msr
switching during bootup.

Signed-off-by: Avi Kivity <avi@qumranet.com>
16 years agoKVM: ioapic: fix lost interrupt when changing a device's irq
Avi Kivity [Tue, 17 Jun 2008 22:36:36 +0000 (15:36 -0700)]
KVM: ioapic: fix lost interrupt when changing a device's irq

The ioapic acknowledge path translates interrupt vectors to irqs.  It
currently uses a first match algorithm, stopping when it finds the first
redirection table entry containing the vector.  That fails however if the
guest changes the irq to a different line, leaving the old redirection table
entry in place (though masked).  Result is interrupts not making it to the
guest.

Fix by always scanning the entire redirection table.

Signed-off-by: Avi Kivity <avi@qumranet.com>
16 years agoKVM: MMU: Fix oops on guest userspace access to guest pagetable
Avi Kivity [Thu, 12 Jun 2008 13:54:41 +0000 (16:54 +0300)]
KVM: MMU: Fix oops on guest userspace access to guest pagetable

KVM has a heuristic to unshadow guest pagetables when userspace accesses
them, on the assumption that most guests do not allow userspace to access
pagetables directly. Unfortunately, in addition to unshadowing the pagetables,
it also oopses.

This never triggers on ordinary guests since sane OSes will clear the
pagetables before assigning them to userspace, which will trigger the flood
heuristic, unshadowing the pagetables before the first userspace access. One
particular guest, though (Xenner) will run the kernel in userspace, triggering
the oops.  Since the heuristic is incorrect in this case, we can simply
remove it.

Signed-off-by: Avi Kivity <avi@qumranet.com>
16 years agoKVM: MMU: large page update_pte issue with non-PAE 32-bit guests (resend)
Marcelo Tosatti [Wed, 11 Jun 2008 23:32:40 +0000 (20:32 -0300)]
KVM: MMU: large page update_pte issue with non-PAE 32-bit guests (resend)

kvm_mmu_pte_write() does not handle 32-bit non-PAE large page backed
guests properly. It will instantiate two 2MB sptes pointing to the same
physical 2MB page when a guest large pte update is trapped.

Instead of duplicating code to handle this, disallow directory level
updates to happen through kvm_mmu_pte_write(), so the two 2MB sptes
emulating one guest 4MB pte can be correctly created by the page fault
handling path.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
16 years agoKVM: MMU: Fix rmap_write_protect() hugepage iteration bug
Marcelo Tosatti [Sun, 8 Jun 2008 04:48:53 +0000 (01:48 -0300)]
KVM: MMU: Fix rmap_write_protect() hugepage iteration bug

rmap_next() does not work correctly after rmap_remove(), as it expects
the rmap chains not to change during iteration.  Fix (for now) by restarting
iteration from the beginning.

Signed-off-by: Avi Kivity <avi@qumranet.com>
16 years agoKVM: close timer injection race window in __vcpu_run
Marcelo Tosatti [Fri, 6 Jun 2008 19:37:36 +0000 (16:37 -0300)]
KVM: close timer injection race window in __vcpu_run

If a timer fires after kvm_inject_pending_timer_irqs() but before
local_irq_disable() the code will enter guest mode and only inject such
timer interrupt the next time an unrelated event causes an exit.

It would be simpler if the timer->pending irq conversion could be done
with IRQ's disabled, so that the above problem cannot happen.

For now introduce a new vcpu requests bit to cancel guest entry.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
16 years agoKVM: Fix race between timer migration and vcpu migration
Marcelo Tosatti [Fri, 6 Jun 2008 19:37:35 +0000 (16:37 -0300)]
KVM: Fix race between timer migration and vcpu migration

A guest vcpu instance can be scheduled to a different physical CPU
between the test for KVM_REQ_MIGRATE_TIMER and local_irq_disable().

If that happens, the timer will only be migrated to the current pCPU on
the next exit, meaning that guest LAPIC timer event can be delayed until
a host interrupt is triggered.

