Commit graph

76129 commits

Author SHA1 Message Date
Bartlomiej Zolnierkiewicz
6a2144146a ide: CPU endianness doesn't matter for special_t
special_t is used only internally by the IDE subsystem (it isn't
related to hardware registers and isn't exported to the user-space).

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:11 +01:00
Bartlomiej Zolnierkiewicz
918337a853 ide-floppy: remove dead code
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:11 +01:00
Bartlomiej Zolnierkiewicz
29ed2a5f8c ide: remove REQ_TYPE_ATA_TASK
Based on the earlier work by Tejun Heo.

All users are gone so we can finally remove it.

Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:11 +01:00
Bartlomiej Zolnierkiewicz
14b89ef981 ide: switch ide_task_ioctl() to use REQ_TYPE_ATA_TASKFILE requests
Based on the earlier work by Tejun Heo.

There should be no functionality changes caused by this patch.

Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:11 +01:00
Bartlomiej Zolnierkiewicz
813a0eb233 ide: switch idedisk_prepare_flush() to use REQ_TYPE_ATA_TASKFILE requests
Based on the earlier work by Tejun Heo.

There should be no functionality changes caused by this patch.

Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:10 +01:00
Bartlomiej Zolnierkiewicz
1f2564b8b5 ide: extend timeout for REQ_TYPE_ATA_{CMD,TASK} requests
Extend timeout for REQ_TYPE_ATA_{CMD,TASK} requests from WAIT_CMD (10sec)
to WAIT_WORSTCASE (30sec, already used for REQ_TYPE_ATA_TASKFILE).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:10 +01:00
Bartlomiej Zolnierkiewicz
a3bbb9d882 ide: remove unnecessary writes to HOB taskfile registers
* Set taskfile flags for REQ_TYPE_ATA_TASKFILE requests before
  adding the request to the queue.

* Cleanup execute_drive_cmd().

* Remove unnecessary writes to HOB taskfile registers when using
  LBA48 disk for the following cases:

  - Power Management requests
    (WIN_FLUSH_CACHE[_EXT], WIN_STANDBYNOW1, WIN_IDLEIMMEDIATE commands)

  - special commands (WIN_SPECIFY, WIN_RESTORE, WIN_SETMULT)

  - Host Protected Area support (WIN_READ_NATIVE_MAX, WIN_SET_MAX)

  - /proc/ide/ SMART support (WIN_SMART with SMART_ENABLE,
    SMART_READ_VALUES and SMART_READ_THRESHOLDS subcommands)

  - write cache enabling/disabling in ide-disk
    (WIN_SETFEATURES with SETFEATURES_{EN,DIS}_WCACHE)

  - write cache flushing in ide-disk (WIN_FLUSH_CACHE[_EXT])

  - acoustic management in ide-disk
    (WIN_SETFEATURES with SETFEATURES_{EN,DIS}_AAM)

  - door (un)locking in ide-disk (WIN_DOORLOCK, WIN_DOORUNLOCK)

  - /proc/ide/hd?/identify support (WIN_IDENTIFY)

  - ACPI _GTF taskfiles

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:10 +01:00
Bartlomiej Zolnierkiewicz
868e672ac8 ide: use IDE_TFLAG_LBA48 for REQ_TYPE_ATA_TASKFILE requests
* Use IDE_TFLAG_LBA48 for REQ_TYPE_ATA_TASKFILE requests in ide_end_drive_cmd()
  to decide whether we need to read HOB taskfile registers.

* Update execute_drive_cmd() accordingly.

This is a preparation for the next patch which removes unnecessary writes to
HOB taskfile registers for some ATA commands.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:10 +01:00
Bartlomiej Zolnierkiewicz
807e35d695 ide: use ide_tf_load() in execute_drive_cmd()
* Add IDE_TFLAG_OUT_DEVICE taskfile flag to indicate the need of writing
  the Device register and handle it in ide_tf_load().

