31 Jan, 2008
8 commits
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Bug noted by Pieter Palmers: Isochronous transmit tasklets were
scheduled on isochronous receive events, in addition to the proper
isochronous receive tasklets.http://marc.info/?l=linux1394-devel&m=119783196222802
Signed-off-by: Stefan Richter
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This patch speeds up sbp2 a little bit --- but more importantly, it
brings the behavior of sbp2 and fw-sbp2 closer to each other. Like
fw-sbp2, sbp2 now does not limit the size of single transfers to 255
sectors anymore, unless told so by a blacklist flag or by module load
parameters.Only very old bridge chips have been known to need the 255 sectors
limit, and we have got one such chip in our hardwired blacklist. There
certainly is a danger that more bridges need that limit; but I prefer to
have this issue present in both fw-sbp2 and sbp2 rather than just one of
them.An OXUF922 with 400GB 7200RPM disk on an S400 controller is sped up by
this patch from 22.9 to 23.5 MB/s according to hdparm. The same effect
could be achieved before by setting a higher max_sectors module
parameter. On buses which use 1394b beta mode, sbp2 and fw-sbp2 will
now achieve virtually the same bandwidth. Fw-sbp2 only remains faster
on 1394a buses due to fw-core's gap count optimization.Signed-off-by: Stefan Richter
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The code has been in "#if 0 - #endif" since Linux 2.6.12.
Signed-off-by: Stefan Richter
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Signed-off-by: Stefan Richter
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Convert ieee1394 from nopage to fault.
Remove redundant vma range checks (correct resource range check is retained).Signed-off-by: Nick Piggin
Signed-off-by: Andrew Morton
Signed-off-by: Stefan Richter -
Signed-off-by: Joe Perches
Signed-off-by: Stefan Richter -
Replace sg->length by sg_dma_len(sg). Rename a variable for shorter
line lengths and eliminate some superfluous local variables.Signed-off-by: Stefan Richter
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Signed-off-by: Stefan Richter
30 Jan, 2008
1 commit
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This patch adds a new configuration option, which adds support for a new
early_param which gets checked in arch/x86/kernel/setup_{32,64}.c:setup_arch()
to decide wether OHCI-1394 FireWire controllers should be initialized and
enabled for physical DMA access to allow remote debugging of early problems
like issues ACPI or other subsystems which are executed very early.If the config option is not enabled, no code is changed, and if the boot
paramenter is not given, no new code is executed, and independent of that,
all new code is freed after boot, so the config option can be even enabled
in standard, non-debug kernels.With specialized tools, it is then possible to get debugging information
from machines which have no serial ports (notebooks) such as the printk
buffer contents, or any data which can be referenced from global pointers,
if it is stored below the 4GB limit and even memory dumps of of the physical
RAM region below the 4GB limit can be taken without any cooperation from the
CPU of the host, so the machine can be crashed early, it does not matter.In the extreme, even kernel debuggers can be accessed in this way. I wrote
a small kgdb module and an accompanying gdb stub for FireWire which allows
to gdb to talk to kgdb using remote remory reads and writes over FireWire.An version of the gdb stub fore FireWire is able to read all global data
from a system which is running a a normal kernel without any kernel debugger,
without any interruption or support of the system's CPU. That way, e.g. the
task struct and so on can be read and even manipulated when the physical DMA
access is granted.A HOWTO is included in this patch, in Documentation/debugging-via-ohci1394.txt
and I've put a copy online at
ftp://ftp.suse.de/private/bk/firewire/docs/debugging-via-ohci1394.txtIt also has links to all the tools which are available to make use of it
another copy of it is online at:
ftp://ftp.suse.de/private/bk/firewire/kernel/ohci1394_dma_early-v2.diffSigned-Off-By: Bernhard Kaindl
Tested-By: Thomas Renninger
Signed-off-by: Ingo Molnar
Signed-off-by: Thomas Gleixner
26 Jan, 2008
1 commit
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* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (200 commits)
[SCSI] usbstorage: use last_sector_bug flag universally
[SCSI] libsas: abstract STP task status into a function
[SCSI] ultrastor: clean up inline asm warnings
[SCSI] aic7xxx: fix firmware build
[SCSI] aacraid: fib context lock for management ioctls
[SCSI] ch: remove forward declarations
[SCSI] ch: fix device minor number management bug
[SCSI] ch: handle class_device_create failure properly
[SCSI] NCR5380: fix section mismatch
[SCSI] sg: fix /proc/scsi/sg/devices when no SCSI devices
[SCSI] IB/iSER: add logical unit reset support
[SCSI] don't use __GFP_DMA for sense buffers if not required
[SCSI] use dynamically allocated sense buffer
[SCSI] scsi.h: add macro for enclosure bit of inquiry data
[SCSI] sd: add fix for devices with last sector access problems
[SCSI] fix pcmcia compile problem
[SCSI] aacraid: add Voodoo Lite class of cards.
