Tejun Heo [Mon, 3 Jul 2006 07:07:27 +0000 (16:07 +0900)]
[PATCH] sata_sil: add suspend/sleep support
Add suspend/sleep support.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Tejun Heo [Mon, 3 Jul 2006 07:07:27 +0000 (16:07 +0900)]
[PATCH] sata_sil: separate out sil_init_controller()
Separate out controller initialization from sil_init_one() into
sil_init_controller(). This will be used by resume.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Tejun Heo [Mon, 3 Jul 2006 07:07:27 +0000 (16:07 +0900)]
[PATCH] libata: reimplement controller-wide PM
Reimplement controller-wide PM. ata_host_set_suspend/resume() are
defined to suspend and resume a host_set. While suspended, EHs for
all ports in the host_set are pegged using ATA_FLAG_SUSPENDED and
frozen.
Because SCSI device hotplug is done asynchronously against the rest of
libata EH and the same mutex is used when adding new device, suspend
cannot wait for hotplug to complete. So, if SCSI device hotplug is in
progress, suspend fails with -EBUSY.
In most cases, host_set resume is followed by device resume. As each
resume operation requires a reset, a single host_set-wide resume
operation may result in multiple resets. To avoid this, resume waits
upto 1 second giving PM to request resume for devices.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Tejun Heo [Mon, 3 Jul 2006 07:07:26 +0000 (16:07 +0900)]
[PATCH] libata: reimplement per-dev PM
Reimplement per-dev PM. The original implementation directly put the
device into suspended mode and didn't synchronize w/ EH operations
including hotplug. This patch reimplements ata_scsi_device_suspend()
and ata_scsi_device_resume() such that they request EH to perform the
respective operations. Both functions synchronize with hotplug such
that it doesn't operate on detached devices.
Suspend waits for completion but resume just issues request and
returns. This allows parallel wake up of devices and thus speeds up
system resume.
Due to sdev detach synchronization, it's not feasible to separate out
EH requesting from sdev handling; thus, ata_device_suspend/resume()
are removed and everything is implemented in the respective
libata-scsi functions.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Tejun Heo [Mon, 3 Jul 2006 07:07:26 +0000 (16:07 +0900)]
[PATCH] libata: implement PM EH actions
Implement two PM per-dev EH actions - ATA_EH_SUSPEND and
ATA_EH_RESUME. Each action puts the target device into suspended mode
and resumes from it respectively.
Once a device is put to suspended mode, no EH operations other than
RESUME is allowed on the device. The device will stay suspended till
it gets resumed and thus reset and revalidated. To implement this, a
new device state helper - ata_dev_ready() - is implemented and used in
EH action implementations to make them operate only on attached &
running devices.
If all possible devices on a port are suspended, reset is skipped too.
This prevents spurious events including hotplug events from disrupting
suspended devices.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Tejun Heo [Mon, 3 Jul 2006 07:07:26 +0000 (16:07 +0900)]
[PATCH] libata: separate out __ata_ehi_hotplugged()
Separate out __ata_ehi_hotplugged() from ata_ehi_hotplugged(). The
underscored version doesn't set AC_ERR_ATA_BUS. This will be used for
resume which is a hotplug event but not an ATA bus error.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Tejun Heo [Mon, 3 Jul 2006 07:07:26 +0000 (16:07 +0900)]
[PATCH] libata: implement ATA_EHI_NO_AUTOPSY and QUIET
Implement ATA_EHI_NO_AUTOPSY and QUIET. These used to be implied by
ATA_PFLAG_LOADING, but new power management and PMP support need to
use these separately. e.g. Suspend/resume operations shouldn't print
full EH messages and resume shouldn't be recorded as an error.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Tejun Heo [Mon, 3 Jul 2006 07:07:26 +0000 (16:07 +0900)]
[PATCH] libata: clean up debounce parameters and improve parameter selection
The names of predefined debounce timing parameters didn't exactly
match their usages. Rename to more generic names and implement param
selection helper sata_ehc_deb_timing() which uses EHI_HOTPLUGGED to
select params.
Combined with the previous EHI_RESUME_LINK differentiation, this makes
parameter selection accurate. e.g. user scan resumes link but normal
deb param is used instead of hotplug param.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Tejun Heo [Mon, 3 Jul 2006 07:07:26 +0000 (16:07 +0900)]
[PATCH] libata: implement ATA_EHI_RESUME_LINK
Implement ATA_EHI_RESUME_LINK, which indicates that the link needs to
be resumed. This used to be implied by ATA_EHI_HOTPLUGGED. However,
hotplug isn't the only event which requires link resume and separating
this out allows other places to request link resume. This
differentiation also allows better debounce timing selection.
This patch converts user scan to use ATA_EHI_RESUME_LINK.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Tejun Heo [Sun, 2 Jul 2006 18:02:15 +0000 (03:02 +0900)]
[PATCH] libata: replace ap_lock w/ ap->lock in ata_scsi_error()
ap_lock was used because &ap->host_set->lock was too long and used a
lot. Now that &ap->host_set->lock is replaced with ap->lock, there's
no reason to keep ap_lock.
[ed. note: that's not entirely true. ap_lock is a local variable,
caching the results of a de-ref. In theory, if the compiler is smart
enough, this patch is cosmetic. However, since this is not a fast
path (it is the error path), this patch is nonetheless acceptable,
even though it _may_ introduce a performance regression.]
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Tejun Heo [Sun, 2 Jul 2006 17:54:58 +0000 (02:54 +0900)]
[PATCH] libata: fix ehc->i.action setting in ata_eh_autopsy()
ata_eh_autopsy() used to directly assign determined action mask to
ehc->i.action thus overriding actions set by some of nested analyze
functions. This patch makes ata_eh_autopsy() add action masks just as
it's done in other places.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Tejun Heo [Wed, 28 Jun 2006 16:29:30 +0000 (01:29 +0900)]
[PATCH] libata: add ap->pflags and move core dynamic flags to it
ap->flags is way too clamped. Separate out core dynamic flags to
ap->pflags. ATA_FLAG_DISABLED is a dynamic flag but left alone as
it's referenced by a lot of LLDs and it's gonna be removed once all
LLDs are converted to new EH.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Brian King [Wed, 28 Jun 2006 13:30:31 +0000 (08:30 -0500)]
[PATCH] libata: Conditionally set host->max_cmd_len
In preparation for SAS attached SATA devices, which will
not have a libata scsi_host, only setup host->max_cmd_len
if ap->host exists.
Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Martin Hicks [Wed, 28 Jun 2006 16:17:47 +0000 (12:17 -0400)]
[PATCH] sata_vsc: data_xfer should use mmio
Hi,
sata_vsc is an MMIO device, and should use the correct data_xfer
function. This problem was introduced by:
commit
a6b2c5d4754dc539a560fdf0d3fb78a14174394a
Author: Alan Cox <alan@lxorguk.ukuu.org.uk>
Date: Mon May 22 16:59:59 2006 +0100
[PATCH] PATCH: libata. Add ->data_xfer method
Signed-off-by: Martin Hicks <mort@bork.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Andreas Schwab [Wed, 5 Jul 2006 16:57:48 +0000 (18:57 +0200)]
[PATCH] Makefile typo
Fix a typo in the toplevel makefile.
Signed-off-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
David Woodhouse [Wed, 5 Jul 2006 10:24:26 +0000 (11:24 +0100)]
[PATCH] powerpc: implement missing jiffies64_to_cputime64()
asm-powerpc/cputime.h doesn't declare jiffies64_to_cputime64() or
cputime64_sub(), and due to CONFIG_VIRT_CPU_ACCOUNTING it's not picking
up the definition from asm-generic like x86-64 & friends do.
Cc: Dave Jones <davej@redhat.com>
Cc: Andrew Morton <akpm@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Benjamin Herrenschmidt [Wed, 5 Jul 2006 05:36:15 +0000 (15:36 +1000)]
[PATCH] powerpc: Fix loss of interrupts with MPIC
With the new interrupt rework, an interrupt "host" map() callback can be
called after the interrupt is already active.
It's called again for an already mapped interrupt to allow changing the
trigger setup, and currently this is not guarded with a test of wether
the interrupt is requested or not.
I plan to change some of this logic to be a bit less lenient against
random reconfiguring of live interrupts but just not yet.
The ported MPIC driver has a bug where when that happens, it will mask
the interrupt. This changes it to preserve the previous masking of the
interrupt instead.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Linus Torvalds [Tue, 4 Jul 2006 21:00:26 +0000 (14:00 -0700)]
Merge /pub/scm/linux/kernel/git/davej/cpufreq
* master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq:
Move workqueue exports to where the functions are defined.
[CPUFREQ] Misc cleanups in ondemand.
[CPUFREQ] Make ondemand sampling per CPU and remove the mutex usage in sampling path.
[CPUFREQ] Add queue_delayed_work_on() interface for workqueues.
[CPUFREQ] Remove slowdown from ondemand sampling path.
Linus Torvalds [Tue, 4 Jul 2006 21:00:06 +0000 (14:00 -0700)]
Fix up headers_install wrt devfs removal
No devfs_fs.h header any more..
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Linus Torvalds [Tue, 4 Jul 2006 19:55:45 +0000 (12:55 -0700)]
Merge git://git.infradead.org/hdrinstall-2.6
* git://git.infradead.org/hdrinstall-2.6:
Remove export of include/linux/isdn/tpam.h
Remove <linux/i2c-id.h> and <linux/i2c-algo-ite.h> from userspace export
Restrict headers exported to userspace for SPARC and SPARC64
Add empty Kbuild files for 'make headers_install' in remaining arches.
Add Kbuild file for Alpha 'make headers_install'
Add Kbuild file for SPARC 'make headers_install'
Add Kbuild file for IA64 'make headers_install'
Add Kbuild file for S390 'make headers_install'
Add Kbuild file for i386 'make headers_install'
Add Kbuild file for x86_64 'make headers_install'
Add Kbuild file for PowerPC 'make headers_install'
Add generic Kbuild files for 'make headers_install'
Basic implementation of 'make headers_check'
Basic implementation of 'make headers_install'
Arjan van de Ven [Tue, 4 Jul 2006 10:07:22 +0000 (03:07 -0700)]
[PATCH] fix AB-BA deadlock inversion at cs46xx_dsp_remove_scb
There is a code sequence where the locking is substream->self_group.lock
-> ins->scbs[index].lock
substream->self_group.lock is interrupt safe, and taken from irq context
as well (trace is snipped for brevity)
so what can happen is
cpu 0 cpu 1
user context user context
take ins->scbs[index].lock without disabling interrupts
get substream->self_group.lock (irqsafe)
try to get ins->scbs[index].lock (spins)
interrupt happens
try to get substream->self_group.lock (spins)
which is an obvious AB-BA deadlock
fix is to just take the lock with _irqsafe
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jaroslav Kysela <perex@suse.cz>
Acked-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Zach Brown [Tue, 4 Jul 2006 09:57:52 +0000 (02:57 -0700)]
[PATCH] mthca: initialize send and receive queue locks separately
mthca: initialize send and receive queue locks separately
lockdep identifies a lock by the call site of its initialization. By
initializing the send and receive queue locks in mthca_wq_init() we confuse
lockdep. It warns that that the ordered acquiry of both locks in
mthca_modify_qp() is recursive acquiry of one lock:
=============================================
[ INFO: possible recursive locking detected ]
---------------------------------------------
modprobe/1192 is trying to acquire lock:
(&wq->lock){....}, at: [<
f892b4db>] mthca_modify_qp+0x60/0xa7b [ib_mthca]
but task is already holding lock:
(&wq->lock){....}, at: [<
f892b4ce>] mthca_modify_qp+0x53/0xa7b [ib_mthca]
Initializing the locks separately in mthca_alloc_qp_common() stops the
warning and will let lockdep enforce proper ordering on paths that acquire
both locks.
Signed-off-by: Zach Brown <zach.brown@oracle.com>
Cc: Roland Dreier <rolandd@cisco.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Yasunori Goto [Tue, 4 Jul 2006 09:57:51 +0000 (02:57 -0700)]
[PATCH] Fix copying of pgdat array on each node for ia64 memory hotplug
I found a bug in memory hot-add code for ia64.
IA64's code has copies of pgdat's array on each node to reduce memory
access over crossing node. This array is used by NODE_DATA() macro. When
new node is hot-added, this pgdat's array should be updated and copied on
new node too.
However, I used for_each_online_node() in scatter_node_data() to copy
it. This meant its array is not copied on new node.
Because initialization of structures for new node was halfway,
so online_node_map couldn't be set at this time.