Fix it by cancelling guest entry if any vcpu request is pending.  This
has the side effect of nicely consolidating vcpu->requests checks.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
16 years agoalpha: fix compile error in arch/alpha/mm/init.c
Thorsten Kranzkowski [Mon, 23 Jun 2008 20:57:22 +0000 (20:57 +0000)]
alpha: fix compile error in arch/alpha/mm/init.c

Commit 9267b4b3880d00dc2dab90f1d817c856939114f7 ("alpha: fix module load
failures on smp (bug #10926)") causes a regression for my ev4
uniprocessor build:

  CC      arch/alpha/mm/init.o
/export/data/repositories/linux-2.6/arch/alpha/mm/init.c:34: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘typeof’
make[2]: *** [arch/alpha/mm/init.o] Error 1
make[1]: *** [arch/alpha/mm] Error 2
make: *** [sub-make] Error 2

This fixes it for me (compile and boot tested):

Signed-off-by: Thorsten Kranzkowski <dl8bcu@dl8bcu.de>
Acked-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoMerge branch 'hotfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6
Linus Torvalds [Mon, 23 Jun 2008 23:25:11 +0000 (16:25 -0700)]
Merge branch 'hotfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6

* 'hotfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
  NFS: nfs_updatepage(): don't mark page as dirty if an error occurred
  NFS: Fix filehandle size comparisons in the mount code
  NFS: Reduce the NFS mount code stack usage.

16 years agoNFS: nfs_updatepage(): don't mark page as dirty if an error occurred
Trond Myklebust [Thu, 5 Jun 2008 20:02:35 +0000 (16:02 -0400)]
NFS: nfs_updatepage(): don't mark page as dirty if an error occurred

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
16 years agoNFS: Fix filehandle size comparisons in the mount code
Trond Myklebust [Thu, 19 Jun 2008 19:21:11 +0000 (15:21 -0400)]
NFS: Fix filehandle size comparisons in the mount code

Fix a sign issue in xdr_decode_fhstatus3()
Fix incorrect comparison in nfs_validate_mount_data()

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
16 years agoNFS: Reduce the NFS mount code stack usage.
Trond Myklebust [Thu, 19 Jun 2008 18:20:11 +0000 (14:20 -0400)]
NFS: Reduce the NFS mount code stack usage.

This appears to fix the Oops reported in
  http://bugzilla.kernel.org/show_bug.cgi?id=10826

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
16 years agoMerge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 23 Jun 2008 19:49:22 +0000 (12:49 -0700)]
Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  futexes: fix fault handling in futex_lock_pi

16 years agoMerge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 23 Jun 2008 19:48:50 +0000 (12:48 -0700)]
Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: refactor wait_for_completion_timeout()
  sched: fix wait_for_completion_timeout() spurious failure under heavy load
  sched: rt: dont stop the period timer when there are tasks wanting to run

16 years agoMerge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 23 Jun 2008 19:48:17 +0000 (12:48 -0700)]
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  xen: don't drop NX bit
  xen: mask unwanted pte bits in __supported_pte_mask
  xen: Use wmb instead of rmb in xen_evtchn_do_upcall().
  x86: fix NULL pointer deref in __switch_to

16 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
Linus Torvalds [Mon, 23 Jun 2008 19:45:49 +0000 (12:45 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB/mthca: Clear ICM pages before handing to FW

16 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Mon, 23 Jun 2008 19:18:06 +0000 (12:18 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: sb - Fix wrong assertions
  ALSA: aw2 - Fix Oops at initialization

16 years agomm: fix race in COW logic
Nick Piggin [Mon, 23 Jun 2008 12:30:30 +0000 (14:30 +0200)]
mm: fix race in COW logic

There is a race in the COW logic.  It contains a shortcut to avoid the
COW and reuse the page if we have the sole reference on the page,
however it is possible to have two racing do_wp_page()ers with one
causing the other to mistakenly believe it is safe to take the shortcut
when it is not.  This could lead to data corruption.

Process 1 and process2 each have a wp pte of the same anon page (ie.
one forked the other).  The page's mapcount is 2.  Then they both
attempt to write to it around the same time...

  proc1 proc2 thr1 proc2 thr2
  CPU0 CPU1 CPU3
  do_wp_page() do_wp_page()
 trylock_page()
  can_share_swap_page()
   load page mapcount (==2)
  reuse = 0
 pte unlock
 copy page to new_page
 pte lock
 page_remove_rmap(page);
   trylock_page()
    can_share_swap_page()
     load page mapcount (==1)
    reuse = 1
   ptep_set_access_flags (allow W)

  write private key into page
read from page
ptep_clear_flush()
set_pte_at(pte of new_page)

Fix this by moving the page_remove_rmap of the old page after the pte
clear and flush.  Potentially the entire branch could be moved down
here, but in order to stay consistent, I won't (should probably move all
the *_mm_counter stuff with one patch).

Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: Hugh Dickins <hugh@veritas.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoFix ZERO_PAGE breakage with vmware
Linus Torvalds [Mon, 23 Jun 2008 18:21:37 +0000 (11:21 -0700)]
Fix ZERO_PAGE breakage with vmware

Commit 89f5b7da2a6bad2e84670422ab8192382a5aeb9f ("Reinstate ZERO_PAGE
optimization in 'get_user_pages()' and fix XIP") broke vmware, as
reported by Jeff Chua:

  "This broke vmware 6.0.4.
   Jun 22 14:53:03.845: vmx| NOT_IMPLEMENTED
   /build/mts/release/bora-93057/bora/vmx/main/vmmonPosix.c:774"

and the reason seems to be that there's an old bug in how we handle do
FOLL_ANON on VM_SHARED areas in get_user_pages(), but since it only
triggered if the whole page table was missing, nobody had apparently hit
it before.

The recent changes to 'follow_page()' made the FOLL_ANON logic trigger
not just for whole missing page tables, but for individual pages as
well, and exposed this problem.

This fixes it by making the test for when FOLL_ANON is used more
careful, and also makes the code easier to read and understand by moving
the logic to a separate inline function.

Reported-and-tested-by: Jeff Chua <jeff.chua.linux@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoremoved unused var real_tty on n_tty_ioctl()
Gustavo Fernando Padovan [Mon, 23 Jun 2008 11:07:06 +0000 (12:07 +0100)]
removed unused var real_tty on n_tty_ioctl()

I noted that the 'struct tty_struct *real_tty' is not used in this
function, so I removed the code about 'real_tty'.

Signed-off-by: Gustavo Fernando Padovan <gustavo@las.ic.unicamp.br>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agotty_driver: Update required method documentation
Alan Cox [Mon, 23 Jun 2008 11:06:52 +0000 (12:06 +0100)]
tty_driver: Update required method documentation

Some of the requirement rules are now more relaxed. Also correct a
contradiction in the previous update

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoIB/mthca: Clear ICM pages before handing to FW
Eli Cohen [Mon, 23 Jun 2008 16:29:58 +0000 (09:29 -0700)]
IB/mthca: Clear ICM pages before handing to FW

Current memfree FW has a bug which in some cases, assumes that ICM
pages passed to it are cleared.  This patch uses __GFP_ZERO to
allocate all ICM pages passed to the FW.  Once firmware with a fix is
released, we can make the workaround conditional on firmware version.

This fixes the bug reported by Arthur Kepner <akepner@sgi.com> here:
http://lists.openfabrics.org/pipermail/general/2008-May/050026.html

Cc: <stable@kernel.org>
Signed-off-by: Eli Cohen <eli@mellanox.co.il>
[ Rewritten to be a one-liner using __GFP_ZERO instead of vmap()ing
  ICM memory and memset()ing it to 0. - Roland ]

Signed-off-by: Roland Dreier <rolandd@cisco.com>
16 years agofutexes: fix fault handling in futex_lock_pi
Thomas Gleixner [Mon, 23 Jun 2008 09:21:58 +0000 (11:21 +0200)]
futexes: fix fault handling in futex_lock_pi

This patch addresses a very sporadic pi-futex related failure in
highly threaded java apps on large SMP systems.

David Holmes reported that the pi_state consistency check in
lookup_pi_state triggered with his test application. This means that
the kernel internal pi_state and the user space futex variable are out
of sync. First we assumed that this is a user space data corruption,
but deeper investigation revieled that the problem happend because the
pi-futex code is not handling a fault in the futex_lock_pi path when
the user space variable needs to be fixed up.

The fault happens when a fork mapped the anon memory which contains
the futex readonly for COW or the page got swapped out exactly between
the unlock of the futex and the return of either the new futex owner
or the task which was the expected owner but failed to acquire the
kernel internal rtmutex. The current futex_lock_pi() code drops out
with an inconsistent in case it faults and returns -EFAULT to user
space. User space has no way to fixup that state.

When we wrote this code we thought that we could not drop the hash
bucket lock at this point to handle the fault.

After analysing the code again it turned out to be wrong because there
are only two tasks involved which might modify the pi_state and the
user space variable:

 - the task which acquired the rtmutex
 - the pending owner of the pi_state which did not get the rtmutex

Both tasks drop into the fixup_pi_state() function before returning to
user space. The first task which acquired the hash bucket lock faults
in the fixup of the user space variable, drops the spinlock and calls
futex_handle_fault() to fault in the page. Now the second task could
acquire the hash bucket lock and tries to fixup the user space
variable as well. It either faults as well or it succeeds because the
first task already faulted the page in.

One caveat is to avoid a double fixup. After returning from the fault
handling we reacquire the hash bucket lock and check whether the
pi_state owner has been modified already.

