]> err.no Git - linux-2.6/log
linux-2.6
17 years agovia82cxxx: backport short cables support from pata_via.c
Bartlomiej Zolnierkiewicz [Mon, 9 Jul 2007 21:17:58 +0000 (23:17 +0200)]
via82cxxx: backport short cables support from pata_via.c

Backport short cables support from pata_via.c.

This patch should allow UDMA > 2 modes on Acer Ferrari 3400.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
17 years agosis5513: backport short cables support from pata_sis.c
Bartlomiej Zolnierkiewicz [Mon, 9 Jul 2007 21:17:58 +0000 (23:17 +0200)]
sis5513: backport short cables support from pata_sis.c

Backport short cables support from pata_sis.c.

This patch allows UDMA > 2 modes on ASUS A6K.

Thanks to testing this patch goes out to Jiri Stavinoha.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
17 years agoalim15x3: backport short cables support from pata_ali.c
Bartlomiej Zolnierkiewicz [Mon, 9 Jul 2007 21:17:58 +0000 (23:17 +0200)]
alim15x3: backport short cables support from pata_ali.c

Backport short cables support from pata_ali.c and while at it cleanup
existing cable detection code.

This patch should allow UDMA > 2 modes on HP Pavilion N5430 and Fujitsu P2000.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
17 years agopiix: backport short cables support from ata_piix.c
Bartlomiej Zolnierkiewicz [Mon, 9 Jul 2007 21:17:58 +0000 (23:17 +0200)]
piix: backport short cables support from ata_piix.c

Backport short cables support from ata_piix.c.

This patch should allow UDMA > 2 modes on:
- Acer 5602WLMi
- Acer 3682WLMi
- Asus W5F
- Acer Aspire 2023WLMi

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
17 years agoide: add short cables support
Bartlomiej Zolnierkiewicz [Mon, 9 Jul 2007 21:17:58 +0000 (23:17 +0200)]
ide: add short cables support

This patch allows users to override both host and device side cable detection
with "ideX=ata66" kernel parameter.  Thanks to this it should be now possible
to use UDMA > 2 modes on systems (laptops mainly) which use short 40-pin cable
instead of 80-pin one.

Next patches add automatic detection of some systems using short cables.

Changes:

* Rename hwif->udma_four to hwif->cbl and make it u8.

* Convert all existing users accordingly (use ATA_CBL_* defines while at it).

* Add ATA_CBL_PATA40_SHORT support to ide-iops.c:eighty_ninty_three().

* Use ATA_CBL_PATA40_SHORT for "ideX=ata66" kernel parameter.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Reviewed-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
17 years agoide: convert ide_find_best_mode() users to use ide_max_dma_mode()
Bartlomiej Zolnierkiewicz [Mon, 9 Jul 2007 21:17:57 +0000 (23:17 +0200)]
ide: convert ide_find_best_mode() users to use ide_max_dma_mode()

ide-timing.h:

* remove handling of DMA modes from ide_find_best_mode() and rename it to
  ide_find_best_pio_mode()

* drop no longer needed "map" argument from ide_find_best_pio_mode()
  and delete needless ->id check

* remove no longer needed XFER_SWDMA and XFER_UDMA* defines

au1xxx-ide.c:

* use ide_max_dma_mode() instead of ide_find_best_mode()

* remove needless CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA #ifdef

amd74xx.c:

* store UDMA masks in amd_ide_chip[] and while at it make "base" field
  to be u8 instead of unsigned long

* convert the driver to use UDMA masks from amd_ide_chip[]

* use ide_max_dma_mode() and ide_find_best_pio_mode() instead
  of ide_find_best_mode()

* delete stale comment from amd74xx_ide_dma_check()

* remove no longer needed AMD_UDMA* defines

via82cxxx.c:

* remove unused DISPLAY_VIA_TIMINGS define

* store UDMA masks in via_isa_bridges[] and while at it make "flags" field
  to be u8 instead of u16

* convert the driver to use UDMA masks from via_isa_bridges[]

* use ide_max_dma_mode() and ide_find_best_pio_mode() instead
  of ide_find_best_mode()

* remove no longer needed VIA_UDMA* defines

pmac.c:

* use ide_max_dma_mode() instead of ide_find_best_mode()

There should be no functionality changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Reviewed-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
17 years agoide: fix pre-EIDE SWDMA support
Bartlomiej Zolnierkiewicz [Mon, 9 Jul 2007 21:17:57 +0000 (23:17 +0200)]
ide: fix pre-EIDE SWDMA support

If the word 62 is not defined use the word 52 to get SWDMA mask
in ide_get_mode_mask().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
17 years agodrivers/ide/legacy/hd.c: Array size calculation using sizeof replaced with ARRAY_SIZE
Andi Drebes [Mon, 9 Jul 2007 21:17:57 +0000 (23:17 +0200)]
drivers/ide/legacy/hd.c: Array size calculation using sizeof replaced with ARRAY_SIZE

This patch replaces an array size calculation in drivers/ide/legacy/hd.c
that was done using sizeof with the ARRAY_SIZE macro.

Tested by compilation on an i386 box using "allyesconfig".
Diffed against Linus' git-tree.

Signed-off-by: Andi Drebes <lists-receive@programmierforen.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
17 years agoide: remove content related to dead CONFIG_BLK_DEV_MAC_MEDIABAY config variable
Robert P. J. Day [Mon, 9 Jul 2007 21:17:57 +0000 (23:17 +0200)]
ide: remove content related to dead CONFIG_BLK_DEV_MAC_MEDIABAY config variable

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
17 years agoide: remove references to the non-existent CONFIG_SCSI_EATA_DMA
Robert P. J. Day [Mon, 9 Jul 2007 21:17:57 +0000 (23:17 +0200)]
ide: remove references to the non-existent CONFIG_SCSI_EATA_DMA

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
17 years agoide-cd: replace C code with call to ARRAY_SIZE() macro
Robert P. J. Day [Mon, 9 Jul 2007 21:17:57 +0000 (23:17 +0200)]
ide-cd: replace C code with call to ARRAY_SIZE() macro

Delete the unnecessary macro ARY_LEN and use ARRAY_SIZE directly.

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
17 years agoide_in_drive_list(): "ALL" is not a wildcard anymore
Junio C Hamano [Mon, 9 Jul 2007 21:17:57 +0000 (23:17 +0200)]
ide_in_drive_list(): "ALL" is not a wildcard anymore

This removes the support to treat "ALL" as a wildcard for
firmware revision.  This is made a separate patch, as it will
break out-of-tree ide drivers that feed its own table that uses
"ALL" as the wildcard to ide_in_drive_list().