  Update ide_tf_load() and {do_rw,flagged}_taskfile() users accordingly.

* Use struct ide_taskfile and ide_tf_load() in execute_drive_cmd().

* Make the debugging code dump all taskfile registers for both
  REQ_ATA_TYPE_{CMD,TASK} requests and move it to ide_tf_load()
  so it also covers REQ_ATA_TYPE_TASKFILE requests.

There should be no functionality changes caused by this patch
(unless DEBUG is defined).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:10 +01:00
Bartlomiej Zolnierkiewicz
54688aa372 ide: remove ide_cmd() helper
* Remove ide_cmd() helper.

* Clear nIEN and call SELECT_MASK() before writing taskfile registers.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:09 +01:00
Bartlomiej Zolnierkiewicz
21d535c913 ide: execute_drive_cmd() cleanup
* Rename 'args' variable in 'if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE)'
  block to 'task'.

* execute_drive_cmd() is used only for REQ_TYPE_ATA_{CMD,TASK,TASKFILE} so
  we can move the common code out from 'if (rq->cmd_type == REQ_TYPE_ATA_CMD)'
  and 'if (rq->cmd_type == REQ_TYPE_ATA_TASK)' blocks.

There should be no functionality changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:09 +01:00
Bartlomiej Zolnierkiewicz
6dd87233bc ide: fix registers loading order for IDE_NSECTOR_REG in execute_drive_cmd()
Move loading of IDE_NSECTOR_REG from ide_cmd() to execute_drive_cmd()
(load the IDE_NSECTOR_REG just after IDE_FEATURE_REG).

This also allows us to drop 'nsect' argument from ide_cmd() and simplify
execute_drive_cmd() code for REQ_TYPE_ATA_CMD case a bit.

It shouldn't affect anything (just a usual paranoia to separate changes
which change the way in which hardware is accessed from code cleanups).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:09 +01:00
Bartlomiej Zolnierkiewicz
46f26c362d ide: fix registers loading order for WIN_SMART in execute_drive_cmd()
Fix registers loading order for REQ_TYPE_ATA_CMD request with WIN_SMART
command in execute_drive_cmd() (load IDE_FEATURE_REG and IDE_SECTOR_REG
before loading IDE_LCYL_REG and IDE_HCYL_REG).

It shouldn't affect anything (just a usual paranoia to separate changes
which change the way in which hardware is accessed from code cleanups).

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:09 +01:00
Bartlomiej Zolnierkiewicz
d3bb03438c ide-tape: remove dead USE_IOTRACE code
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:08 +01:00
Bartlomiej Zolnierkiewicz
4ee06b7e67 ide: remove stale ide.h "configuration options"
Remove stale ide.h "configuration options":

* INITIAL_MULT_COUNT - always defined to 0

* SUPPORT_SLOW_DATA_PORTS - unused

* OK_TO_RESET_CONTROLLER - always defined to 1

* DISABLE_IRQ_NOSYNC - always defined to 0

Leave SUPPORT_VLB_SYNC (defined to 0 for CRIS and FRV, otherwise to 1)
for now but disallow overriding it by <asm/ide.h>.

There should be no functionality changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:08 +01:00
Bartlomiej Zolnierkiewicz
f1ca6d37f9 ide: remove CONFIG_IDEPCI_SHARE_IRQ config option
We can safely remove CONFIG_IDEPCI_SHARE_IRQ and always support
PCI IRQ sharing.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:08 +01:00
Bartlomiej Zolnierkiewicz
7b5da4be37 ide: remove IRQF_DISABLED from IRQ flags for IDE IRQ handler
IRQF_DISABLED is not needed because the first thing that ide_intr()
(IDE IRQ handler) does is calling spin_lock_irqsave() which disables
local IRQs (IRQ unmasking is later handled by drive->unmask).