To copy arrays on new node, I changed it to check value of pgdat_list[]
which is source array of copies. I tested this patch with my Memory Hotadd
emulation on Tiger4. This patch is for 2.6.17-git20.
Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Greg Ungerer [Tue, 4 Jul 2006 05:04:39 +0000 (15:04 +1000)]
[PATCH] uclinux: fix proc_task()/get_proc-task() naming
Fix changed name of proc_task() to get_proc_task().
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Linus Torvalds [Tue, 4 Jul 2006 04:32:50 +0000 (21:32 -0700)]
Merge branch 'release' of git://git./linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (44 commits)
ACPI: remove function tracing macros from drivers/acpi/*.c
ACPI: add support for Smart Battery
ACPI: handle battery notify event on broken BIOS
ACPI: handle AC notify event on broken BIOS
ACPI: asus_acpi: add S1N WLED control
ACPI: asus_acpi: correct M6N/M6R display nodes
ACPI: asus_acpi: add S1N WLED control
ACPI: asus_acpi: rework model detection
ACPI: asus_acpi: support L5D
ACPI: asus_acpi: handle internal Bluetooth / support W5A
ACPI: asus_acpi: support A4G
ACPI: asus_acpi: support W3400N
ACPI: asus_acpi: LED display support
ACPI: asus_acpi: support A3G
ACPI: asus_acpi: misc cleanups
ACPI: video: Remove unneeded acpi_handle from driver.
ACPI: thermal: Remove unneeded acpi_handle from driver.
ACPI: power: Remove unneeded acpi_handle from driver.
ACPI: pci_root: Remove unneeded acpi_handle from driver.
ACPI: pci_link: Remove unneeded acpi_handle from driver.
...
Linus Torvalds [Tue, 4 Jul 2006 04:31:05 +0000 (21:31 -0700)]
Merge branch 'devel' of /home/rmk/linux-2.6-serial
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-serial:
[SERIAL] Ensure 8250_pci quirks are not marked __devinit
[SERIAL] Convert fifosize to an unsigned int
Linus Torvalds [Tue, 4 Jul 2006 04:30:03 +0000 (21:30 -0700)]
Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] Fix lh7a40x_udc.c
[ARM] Fix warning in consistent.c
[ARM] Fix warnings in arch/arm/kernel/setup.c
[ARM] Fix ecard.c resource warnings.
[ARM] Fix ISA IRQ resources
[ARM] Fix bad asm instruction in proc-arm925.S
[ARM] More missing proc-macros.S includes
[ARM] 3708/2: fix SMP build after section ioremap changes
Linus Torvalds [Tue, 4 Jul 2006 04:29:08 +0000 (21:29 -0700)]
Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6:
[JFFS2][XATTR] Fix memory leak in POSIX-ACL support
fs/jffs2/: make 2 functions static
[MTD] NAND: Fix broken sharpsl driver
[JFFS2][XATTR] Fix xd->refcnt race condition
MTD: kernel-doc fixes + additions
MTD: fix all kernel-doc warnings
[MTD] DOC: Fixup read functions and do a little cleanup
Linus Torvalds [Tue, 4 Jul 2006 04:28:14 +0000 (21:28 -0700)]
Merge /pub/scm/linux/kernel/git/davem/net-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (27 commits)
[Bluetooth] Add RFCOMM role switch support
[Bluetooth] Allow disabling of credit based flow control
[Bluetooth] Small cleanup of the L2CAP source code
[Bluetooth] Use real devices for host controllers
[Bluetooth] Add platform device for virtual and serial devices
[Bluetooth] Add automatic sniff mode support
[Bluetooth] Correct SCO buffer size on request
[Bluetooth] Add suspend/resume support to the HCI USB driver
[Bluetooth] Use raw mode for the Frontline sniffer device
[BRIDGE]: br_dump_ifinfo index fix
[ATM]: add+use poison defines
[NET]: add+use poison defines
[IOAT]: fix kernel-doc in source files
[IOAT]: fix header file kernel-doc
[TG3]: Add ipv6 TSO feature
[IPV6]: Fix ipv6 GSO payload length
[TIPC] Fixed sk_buff panic caused by tipc_link_bundle_buf (REVISED)
[NET]: Verify gso_type too in gso_segment
[IPVS]: Add sysctl documentation
[ROSE]: Try all routes when establishing a ROSE connections.
...
Linus Torvalds [Tue, 4 Jul 2006 04:27:18 +0000 (21:27 -0700)]
Merge /pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (57 commits)
[SCSI] fix error handling in scsi_io_completion
[SCSI] qla1280: fix section mismatch warnings
[SCSI] mptsas: eliminate ghost devices
[SCSI] qla2xxx: make some more functions static
[SCSI] small whitespace cleanup for qlogic driver
[SCSI] mptbase: mpt_interrupt should return IRQ_NONE
[SCSI] mptsas: make two functions static
[SCSI] sg.c: Fix bad error handling in
[SCSI] 53c700: fix breakage caused by the autosense update
[SCSI] iscsi: add async notification of session events
[SCSI] iscsi: pass target nr to session creation
[SCSI] iscsi: break up session creation into two stages
[SCSI] iscsi: rm channel usage from iscsi
[SCSI] iscsi: fix session refcouting
[SCSI] iscsi: convert iscsi_tcp to new set/get param fns
[SCSI] iscsi: convert iser to new set/get param fns
[SCSI] iscsi: fixup set/get param functions
[SCSI] iscsi: add target discvery event to transport class
[SCSI] st: remove unused st_buffer.in_use
[SCSI] atp870u: reduce huge stack usage
...
Linus Torvalds [Tue, 4 Jul 2006 04:26:12 +0000 (21:26 -0700)]
Merge git://git./linux/kernel/git/sam/kbuild
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild:
kbuild: introduce utsrelease.h
kbuild: explicit turn off gcc stack-protector
Andrew Morton [Tue, 4 Jul 2006 00:32:22 +0000 (17:32 -0700)]
[PATCH] revert "kthread: convert stop_machine into a kthread"
Jiri reports that the stop_machin kthread conversion caused his machine to
hang when suspending. Hyperthreading is apparently involved.
I don't see why that would be and I can't reproduce it. Revert to the 2.6.17
code.