Reported-by: David Holmes <david.holmes@sun.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: David Holmes <david.holmes@sun.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 kernel/futex.c |   93 ++++++++++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 73 insertions(+), 20 deletions(-)

16 years agoALSA: sb - Fix wrong assertions
Takashi Iwai [Mon, 23 Jun 2008 09:58:06 +0000 (11:58 +0200)]
ALSA: sb - Fix wrong assertions

snd_assert() in save_mixer() and restore_mixer() in sb_mixer.c is
just wrong.  The debug code wasn't tested at all, obviously...

Signed-off-by: Takashi Iwai <tiwai@suse.de>
16 years agoALSA: aw2 - Fix Oops at initialization
Takashi Iwai [Mon, 23 Jun 2008 09:54:05 +0000 (11:54 +0200)]
ALSA: aw2 - Fix Oops at initialization

The irq handler may be called before the proper initialization of hardware.
Call snd_aw2_saa7146_setup() before the irq handler registration.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
16 years agoMerge branch 'linus' into sched/urgent
Ingo Molnar [Mon, 23 Jun 2008 09:00:26 +0000 (11:00 +0200)]
Merge branch 'linus' into sched/urgent

16 years ago[ARM] mv78xx0: add defconfig
Lennert Buytenhek [Sun, 22 Jun 2008 20:45:10 +0000 (22:45 +0200)]
[ARM] mv78xx0: add defconfig

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] add Marvell 78xx0 ARM SoC support
Stanislav Samsonov [Sun, 22 Jun 2008 20:45:10 +0000 (22:45 +0200)]
[ARM] add Marvell 78xx0 ARM SoC support

The Marvell Discovery Duo (MV78xx0) is a family of ARM SoCs featuring
(depending on the model) one or two Feroceon CPU cores with 512K of L2
cache and VFP coprocessors running at (depending on the model) between
800 MHz and 1.2 GHz, and features a DDR2 controller, two PCIe
interfaces that can each run either in x4 or quad x1 mode, three USB
2.0 interfaces, two 3Gb/s SATA II interfaces, a SPI interface, two
TWSI interfaces, a crypto accelerator, IDMA/XOR engines, a SPI
interface, four UARTs, and depending on the model, two or four gigabit
ethernet interfaces.

This patch adds basic support for the platform, and allows booting
on the MV78x00 development board, with functional UARTs, SATA, PCIe,
GigE and USB ports.

Signed-off-by: Stanislav Samsonov <samsonov@marvell.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Orion: PCIe x4/x1 detection support
Lennert Buytenhek [Sun, 22 Jun 2008 20:45:09 +0000 (22:45 +0200)]
[ARM] Orion: PCIe x4/x1 detection support

The Discovery Duo (MV78xx0) has two x4 PCIe ports which can either
be used in x4 mode or in quad x1 mode.  This patch adds an accessor
function to the generic plat-orion PCIe handling code to detect in
which of the two modes we're running (which is determined by strap
pins and/or configured by the bootloader).

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Feroceon: 88fr571-vd support
Lennert Buytenhek [Sun, 22 Jun 2008 20:45:08 +0000 (22:45 +0200)]
[ARM] Feroceon: 88fr571-vd support

Add support for the Feroceon 88fr571-vd CPU core as found in e.g.
the Marvell Discovery Duo family of ARM SoCs.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Kirkwood: add defconfig
Saeed Bishara [Sun, 22 Jun 2008 20:45:07 +0000 (22:45 +0200)]
[ARM] Kirkwood: add defconfig

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] add Marvell Kirkwood (88F6000) SoC support
Saeed Bishara [Sun, 22 Jun 2008 20:45:06 +0000 (22:45 +0200)]
[ARM] add Marvell Kirkwood (88F6000) SoC support

The Marvell Kirkwood (88F6000) is a family of ARM SoCs based on a
Shiva CPU core, and features a DDR2 controller, a x1 PCIe interface,
a USB 2.0 interface, a SPI controller, a crypto accelerator, a TS
interface, and IDMA/XOR engines, and depending on the model, also
features one or two Gigabit Ethernet interfaces, two SATA II
interfaces, one or two TWSI interfaces, one or two UARTs, a
TDM/SLIC interface, a NAND controller, an I2S/SPDIF interface, and
an SDIO interface.

This patch adds supports for the Marvell DB-88F6281-BP Development
Board and the RD-88F6192-NAS and the RD-88F6281 Reference Designs,
enabling support for the PCIe interface, the USB interface, the
ethernet interfaces, the SATA interfaces, the TWSI interfaces, the
UARTs, and the NAND controller.