kernel/irq/handle.c:

irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action)
...
	if (!(action->flags & IRQF_DISABLED))
		local_irq_enable_in_hardirq();

	do {
		ret = action->handler(irq, action->dev_id);
		if (ret == IRQ_HANDLED)
			status |= action->flags;
		retval |= ret;
		action = action->next;
	} while (action);
...

drivers/ide/ide-io.c:

irqreturn_t ide_intr (int irq, void *dev_id)
...
	spin_lock_irqsave(&ide_lock, flags);
...
	spin_unlock(&ide_lock);
...
	if (drive->unmask)
		local_irq_enable_in_hardirq();
...

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:08 +01:00
Bartlomiej Zolnierkiewicz
d26805fd02 ide-pmac: fix pmac_ide_init_hwif_ports()
* pmac_ide_init_hwif_ports() can be called by ide_init_hwif_ports()
  (through ppc_ide_md.ide_init_hwif hook) for non IDE PMAC interfaces.
  If this is the case the hw->io_ports[] should be already setup by
  ide_init_hwif_ports()->ide_std_init_ports() so remove redundant code
  from pmac_ide_init_hwif_ports().

  As side-effect this change fixes ctl_addr == 0 special handling in
  ide_init_hwif_ports().

* Fix misleading comment while at it.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:07 +01:00
Bartlomiej Zolnierkiewicz
74095a91ed ide: use do_rw_taskfile() in flagged_taskfile()
Based on the earlier work by Tejun Heo.

* Move setting IDE_TFLAG_LBA48 taskfile flag from do_rw_taskfile()
  function to the callers.

* Add IDE_TFLAG_FLAGGED taskfile flag for flagged taskfiles coming
  from ide_taskfile_ioctl().  Check it instead of ->tf_out_flags.all.

* Add IDE_TFLAG_OUT_DATA taskfile flag to indicate the need to load
  IDE data register in ide_tf_load().

* Add IDE_TFLAG_OUT_* taskfile flags to indicate the need to load
  particular IDE taskfile registers in ide_tf_load().

* Update do_rw_taskfile() and ide_tf_load() users to set respective
  IDE_TFLAG_OUT_* taksfile flags.

* Add task_dma_ok() helper.

* Use IDE_TFLAG_FLAGGED taskfile flag to select HIHI mask in ide_tf_load().

* Use do_rw_taskfile() in flagged_taskfile().

* Remove no longer needed 'tf_out_flags' field from ide_task_t.

There should be no functionality changes caused by this patch.

Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:07 +01:00
Bartlomiej Zolnierkiewicz
9a3c49be5c ide: add ide_no_data_taskfile() helper
* Add ide_no_data_taskfile() helper and convert ide_raw_taskfile() w/ NO DATA
  protocol users to use it instead.

* Set ->data_phase explicitly in ide_no_data_taskfile()
  (TASKFILE_NO_DATA is defined as 0x0000).

* Unexport task_no_data_intr().

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:07 +01:00
Bartlomiej Zolnierkiewicz
9e42237f26 ide: add ide_tf_load() helper
Based on the earlier work by Tejun Heo.

* Add 'tf_flags' field (for taskfile flags) to ide_task_t.

* Add IDE_TFLAG_LBA48 taskfile flag for LBA48 taskfiles.

* Add IDE_TFLAG_NO_SELECT_MASK taskfile flag for __ide_do_rw_disk()
  which doesn't use SELECT_MASK() (looks like a bug but it requires
  some more investigation).

* Split off ide_tf_load() helper from do_rw_taskfile().

* Convert __ide_do_rw_disk() to use ide_tf_load().

There should be no functionality changes caused by this patch.

Cc: Tejun Heo <htejun@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:07 +01:00
Bartlomiej Zolnierkiewicz
2bd06b23e2 ide-disk: use struct ide_taskfile in __ide_do_rw_disk()
Based on the earlier work by Tejun Heo.