Signed-off-by: Junio C Hamano <junkio@cox.net>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
17 years agomips au1xxx_ide.h: use NULL as firmware-revision wildcard
Junio C Hamano [Mon, 9 Jul 2007 21:17:56 +0000 (23:17 +0200)]
mips au1xxx_ide.h: use NULL as firmware-revision wildcard

This updates the DMA whitelist in MIPS specific au1xxx ide
driver to use NULL instead of "ALL" as the wildcard.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
17 years agoide_in_drive_list(): accept NULL as the wildcard for firmware revision
Junio C Hamano [Mon, 9 Jul 2007 21:17:56 +0000 (23:17 +0200)]
ide_in_drive_list(): accept NULL as the wildcard for firmware revision

Earlier, the matching of (model,rev) in ide-dma black/white list
handling was to consider "ALL" in the table to match any
revision.  This makes NULL to be also an accepted wildcard, and
changes the entries of tables in ide-dma.c to use NULL.

The code still accepts "ALL" as the wildcard, in order to keep
any out-of-tree ide driver that feeds its own table that uses
"ALL" as the wildcard to ide_in_drive_list() function from
breaking.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
17 years agoaec62xx: kill speedproc() method wrapper (take 2)
Sergei Shtylyov [Mon, 9 Jul 2007 21:17:56 +0000 (23:17 +0200)]
aec62xx: kill speedproc() method wrapper (take 2)

There's no reason to have the speedproc() method wrapper for the two quite
different chip families, so just get rid of it.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
17 years agoide: use mutex instead of ide_setting_sem semaphore in IDE driver
Matthias Kaehlcke [Mon, 9 Jul 2007 21:17:56 +0000 (23:17 +0200)]
ide: use mutex instead of ide_setting_sem semaphore in IDE driver

The IDE driver uses a semaphore as mutex.
Use the mutex API instead of the (binary) semaphore.

Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
--

17 years agoaec62xx: remove init_dma() method (take 2)
Sergei Shtylyov [Mon, 9 Jul 2007 21:17:56 +0000 (23:17 +0200)]
aec62xx: remove init_dma() method (take 2)

Get rid of the init_dma() method (which had no particular reason to exist) by
folding it into the init_hwif() method. While at it, also perform some cleanup
in the latter method:

- get rid of the useless clearing of hwif->autodma;

- fold the serialization code into one 'if' statement;

- fold setting the drives' 'autotune' and 'autodma' fields into the single
  statements...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
17 years agoaec62xx: rework init_setup_aec6x80()
Sergei Shtylyov [Mon, 9 Jul 2007 21:17:56 +0000 (23:17 +0200)]
aec62xx: rework init_setup_aec6x80()

Rework init_setup_aec6x80() so that it won't rewrite the constant name strings
anymore -- in order to do this:

- in aec62xx_init_one(), pass a local copy of 'struct pci_device_id' down the
  call chain;

- change the names for in aec62xx_chipsets[] to default to AEC-6280[R];

- override the 'name' field in init_setup_aec6x80() only if bit 4 of the DMA
  status register is set.

While at it, also change the 'udma_mask' field for AEC-6x80R chips in this
function and remove the code doing the same from the init_hwif() method...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
17 years agocmd64x: init. code cleanup
Sergei Shtylyov [Mon, 9 Jul 2007 21:17:55 +0000 (23:17 +0200)]
cmd64x: init. code cleanup

Fix two minor issues with PCI0646 chip reporting in the init_chipset() method:
"IRQ workaround enabled" message printed out not only for revision 0x01 and
"CMD646: chipset revision" printed twice (by IDE core and the driver itself).
Also, remove empty/pointless switch cases for the chips other than PCI0646,
duplicate write to the MRDMODE register when enabling interrupts and MEMORY
READ LINE cycles, and needless/misplaced initialization of the timing registers
in this method.
Switch to reading only the PCI revision ID register itself, not the whole 32
bits at its address in init_chipset() and init_hwif() methods; in addition,
get rid of the useless clearing of hwif->autodma and perform some cosmetic
style changes in the latter method.
Refactor ata66_cmd64x() by moving all the code into the 'switch' statement,
renaming/adding variables, and fixing the coding style.
While at it, finally get rid of the meaningless aliasing register #define's...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
17 years agohpt366: simplify UltraDMA filtering (take 4)
Sergei Shtylyov [Mon, 9 Jul 2007 21:17:55 +0000 (23:17 +0200)]
hpt366: simplify UltraDMA filtering (take 4)

Simplify UltraDMA mode filtering in the driver:

- make use of the newly introduced 'udma_mask' field of 'ide_pci_device_t' to
  set the correct hwif->ultra_mask, modifying init_setup_hpt366() to select
  the correct mask based on the chip revision;

- replace 'max_mode' field of the 'struct hpt_info' with 'max_ultra' specifying
  the maximum UltraDMA mode allowed;

- rewrite hpt3xx_udma_filter() to differ the filters based on the 'chip_type'
  field, and only use it for HPT366 and HPT370[A] where it's really necessary.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
17 years agoide: use mutex instead of ide_cfg_sem semaphore in IDE driver
Matthias Kaehlcke [Mon, 9 Jul 2007 21:17:55 +0000 (23:17 +0200)]
ide: use mutex instead of ide_cfg_sem semaphore in IDE driver

The IDE driver uses a semaphore as mutex.
Use the mutex API instead of the (binary) semaphore.

Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
17 years agoide: make void and rename ide_dma_timeout() method
Sergei Shtylyov [Mon, 9 Jul 2007 21:17:54 +0000 (23:17 +0200)]
ide: make void and rename ide_dma_timeout() method

Since ide_dma_timeout() method's result is discarded, make it return 'void'.
While at it, drop 'ide_' from the method's name, drop the '__' prefix from
the default method's name, and do some cleanups in this method driver-wise:

- in ide-dma.c, au1xxx-ide.c, and pdc202xx_old.c, define/use 'hwif' variable;

- in au1xxx-ide.c, get rid of commented out printk();

- in sl82c105.c, get rid of unnecessary variables.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
17 years agoide: make void and rename ide_dma_lostirq() method
Sergei Shtylyov [Mon, 9 Jul 2007 21:17:54 +0000 (23:17 +0200)]
ide: make void and rename ide_dma_lostirq() method

Since ide_dma_lostirq() method's result is discarded, make it return 'void'.
While at it, rename the method to dma_lost_irq(), drop the '__' prefix from the
default method's name, and do some cleanups in this method driver-wise:

- in aec62xx.c, rename the method in accordance with other drivers, and get rid
  of unnecessary variables there;

- in pdc202xx_old.c, define/use 'hwif' variable;

- in sgiioc4.c, rearrange the code to call the resetproc() method directly.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
17 years agoserverworks: always tune CSB6
Bartlomiej Zolnierkiewicz [Mon, 9 Jul 2007 21:17:53 +0000 (23:17 +0200)]
serverworks: always tune CSB6

Switch the driver to always program DMA/PIO timings and set device transfer
mode instead of trusting BIOS on CSB6 controllers (libata pata_serverworks.c
driver is also doing things this way and there were no problems reported so
far).  While doing conversion I noticed that the old code had many issues:

* the code was assuming that hwif->dma_status is always valid
  (which obviously isn't true if hwif->dma_base == NULL)

* value of "(ultra_timing >> (4*unit)) & ~(0xF0)" expression wasn't checked
  to fit into udma_modes[5]

* code validating DMA timings didn't validate corresponding PIO timings

* extra CSB5 PIO register wasn't validated et all

* hwif->ide_dma_off_quietly() is always called before ide_set_dma() (which in
  turn calls hwif->speedproc() method - svwks_tune_chipset() in this case)
  so the code depending on DMA capable bit of DMA status to be set was never
  executed (=> the code was never validating DMA timings despite actually
  enabling DMA if the PIO timings were OK!)

* on resume driver dependend entirely on BIOS to restore timings and set
  transfer mode on the device

While at it:

There is no need to read PIO/MWDMA timings now so don't do it.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
17 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy...
Linus Torvalds [Mon, 9 Jul 2007 20:09:16 +0000 (13:09 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6:
  JFS: Update print_hex_dump() syntax
  JFS: use print_hex_dump() rather than private dump_mem() function
  JFS: Whitespace cleanup and remove some dead code

17 years agosched: add CFS credits
Ingo Molnar [Mon, 9 Jul 2007 16:52:01 +0000 (18:52 +0200)]
sched: add CFS credits

add credits for recent major scheduler contributions:

  Con Kolivas, for pioneering the fair-scheduling approach
  Peter Williams, for smpnice
  Mike Galbraith, for interactivity tuning of CFS
  Srivatsa Vaddagiri, for group scheduling enhancements

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: micro-optimize mmdrop()
Ingo Molnar [Mon, 9 Jul 2007 16:52:01 +0000 (18:52 +0200)]
sched: micro-optimize mmdrop()

micro-optimize mmdrop(). Improves schedule()'s assembly a bit.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: more agressive idle balancing
Ingo Molnar [Mon, 9 Jul 2007 16:52:01 +0000 (18:52 +0200)]
sched: more agressive idle balancing

the Linux scheduler is starving a number of workloads. So default
to more agressive idle-balancing. This hurts lmbench context-switching
numbers (which was the main reason we sucked at idle-balancing for
such a long time) but the lmbench numbers are fine once the system is
minimally utilized.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: clean up sleep_on() APIs
Ingo Molnar [Mon, 9 Jul 2007 16:52:01 +0000 (18:52 +0200)]
sched: clean up sleep_on() APIs

clean up the sleep_on() APIs:

 - do not use fastcall
 - replace fragile macro magic with proper inline functions

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: style cleanups
Ingo Molnar [Mon, 9 Jul 2007 16:52:00 +0000 (18:52 +0200)]
sched: style cleanups

4 small style cleanups to sched.c: checkpatch.pl is now happy about
the totality of sched.c [ignoring false positives] - yay! ;-)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: do not set softirqs to nice +19
Ingo Molnar [Mon, 9 Jul 2007 16:52:00 +0000 (18:52 +0200)]
sched: do not set softirqs to nice +19

do not set softirqs to nice +19. _If_ for whatever reason
we missed to process some high-prio softirq and woke up
ksoftirqd, we should give it a fair chance to actually
get some work done, even if the system is under load.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: simplify sched_find_first_bit()
Mike Galbraith [Mon, 9 Jul 2007 16:52:00 +0000 (18:52 +0200)]
sched: simplify sched_find_first_bit()

simplify sched_rt.c's sched_find_first_bit() function: there are
only 100 RT priority levels left.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: add CFS documentation
Ingo Molnar [Mon, 9 Jul 2007 16:52:00 +0000 (18:52 +0200)]
sched: add CFS documentation

add Documentation/sched-design-CFS.txt

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: scheduler debugging, enable in Kconfig
Ingo Molnar [Mon, 9 Jul 2007 16:52:00 +0000 (18:52 +0200)]
sched: scheduler debugging, enable in Kconfig

enable CONFIG_SCHED_DEBUG in lib/Kconfig.debug.

the runtime overhead of this option is very small.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: scheduler debugging, core
Ingo Molnar [Mon, 9 Jul 2007 16:52:00 +0000 (18:52 +0200)]
sched: scheduler debugging, core

scheduler debugging core: implement /proc/sched_debug and
/proc/<PID>/sched files for scheduler debugging.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: add CFS debug sysctls
Ingo Molnar [Mon, 9 Jul 2007 16:52:00 +0000 (18:52 +0200)]
sched: add CFS debug sysctls

add CFS debug sysctls: only tweakable if SCHED_DEBUG is enabled.
This allows for faster debugging of scheduler problems.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: remove old cpu accounting field
Ingo Molnar [Mon, 9 Jul 2007 16:52:00 +0000 (18:52 +0200)]
sched: remove old cpu accounting field

remove the old cpu-accounting field from signal_struct, now
that the code is using CFS's stats.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: remove unused rq types from sched.c
Ingo Molnar [Mon, 9 Jul 2007 16:52:00 +0000 (18:52 +0200)]
sched: remove unused rq types from sched.c

remove unused rq types from sched.c, now that we switched
over to CFS.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: remove batch_task()
Ingo Molnar [Mon, 9 Jul 2007 16:52:00 +0000 (18:52 +0200)]
sched: remove batch_task()

batch_task() in sched.h is now unused - remove it.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: remove interactivity types from sched.h
Ingo Molnar [Mon, 9 Jul 2007 16:52:00 +0000 (18:52 +0200)]
sched: remove interactivity types from sched.h