Signed-off-by: Saeed Bishara <saeed@marvell.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Feroceon: 88fr131 support
Lennert Buytenhek [Sun, 22 Jun 2008 20:45:05 +0000 (22:45 +0200)]
[ARM] Feroceon: 88fr131 support

Add support for the Shiva 88fr131 CPU core as found in e.g. the
Marvell Kirkwood family of ARM SoCs.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Feroceon: L2 cache support
Lennert Buytenhek [Sun, 22 Jun 2008 20:45:04 +0000 (22:45 +0200)]
[ARM] Feroceon: L2 cache support

This patch adds support for the unified Feroceon L2 cache controller
as found in e.g. the Marvell Kirkwood and Marvell Discovery Duo
families of ARM SoCs.

Note that:

- Page table walks are outer uncacheable on Kirkwood and Discovery
  Duo, since the ARMv5 spec provides no way to indicate outer
  cacheability of page table walks (specifying it in TTBR[4:3] is
  an ARMv6+ feature).

  This requires adding L2 cache clean instructions to
  proc-feroceon.S (dcache_clean_area(), set_pte()) as well as to
  tlbflush.h ({flush,clean}_pmd_entry()).  The latter case is handled
  by defining a new TLB type (TLB_FEROCEON) which is almost identical
  to the v4wbi one but provides a TLB_L2CLEAN_FR flag.

- The Feroceon L2 cache controller supports L2 range (i.e. 'clean L2
  range by MVA' and 'invalidate L2 range by MVA') operations, and this
  patch uses those range operations for all Linux outer cache
  operations, as they are faster than the regular per-line operations.

  L2 range operations are not interruptible on this hardware, which
  avoids potential livelock issues, but can be bad for interrupt
  latency, so there is a compile-time tunable (MAX_RANGE_SIZE) which
  allows you to select the maximum range size to operate on at once.
  (Valid range is between one cache line and one 4KiB page, and must
  be a multiple of the line size.)

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Feroceon: L1 cache range operation support
Stanislav Samsonov [Tue, 3 Jun 2008 08:24:40 +0000 (11:24 +0300)]
[ARM] Feroceon: L1 cache range operation support

This patch adds support for the L1 D cache range operations that
are supported by the Marvell Discovery Duo and Marvell Kirkwood
ARM SoCs.

Signed-off-by: Stanislav Samsonov <samsonov@marvell.com>
Acked-by: Saeed Bishara <saeed@marvell.com>
Reviewed-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Loki: add defconfig
Lennert Buytenhek [Sun, 22 Jun 2008 20:45:02 +0000 (22:45 +0200)]
[ARM] Loki: add defconfig

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] add Marvell Loki (88RC8480) SoC support
Lennert Buytenhek [Sun, 22 Jun 2008 20:45:02 +0000 (22:45 +0200)]
[ARM] add Marvell Loki (88RC8480) SoC support

The Marvell Loki (88RC8480) is an ARM SoC based on a Feroceon CPU
core running at between 400 MHz and 1.0 GHz, and features a 64 bit
DDR controller, 512K of internal SRAM, two x4 PCI-Express ports,
two Gigabit Ethernet ports, two 4x SAS/SATA controllers, two UARTs,
two TWSI controllers, and IDMA/XOR engines.

This patch adds support for the Marvell LB88RC8480 Development
Board, enabling the use of the PCIe interfaces, the ethernet
interfaces, the TWSI interfaces and the UARTs.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Orion: add a separate BRIDGE_INT_TIMER1_CLR define
Ke Wei [Fri, 23 May 2008 08:23:22 +0000 (10:23 +0200)]
[ARM] Orion: add a separate BRIDGE_INT_TIMER1_CLR define

Some Feroceon-based SoCs have an MBUS bridge interrupt controller
that requires writing a one instead of a zero to clear edge
interrupt sources such as timer expiry.

This patch adds a new BRIDGE_INT_TIMER1_CLR define, which platform
code can set to either ~BRIDGE_INT_TIMER1 (write-zero-to-clear) or
BRIDGE_INT_TIMER1 (write-one-to-clear) depending on the platform.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Feroceon: allow more old Feroceon IDs
Ke Wei [Sun, 22 Jun 2008 20:45:00 +0000 (22:45 +0200)]
[ARM] Feroceon: allow more old Feroceon IDs

There are a couple more Feroceon-based SoCs out in the field that use
different Variant and Architecture fields in their Main ID registers
-- this patch tweaks the processor match/mask in proc-feroceon.S to
catch those SoCs as well.