Cc: "Serge E. Hallyn" <serue@us.ibm.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Heiko Carstens [Tue, 4 Jul 2006 00:32:21 +0000 (17:32 -0700)]
[PATCH] zfcp: fix incorrect usage of fsf_req_list_lock
=================================
[ INFO: inconsistent lock state ]
---------------------------------
inconsistent {in-hardirq-W} -> {hardirq-on-W} usage.
swapper/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
(&adapter->fsf_req_list_lock){++..}, at: [<
0000000000274486>] zfcp_qdio_reqid_check+0x46/0x178
{in-hardirq-W} state was registered at:
[<
000000000005fb0c>] __lock_acquire+0xad8/0xed0
[<
00000000000604ae>] lock_acquire+0x9a/0xc8
[<
000000000035a326>] _spin_lock+0x4e/0x68
[<
0000000000274486>] zfcp_qdio_reqid_check+0x46/0x178
[<
000000000027469e>] zfcp_qdio_response_handler+0xe6/0x430
[<
0000000000219dd4>] tiqdio_thinint_handler+0xd20/0x213c
[<
000000000020229a>] do_adapter_IO+0xb2/0xc0
[<
0000000000206f32>] do_IRQ+0x136/0x16c
[<
0000000000020462>] io_no_vtime+0x16/0x1c
[<
0000000000019432>] cpu_idle+0x222/0x250
irq event stamp: 129220
hardirqs last enabled at (129220): [<
00000000000411e6>] tasklet_hi_action+0x5a/0x19c
hardirqs last disabled at (129219): [<
00000000000411c0>] tasklet_hi_action+0x34/0x19c
softirqs last enabled at (129212): [<
0000000000040b62>] __do_softirq+0x13a/0x180
softirqs last disabled at (129217): [<
000000000001fd58>] do_softirq+0xec/0xf0
other info that might help us debug this:
no locks held by swapper/0.
stack backtrace:
00000000012bb670 0000000000000002 0000000000000000 00000000012bb780
00000000012bb6e8 0000000000399122 0000000000399122 0000000000016b0a
0000000000000000 0000000000000000 0000000000000000 00000000004660e8
0000000000000000 000000000000000d 00000000012bb6e0 00000000012bb758
0000000000368b90 0000000000016b0a 00000000012bb6e0 00000000012bb730
Call Trace:
([<
0000000000016a26>] show_trace+0x76/0xdc)
[<
0000000000016b2c>] show_stack+0xa0/0xd0
[<
0000000000016b8a>] dump_stack+0x2e/0x3c
[<
000000000005e3da>] print_usage_bug+0x27e/0x290
[<
000000000005ea9c>] mark_lock+0x6b0/0x6c0
[<
000000000005f33e>] __lock_acquire+0x30a/0xed0
[<
00000000000604ae>] lock_acquire+0x9a/0xc8
[<
000000000035a326>] _spin_lock+0x4e/0x68
[<
0000000000274486>] zfcp_qdio_reqid_check+0x46/0x178
[<
000000000027469e>] zfcp_qdio_response_handler+0xe6/0x430
[<
0000000000217bd2>] tiqdio_tl+0xd02/0x2120
[<
000000000004123a>] tasklet_hi_action+0xae/0x19c
[<
0000000000040ae4>] __do_softirq+0xbc/0x180
[<
000000000001fd58>] do_softirq+0xec/0xf0
[<
0000000000040c38>] irq_exit+0x90/0xa8
[<
0000000000206f40>] do_IRQ+0x144/0x16c
[<
0000000000020462>] io_no_vtime+0x16/0x1c
[<
0000000000019432>] cpu_idle+0x222/0x250
([<
0000000000019416>] cpu_idle+0x206/0x250)
[<
000000000001405a>] rest_init+0x5a/0x68
[<
0000000000536998>] start_kernel+0x39c/0x3dc
[<
0000000000013046>] _stext+0x46/0x1000
Fix incorrect usage of fsf_req_list_lock. It's used in tasklet context
(irqs on) as well as in irq context. Therefore use the spin_lock_irqsave
variant to avoid deadlocks.
Acked-by: Andreas Herrmann <aherrman@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Heiko Carstens [Tue, 4 Jul 2006 00:32:20 +0000 (17:32 -0700)]
[PATCH] zfcp: fix incorrect usage of erp_lock
=================================
[ INFO: inconsistent lock state ]
---------------------------------
inconsistent {hardirq-on-W} -> {in-hardirq-W} usage.
swapper/0 [HC1[1]:SC0[0]:HE0:SE1] takes:
(&adapter->erp_lock){+-..}, at: [<
000000000026c7f8>] zfcp_erp_async_handler+0x3c/0x70
{hardirq-on-W} state was registered at:
[<
000000000005f33e>] __lock_acquire+0x30a/0xed0
[<
00000000000604ae>] lock_acquire+0x9a/0xc8
[<
000000000035a7ae>] _write_lock+0x4e/0x68
[<
000000000026d822>] zfcp_erp_adapter_strategy_generic+0x286/0xd94
[<
000000000026fd72>] zfcp_erp_strategy_do_action+0x91e/0x1a94
[<
0000000000271a3a>] zfcp_erp_thread+0x21a/0x1568
[<
0000000000019096>] kernel_thread_starter+0x6/0xc
[<
0000000000019090>] kernel_thread_starter+0x0/0xc
irq event stamp: 12078
hardirqs last enabled at (12077): [<
0000000000019416>] cpu_idle+0x206/0x250
hardirqs last disabled at (12078): [<
0000000000020458>] io_no_vtime+0xc/0x1c
softirqs last enabled at (12072): [<
0000000000040b62>] __do_softirq+0x13a/0x180
softirqs last disabled at (12059): [<
000000000001fd58>] do_softirq+0xec/0xf0
other info that might help us debug this:
no locks held by swapper/0.