remove now-unused types/fields used by the old scheduler.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: remove interactivity types
Ingo Molnar [Mon, 9 Jul 2007 16:52:00 +0000 (18:52 +0200)]
sched: remove interactivity types

remove now unused interactivity-heuristics related defined and
types of the old scheduler.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: clean up include files in sched.c
Ingo Molnar [Mon, 9 Jul 2007 16:52:00 +0000 (18:52 +0200)]
sched: clean up include files in sched.c

clean up include files in sched.c, they were still old-style <asm/>.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: clean up fastcall uses of sched_fork()/sched_exit()
Ingo Molnar [Mon, 9 Jul 2007 16:52:00 +0000 (18:52 +0200)]
sched: clean up fastcall uses of sched_fork()/sched_exit()

sched_fork()/sched_exit() does not need to specify fastcall anymore,
as the x86 kernel defaults to regparm3, and no assembly code calls
these functions.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: update delay-accounting to use CFS's precise stats
Balbir Singh [Mon, 9 Jul 2007 16:52:00 +0000 (18:52 +0200)]
sched: update delay-accounting to use CFS's precise stats

update delay-accounting to use CFS's precise stats.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: make use of precise accounting for /proc task stats
Ingo Molnar [Mon, 9 Jul 2007 16:51:59 +0000 (18:51 +0200)]
sched: make use of precise accounting for /proc task stats

make use of CFS's precise accounting to drive /proc/<pid>/stat statistics.

this code was co-authored by:

 Balbir Singh <balbir@linux.vnet.ibm.com>
 Dmitry Adamushko <dmitry.adamushko@gmail.com>
 Ingo Molnar <mingo@elte.hu>

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Dmitry Adamushko <dmitry.adamushko@gmail.com>
17 years agosched: turn on the use of unstable events
Ingo Molnar [Mon, 9 Jul 2007 16:51:59 +0000 (18:51 +0200)]
sched: turn on the use of unstable events

make use of sched-clock-unstable events.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: x86, track TSC-unstable events
Ingo Molnar [Mon, 9 Jul 2007 16:51:59 +0000 (18:51 +0200)]
sched: x86, track TSC-unstable events

track TSC-unstable events and propagate it to the scheduler code.
Also allow sched_clock() to be used when the TSC is unstable,
the rq_clock() wrapper creates a reliable clock out of it.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: cfs core code
Ingo Molnar [Mon, 9 Jul 2007 16:51:59 +0000 (18:51 +0200)]
sched: cfs core code

apply the CFS core code.

this change switches over the scheduler core to CFS's modular
design and makes use of kernel/sched_fair/rt/idletask.c to implement
Linux's scheduling policies.

thanks to Andrew Morton and Thomas Gleixner for lots of detailed review
feedback and for fixlets.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Dmitry Adamushko <dmitry.adamushko@gmail.com>
Signed-off-by: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
17 years agosched: remove the sleep-bonus interactivity code
Ingo Molnar [Mon, 9 Jul 2007 16:51:59 +0000 (18:51 +0200)]
sched: remove the sleep-bonus interactivity code

remove the sleep-bonus interactivity code from the core scheduler.

scheduling policy is implemented in the policy modules, and CFS does
not need such type of heuristics.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: remove expired_starving()
Ingo Molnar [Mon, 9 Jul 2007 16:51:59 +0000 (18:51 +0200)]
sched: remove expired_starving()

remove the expired_starving() heuristics from the core scheduler.

CFS does not need it, and this did not really work well in practice
anyway, due to the rq->nr_running multiplier to STARVATION_LIMIT.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: remove sleep_type
Ingo Molnar [Mon, 9 Jul 2007 16:51:59 +0000 (18:51 +0200)]
sched: remove sleep_type

remove the sleep_type heuristics from the core scheduler - scheduling
policy is implemented in the scheduling-policy modules. (and CFS does
not use this type of sleep-type heuristics)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: cfs, add load-calculation methods
Ingo Molnar [Mon, 9 Jul 2007 16:51:59 +0000 (18:51 +0200)]
sched: cfs, add load-calculation methods

add the new load-calculation methods of CFS.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: clean up __normal_prio() position
Ingo Molnar [Mon, 9 Jul 2007 16:51:59 +0000 (18:51 +0200)]
sched: clean up __normal_prio() position

clean up: move __normal_prio() in head of normal_prio().

no code changed.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: cleanup: move dequeue/enqueue_task()
Ingo Molnar [Mon, 9 Jul 2007 16:51:59 +0000 (18:51 +0200)]
sched: cleanup: move dequeue/enqueue_task()

cleanup: move dequeue/enqueue_task() to a more logical place, to
not split up __normal_prio()/normal_prio().

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: move around resched_task()
Ingo Molnar [Mon, 9 Jul 2007 16:51:59 +0000 (18:51 +0200)]
sched: move around resched_task()

move resched_task()/resched_cpu() into the 'public interfaces'
section of sched.c, for use by kernel/sched_fair/rt/idletask.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: remove the SleepAVG field
Ingo Molnar [Mon, 9 Jul 2007 16:51:59 +0000 (18:51 +0200)]
sched: remove the SleepAVG field

remove the SleepAVG field from /proc/<pid>/status, as
with the removal of the sleep-average code this value
no longer makes sense.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: clean up the rt priority macros
Ingo Molnar [Mon, 9 Jul 2007 16:51:59 +0000 (18:51 +0200)]
sched: clean up the rt priority macros

clean up the rt priority macros, pointed out by Andrew Morton.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: add cfs_rq ops
Ingo Molnar [Mon, 9 Jul 2007 16:51:58 +0000 (18:51 +0200)]
sched: add cfs_rq ops

add the set_task_cfs_rq() abstraction needed by CONFIG_FAIR_GROUP_SCHED.

(not activated yet)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: make posix-cpu-timers use CFS's accounting information
Ingo Molnar [Mon, 9 Jul 2007 16:51:58 +0000 (18:51 +0200)]
sched: make posix-cpu-timers use CFS's accounting information

update the posix-cpu-timers code to use CFS's CPU accounting information.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: add rq_clock()/__rq_clock()
Ingo Molnar [Mon, 9 Jul 2007 16:51:58 +0000 (18:51 +0200)]
sched: add rq_clock()/__rq_clock()

add rq_clock()/__rq_clock(), a robust wrapper around sched_clock(),
used by CFS. It protects against common type of sched_clock() problems
(caused by hardware): time warps forwards and backwards.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: cfs rq data types
Ingo Molnar [Mon, 9 Jul 2007 16:51:58 +0000 (18:51 +0200)]
sched: cfs rq data types

add the CFS rq data types to sched.c.