Signed-off-by: Ke Wei <kewei@marvell.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Feroceon: catch other Feroceon CPU IDs in head.S
Nicolas Pitre [Tue, 3 Jun 2008 21:06:21 +0000 (23:06 +0200)]
[ARM] Feroceon: catch other Feroceon CPU IDs in head.S

Tweak the Feroceon match/mask in arch/arm/boot/compressed/head.S to
match a couple of newer Feroceon cores (such as the 88fr571vd with
CPU ID 0x56155710, and the 88fr131 with CPU ID 0x56251310) as well.

Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Feroceon: speed up flushing of the entire cache
Nicolas Pitre [Thu, 24 Apr 2008 00:04:54 +0000 (02:04 +0200)]
[ARM] Feroceon: speed up flushing of the entire cache

Flushing the L1 D cache with a test/clean/invalidate loop is very
easy in software, but it is not the quickest way of doing it, as
there is a lot of overhead involved in re-scanning the cache from
the beginning every time we hit a dirty line.

This patch makes proc-feroceon.S use "clean+invalidate by set/way"
loops according to possible cache configuration of Feroceon CPUs
(either direct-mapped or 4-way set associative).

Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Orion: nuke orion5x_{read,write}
Lennert Buytenhek [Wed, 28 May 2008 14:43:48 +0000 (16:43 +0200)]
[ARM] Orion: nuke orion5x_{read,write}

Nuke the Orion-specific orion5x_{read,write} wrappers.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Orion: use linux/serial_reg.h for Orion uncompress.h
Lennert Buytenhek [Wed, 4 Jun 2008 01:16:21 +0000 (03:16 +0200)]
[ARM] Orion: use linux/serial_reg.h for Orion uncompress.h

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Orion: add Maxtor Shared Storage II support
Sylver Bruneau [Mon, 9 Jun 2008 23:00:38 +0000 (01:00 +0200)]
[ARM] Orion: add Maxtor Shared Storage II support

This patch adds support for the Maxtor Shared Storage II hardware.

Signed-off-by: Sylver Bruneau <sylver.bruneau@googlemail.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Orion: add Technologic Systems TS-78xx support
Alexander Clouter [Sat, 31 May 2008 21:32:37 +0000 (22:32 +0100)]
[ARM] Orion: add Technologic Systems TS-78xx support

Signed-off-by: Alexander Clouter <alex@digriz.org.uk>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Orion: remove code duplication in TS209 and TS409 setup files
Sylver Bruneau [Sat, 31 May 2008 16:21:49 +0000 (18:21 +0200)]
[ARM] Orion: remove code duplication in TS209 and TS409 setup files

Signed-off-by: Sylver Bruneau <sylver.bruneau@googlemail.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Orion: add HP Media Vault mv2120 support
Martin Michlmayr [Sun, 6 Apr 2008 12:08:17 +0000 (14:08 +0200)]
[ARM] Orion: add HP Media Vault mv2120 support

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Orion: add Linksys WRT350N v2 support
Lennert Buytenhek [Sat, 31 May 2008 06:19:20 +0000 (08:19 +0200)]
[ARM] Orion: add Linksys WRT350N v2 support

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Tested-by: Dirk Teurlings <dirk@upexia.nl>
Tested-by: Peter van Valderen <p.v.valderen@gmail.com>
16 years ago[ARM] Orion: add 88F5181L (Orion-VoIP) support
Lennert Buytenhek [Sat, 31 May 2008 06:30:40 +0000 (08:30 +0200)]
[ARM] Orion: add 88F5181L (Orion-VoIP) support

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Russell King <linux@arm.linux.org.uk>
16 years ago[ARM] Orion: add QNAP TS-409 support
Sylver Bruneau [Sat, 26 Apr 2008 00:35:29 +0000 (02:35 +0200)]
[ARM] Orion: add QNAP TS-409 support

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Orion: implement power-off method for Kurobox Pro
Sylver Bruneau [Wed, 30 Apr 2008 06:14:58 +0000 (08:14 +0200)]
[ARM] Orion: implement power-off method for Kurobox Pro

This patch implements the communication with the microcontroller on the
Kurobox Pro and Linkstation Pro/Live boards.  This is allowing to send
the commands needed to power-off the board correctly.