stack backtrace:
00000000012bb648 0000000000000002 0000000000000000 00000000012bb758
00000000012bb6c0 0000000000399122 0000000000399122 0000000000016b0a
0000000000000000 0000000000000001 0000000000000000 00000000004660e8
0000000000000000 000000000000000d 00000000012bb6b8 00000000012bb730
0000000000368b90 0000000000016b0a 00000000012bb6b8 00000000012bb708
Call Trace:
([<
0000000000016a26>] show_trace+0x76/0xdc)
[<
0000000000016b2c>] show_stack+0xa0/0xd0
[<
0000000000016b8a>] dump_stack+0x2e/0x3c
[<
000000000005e3da>] print_usage_bug+0x27e/0x290
[<
000000000005e934>] mark_lock+0x548/0x6c0
[<
000000000005fb0c>] __lock_acquire+0xad8/0xed0
[<
00000000000604ae>] lock_acquire+0x9a/0xc8
[<
000000000035a662>] _write_lock_irqsave+0x62/0x80
[<
000000000026c7f8>] zfcp_erp_async_handler+0x3c/0x70
[<
0000000000279178>] zfcp_fsf_req_dispatch+0xd8/0x1fa8
[<
000000000027e538>] zfcp_fsf_req_complete+0x104/0xe4c
[<
0000000000274534>] zfcp_qdio_reqid_check+0xf4/0x178
[<
000000000027469e>] zfcp_qdio_response_handler+0xe6/0x430
[<
0000000000219dd4>] tiqdio_thinint_handler+0xd20/0x213c
[<
000000000020229a>] do_adapter_IO+0xb2/0xc0
[<
0000000000206f32>] do_IRQ+0x136/0x16c
[<
0000000000020462>] io_no_vtime+0x16/0x1c
[<
0000000000019432>] cpu_idle+0x222/0x250
([<
0000000000019416>] cpu_idle+0x206/0x250)
[<
000000000001405a>] rest_init+0x5a/0x68
[<
0000000000536998>] start_kernel+0x39c/0x3dc
[<
0000000000013046>] _stext+0x46/0x1000
Fix incorrect usage of erp_lock. Using the write_lock() variant is wrong,
since this might lead to deadlocks.
Acked-by: Andreas Herrmann <aherrman@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
OGAWA Hirofumi [Tue, 4 Jul 2006 00:32:20 +0000 (17:32 -0700)]
[PATCH] Fix modular cpuid.ko
With recent change, if CONFIG_HOTPLUG_CPU is disabled,
register_cpu_notifier() is not exported. And it breaked moduler msr/cpuid
(msr.c was already fixed).
We need to use register_hotcpu_notifier() now in module, instead of
register_cpu_notifier().
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Marcel Holtmann [Mon, 3 Jul 2006 08:37:55 +0000 (10:37 +0200)]
[Bluetooth] Add RFCOMM role switch support
This patch adds the support for RFCOMM role switching before the
connection is fully established.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann [Mon, 3 Jul 2006 08:02:51 +0000 (10:02 +0200)]
[Bluetooth] Allow disabling of credit based flow control
This patch adds the module parameter disable_cfc which can be used to
disable the credit based flow control. The credit based flow control
was introduced with the Bluetooth 1.1 specification and devices can
negotiate its support, but for testing purpose it is helpful to allow
disabling of it.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann [Mon, 3 Jul 2006 08:02:46 +0000 (10:02 +0200)]
[Bluetooth] Small cleanup of the L2CAP source code
This patch is a small cleanup of the L2CAP source code. It makes some
coding style changes and moves some functions around to avoid forward
declarations.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann [Mon, 3 Jul 2006 08:02:41 +0000 (10:02 +0200)]
[Bluetooth] Use real devices for host controllers
This patch converts the Bluetooth class devices into real devices. The
Bluetooth class is kept and the driver core provides the appropriate
symlinks for backward compatibility.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann [Mon, 3 Jul 2006 08:02:37 +0000 (10:02 +0200)]
[Bluetooth] Add platform device for virtual and serial devices
This patch adds a generic Bluetooth platform device that can be used
as parent device by virtual and serial devices.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann [Mon, 3 Jul 2006 08:02:33 +0000 (10:02 +0200)]
[Bluetooth] Add automatic sniff mode support
This patch introduces the automatic sniff mode feature. This allows
the host to switch idle connections into sniff mode to safe power.
Signed-off-by: Ulisses Furquim <ulissesf@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann [Mon, 3 Jul 2006 08:02:29 +0000 (10:02 +0200)]
[Bluetooth] Correct SCO buffer size on request
This patch introduces a quirk that allows the drivers to tell the host
to correct the SCO buffer size values.
Signed-off-by: Olivier Galibert <galibert@pobox.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann [Mon, 3 Jul 2006 08:02:24 +0000 (10:02 +0200)]
[Bluetooth] Add suspend/resume support to the HCI USB driver
This patch implements the suspend/resume methods for the HCI USB
driver by killing all outstanding URBs on suspend, and re-issuing
them on resume.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann [Mon, 3 Jul 2006 08:02:18 +0000 (10:02 +0200)]
[Bluetooth] Use raw mode for the Frontline sniffer device
The Frontline sniffer device looks like a normal H:2 Bluetooth device,
but it is not and so mark it as raw mode device.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Andrey Savochkin [Tue, 4 Jul 2006 02:50:14 +0000 (19:50 -0700)]
[BRIDGE]: br_dump_ifinfo index fix
Fix for inability of br_dump_ifinfo to handle non-zero start index:
loop index never increases when entered with non-zero start.
Spotted by Kirill Korotaev.
Signed-off-by: Andrey Savochkin <saw@swsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Randy Dunlap [Tue, 4 Jul 2006 02:48:25 +0000 (19:48 -0700)]
[ATM]: add+use poison defines
ATM: add and use POISON define values.
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Randy Dunlap [Tue, 4 Jul 2006 02:47:27 +0000 (19:47 -0700)]
[NET]: add+use poison defines
Add and use poison defines in net/.
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Randy Dunlap [Tue, 4 Jul 2006 02:45:31 +0000 (19:45 -0700)]
[IOAT]: fix kernel-doc in source files
Fix kernel-doc warnings in drivers/dma/:
- use correct function & parameter names
- add descriptions where omitted
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Randy Dunlap [Tue, 4 Jul 2006 02:44:51 +0000 (19:44 -0700)]
[IOAT]: fix header file kernel-doc
Fix kernel-doc problems in include/linux/dmaengine.h:
- add some fields/parameters
- expand some descriptions
- fix typos
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Chan [Tue, 4 Jul 2006 02:42:14 +0000 (19:42 -0700)]
[TG3]: Add ipv6 TSO feature
Enable ipv6 TSO feature on chips that support it.
Update version to 3.61.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Chan [Tue, 4 Jul 2006 02:41:11 +0000 (19:41 -0700)]
[IPV6]: Fix ipv6 GSO payload length
Fix ipv6 GSO payload length calculation.