(the old scheduler fields are still intact, they are removed
 by a later patch)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: cfs, core data types
Ingo Molnar [Mon, 9 Jul 2007 16:51:58 +0000 (18:51 +0200)]
sched: cfs, core data types

add the CFS data types to sched.h.

(the old scheduler is still fully intact.)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: cfs core, kernel/sched_idletask.c
Ingo Molnar [Mon, 9 Jul 2007 16:51:58 +0000 (18:51 +0200)]
sched: cfs core, kernel/sched_idletask.c

add kernel/sched_idletask.c - which implements the idle thread
scheduling class. This further simplifies sched.c (under CFS),
for example a number of 'if (p == rq->idle)' type of special-cases
can be removed from sched.c, and schedule() gets simpler too.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: cfs core, kernel/sched_rt.c
Ingo Molnar [Mon, 9 Jul 2007 16:51:58 +0000 (18:51 +0200)]
sched: cfs core, kernel/sched_rt.c

add kernel/sched_rt.c: SCHED_FIFO/SCHED_RR support. The behavior
and semantics of SCHED_FIFO/SCHED_RR tasks is unchanged.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: cfs core, kernel/sched_fair.c
Ingo Molnar [Mon, 9 Jul 2007 16:51:58 +0000 (18:51 +0200)]
sched: cfs core, kernel/sched_fair.c

add kernel/sched_fair.c - which implements the bulk of CFS's
behavioral changes for SCHED_OTHER tasks.

see Documentation/sched-design-CFS.txt about details.

Authors:

 Ingo Molnar <mingo@elte.hu>
 Dmitry Adamushko <dmitry.adamushko@gmail.com>
 Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
 Mike Galbraith <efault@gmx.de>

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Dmitry Adamushko <dmitry.adamushko@gmail.com>
Signed-off-by: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
17 years agosched: increase the resolution of smpnice
Ingo Molnar [Mon, 9 Jul 2007 16:51:58 +0000 (18:51 +0200)]
sched: increase the resolution of smpnice

increase SMP-nice's resolution. This is needed by CFS to
implement SCHED_IDLE and cleaned up nice level support.

no behavioral changes.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: move code into kernel/sched_stats.h
Ingo Molnar [Mon, 9 Jul 2007 16:51:58 +0000 (18:51 +0200)]
sched: move code into kernel/sched_stats.h

create sched_stats.h and move sched.c schedstats code into it.
This cleans up sched.c a bit.

no code changes are caused by this patch.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: add init_idle_bootup_task()
Ingo Molnar [Mon, 9 Jul 2007 16:51:58 +0000 (18:51 +0200)]
sched: add init_idle_bootup_task()

add the init_idle_bootup_task() callback to the bootup thread,
unused at the moment. (CFS will use it to switch the scheduling
class of the boot thread to the idle class)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: add in_atomic_preempt_off()
Ingo Molnar [Mon, 9 Jul 2007 16:51:58 +0000 (18:51 +0200)]
sched: add in_atomic_preempt_off()

add in_atomic_preempt_off() - debugging helper that will
simplify schedule().

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: remove sched_exit()
Ingo Molnar [Mon, 9 Jul 2007 16:51:58 +0000 (18:51 +0200)]
sched: remove sched_exit()

remove sched_exit(): the elaborate dance of us trying to recover
timeslices given to child tasks never really worked.

CFS does not need it either.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: uninline set_task_cpu()
Ingo Molnar [Mon, 9 Jul 2007 16:51:58 +0000 (18:51 +0200)]
sched: uninline set_task_cpu()

uninline set_task_cpu(): CFS will add more code to it.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: zap the migration init / cache-hot balancing code
Ingo Molnar [Mon, 9 Jul 2007 16:51:57 +0000 (18:51 +0200)]
sched: zap the migration init / cache-hot balancing code

the SMP load-balancer uses the boot-time migration-cost estimation
code to attempt to improve the quality of balancing. The reason for
this code is that the discrete priority queues do not preserve
the order of scheduling accurately, so the load-balancer skips
tasks that were running on a CPU 'recently'.

this code is fundamental fragile: the boot-time migration cost detector
doesnt really work on systems that had large L3 caches, it caused boot
delays on large systems and the whole cache-hot concept made the
balancing code pretty undeterministic as well.

(and hey, i wrote most of it, so i can say it out loud that it sucks ;-)

under CFS the same purpose of cache affinity can be achieved without
any special cache-hot special-case: tasks are sorted in the 'timeline'
tree and the SMP balancer picks tasks from the left side of the
tree, thus the most cache-cold task is balanced automatically.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: add SCHED_IDLE policy
Ingo Molnar [Mon, 9 Jul 2007 16:51:57 +0000 (18:51 +0200)]
sched: add SCHED_IDLE policy

this patch adds the SCHED_IDLE policy to sched.h.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agosched: rename idle_type/SCHED_IDLE
Ingo Molnar [Mon, 9 Jul 2007 16:51:57 +0000 (18:51 +0200)]
sched: rename idle_type/SCHED_IDLE

enum idle_type (used by the load-balancer) clashes with the
SCHED_IDLE name that we want to introduce. 'CPU_IDLE' instead
of 'SCHED_IDLE' is more descriptive as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
17 years agoLinux 2.6.22 v2.6.22
Linus Torvalds [Sun, 8 Jul 2007 23:32:17 +0000 (16:32 -0700)]
Linux 2.6.22

Woo-hoo. I'm sure somebody will report a "this doesn't compile, and
I have a new root exploit" five minutes after release, but it still
feels good ;)

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoMerge master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6
Linus Torvalds [Sun, 8 Jul 2007 19:14:27 +0000 (12:14 -0700)]
Merge master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6:
  qd65xx: fix PIO mode selection
  sis5513: adding PCI-ID

17 years agoFix permission checking for the new utimensat() system call
Linus Torvalds [Sun, 8 Jul 2007 19:02:55 +0000 (12:02 -0700)]
Fix permission checking for the new utimensat() system call

Commit 1c710c896eb461895d3c399e15bb5f20b39c9073 added the utimensat()
system call, but didn't handle the case of checking for the writability
of the target right, when the target was a file descriptor, not a
filename.