Signed-off-by: Sylver Bruneau <sylver.bruneau@googlemail.com>
Acked-by: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Orion: avoid setting ->force_phy_addr
Lennert Buytenhek [Wed, 28 May 2008 14:17:39 +0000 (16:17 +0200)]
[ARM] Orion: avoid setting ->force_phy_addr

The mv643xx_eth platform data field ->force_phy_addr only needs
to be set if the passed-in ->phy_addr field is zero (to distinguish
the case of not having specified a phy address
(force_phy_addr = 0) from the case where a phy address of zero needs
to be used (force_phy_addr = 1.))

Also, the ->force_phy_addr field will hopefully disappear in a
future mv643xx_eth reorganisation.

Therefore, this patch deletes the ->force_phy_addr field initialiser
from all Orion board code.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Orion: remove error printks in ->map_irq() implementations
Lennert Buytenhek [Fri, 6 Jun 2008 10:32:59 +0000 (12:32 +0200)]
[ARM] Orion: remove error printks in ->map_irq() implementations

If all PCI devices are working as expected, the error printks in the
various implementations of ->map_irq() doesn't really provide any
useful info.  And if something is not working as expected, turning
on pci=debug gives you more useful information than the printk calls
in ->map_irq(), since the former also tells you which devices _did_
get IRQs successfully assigned.  Therefore, delete these printks
entirely.

Spotted by Russell King.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Russell King <linux@arm.linux.org.uk>
16 years ago[ARM] Orion: rework MPP handling
Lennert Buytenhek [Sat, 10 May 2008 21:25:46 +0000 (23:25 +0200)]
[ARM] Orion: rework MPP handling

Instead of having board code poke directly into the MPP configuration
registers, and separately calling orion5x_gpio_set_valid_pins() to
indicate which MPP pins can be used as GPIO pins, introduce a helper
function for configuring the roles of each of the MPP pins, and have
that helper function handle gpio validity internally.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Sylver Bruneau <sylver.bruneau@googlemail.com>
Acked-by: Russell King <linux@arm.linux.org.uk>
16 years ago[ARM] Orion: move setting up PCIe WA window into PCIe setup path
Lennert Buytenhek [Sat, 10 May 2008 15:01:18 +0000 (17:01 +0200)]
[ARM] Orion: move setting up PCIe WA window into PCIe setup path

It makes no sense to do PCIe WA window setup in the individual
board support files while the decision whether or not to use the
PCIe WA access method is made in a different place, in the PCIe
support code.

This patch moves the configuration of a PCIe WA window from the
individual Orion board support files to the central Orion PCIe
support code.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Russell King <linux@arm.linux.org.uk>
16 years ago[ARM] Orion: move EHCI/I2C/UART peripheral init into board code
Lennert Buytenhek [Tue, 22 Apr 2008 03:37:12 +0000 (05:37 +0200)]
[ARM] Orion: move EHCI/I2C/UART peripheral init into board code

This patch moves initialisation of EHCI/I2C/UART platform devices
from the common orion5x_init() into the board support code.

The rationale behind this is that only the board support code knows
whether certain peripherals have been brought out on the board, and
not initialising peripherals that haven't been brought out is
desirable for example:
- to reduce user confusion (e.g. seeing both 'eth0' and 'eth1'
  appear while there is only one ethernet port on the board); and
- to allow for future power savings (peripherals that have not
  been brought out can be clock gated off entirely).

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Russell King <linux@arm.linux.org.uk>
16 years ago[ARM] Orion: delete unused IO_SPACE_REMAP define
Lennert Buytenhek [Wed, 28 May 2008 14:20:56 +0000 (16:20 +0200)]
[ARM] Orion: delete unused IO_SPACE_REMAP define

This define isn't used anywhere in the kernel tree -- nuke it.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Russell King <linux@arm.linux.org.uk>
16 years ago[ARM] Orion: top-level IRQs are level-triggered
Lennert Buytenhek [Sun, 18 May 2008 17:46:59 +0000 (19:46 +0200)]
[ARM] Orion: top-level IRQs are level-triggered

Make it clear that Orion top-level IRQs are level-triggered.  This
means that we don't need an ->ack() handler, or at least, we don't
need the ->ack() handler (or the acking part of the ->mask_ack()
handler) to actually do anything.