There should be no functionality changes caused by this patch.

Cc: Tejun Heo <htejun@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:06 +01:00
Bartlomiej Zolnierkiewicz
d00e42dd26 ide-disk: fix taskfile registers loading order in __ide_do_rw_disk()
Load IDE_SECTOR_REG after IDE_FEATURE_REG and IDE_NSECTOR_REG when using CHS.

This patch is basically a preparation for the next one which converts
__ide_do_rw_disk() to use struct ide_taskfile.

It shouldn't affect anything (just a usual paranoia to separate changes
which change the way in which hardware is accessed from code cleanups).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:06 +01:00
Bartlomiej Zolnierkiewicz
7a3b7512d0 ide-disk: merge LBA28 and LBA48 Host Protected Area support code (take 2)
* Merge idedisk_{read_native,set}_max_address_ext() into
  idedisk_{read_native,set}_max_address().

v2:
* Remove LBA48 code leftover from idedisk_read_native_max_address()
  ('high' variable initialization).  (Noticed by Sergei).

There should be no functionality changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:06 +01:00
Bartlomiej Zolnierkiewicz
650d841d9e ide: add struct ide_taskfile (take 2)
* Don't set write-only ide_task_t.hobRegister[6] and ide_task_t.hobRegister[7]
  in idedisk_set_max_address_ext().

* Add struct ide_taskfile and use it in ide_task_t instead of tfRegister[]
  and hobRegister[].

* Remove no longer needed IDE_CONTROL_OFFSET_HOB define.

* Add #ifndef/#endif __KERNEL__ around definitions of {task,hob}_struct_t.

While at it:

* Use ATA_LBA define for LBA bit (0x40) as suggested by Tejun Heo.

v2:
* Add missing newlines. (Noticed by Sergei)

* Use ~ATA_LBA instead of 0xBF. (Noticed by Sergei)

* Use unnamed unions for error/feature and status/command.
  (Suggested by Sergei).

There should be no functionality changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:06 +01:00
Bartlomiej Zolnierkiewicz
cd2a2d9697 ide: remove task_ioreg_t typedef (take 2)
Remove task_ioreg_t typedef from the kernel code (but leave it
in <linux/hdreg.h> for #ifndef/#endif __KERNEL__ case).

While at it also move sata_ioreg_t typedef under #ifndef/#endif __KERNEL__.

v2:
Remove name of the second parameter from ide_execute_command() declaration.
(Noticed by Sergei).

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:06 +01:00
Bartlomiej Zolnierkiewicz
1c029fd658 ide: remove ->dma_master field from ide_hwif_t (take 5)
* Convert cmd64x, hpt366 and pdc202xx_old host drivers to use
  pci_resource_start(hwif->pci_dev, 4) instead of hwif->dma_master.

* Remove no longer needed ->dma_master field from ide_hwif_t.

v2:
* Use the more readable 'hwif->dma_base - (hwif->channel * 8)' instead of
  pci_resource_start(hwif->pci_dev, 4).

v3:
* Use hwif->extra_base in hpt366/pdc20xx_old + some cosmetic fixups over v2
  (suggested by Sergei).

v4:
* Correct offsets in hpt3xxn_set_clock().

v5:
* Use hwif->extra_base in hpt366 for _real_ this time. (Noticed by Sergei)

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:05 +01:00
Sergei Shtylyov
866664d79f hpt366: merge set_dma_mode() methods
Group the array of pointers to the timing tables with the timing register masks
which allows us to merge HPT36x/HPT37x set_dma_mode() methods into one.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:05 +01:00
Sergei Shtylyov
a488f34e0d hpt366: kill set_dma_mode() method wrapper
There's no reason to keep the set_dma_mode() method wrapper for two different
chip families, so get rid of it...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:05 +01:00
Sergei Shtylyov
ceb1b2c583 hpt366: change timing register masks
Since PIO autotuning is now done always, there's no need anymore to program
the taskfile timings also on DMA modes, so change the IDE timing register
masks accordingly, "inverting the polarity" of the masks while at it...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:04 +01:00
Aristeu Rozanski
b5e1a4e286 ide-io: set REQ_FAILED when drive is dead
Currently it's possible to ide-cd to set an incorrect blocksize by
reading garbage if the drive is dead:

ide_cd_probe()
 -> cdrom_read_toc()
     -> cdrom_read_capacity()
         -> cdrom_queue_packet_command()
             -> ide_do_drive_cmd()
                 -> ide_do_request()
                     -> start_request()

on start_request():

        /* bail early if we've exceeded max_failures */
        if (drive->max_failures && (drive->failures > drive->max_failures)) {
                goto kill_rq;
        }
(...)
kill_rq:
        ide_kill_rq(drive, rq);
        return ide_stopped;

ide_kill_rq() and the next calls won't set REQ_FAILED on rq->cmd_flags and thus
cdrom_queue_packet_command() won't return an error. then:

        stat = cdrom_queue_packet_command(drive, &req);
        if (stat == 0) {
                *capacity = 1 + be32_to_cpu(capbuf.lba);
                *sectors_per_frame =
                        be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS;
        }

cdrom_read_capacity() ends believing capbuf is valid but in fact it's just
uninitialized data. back to cdrom_read_toc():

        /* Try to get the total cdrom capacity and sector size. */
        stat = cdrom_read_capacity(drive, &toc->capacity, &sectors_per_frame,
                                   sense);
        if (stat)
                toc->capacity = 0x1fffff;

        set_capacity(info->disk, toc->capacity * sectors_per_frame);
        /* Save a private copy of te TOC capacity for error handling */
        drive->probed_capacity = toc->capacity * sectors_per_frame;

        blk_queue_hardsect_size(drive->queue,
                                sectors_per_frame << SECTOR_BITS);

that will set drive->queue->hardsect_size to be the random value.
hardsect_size is used to calculate inode->i_blkbits. later on, on a read
path:

void create_empty_buffers(struct page *page,
                        unsigned long blocksize, unsigned long b_state)
{       
        struct buffer_head *bh, *head, *tail;

        head = alloc_page_buffers(page, blocksize, 1);
        bh = head;
        do {    
                bh->b_state |= b_state;
                tail = bh;
                bh = bh->b_this_page;
        } while (bh);
        tail->b_this_page = head;

alloc_page_buffers() will return NULL if blocksize > 4096. blocksize is
calculed based on inode->i_blkbits. that will trigger a null
dereference on create_empty_buffers().

Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25 22:17:04 +01:00
Linus Torvalds
b47711bfbc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6:
  selinux: make mls_compute_sid always polyinstantiate
  security/selinux: constify function pointer tables and fields
  security: add a secctx_to_secid() hook
  security: call security_file_permission from rw_verify_area
  security: remove security_sb_post_mountroot hook
  Security: remove security.h include from mm.h
  Security: remove security_file_mmap hook sparse-warnings (NULL as 0).
  Security: add get, set, and cloning of superblock security information
  security/selinux: Add missing "space"
2008-01-25 08:44:29 -08:00
Linus Torvalds
7556afa0e0 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6:
  [AVR32] extint: Set initial irq type to low level
  [AVR32] extint: change set_irq_type() handling
  [AVR32] NMI debugging
  [AVR32] constify function pointer tables
  [AVR32] ATNGW100: Update defconfig
  [AVR32] ATSTK1002: Update defconfig
  [AVR32] Kconfig: Choose daughterboard instead of CPU
  [AVR32] Add support for ATSTK1003 and ATSTK1004
  [AVR32] Clean up external DAC setup code
  [AVR32] ATSTK1000: Move gpio-leds setup to setup.c
  [AVR32] Add support for AT32AP7001 and AT32AP7002
  [AVR32] Provide more CPU information in /proc/cpuinfo and dmesg
  [AVR32] Oprofile support
  [AVR32] Include instrumentation menu
  Disable VGA text console for AVR32 architecture
  [AVR32] Enable debugging only when needed
  ptrace: Call arch_ptrace_attach() when request=PTRACE_TRACEME
  [AVR32] Remove redundant try_to_freeze() call from do_signal()
  [AVR32] Drop GFP_COMP for DMA memory allocations
2008-01-25 08:40:02 -08:00
Linus Torvalds
e07dd2ad30 Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw
* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw: (56 commits)
  [GFS2] Allow journal recovery on read-only mount
  [GFS2] Lockup on error
  [GFS2] Fix page_mkwrite truncation race path
  [GFS2] Fix typo
  [GFS2] Fix write alloc required shortcut calculation
  [GFS2] gfs2_alloc_required performance
  [GFS2] Remove unneeded i_spin
  [GFS2] Reduce inode size by moving i_alloc out of line
  [GFS2] Fix assert in log code
  [GFS2] Fix problems relating to execution of files on GFS2
  [GFS2] Initialize extent_list earlier
  [GFS2] Allow page migration for writeback and ordered pages
  [GFS2] Remove unused variable
  [GFS2] Fix log block mapper
  [GFS2] Minor correction
  [GFS2] Eliminate the no longer needed sd_statfs_mutex
  [GFS2] Incremental patch to fix compiler warning
  [GFS2] Function meta_read optimization
  [GFS2] Only fetch the dinode once in block_map
  [GFS2] Reorganize function gfs2_glmutex_lock
  ...
2008-01-25 08:39:18 -08:00
Linus Torvalds
eba0e319c1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (125 commits)
  [CRYPTO] twofish: Merge common glue code
  [CRYPTO] hifn_795x: Fixup container_of() usage
  [CRYPTO] cast6: inline bloat--
  [CRYPTO] api: Set default CRYPTO_MINALIGN to unsigned long long
  [CRYPTO] tcrypt: Make xcbc available as a standalone test
  [CRYPTO] xcbc: Remove bogus hash/cipher test
  [CRYPTO] xcbc: Fix algorithm leak when block size check fails
  [CRYPTO] tcrypt: Zero axbuf in the right function
  [CRYPTO] padlock: Only reset the key once for each CBC and ECB operation
  [CRYPTO] api: Include sched.h for cond_resched in scatterwalk.h
  [CRYPTO] salsa20-asm: Remove unnecessary dependency on CRYPTO_SALSA20
  [CRYPTO] tcrypt: Add select of AEAD
  [CRYPTO] salsa20: Add x86-64 assembly version
  [CRYPTO] salsa20_i586: Salsa20 stream cipher algorithm (i586 version)
  [CRYPTO] gcm: Introduce rfc4106
  [CRYPTO] api: Show async type
  [CRYPTO] chainiv: Avoid lock spinning where possible
  [CRYPTO] seqiv: Add select AEAD in Kconfig
  [CRYPTO] scatterwalk: Handle zero nbytes in scatterwalk_map_and_copy
  [CRYPTO] null: Allow setkey on digest_null 
  ...
2008-01-25 08:38:25 -08:00
Linus Torvalds
df8dc74e8a Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6
This can be broken down into these major areas:
 - Documentation updates (language translations and fixes, as
   well as kobject and kset documenatation updates.)
 - major kset/kobject/ktype rework and fixes.  This cleans up the
   kset and kobject and ktype relationship and architecture,
   making sense of things now, and good documenation and samples
   are provided for others to use.  Also the attributes for
   kobjects are much easier to handle now.  This cleaned up a LOT
   of code all through the kernel, making kobjects easier to use
   if you want to.
 - struct bus_type has been reworked to now handle the lifetime
   rules properly, as the kobject is properly dynamic.
 - struct driver has also been reworked, and now the lifetime
   issues are resolved.
 - the block subsystem has been converted to use struct device
   now, and not "raw" kobjects.  This patch has been in the -mm
   tree for over a year now, and finally all the issues are
   worked out with it.  Older distros now properly work with new
   kernels, and no userspace updates are needed at all.
 - nozomi driver is added.  This has also been in -mm for a long
   time, and many people have asked for it to go in.  It is now
   in good enough shape to do so.
 - lots of class_device conversions to use struct device instead.
   The tree is almost all cleaned up now, only SCSI and IB is the
   remaining code to fix up...