The ipv6 payload length excludes the ipv6 base header length and so
must be subtracted.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Allan Stephens [Tue, 4 Jul 2006 02:39:36 +0000 (19:39 -0700)]
[TIPC] Fixed sk_buff panic caused by tipc_link_bundle_buf (REVISED)
The recent change to direct inspection of bundle buffer tailroom did not
account for the possiblity of unrequested tailroom added by skb_alloc(),
thereby allowing a bundle to be created that exceeds the current link MTU.
An additional check now ensures that bundling works correctly no matter
if the bundle buffer is smaller, larger, or equal to the link MTU.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Per Liden <per.liden@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Tue, 4 Jul 2006 02:38:35 +0000 (19:38 -0700)]
[NET]: Verify gso_type too in gso_segment
We don't want nasty Xen guests to pass a TCPv6 packet in with gso_type set
to TCPv4 or even UDP (or a packet that's both TCP and UDP).
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Horms [Tue, 4 Jul 2006 02:35:40 +0000 (19:35 -0700)]
[IPVS]: Add sysctl documentation
* Derived from http://www.linuxvirtualserver.org/docs/sysctl.html, v1.4
maintained by Wensong Zhang
* Adjusted preample to match ip-sysctl.txt
* Sorted options into alphabetical order
* Added expire_quiescent_template
* Removed timeout_* which are no longer present
* Incoporated doc/debug-levels.txt from IPVS source tree into
description of ipvs_debug
* Minor spelling fixes
* Further editing more than welcome
Signed-Off-By: Horms <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ralf Baechle [Tue, 4 Jul 2006 02:32:23 +0000 (19:32 -0700)]
[ROSE]: Try all routes when establishing a ROSE connections.
From Jean-Paul F6FBB
ROSE will only try to establish a route using the first route in its
routing table. Fix to iterate through all additional routes if a
connection attempt has failed.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ralf Baechle DL5RB [Tue, 4 Jul 2006 02:31:14 +0000 (19:31 -0700)]
[NETROM]: Use socket helpers instead of direct fiddling with struct sock
Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ralf Baechle DL5RB [Tue, 4 Jul 2006 02:30:18 +0000 (19:30 -0700)]
[AX.25]: Reference counting for AX.25 routes.
In the past routes could be freed even though the were possibly in use ...
Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ralf Baechle [Tue, 4 Jul 2006 02:29:15 +0000 (19:29 -0700)]
[ROSE]: Fix dereference of skb pointer after free.
If rose_route_frame return success we'll dereference a stale pointer.
Likely this is only going to result in bad statistics for the ROSE
interface.
This fixes coverity 946.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Benoit Boissinot [Tue, 4 Jul 2006 02:28:13 +0000 (19:28 -0700)]
[IOAT]: Fix a warning in ioatdma
drivers/dma/ioatdma.c: In function 'ioat_init_module':
drivers/dma/ioatdma.c:830: warning: control reaches end of non-void function
Signed-off-by: Benoit Boissinot <benoit.boissinot@ens-lyon.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Adrian Bunk [Tue, 4 Jul 2006 02:27:20 +0000 (19:27 -0700)]
[IOAT]: drivers/dma/iovlock.c: make num_pages_spanned() static
This patch makes the needlessly global num_pages_spanned() static.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Morton [Tue, 4 Jul 2006 02:26:15 +0000 (19:26 -0700)]
[AF_UNIX]: datagram getpeersec fix
The unix_get_peersec_dgram() stub should have been inlined so that it
disappears.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Randy Dunlap [Tue, 4 Jul 2006 02:24:19 +0000 (19:24 -0700)]
[IOAT]: fix sparse ulong warning
Fix sparse warning:
drivers/dma/ioatdma.c:444:32: warning: constant 0xFFFFFFFFFFFFFFC0 is so big it is unsigned long
Also needs a MAINTAINERS entry.
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Mon, 3 Jul 2006 22:28:34 +0000 (15:28 -0700)]
Merge git://git./linux/kernel/git/paulus/powerpc
* git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
powerpc: add defconfig for Freescale MPC8349E-mITX board
powerpc: Add base support for the Freescale MPC8349E-mITX eval board
Documentation: correct values in MPC8548E SEC example node
[POWERPC] Actually copy over i8259.c to arch/ppc/syslib this time
[POWERPC] Add new interrupt mapping core and change platforms to use it
[POWERPC] Copy i8259 code back to arch/ppc
[POWERPC] New device-tree interrupt parsing code
[POWERPC] Use the genirq framework
[PATCH] genirq: Allow fasteoi handler to retrigger disabled interrupts
[POWERPC] Update the SWIM3 (powermac) floppy driver
[POWERPC] Fix error handling in detecting legacy serial ports
[POWERPC] Fix booting on Momentum "Apache" board (a Maple derivative)
[POWERPC] Fix various offb and BootX-related issues
[POWERPC] Add a default config for 32-bit CHRP machines
[POWERPC] fix implicit declaration on cell.
[POWERPC] change get_property to return void *
Ingo Molnar [Mon, 3 Jul 2006 07:25:42 +0000 (00:25 -0700)]
[PATCH] sched: cleanup, convert sched.c-internal typedefs to struct
convert:
- runqueue_t to 'struct rq'
- prio_array_t to 'struct prio_array'
- migration_req_t to 'struct migration_req'
I was the one who added these but they are both against the kernel coding
style and also were used inconsistently at places. So just get rid of them at
once, now that we are flushing the scheduler patch-queue anyway.
Conversion was mostly scripted, the result was reviewed and all secondary
whitespace and style impact (if any) was fixed up by hand.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:41 +0000 (00:25 -0700)]
[PATCH] sched: cleanup, remove task_t, convert to struct task_struct
cleanup: remove task_t and convert all the uses to struct task_struct. I
introduced it for the scheduler anno and it was a mistake.
Conversion was mostly scripted, the result was reviewed and all
secondary whitespace and style impact (if any) was fixed up by hand.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:40 +0000 (00:25 -0700)]
[PATCH] sched: clean up fallout of recent changes
Clean up some of the impact of recent (and not so recent) scheduler
changes:
- turning macros into nice inline functions
- sanitizing and unifying variable definitions
- whitespace, style consistency, 80-lines, comment correctness, spelling
and curly braces police
Due to the macro hell and variable placement simplifications there's even 26
bytes of .text saved:
text data bss dec hex filename
25510 4153 192 29855 749f sched.o.before
25484 4153 192 29829 7485 sched.o.after
[akpm@osdl.org: build fix]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paul Mackerras [Mon, 3 Jul 2006 07:25:40 +0000 (00:25 -0700)]
[PATCH] lockdep: irqtrace subsystem, move account_system_vtime() calls into kernel/softirq.c
At the moment, powerpc and s390 have their own versions of do_softirq which
include local_bh_disable() and __local_bh_enable() calls. They end up
calling __do_softirq (in kernel/softirq.c) which also does
local_bh_disable/enable.