[SCSI] aacraid: add new driver features flags
[SCSI] qla2xxx: Update version number to 8.02.00-k7.
[SCSI] qla2xxx: Issue correct MBC_INITIALIZE_FIRMWARE command.
...
25 Jan, 2008
1 commit
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Convert to use the class iteration api.
Signed-off-by: Dave Young
Cc: Stefan Richter
Signed-off-by: Greg Kroah-Hartman
12 Jan, 2008
1 commit
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This patch relaxes the default SCSI DMA alignment from 512 bytes to 4
bytes. I remember from previous discussions that usb and firewire have
sector size alignment requirements, so I upped their alignments in the
respective slave allocs.The reason for doing this is so that we don't get such a huge amount of
copy overhead in bio_copy_user() for udev. (basically all inquiries it
issues can now be directly mapped).Acked-by: Alan Stern
Signed-off-by: James Bottomley
04 Nov, 2007
1 commit
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Torsten Kaiser wrote:
> Looking that calltrace upwards, it seems replacing the
> memset(dma->sglist,...) with sg_init_table(...) would fix the BUG_ON()
> as that inits the SG_MAGIC.Tested-by: Torsten Kaiser
Signed-off-by: Stefan Richter
02 Nov, 2007
1 commit
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Not architecture specific code should not #include .
This patch therefore either replaces them with
#include or simply removes them if they were
unused.Signed-off-by: Adrian Bunk
Signed-off-by: Jens Axboe
01 Nov, 2007
1 commit
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This patch removes dead code spotted by the Intel C Compiler.
Signed-off-by: Adrian Bunk
Signed-off-by: Stefan Richter
24 Oct, 2007
2 commits
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Most drivers need to set length and offset as well, so may as well fold
those three lines into one.Add sg_assign_page() for those two locations that only needed to set
the page, where the offset/length is set outside of the function context.Signed-off-by: Jens Axboe
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Commits
58b053e4ce9d2fc3023645c1b96e537c72aa8d9a ("Update arch/ to use sg helpers")
45711f1af6eff1a6d010703b4862e0d2b9afd056 ("[SG] Update drivers to use sg helpers")
fa05f1286be25a8ce915c5dd492aea61126b3f33 ("Update net/ to use sg helpers")converted many files to use the scatter gather helpers without ensuring
that the necessary headerfile is included. This
happened to work for ia64, powerpc, sparc64 and x86 because they
happened to drag in that file via their .On most of the others this probably broke.