We cannot use vfs_permission(MAY_WRITE) for that case, and need to
simply check whether the file descriptor is writable.  The oops from
using the wrong function was noticed and narrowed down by Markus
Trippelsdorf.

Cc: Ulrich Drepper <drepper@redhat.com>
Cc: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Al Viro <viro@ftp.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agomm: double mark_page_accessed() in read_cache_page_async()
Peter Zijlstra [Sun, 8 Jul 2007 08:13:06 +0000 (01:13 -0700)]
mm: double mark_page_accessed() in read_cache_page_async()

Fix a post-2.6.21 regression.

read_cache_page_async() has two invocations of mark_page_accessed() which will
launch pages right onto the active list.

Remove the first one, keeping the latter one.  This avoids marking unwanted
pages active (in the retry loop).

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoqd65xx: fix PIO mode selection
Bartlomiej Zolnierkiewicz [Sun, 8 Jul 2007 13:21:58 +0000 (15:21 +0200)]
qd65xx: fix PIO mode selection

PIO4 is a maximum PIO mode supported by a driver.  Using "255" as a max_mode
argument to ide_get_best_pio_mode() could result in wrong timings being used
by a driver (for "pio" equal to 5) or OOPS (for "pio" values > 5 && < 255).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Reviewed-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
17 years agosis5513: adding PCI-ID
Uwe Koziolek [Sun, 8 Jul 2007 13:21:58 +0000 (15:21 +0200)]
sis5513: adding PCI-ID

The SiS966 has one additional PCI-ID 1180.

If the chipset is using this PCI-ID, the primary channel is connected to the
first PATA-port. The secondary channel is connected to SATA-ports in IDE
emulation mode.  The legacy IO-ports are used.

The including of the PCI-ID into pata_sis is not sufficient, because the legacy
driver in drivers/ide is initialized before pata_sis.

Signed-off-by: Uwe Koziolek <uwe.koziolek@gmx.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
17 years agoDLM must depend on SYSFS
Adrian Bunk [Sat, 7 Jul 2007 04:14:02 +0000 (06:14 +0200)]
DLM must depend on SYSFS

The dependency of DLM on SYSFS got lost in
commit 6ed7257b46709e87d79ac2b6b819b7e0c9184998 resulting in the
following compile error with CONFIG_DLM=y, CONFIG_SYSFS=n:

<--  snip  -->

...
  LD      .tmp_vmlinux1
fs/built-in.o: In function `dlm_lockspace_init':
/home/bunk/linux/kernel-2.6/linux-2.6.22-rc6-mm1/fs/dlm/lockspace.c:231: undefined reference to `kernel_subsys'
fs/built-in.o: In function `configfs_init':
/home/bunk/linux/kernel-2.6/linux-2.6.22-rc6-mm1/fs/configfs/mount.c:143: undefined reference to `kernel_subsys'
make[1]: *** [.tmp_vmlinux1] Error 1

<--  snip  -->

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoClean up E7520/7320/7525 quirk printk.
Dave Jones [Fri, 6 Jul 2007 18:59:43 +0000 (14:59 -0400)]
Clean up E7520/7320/7525 quirk printk.

The printk level in this printk is bogus, as the previous printk
didn't have a terminating \n resulting in ..

Intel E7520/7320/7525 detected.<6>Disabling irq balancing and affinity

It also never printed a \n at all in the case where we didn't do
the quirk.

Change it to only make noise if it actually does something useful.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoinclude/linux/kallsyms.h must #include <linux/errno.h>
Adrian Bunk [Fri, 6 Jul 2007 22:54:09 +0000 (00:54 +0200)]
include/linux/kallsyms.h must #include <linux/errno.h>

This patch fixes the following 2.6.22 regression with CONFIG_KALLSYMS=n:

<--  snip  -->

...
  CC      arch/m32r/kernel/traps.o
In file included from /home/bunk/linux/kernel-2.6/linux-2.6.22-rc6-mm1/arch/m32r/kernel/traps.c:14:
/home/bunk/linux/kernel-2.6/linux-2.6.22-rc6-mm1/include/linux/kallsyms.h: In function 'lookup_symbol_name':
/home/bunk/linux/kernel-2.6/linux-2.6.22-rc6-mm1/include/linux/kallsyms.h:66: error: 'ERANGE' undeclared (first use in this function)
/home/bunk/linux/kernel-2.6/linux-2.6.22-rc6-mm1/include/linux/kallsyms.h:66: error: (Each undeclared identifier is reported only once
/home/bunk/linux/kernel-2.6/linux-2.6.22-rc6-mm1/include/linux/kallsyms.h:66: error: for each function it appears in.)
/home/bunk/linux/kernel-2.6/linux-2.6.22-rc6-mm1/include/linux/kallsyms.h: In function 'lookup_symbol_attrs':
/home/bunk/linux/kernel-2.6/linux-2.6.22-rc6-mm1/include/linux/kallsyms.h:71: error: 'ERANGE' undeclared (first use in this function)
make[2]: *** [arch/m32r/kernel/traps.o] Error 1

<--  snip  -->

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoFix use-after-free oops in Bluetooth HID.
David Woodhouse [Sat, 7 Jul 2007 18:58:39 +0000 (14:58 -0400)]
Fix use-after-free oops in Bluetooth HID.

When cleaning up HIDP sessions, we currently close the ACL connection
before deregistering the input device. Closing the ACL connection
schedules a workqueue to remove the associated objects from sysfs, but
the input device still refers to them -- and if the workqueue happens to
run before the input device removal, the kernel will oops when trying to
look up PHYSDEVPATH for the removed input device.

Fix this by deregistering the input device before closing the
connections.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoslub: remove useless EXPORT_SYMBOL
Christoph Lameter [Fri, 6 Jul 2007 18:17:32 +0000 (11:17 -0700)]
slub: remove useless EXPORT_SYMBOL

kmem_cache_open is static. EXPORT_SYMBOL was leftover from some earlier
time period where kmem_cache_open was usable outside of slub.

(Fixes powerpc build error)

Signed-off-by: Chrsitoph Lameter <clameter@sgi.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoMAINTAINERS new kernel janitors ml
maximilian attems [Fri, 6 Jul 2007 18:17:32 +0000 (11:17 -0700)]
MAINTAINERS new kernel janitors ml

davem kindly moved the list from osdl to vger.