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6: (196 commits)
  Driver core: coding style fixes
  Kobject: fix coding style issues in kobject c files
  Kobject: fix coding style issues in kobject.h
  Driver core: fix coding style issues in device.h
  spi: use class iteration api
  scsi: use class iteration api
  rtc: use class iteration api
  power supply : use class iteration api
  ieee1394: use class iteration api
  Driver Core: add class iteration api
  Driver core: Cleanup get_device_parent() in device_add() and device_move()
  UIO: constify function pointer tables
  Driver Core: constify the name passed to platform_device_register_simple
  driver core: fix build with SYSFS=n
  sysfs: make SYSFS_DEPRECATED depend on SYSFS
  Driver core: use LIST_HEAD instead of call to INIT_LIST_HEAD in __init
  kobject: add sample code for how to use ksets/ktypes/kobjects
  kobject: add sample code for how to use kobjects in a simple manner.
  kobject: update the kobject/kset documentation
  kobject: remove old, outdated documentation.
  ...
2008-01-25 08:35:13 -08:00
Pekka Enberg
556a169dab slab: fix bootstrap on memoryless node
If the node we're booting on doesn't have memory, bootstrapping kmalloc()
caches resorts to fallback_alloc() which requires ->nodelists set for all
nodes.  Fix that by calling set_up_list3s() for CACHE_CACHE in
kmem_cache_init().

As kmem_getpages() is called with GFP_THISNODE set, this used to work before
because of breakage in 2.6.22 and before with GFP_THISNODE returning pages from
the wrong node if a node had no memory. So it may have worked accidentally and
in an unsafe manner because the pages would have been associated with the wrong
node which could trigger bug ons and locking troubles.

Tested-by: Mel Gorman <mel@csn.ul.ie>
Tested-by: Olaf Hering <olaf@aepfle.de>
Reviewed-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
[ With additional one-liner by Olaf Hering  - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-01-25 08:30:36 -08:00
Karsten Keil
eb36f4fc01 fix oops on rmmod capidrv
Fix overwriting the stack with the version string
(it is currently 10 bytes + zero) when unloading the
capidrv module. Safeguard against overwriting it
should the version string grow in the future.

Should fix Kernel Bug Tracker Bug 9696.

Signed-off-by: Gerd v. Egidy <gerd.von.egidy@intra2net.com>
Acked-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-01-25 08:26:10 -08:00
Abhijith Das
7bc5c414fe [GFS2] Allow journal recovery on read-only mount
This patch allows gfs2 to perform journal recovery even if it is mounted
read-only. Strictly speaking, a read-only mount should not be writing to
the filesystem, but we do this only to perform journal recovery. A
read-only mount will fail if we don't recover the dirty journal. Also,
when gfs2 is used as a root filesystem, it will be mounted read-only
before being mounted read-write during the boot sequence. A failed
read-only mount will panic the machine during bootup.