Instead of increasing the header file spider web I choose to include
directly into the affectes files.Signed-off-by: Ralf Baechle
Signed-off-by: Jens Axboe
Signed-off-by: Linus Torvalds
23 Oct, 2007
1 commit
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Signed-off-by: Jens Axboe
17 Oct, 2007
9 commits
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drivers/ieee1394/ieee1394_core.c: Define spinlock using
DEFINE_SPINLOCK instead of assignment to SPIN_LOCK_UNLOCKEDSigned-off-by: Matthias Kaehlcke
Signed-off-by: Stefan Richter -
At least since nodemgr got rid of coarse global locking, accesses to
struct csr1212_keyval's reference counter should be atomic and coupled
with proper barriers. Also, calls to csr1212_keep_keyval(kv) should
occur before kv is being used.(We probably should convert refcnt to struct kref, but how to keep
csr1212_destroy_keyval's implementation non-recursively then?)Signed-off-by: Stefan Richter
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csr1212_keep_keyval(kv) in nodemgr_process_root_directory was
unbalanced if ne->vendor_name_kv already exists. This happens for
example if eth1394 or raw1394 modify the local config ROM and it is
parsed again.As a bonus, the attempt to add the vendor_name_kv sysfs attribute
when it already exists is now fixed for good.Signed-off-by: Stefan Richter
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* Delete optional and empty i2c client_register and client_unregister
callbacks.
* Use the proper i2c adapter ID.
* Don't use a template to initialize the i2c_adapter structure, it's
inefficient.
* Update a misleading comment on why we use i2c_transfer rather than
higher level i2c functions.Signed-off-by: Jean Delvare
Signed-off-by: Stefan Richter -
The nodemgr host thread can exit on its own even when kthread_should_stop
is not true, on receiving a signal (might never happen in practice, as
it ignores signals). But considering kthread_stop() must not be mixed with
kthreads that can exit on their own, I think changing the code like this
is clearer. This change means the thread can cut its sleep short when
receive a signal but looking at the code around, that sounds okay (and
again, it might never actually recieve a signal in practice).Signed-off-by: Satyam Sharma
Signed-off-by: Stefan Richter -
sbp2_host_reset and sbp2_handle_status_write are not serialized against
sbp2_alloc_device and sbp2_remove_device.Signed-off-by: Stefan Richter
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Signed-off-by: Stefan Richter
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bad_proto can be reached from points which did not take priv->lock.
Signed-off-by: Stefan Richter
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Signed-off-by: Stefan Richter
13 Oct, 2007
1 commit
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This changes the uevent buffer functions to use a struct instead of a
long list of parameters. It does no longer require the caller to do the
proper buffer termination and size accounting, which is currently wrong
in some places. It fixes a known bug where parts of the uevent
environment are overwritten because of wrong index calculations.Many thanks to Mathieu Desnoyers for finding bugs and improving the
error handling.Signed-off-by: Kay Sievers
Cc: Mathieu Desnoyers
Cc: Cornelia Huck
Signed-off-by: Greg Kroah-Hartman
11 Oct, 2007
3 commits
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Since hardware header operations are part of the protocol class
not the device instance, make them into a separate object and
save memory.Signed-off-by: Stephen Hemminger
Signed-off-by: David S. Miller -
Wrap the hard_header_parse function to simplify next step of
header_ops conversion.Signed-off-by: Stephen Hemminger
Signed-off-by: David S. Miller -
It's been a useless no-op for long enough in 2.6 so I figured it's time to
remove it. The number of people that could object because they're
maintaining unified 2.4 and 2.6 drivers is probably rather small.[ Handled drivers added by netdev tree and some missed IRDA cases... -DaveM ]
Signed-off-by: Ralf Baechle
Signed-off-by: Jeff Garzik
Signed-off-by: David S. Miller
21 Sep, 2007
1 commit
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Initialization of ohci1394 was broken according to one reporter if the
driver was statically linked, i.e. not built as loadable module. Dmesg:PCI: Device 0000:02:07.0 not available because of resource collisions
ohci1394: Failed to enable OHCI hardware.This was reported for a Toshiba Satellite 5100-503. The cause is commit
8df4083c5291b3647e0381d3c69ab2196f5dd3b7 in Linux 2.6.19-rc1 which only
served purposes of early remote debugging via FireWire. This
functionality is better provided by the currently out-of-tree driver
ohci1394_earlyinit. Reversal of the commit was OK'd by Andi Kleen.Signed-off-by: Stefan Richter
26 Aug, 2007
1 commit
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Bug found by Olaf Hering :
sbp2util_remove_command_orb_pool requires a valid lu->hi pointer.Signed-off-by: Stefan Richter
03 Aug, 2007
2 commits
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Make the option SBP2_PHYS_DMA available on all architectures where it
compiles. This includes x86-64 where I runtime-tested it successfully.Signed-off-by: Stefan Richter
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Revert commit 0555659d63c285ceb7ead3115532e1b71b0f27a7 from 2.6.22-rc1.
The dma_set_mask call somehow failed on a PowerMac G5, PPC64:
http://lkml.org/lkml/2007/8/1/344Should there ever occur a DMA mapping beyond the physical DMA range, a
proper SBP-2 firmware will report transport errors. So let's leave it
at that.Signed-off-by: Stefan Richter
Tested-by: Olaf Hering
27 Jul, 2007
1 commit
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Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds
20 Jul, 2007
1 commit
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Slab destructors were no longer supported after Christoph's
c59def9f222d44bb7e2f0a559f2906191a0862d7 change. They've been
BUGs for both slab and slub, and slob never supported them
either.This rips out support for the dtor pointer from kmem_cache_create()
completely and fixes up every single callsite in the kernel (there were
about 224, not including the slab allocator definitions themselves,
or the documentation references).Signed-off-by: Paul Mundt
18 Jul, 2007
1 commit
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Currently, the freezer treats all tasks as freezable, except for the kernel
threads that explicitly set the PF_NOFREEZE flag for themselves. This
approach is problematic, since it requires every kernel thread to either
set PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn't
care for the freezing of tasks at all.It seems better to only require the kernel threads that want to or need to
be frozen to use some freezer-related code and to remove any
freezer-related code from the other (nonfreezable) kernel threads, which is
done in this patch.The patch causes all kernel threads to be nonfreezable by default (ie. to
have PF_NOFREEZE set by default) and introduces the set_freezable()
function that should be called by the freezable kernel threads in order to
unset PF_NOFREEZE. It also makes all of the currently freezable kernel
threads call set_freezable(), so it shouldn't cause any (intentional)
change of behaviour to appear. Additionally, it updates documentation to
describe the freezing of tasks more accurately.[akpm@linux-foundation.org: build fixes]
Signed-off-by: Rafael J. Wysocki
Acked-by: Nigel Cunningham
Cc: Pavel Machek
Cc: Oleg Nesterov
Cc: Gautham R Shenoy
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
16 Jul, 2007
2 commits
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* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (166 commits)
[SCSI] ibmvscsi: convert to use the data buffer accessors
[SCSI] dc395x: convert to use the data buffer accessors
[SCSI] ncr53c8xx: convert to use the data buffer accessors
[SCSI] sym53c8xx: convert to use the data buffer accessors
[SCSI] ppa: coding police and printk levels
[SCSI] aic7xxx_old: remove redundant GFP_ATOMIC from kmalloc
[SCSI] i2o: remove redundant GFP_ATOMIC from kmalloc from device.c
[SCSI] remove the dead CYBERSTORMIII_SCSI option
[SCSI] don't build scsi_dma_{map,unmap} for !HAS_DMA
[SCSI] Clean up scsi_add_lun a bit
[SCSI] 53c700: Remove printk, which triggers because of low scsi clock on SNI RMs
[SCSI] sni_53c710: Cleanup
[SCSI] qla4xxx: Fix underrun/overrun conditions
[SCSI] megaraid_mbox: use mutex instead of semaphore
[SCSI] aacraid: add 51245, 51645 and 52245 adapters to documentation.
[SCSI] qla2xxx: update version to 8.02.00-k1.
[SCSI] qla2xxx: add support for NPIV
[SCSI] stex: use resid for xfer len information
[SCSI] Add Brownie 1200U3P to blacklist
[SCSI] scsi.c: convert to use the data buffer accessors
... -
Going through the string and waiting for _pointer_ to become '\0'
is not what the authors meant...Signed-off-by: Al Viro
Acked-by: Ben Collins
Signed-off-by: Linus Torvalds