Signed-of-by: maximilian attems <max@stro.at>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoGEODE: reboot fixup for geode machines with CS5536 boards
Andres Salomon [Fri, 6 Jul 2007 18:17:30 +0000 (11:17 -0700)]
GEODE: reboot fixup for geode machines with CS5536 boards

Writing to MSR 0x51400017 forces a hard reset on CS5536-based machines,
this has the reboot fixup do just that if such a board is detected.

Acked-by: Jordan Crouse <jordan.crouse@amd.com>
Signed-off-by: Andres Salomon <dilinger@debian.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoMerge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Fri, 6 Jul 2007 17:30:12 +0000 (10:30 -0700)]
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
  [NETPOLL]: Fixups for 'fix soft lockup when removing module'
  [NET]: net/core/netevent.c should #include <net/netevent.h>
  [NETFILTER]: nf_conntrack_h323: add checking of out-of-range on choices' index values
  [NET] skbuff: remove export of static symbol
  SCTP: Add scope_id validation for link-local binds
  SCTP: Check to make sure file is valid before setting timeout
  SCTP: Fix thinko in sctp_copy_laddrs()

17 years agoMerge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
Linus Torvalds [Fri, 6 Jul 2007 17:29:33 +0000 (10:29 -0700)]
Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  [MIPS] Fix scheduling latency issue on 24K, 34K and 74K cores
  [MIPS] Add macros to encode processor revisions.
  [MIPS] RM7000: Enable ICACHE_REFILLS_WORKAROUND_WAR.
  [MIPS] SMTC: Fix cut'n'paste bug in Kconfig.debug
  [MIPS] Change libgcc-style functions from lib-y to obj-y
  [MIPS] Fix timer/performance interrupt detection
  [MIPS] AP/SP: Avoid triggering the 34K E125 performance issue
  [MIPS] 64-bit TO_PHYS_MASK macro for RM9000 processors

17 years agomm: fixup /proc/vmstat output
Peter Zijlstra [Fri, 6 Jul 2007 11:35:34 +0000 (13:35 +0200)]
mm: fixup /proc/vmstat output

Line up the vmstat_text with zone_stat_item

enum zone_stat_item {
/* First 128 byte cacheline (assuming 64 bit words) */
NR_FREE_PAGES,
NR_INACTIVE,
NR_ACTIVE,

We current have nr_active and nr_inactive reversed.

[ "OK with patch, though using initializers canbe handy to prevent such
   things in future:

static const char * const vmstat_text[] = {
[NR_FREE_PAGES] = "nr_free_pages",
..."
 - Alexey ]

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agopotential compiler error, irqfunc caller sites update
Yoann Padioleau [Fri, 6 Jul 2007 09:39:56 +0000 (02:39 -0700)]
potential compiler error, irqfunc caller sites update

In 7d12e780e003f93433d49ce78cfedf4b4c52adc5 David Howells performed
this evolution:
 "IRQ: Maintain regs pointer globally rather than passing to IRQ handlers"

He correctly updated many of the function definitions that were using this
extra regs pointer parameter but forgot to update some caller sites of
those functions.  The reason the modifications was not properly done on all
drivers is that some drivers were rarely compiled because they are for
AMIGA, or that some code sites were inside #ifdefs where the option is not
set or inside #if 0.

Here is the semantic patch that found the occurences
and fixed the problem.

@ rule1 @
identifier fn;
identifier irq, dev_id;
typedef irqreturn_t;
@@

static irqreturn_t fn(int irq, void *dev_id)
{
   ...
}

@@
identifier rule1.fn;
expression E1, E2, E3;
@@

 fn(E1, E2
-   ,E3
   )

Signed-off-by: Yoann Padioleau <padator@wanadoo.fr>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoi386: es7000 build breakage fix
Vivek Goyal [Fri, 6 Jul 2007 09:39:55 +0000 (02:39 -0700)]
i386: es7000 build breakage fix

o Commit 1833d6bc72893265f22addd79cf52e6987496e0f broke the build if
  compiled with CONFIG_ES7000=y and CONFIG_X86_GENERICARCH=n

arch/i386/kernel/built-in.o(.init.text+0x4fa9): In function `acpi_parse_madt':
: undefined reference to `acpi_madt_oem_check'
arch/i386/kernel/built-in.o(.init.text+0x7406): In function `smp_read_mpc':
: undefined reference to `mps_oem_check'
arch/i386/kernel/built-in.o(.init.text+0x8990): In function
`connect_bsp_APIC':
: undefined reference to `enable_apic_mode'
make: *** [.tmp_vmlinux1] Error 1

o Fix the build issue. Provided the definitions of missing functions.

o Don't have ES7000 machine. Only compile tested.

Cc: Len Brown <lenb@kernel.org>
Cc: Natalie Protasevich <protasnb@gmail.com>
Cc: Roland Dreier <rolandd@cisco.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoPNP SMCf010 quirk: work around Toshiba Portege 4000 ACPI issues
Bjorn Helgaas [Fri, 6 Jul 2007 09:39:54 +0000 (02:39 -0700)]
PNP SMCf010 quirk: work around Toshiba Portege 4000 ACPI issues

When we enable the SMCf010 IR device, the Toshiba Portege 4000 BIOS claims
the device is working, but it really isn't configured correctly.  The BIOS
*will* configure it, but only if we call _SRS after (1) reversing the order
of the SIR and FIR I/O port regions and (2) changing the IRQ from
active-high to active-low.

This patch addresses the 2.6.22 regression:
    "no irda0 interface (2.6.21 was OK), smsc does not find chip"

I tested this on a Portege 4000.  The smsc-ircc2 driver correctly detects
the device, and "irattach irda0 -s && irdadump" shows transmitted and
received packets.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Andrey Borzenkov <arvidjaar@mail.ru>
Cc: Samuel Ortiz <samuel@sortiz.org>
Cc: "Linus Walleij (LD/EAB)" <linus.walleij@ericsson.com>
Cc: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Cc: Adam Belay <ambx1@neo.rr.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agofix logic error in ipc compat semctl()
Alexander Graf [Fri, 6 Jul 2007 09:39:53 +0000 (02:39 -0700)]
fix logic error in ipc compat semctl()

When calling a semctl(IPC_STAT) without IPC_64 the check if the memory is
unevaluated.  This patch fixes this.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agox86_64: fix headers_install
David Woodhouse [Fri, 6 Jul 2007 09:39:52 +0000 (02:39 -0700)]
x86_64: fix headers_install

A bug in headers_install for ARCH=x86_64 yields an asm/ directory full of
files all of which are using the same #ifdef guard, "__ASM_STUB_" with no
postfix.  So the second and later asm files #included in the same C file
(often through standard headers like ioctl.h) yields no symbols.

