Davide Libenzi [Tue, 15 May 2007 08:40:41 +0000 (01:40 -0700)]
fix epoll single pass code and add wait-exclusive flag
Fixes the epoll single pass code. During the unlocked event delivery (to
userspace) code, the poll callback can re-issue new events, and we must
receive them correctly. Since we loop in a lockless fashion, we want to be
O(nready), and we don't want to flash on/off the spinlock for every event, we
have the poll callback to use a secondary list to queue events while we're
inside the event delivery loop. The rw_semaphore has been turned into a
mutex. This patch also adds the wait-exclusive flag, as suggested by Davi
Arnaut.
[AVR32] Implement platform hooks for atmel_lcdfb driver
This modifies and extends the existing lcdc platform code to support
the new atmel_lcdfb driver. The ATSTK1000 board code is set up to use
the on-board Samsung LTV350QV LCD panel.
Tony Luck [Fri, 11 May 2007 22:18:45 +0000 (15:18 -0700)]
[IA64] s/scalibility/scalability/
Previous spelling patch from Simon Arlott broke one spot that
didn't need fixing (reported by Simon within 35 minutes of the
patch ... but not until after I'd applied to GIT and pushed :-(
Jay Lan [Wed, 4 Apr 2007 00:53:42 +0000 (17:53 -0700)]
[IA64] kdump on INIT needs multi-nodes sync-up (v.2)
The current implementation of kdump on INIT events would enter
kdump processing on DIE_INIT_MONARCH_ENTER and DIE_INIT_SLAVE_ENTER
events. Thus, the monarch cpu would go ahead and boot up the kdump
On SN shub2 systems, this out-of-sync situation causes some slave
cpus on different nodes to enter POD.
This patch moves kdump entry points to DIE_INIT_MONARCH_LEAVE and
DIE_INIT_SLAVE_LEAVE. It also sets kdump_in_progress variable in
the DIE_INIT_MONARCH_PROCESS event to not dump all active stack
traces to the console in the case of kdump.
I have tested this patch on an SN machine and a HP RX2600.
Signed-off-by: Jay Lan <jlan@sgi.com> Acked-by: Zou Nan hai <nanhai.zou@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
Dave Jones [Mon, 14 May 2007 22:27:29 +0000 (18:27 -0400)]
[CPUFREQ] Correct revision mask for powernow-k8
Mark Langsdorf points out that the correct define for this
revision bump is 0x80000. Also to save us having to keep
renaming the #define, give it a more meaningful name.
Andi Kleen is unhappy with the changes, and they really do not seem
worth it. IPMI could use DIE_NMI_IPI instead of the new callback, even
though that ends up having its own set of problems too, mainly because
the IPMI code cannot really know the NMI was from IPMI or not.
Manually fix up conflicts in arch/x86_64/kernel/traps.c and
drivers/char/ipmi/ipmi_watchdog.c.
In the presence of some running RX connections, we repeat
queue_delayed_work calls each 4 RX WRs, which is a waste. It's enough
to start stale task when a first passive connection is added, and
rerun it every IPOIB_CM_RX_DELAY as long as there are outstanding
passive connections.
This removes some code from RX data path.
Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
IB/mthca: Set cleaned CQEs back to HW ownership when cleaning CQ
mthca_cq_clean() updates the CQ consumer index without moving CQEs
back to HW ownership. As a result, the same WRID might get reported
twice, resulting in a use-after-free. This was observed in IPoIB CM.
Fix by moving all freed CQEs to HW ownership.
This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=617>
Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Sean Hefty [Mon, 7 May 2007 18:49:27 +0000 (11:49 -0700)]
RDMA/cma: Add check to validate that cm_id is bound to a device
Several checks in the rdma_cm check against the state of the
cm_id, but only to validate that the cm_id is bound to an underlying
transport specific CM and an RDMA device. Make the check explicit
in what we're trying to check for, since we're not synchronizing
against the cm_id state.
This will allow a user to disconnect a cm_id or reject a connection
after receiving a device removal event.
Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Sean Hefty [Mon, 7 May 2007 18:49:12 +0000 (11:49 -0700)]
RDMA/cma: Fix synchronization with device removal in cma_iw_handler
The cma_iw_handler needs to validate the state of the rdma_cm_id before
processing a new connection request to ensure that a device removal is
not already being processed for the same rdma_cm_id. Without the state
check, the user can receive simultaneous callbacks for the same cm_id, or
a callback after they've destroyed the cm_id.
Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Joachim Fenkes [Wed, 9 May 2007 11:48:25 +0000 (13:48 +0200)]
IB/ehca: Beautify sysfs attribute code and fix compiler warnings
eHCA's sysfs attributes are now being created via sysfs_create_group(),
making the process neatly table-driven. The return value is checked, thus
fixing a few compiler warnings.
Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Joachim Fenkes [Wed, 9 May 2007 11:48:01 +0000 (13:48 +0200)]
IB/ehca: Correctly set GRH mask bit in ehca_modify_qp()
The driver needs to always supply the "GRH present" flag to the
hypervisor, whether it's true or false. Not supplying it (i.e. not
setting the corresponding mask bit) amounts to a "perhaps", which we
don't want.
Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Arthur Jones [Thu, 10 May 2007 19:10:49 +0000 (12:10 -0700)]
IB/ipath: Shadow the gpio_mask register
Once upon a time, GPIO interrupts were rare. But then a chip bug in
the waldo series forced the use of a GPIO interrupt to signal packet
reception. This greatly increased the frequency of GPIO interrupts
which have the gpio_mask bits set on the waldo chips. Other bits in
the gpio_status register are used for I2C clock and data lines, these
bits are usually on. An "unlikely" annotation leftover from the old
days was improperly applied to these bits, and an unnecessary chip
mmio read was being accessed in the interrupt fast path on waldo.
Remove the stagnant unlikely annotation in the interrupt handler and
keep a shadow copy of the gpio_mask register to avoid the slow mmio
read when testing for interruptable GPIO bits.
Signed-off-by: Arthur Jones <arthur.jones@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Jack Morgenstein [Sun, 13 May 2007 14:18:23 +0000 (17:18 +0300)]
IB/mlx4: Fix uninitialized spinlock for 32-bit archs
uar_lock spinlock was used in mlx4_ib_cq_arm without being initialized
(this only affects 32-bit archs, because uar_lock is not used on
64-bit archs and MLX4_INIT_DOORBELL_LOCK() is a NOP).
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Linus Torvalds [Mon, 14 May 2007 19:29:14 +0000 (12:29 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc:
pxamci: fix PXA27x MMC workaround for bad CRC with 136 bit response
mmc: use assigned major for block device
sdhci: handle dma boundary interrupts
mmc: au1xmmc command types check from data flags
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
[IPV4] SNMP: Display new statistics at /proc/net/netstat
[IPV6]: Reverse sense of promisc tests in ip6_mc_input
[NET_SCHED]: prio qdisc boundary condition
[IPSEC]: Don't warn if high-order hash resize fails
[IPSEC]: Check validity of direction in xfrm_policy_byid
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
[SPARC64]: Update defconfig.
[VIDEO]: XVR-500 and XVR-2500 need FB=y.
[SPARC32]: asm/system.h needs asm/smp.h
[SPARC32]: Update defconfig.
[SPARC32]: Fix sparc32 kdebug changes.
[SPARC64]: Accept ebus_bus_type for generic DMA ops.
[SPARC64]: Add missing cpus_empty() check in hypervisor xcall handling.
[SCSI]: Add help text for SCSI_ESP_CORE.
[SPARC] SBUS: display7seg.c needs asm/io.h
[SPARC] SBUS: bbc_i2c.c needs asm/io.h
[SPARC64]: Be more resiliant with PCI I/O space regs.
[SERIAL] SUNHV: Add an ID string.
Dave Jones [Sun, 13 May 2007 23:07:46 +0000 (19:07 -0400)]
MAINTAINERS update.
I've not really 'maintained' this code for years, and others
are doing a much more thorough job these days.
Removing myself might stem some of the crazier emails I get.
Signed-off-by: Dave Jones <davej@redhat.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Thomas Gleixner [Mon, 14 May 2007 09:10:02 +0000 (11:10 +0200)]
timekeeping fix patch got mis-applied
The time keeping code move to kernel/time/timekeeping.c broke the
clocksource resume logic patch, which got applied to the old file by a
fuzzy application. Fix it up and move the clocksource_resume() call to
the appropriate place.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
[ tssk, tssk, everybody should use --fuzz=0 ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pierre Ossman [Sun, 13 May 2007 20:39:23 +0000 (22:39 +0200)]
sdhci: handle dma boundary interrupts
When the device hits certain memory boundaries, it signals an
interrupt and expects to be serviced. We don't need the feature
but we need to make sure the device doesn't stall.
Mitsuru Chinen [Mon, 14 May 2007 10:07:30 +0000 (03:07 -0700)]
[IPV4] SNMP: Display new statistics at /proc/net/netstat
This displays the statistics specified in the updated IP-MIB RFC
(RFC4293) in /proc/net/netstat. The reason why these are not displayed
in /proc/net/snmp is that some existing utilities are developed under
the assumption which ipstat items in /proc/net/snmp is unchanged.
Signed-off-by: Mitsuru Chinen <mitch@linux.vnet.ibm.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Corey Mutter [Mon, 14 May 2007 10:00:27 +0000 (03:00 -0700)]
[IPV6]: Reverse sense of promisc tests in ip6_mc_input
Reverse the sense of the promiscuous-mode tests in ip6_mc_input().
Signed-off-by: Corey Mutter <crm-netdev@mutternet.com> Signed-off-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Mon, 14 May 2007 09:15:47 +0000 (02:15 -0700)]
[IPSEC]: Check validity of direction in xfrm_policy_byid
The function xfrm_policy_byid takes a dir argument but finds the policy
using the index instead. We only use the dir argument to update the
policy count for that direction. Since the user can supply any value
for dir, this can corrupt our policy count.