Apparently the two levels of disable/enable trigger a warning from some
validation code that Ingo is working on, and he would like to see the outer
level removed. But to do that, we have to move the account_system_vtime
calls that are currently in the arch do_softirq() implementations for
powerpc and s390 into the generic __do_softirq() (this is a no-op for other
archs because account_system_vtime is defined to be an empty inline
function on all other archs). This patch does that.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:39 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate forcedeth.c disable_irq()
nv_do_nic_poll() is called from timer softirqs, which has interrupts enabled,
but np->lock might also be taken by some other interrupt context.
The driver does disable_irq() to get around this problem, so annotate the
disable_irq()/enable_irq() calls for lockdep.
Has no effect on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Ayaz Abdulla <aabdulla@nvidia.com>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Andrew Morton [Mon, 3 Jul 2006 07:25:37 +0000 (00:25 -0700)]
[PATCH] forcedeth: typecast cleanup
Someone went nuts in there.
Cc: Ayaz Abdulla <aabdulla@nvidia.com>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Arjan van de Ven [Mon, 3 Jul 2006 07:25:36 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate hostap netdev ->xmit_lock
On Fri, 2006-06-30 at 15:45 -0700, Miles Lane wrote:
> Okay, I rebuilt my kernel with your combo patch applied.
> Then, I inserted my US Robotics USR2210 PCMCIA wifi card,
> ran "pccardutil eject", popped out the card and then inserted
> a Compaq iPaq wifi card. This triggered the following.
>
> [ INFO: possible circular locking dependency detected ]
> -------------------------------------------------------
> syslogd/1886 is trying to acquire lock:
> (&dev->queue_lock){-+..}, at: [<
c11a50b5>] dev_queue_xmit+0x120/0x24b
>
> but task is already holding lock:
> (&dev->_xmit_lock){-+..}, at: [<
c11a5118>] dev_queue_xmit+0x183/0x24b
>
> which lock already depends on the new lock.
ok this appears to be hostap playing games... it has 2 network devices
for one piece of hardware and one calls the other via the networking
layer; there is thankfully a natural ordering between the two, so just
making the slave one a separate type ought to make this work.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: "John W. Linville" <linville@tuxdriver.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:35 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate sk_locks
Teach sk_lock semantics to the lock validator. In the softirq path the
slock has mutex_trylock()+mutex_unlock() semantics, in the process context
sock_lock() case it has mutex_lock()/mutex_unlock() semantics.
Thus we treat sock_owned_by_user() flagged areas as an exclusion area too,
not just those areas covered by a held sk_lock.slock.
Effect on non-lockdep kernels: minimal, sk_lock_sock_init() has been turned
into an inline function.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:35 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate on-stack completions, mmc
lockdep needs to have the waitqueue lock initialized for on-stack
waitqueues implicitly initialized by DECLARE_COMPLETION().
Annotate mmc_wait_for_req()'s on-stack completion accordingly.
Has no effect on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Arjan van de Ven [Mon, 3 Jul 2006 07:25:33 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate vlan net device as being a special class
vlan network devices have devices nesting below it, and are a special
"super class" of normal network devices; split their locks off into a
separate class since they always nest.
[deweerdt@free.fr: fix possible null-pointer deref]
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:33 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate blkdev nesting
Teach special (recursive) locking code to the lock validator.
Effects on non-lockdep kernels:
- the introduction of the following function variants:
extern struct block_device *open_partition_by_devnum(dev_t, unsigned);
extern int blkdev_put_partition(struct block_device *);
static int
blkdev_get_whole(struct block_device *bdev, mode_t mode, unsigned flags);
which on non-lockdep are the same as open_by_devnum(), blkdev_put()
and blkdev_get().
- a subclass parameter to do_open(). [unused on non-lockdep]
- a subclass parameter to __blkdev_put(), which is a new internal
function for the main blkdev_put*() functions. [parameter unused
on non-lockdep kernels, except for two sanity check WARN_ON()s]
these functions carry no semantical difference - they only express
object dependencies towards the lockdep subsystem.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:28 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate SLAB code
Teach special (recursive) locking code to the lock validator. Has no effect
on non-lockdep kernels.
Fix initialize-locks-via-memcpy assumptions.
Effects on non-lockdep kernels: the subclass nesting parameter is passed into
cache_free_alien() and __cache_free(), and turns one internal
kmem_cache_free() call into an open-coded __cache_free() call.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Christoph Lameter <clameter@engr.sgi.com>
Cc: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Arjan van de Ven [Mon, 3 Jul 2006 07:25:28 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate sb ->s_umount
The s_umount rwsem needs to be classified as per-superblock since it's
perfectly legit to keep multiple of those recursively in the VFS locking
rules.
Has no effect on non-lockdep kernels.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:27 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate ->s_lock
Teach special (per-filesystem) locking code to the lock validator.
Minimal effect on non-lockdep kernels: one extra parameter to alloc_super().
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Heiko Carstens [Mon, 3 Jul 2006 07:25:26 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate qeth driver
Annotate the qeth driver which uses a private skb-queue-head that is safely
used in hardirq context too.
Has no effect on non-lockdep kernels.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:26 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate on-stack completions
lockdep needs to have the waitqueue lock initialized for on-stack waitqueues
implicitly initialized by DECLARE_COMPLETION(). Annotate on-stack completions
accordingly.
Has no effect on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:25 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate enable_in_hardirq()
Make use of local_irq_enable_in_hardirq() API to annotate places that enable
hardirqs in hardirq context.
Has no effect on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:24 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate 3c59x.c disable_irq()
3c59x.c's vortex_timer() function knows that vp->lock can only be used by an
irq context that it disabled - and can hence take the vp->lock without
disabling hardirqs. Teach lockdep about this.
Has no effect on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:23 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate 8390.c disable_irq()
8390.c knows that ei_local->page_lock can only be used by an irq context that
it disabled - and can hence take the ->page_lock without disabling hardirqs.