Signed-off-by: Abhijith Das <adas@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2008-01-25 08:21:22 +00:00
Bob Peterson
1b8177ec1e [GFS2] Lockup on error
I spotted this bug while I was digging around.  Looks like it could cause
a lockup in some rare error condition.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2008-01-25 08:21:04 +00:00
Steven Whitehouse
b7fe2e391e [GFS2] Fix page_mkwrite truncation race path
There was a bug in the truncation/invalidation race path for
->page_mkwrite for gfs2. It ought to return 0 so that the effect is the
same as if the page was truncated at any of the other points at which
the page_lock is dropped. This will result in the restart of the whole
page fault path. If it was due to a real truncation (as opposed to an
invalidate because we let a glock go) then the ->fault path will pick
that up when it gets called again.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2008-01-25 08:20:15 +00:00
Bob Peterson
3e5cd0877e [GFS2] Fix typo
This patch fixes a minor typo.  Surprisingly, it still compiled.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2008-01-25 08:19:51 +00:00
Steven Whitehouse
1af535727b [GFS2] Fix write alloc required shortcut calculation
The comparison was being made against the wrong quantity.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2008-01-25 08:19:28 +00:00
Bob Peterson
0522053519 [GFS2] gfs2_alloc_required performance
This is a small I/O performance enhancement to gfs2.  (Actually, it is a rework of
an earlier version I got wrong).  The idea here is to check if the write extends
past the last block in the file.  If so, the function can save itself a lot of
time and trouble because it knows an allocate will be required.  Benchmarks like
iozone should see better performance.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2008-01-25 08:19:03 +00:00
Bob Peterson
598278bd48 [GFS2] Remove unneeded i_spin
This patch removes a vestigial variable "i_spin" from the gfs2_inode
structure.  This not only saves us memory (>300000 of these in memory
for the oom test) it also saves us time because we don't have to
spend time initializing it (i.e. slightly better performance).

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2008-01-25 08:18:44 +00:00
Steven Whitehouse
6dbd822487 [GFS2] Reduce inode size by moving i_alloc out of line
It is possible to reduce the size of GFS2 inodes by taking the i_alloc
structure out of the gfs2_inode. This patch allocates the i_alloc
structure whenever its needed, and frees it afterward. This decreases
the amount of low memory we use at the expense of requiring a memory
allocation for each page or partial page that we write. A quick test
with postmark shows that the overhead is not measurable and I also note
that OCFS2 use the same approach.

In the future I'd like to solve the problem by shrinking down the size
of the members of the i_alloc structure, but for now, this reduces the
immediate problem of using too much low-memory on x86 and doesn't add
too much overhead.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2008-01-25 08:18:25 +00:00
Steven Whitehouse
ac39aadd04 [GFS2] Fix assert in log code
Although the values were all being calculated correctly, there was a
race in the assert due to the way it was using atomic variables. This
changes the value we assert on so that we get the same effect by testing
a different variable. This prevents the assert triggering when it shouldn't.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2008-01-25 08:18:03 +00:00
Steven Whitehouse
9656b2c14c [GFS2] Fix problems relating to execution of files on GFS2
This patch fixes a couple of problems which affected the execution of files
on GFS2. The first is that there was a corner case where inodes were not
always uptodate at the point at which permissions checks were being carried
out, this was resulting in refusal of execute permission, but only on the
first lookup, subsequent requests worked correctly. The second was a problem
relating to incorrect updating of file sizes which was introduced with the
write_begin/end code for GFS2 a little while back.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Cc: Abhijith Das <adas@redhat.com>
2008-01-25 08:17:31 +00:00
Bob Peterson
0811a127cb [GFS2] Initialize extent_list earlier
Here is a patch for the latest upstream GFS2 code:
The journal extent map needs to be initialized sooner than it
currently is.  Otherwise failed mount attempts (e.g. not enough
journals, etc.) may panic trying to access the uninitialized list.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2008-01-25 08:17:04 +00:00
Steven Whitehouse
e5d9dc278c [GFS2] Allow page migration for writeback and ordered pages
To improve performance on NUMA, we use the VM's standard page
migration for writeback and ordered pages. Probably we could
also do the same for journaled data, but that would need a
careful audit of the code, so will be the subject of a later
patch.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2008-01-25 08:16:41 +00:00