I know this is the problem because a few days ago I was deleting
policies by hand using indicies and accidentally typed in the wrong
direction. It still deleted the policy and at the time I thought
that was cool. In retrospect it isn't such a good idea :)
I decided against letting it delete the policy anyway just in case
we ever remove the connection between indicies and direction.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Paul Mundt [Mon, 14 May 2007 00:12:39 +0000 (09:12 +0900)]
sh64: ppoll/pselect6() and restartable syscalls.
This patch was hanging around for some time while we were waiting
for the compiler situation to improve.. now that all is well again,
finally merge it.
Paul Mundt [Mon, 14 May 2007 00:07:27 +0000 (09:07 +0900)]
sh64: Wire up many new syscalls.
This has suffered a bit of bitrot, so we're a bit behind on the
syscalls. There were a few that were wrapped incorrectly as well,
caught by the syscall checker. Fix them all up.
Daniel Drake [Wed, 2 May 2007 22:19:05 +0000 (23:19 +0100)]
[CPUFREQ] powernow-k7: fix MHz rounding issue with perflib
When the PST tables are broken, powernow-k7 uses ACPI's processor_perflib to
deduce the available frequency multipliers from the _PSS tables.
Upon frequency change, processor_perflib performs some verification on the
frequency (checks that it's within allowable bounds).
powernow-k7 deals with absolute frequencies in KHz, whereas perflib only
deals with MHz values. When performing the above verification, perflib
multiplies the MHz values by 1000 to obtain the KHz value.
We then end up with situations like the following:
- powernow-k7 multiplies the multiplier by the FSB, and obtains a value
such as 1266768 KHz
- perflib belives the same state has frequency of 1266 MHz
- acpi_processor_ppc_notifier calls cpufreq_verify_within_limits to verify
that 1266768 is in the allowable range of 0 to 1266000 (i.e. 1266 * 1000)
- it's not, so that frequency is rejected
- the maximum CPU frequency is not reachable
This patch solves the problem by rounding up the MHz values stored in perflib's
tables. Additionally it corrects a broken URL.
It also fixes http://bugzilla.kernel.org/show_bug.cgi?id=8255 although this
case is a bit different: the frequencies in the _PSS tables are wildly wrong,
but we get better results if we force ACPI to respect the fsb * multiplier
calculations (even though it seems that the multiplier values aren't entirely
correct either).
Signed-off-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: Dave Jones <davej@redhat.com>
Al Viro [Sun, 13 May 2007 09:52:32 +0000 (05:52 -0400)]
fix deadlock in loop.c
... doh
Jeremy Fitzhardinge noted that the recent loop.c cleanups worked, but
cause lockdep to complain.
Ouch. OK, the deadlock is real and yes, I'm an idiot. Speaking of which,
we probably want to s/lock/pin/ in drivers/base/map.c to avoid such
brainos again. And yes, this stuff needs clear documentation. Will try
to put one together once I get some sleep...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Avoid the costly notifier list in the pagefault path and call
the kprobes code directly. The same change went into the 2.6.22
cycle for powerpc, 2s390 and sparc64 already.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
SLUB cannot run on i386 at this point because i386 uses the page->private and
page->index field of slab pages for the pgd cache.
Make SLUB run on i386 by replacing the pgd slab cache with a quicklist.
Limit the changes as much as possible. Leave the improvised linked list in place
etc etc. This has been working here for a couple of weeks now.
Acked-by: William Lee Irwin III <wli@holomorphy.com> Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Christian Krafft [Sat, 12 May 2007 17:37:01 +0000 (10:37 -0700)]
IPMI: Add PPC openfirmware unregister
When trying to load the ipmi_si module on a powerpc with no BMC (baseboard
management controller) the driver failes to load correctly, but doesn't
unregister itself from of_platform. So, on a second modprobe the kernel
crashes. This patch adds the missing unregister call.
Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Corey Minyard <minyard@acm.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Paul Fulghum [Sat, 12 May 2007 17:36:55 +0000 (10:36 -0700)]
tty: flush flip buffer on ldisc input queue flush
Flush the tty flip buffer when the line discipline input queue is flushed,
including the user call tcflush(TCIFLUSH/TCIOFLUSH). This prevents
unexpected stale data after a user application calls tcflush().
Signed-off-by: Alan Cox <alan@redhat.com> Cc: Antonino Ingargiola <tritemio@gmail.com> Signed-off-by: Paul Fulghum <paulkf@microgate.com> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andi Kleen [Sat, 12 May 2007 15:27:40 +0000 (17:27 +0200)]
x86_64: Add asm/mtrr.h include for some builds
The earlier change to call the bp mtrr init from bugs.c broke
on some configurations due to missing includes. Noticed
by "Avuton Olrich" <avuton@gmail.com>
Dale Farnsworth [Sat, 12 May 2007 00:58:43 +0000 (10:58 +1000)]
[POWERPC] Add arch/powerpc support for the Motorola PrPMC2800
This finally adds the PPC_PRPMC2800 Kconfig option, the board setup
code (the setup and reset functions) and the defconfig, to support the
Motorola PrPMC2800 platform.
Signed-off-by: Dale Farnsworth <dale@farnsworth.org> Signed-off-by: Paul Mackerras <paulus@samba.org>