Strangeness with the Ubuntu 'tell me if I support something that's not
explcitly mentioned in POSIX, and I'll strip it out' shell, I believe.

We don't need the 'export' but we do need a semicolon at the end of the
FNAME line:

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Rob Landley <rob@landley.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoMTRR: Fix race causing set_mtrr to go into infinite loop
Loic Prylli [Fri, 6 Jul 2007 09:39:52 +0000 (02:39 -0700)]
MTRR: Fix race causing set_mtrr to go into infinite loop

Processors synchronization in set_mtrr requires the .gate field to be set
after .count field is properly initialized.  Without an explicit barrier,
the compiler was reordering those memory stores.  That was sometimes
causing a processor (in ipi_handler) to see the .gate change and decrement
.count before the latter is set by set_mtrr() (which then hangs in a
infinite loop with irqs disabled).

Signed-off-by: Loic Prylli <loic@myri.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoi386: fix regression, endless loop in ptrace singlestep over an int80
Jason Wessel [Fri, 6 Jul 2007 09:39:50 +0000 (02:39 -0700)]
i386: fix regression, endless loop in ptrace singlestep over an int80

The commit 635cf99a80f4ebee59d70eb64bb85ce829e4591f introduced a
regression.  Executing a ptrace single step after certain int80
accesses will infinitely loop and never advance the PC.

The TIF_SINGLESTEP check should be done on the return from the syscall
and not before it.

I loops on each single step on the pop right after the int80 which writes out
to the console.  At that point you can issue as many single steps as you want
and it will not advance any further.

The test case is below:

/* Test whether singlestep through an int80 syscall works.
 */
#define _GNU_SOURCE
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ptrace.h>
#include <sys/wait.h>
#include <sys/mman.h>
#include <asm/user.h>
#include <string.h>

static int child, status;
static struct user_regs_struct regs;

static void do_child()
{
char str[80] = "child: int80 test\n";

ptrace(PTRACE_TRACEME, 0, 0, 0);
kill(getpid(), SIGUSR1);
write(fileno(stdout),str,strlen(str));
asm ("int $0x80" : : "a" (20)); /* getpid */
}

static void do_parent()
{
unsigned long eip, expected = 0;
again:
waitpid(child, &status, 0);
if (WIFEXITED(status) || WIFSIGNALED(status))
return;

if (WIFSTOPPED(status)) {
ptrace(PTRACE_GETREGS, child, 0, &regs);
eip = regs.eip;
if (expected)
fprintf(stderr, "child stop @ %08lx, expected %08lx %s\n",
eip, expected,
eip == expected ? "" : " <== ERROR");

if (*(unsigned short *)eip == 0x80cd) {
fprintf(stderr, "int 0x80 at %08x\n", (unsigned int)eip);
expected = eip + 2;
} else
expected = 0;

ptrace(PTRACE_SINGLESTEP, child, NULL, NULL);
}
goto again;
}

int main(int argc, char * const argv[])
{
child = fork();
if (child)
do_parent();
else
do_child();
return 0;
}

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: <stable@kernel.org>
Cc: Chuck Ebbert <76306.1226@compuserve.com>
Acked-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoFix elf_core_dump() when writing arch specific notes (spu coredumps)
Michael Ellerman [Fri, 6 Jul 2007 09:39:49 +0000 (02:39 -0700)]
Fix elf_core_dump() when writing arch specific notes (spu coredumps)

elf_core_dump() supports dumping arch specific ELF notes, via the #define
ELF_CORE_WRITE_EXTRA_NOTES.  Currently the only user of this is the powerpc
spu coredump code.

There is a bug in the handling of foffset WRT the arch notes, which causes
us to erroneously increment foffset by the size of the arch notes, leaving
a block of zeroes in the file, and causing all subsequent data in the file
to be at <supposed position> + <arch note size>.  eg:

  LOAD  0x050000 0x00100000 0x00000000 0x20000 0x20000 R E 0x10000

Tells us we should have a chunk of data at 0x50000.  The truth is the data
is at 0x90dbc = 0x50000 + 0x40dbc (the size of the arch notes).

This bug prevents gdb from reading the core file correctly.

The simplest fix is to simply remember the size of the arch notes, and add
it to foffset after we've written the arch notes.  The only drawback is
that if the arch code doesn't write as many bytes as it said it would, we
end up with a broken core dump again.  For now I think that's a reasonable
requirement.

Tested on a Cell blade, gdb no longer complains about the core file being
bogus.

While I'm here I should point out that the spu coredump code does not work
if we're dumping to a pipe - we'll have to wait for 23 to fix that.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[MIPS] Fix scheduling latency issue on 24K, 34K and 74K cores
Ralf Baechle [Wed, 20 Jun 2007 23:22:34 +0000 (00:22 +0100)]
[MIPS] Fix scheduling latency issue on 24K, 34K and 74K cores

The idle loop goes to sleep using the WAIT instruction if !need_resched().
This has is suffering from from a race condition that if if just after
need_resched has returned 0 an interrupt might set TIF_NEED_RESCHED but
we've just completed the test so go to sleep anyway.  This would be
trivial to fix by just disabling interrupts during that sequence as in:

        local_irq_disable();
        if (!need_resched())
                __asm__("wait");
        local_irq_enable();

but the processor architecture leaves it undefined if a processor calling
WAIT with interrupts disabled will ever restart its pipeline and indeed
some processors have made use of the freedom provided by the architecture
definition.  This has been resolved and the Config7.WII bit indicates that
the use of WAIT is safe on 24K, 24KE and 34K cores.  It also is safe on
74K starting revision 2.1.0 so enable the use of WAIT with interrupts
disabled for 74K based on a c0_prid of at least that.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] Add macros to encode processor revisions.
Ralf Baechle [Fri, 6 Jul 2007 13:40:05 +0000 (14:40 +0100)]
[MIPS] Add macros to encode processor revisions.

Older processors used to encode processor version and revision in two
4-bit bitfields, the 4K seems to simply count up and even newer MTI cores
have switched to use the 8-bits as 3:3:2 bitfield with the last field as
the patch number.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>