Given that, we might as well point our ->mask_ack() handler at the
->mask() handler instead of providing a dummy ->ack() handler, since
providing a ->mask_ack() handler on level IRQ sources will prevent
->ack() from ever being called.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Russell King <linux@arm.linux.org.uk>
16 years ago[ARM] Feroceon: annotate 88fr531-vd CPU entries
Lennert Buytenhek [Fri, 11 Apr 2008 21:08:26 +0000 (23:08 +0200)]
[ARM] Feroceon: annotate 88fr531-vd CPU entries

Annotate the entries for the 88fr531-vd CPU core in
arch/arm/boot/compressed/head.S and arch/arm/mm/proc-feroceon.S
with the full name of the core.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Russell King <linux@arm.linux.org.uk>
16 years ago[ARM] Orion: DRAM mapping granularity is 64KiB, not 16MiB
Lennert Buytenhek [Fri, 23 May 2008 06:34:42 +0000 (08:34 +0200)]
[ARM] Orion: DRAM mapping granularity is 64KiB, not 16MiB

The DRAM base address and size fields in the CPU's MBUS bridge have
64KiB granularity, instead of the currently used 16MiB.  Since all
of the currently supported MBUS peripherals support 64KiB granularity
as well, this patch changes the Orion address map code to stop
rounding base addresses down and sizes up to multiples of 16MiB.

Found by Ke Wei <kewei@marvell.com>.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Russell King <linux@arm.linux.org.uk>
16 years ago[ARM] Orion: make window setup a little more safe
Lennert Buytenhek [Sat, 10 May 2008 21:20:50 +0000 (23:20 +0200)]
[ARM] Orion: make window setup a little more safe

Currently, Orion window setup uses hardcoded window indexes for each
of the boot/cs0/cs1/cs2/PCIe WA windows.  The static window allocation
used can clash if board support code will ever attempt to configure
both a dev2 and a PCIe WA window, as both of those use CPU mbus window
#7 at present.

This patch keeps track of the last used window, and opens subsequently
requested windows sequentially, starting from 4.  (Windows 0-3 are used
as MEM/IO windows for the PCI/PCIe buses.)

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Orion: fix various whitespace and coding style issues
Lennert Buytenhek [Sat, 10 May 2008 14:30:01 +0000 (16:30 +0200)]
[ARM] Orion: fix various whitespace and coding style issues

More cosmetic cleanup:
- Replace 8-space indents by proper tab indents.
- In structure initialisers, use a trailing comma for every member.
- Collapse "},\n{" in structure initialiers to "}, {".

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Russell King <linux@arm.linux.org.uk>
16 years ago[ARM] cache align memset and memzero
Nicolas Pitre [Sat, 12 Apr 2008 01:04:28 +0000 (21:04 -0400)]
[ARM] cache align memset and memzero

This is a natural extension following the previous patch.
Non Feroceon based targets are unchanged.

Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] cache align destination pointer when copying memory for some processors
Nicolas Pitre [Mon, 31 Mar 2008 16:38:31 +0000 (12:38 -0400)]
[ARM] cache align destination pointer when copying memory for some processors

The implementation for memory copy functions on ARM had a (disabled)
provision for aligning the source pointer before loading registers with
data.  Turns out that aligning the _destination_ pointer is much more
useful, as the read side is already sufficiently helped with the use of
preload.

So this changes the definition of the CALGN() macro to target the
destination pointer instead, and turns it on for Feroceon processors
where the gain is very noticeable.

Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] fix cache alignment code in memset.S
Nicolas Pitre [Wed, 11 Jun 2008 16:40:13 +0000 (12:40 -0400)]
[ARM] fix cache alignment code in memset.S

This code is currently disabled, which explains why no one was affected.

Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] latencytop support
Nicolas Pitre [Thu, 24 Apr 2008 05:31:46 +0000 (01:31 -0400)]
[ARM] latencytop support

Available for !SMP only at the moment.

From Russell:

|Basically, if a thread is running on a CPU, thread_saved_fp() is invalid.
|So, the question is: what guarantees do we have here that 'tsk' is not
|running on another CPU?

Signed-off-by: Nicolas Pitre <nico@marvell.com>
Tested-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years ago[ARM] Orion: update defconfig to 2.6.26-rc4
Nicolas Pitre [Mon, 5 May 2008 19:21:28 +0000 (15:21 -0400)]
[ARM] Orion: update defconfig to 2.6.26-rc4

Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
16 years agoFix performance regression on lmbench select benchmark
Linus Torvalds [Sun, 22 Jun 2008 19:23:15 +0000 (12:23 -0700)]
Fix performance regression on lmbench select benchmark

Christian Borntraeger reported that reinstating cond_resched() with
CONFIG_PREEMPT caused a performance regression on lmbench:

For example select file 500:
23 microseconds
32 microseconds

and that's really because we totally unnecessarily do the cond_resched()
in the innermost loop of select(), which is just silly.

This moves it out from the innermost loop (which only ever loops ove the
bits in a single "unsigned long" anyway), which makes the performance
regression go away.

Reported-and-tested-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>