Teach lockdep about this.
Has no effect on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Arjan van de Ven [Mon, 3 Jul 2006 07:25:22 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate sound/core/seq/seq_device.c
The ops structure has complex locking rules, where not all ops are equal, some
are subordinate on others for some complex sound cards. This requires for
lockdep checking that each individual reg_mutex is considered in separation
for its locking rules.
Has no effect on non-lockdep kernels.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Jaroslav Kysela <perex@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:21 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate sound/core/seq/seq_ports.c
Teach special (recursive) locking code to the lock validator. Has no effect
on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Jaroslav Kysela <perex@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Arjan van de Ven [Mon, 3 Jul 2006 07:25:21 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate USBFS
In usbfs's fs_remove_file() function, the aim is to remove a file or
directory from usbfs. This is done by first taking the i_mutex of the
parent directory of this file/dir via
mutex_lock(&parent->d_inode->i_mutex);
and then to call either usbfs_rmdir() for a directory or usbfs_unlink()
for a file. Both these functions then take the i_mutex for the
to-be-removed object themselves:
mutex_lock(&inode->i_mutex);
This is a classical parent->child locking order relationship that the VFS uses
all over the place; the VFS locking rule is "you need to take the parent
first". This patch annotates the usbfs code to make this explicit and thus
informs the lockdep code that those two locks indeed have this relationship.
The rules for unlink that we already use in the VFS for unlink are to use
I_MUTEX_PARENT for the parent directory, and a normal mutex for the file
itself; this patch follows that convention.
Has no effect on non-lockdep kernels.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Arjan van de Ven [Mon, 3 Jul 2006 07:25:20 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate the quota code
The quota code plays interesting games with the lock ordering; to quote Jan:
| i_mutex of inode containing quota file is acquired after all other
| quota locks. i_mutex of all other inodes is acquired before quota
| locks. Quota code makes sure (by resetting inode operations and
| setting special flag on inode) that noone tries to enter quota code
| while holding i_mutex on a quota file...
The good news is that all of this special case i_mutex grabbing happens in the
(per filesystem) low level quota write function. For this special case we
need a new I_MUTEX_* nesting level, since this just entirely outside any of
the regular VFS locking rules for i_mutex. I trust Jan on his blue eyes that
this is not ever going to deadlock; and based on that the patch below is what
it takes to inform lockdep of these very interesting new locking rules.
The new locking rule for the I_MUTEX_QUOTA nesting level is that this is the
deepest possible level of nesting for i_mutex, and that this only should be
used in quota write (and possibly read) function of filesystems. This makes
the lock ordering of the I_MUTEX_* levels:
I_MUTEX_PARENT -> I_MUTEX_CHILD -> I_MUTEX_NORMAL -> I_MUTEX_QUOTA
Has no effect on non-lockdep kernels.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Jan Kara <jack@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:18 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate NTFS locking rules
NTFS uses lots of type-opaque objects which acquire their true identity
runtime - so the lock validator needs to be helped in a couple of places to
figure out object types.
Many thanks to Anton Altaparmakov for giving lots of explanations about NTFS
locking rules.
Has no effect on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Arjan van de Ven [Mon, 3 Jul 2006 07:25:16 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate sunrpc code
Add i_mutex ordering annotations to the sunrpc rpc_pipe code. This code has 3
levels of i_mutex hierarchy in some cases: parent dir, client dir and file
inside client dir; the i_mutex ordering is I_MUTEX_PARENT -> I_MUTEX_CHILD ->
I_MUTEX_NORMAL
This patch applies this ordering annotation to the various functions. This is
in line with the VFS expected ordering where it is always OK to lock a child
after locking a parent; the sunrpc code is very diligent in doing this
correctly.
Has no effect on non-lockdep kernels.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:15 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate ->mmap_sem
Teach special (recursive) locking code to the lock validator. Has no effect
on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:14 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate ieee1394 skb-queue-head locking
ieee1394 reuses the skb infrastructure of the networking code, and uses two
skb-head queues: ->pending_packet_queue and hpsbpkt_queue. The latter is used
in the usual fashion: processed from a kernel thread. The other one,
->pending_packet_queue is also processed from hardirq context (f.e. in
hpsb_bus_reset()), which is not what the networking code usually does (which
completes from softirq or process context). This locking assymetry can be
totally correct if done carefully, but it can also be dangerous if networking
helper functions are reused, which could assume traditional networking use.
It would probably be more robust to push this completion into a workqueue -
but technically the code can be 100% correct, and lockdep has to be taught
about it. The solution is to split the ->pending_packet_queue skb-head->lock
class from the networking lock-class by using a private lock-validator key.
Has no effect on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: Jody McIntyre <scjody@modernduck.com>
Cc: Ben Collins <bcollins@debian.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:13 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate bh_lock_sock()
Teach special (recursive) locking code to the lock validator. Has no effect
on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:12 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate af_unix locking
Teach special (recursive) locking code to the lock validator. Also splits
af_unix's sk_receive_queue.lock class from the other networking skb-queue
locks. Has no effect on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:12 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate sock_lock_init()
Teach special (multi-initialized, per-address-family) locking code to the lock
validator. Has no effect on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:11 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate hrtimer base locks
Teach special (recursive) locking code to the lock validator. Has no effect
on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:10 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate scheduler runqueue locks
Teach per-CPU runqueue locks and recursive locking code to the lock validator.
Has no effect on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:10 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate timer base locks
Split the per-CPU timer base locks up into separate lock classes, because they
are used recursively.
Has no effect on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:09 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate skb_queue_head_init
Teach special (multi-initialized) locking code to the lock validator. Has no
effect on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Arjan van de Ven [Mon, 3 Jul 2006 07:25:08 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate serio
The PS/2 code has a natural device order and there is a one level recursion in
this device order in terms of the cmd_mutex; annotate this explicit recursion
as ok.
Has no effect on non-lockdep kernels.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Dmitry Torokhov <dtor_core@ameritech.net>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:08 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate mm
Teach special (recursive) locking code to the lock validator. Has no effect
on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Molnar [Mon, 3 Jul 2006 07:25:07 +0000 (00:25 -0700)]
[PATCH] lockdep: annotate waitqueues
Create one lock class for all waitqueue locks in the kernel. Has no effect on
non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / log