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* Task Control Groups: add cgroup_clone() interfacePaul Menage2007-10-191-0/+3
| | | | | | | | | | | | | | | | | | | | Add support for cgroup_clone(), a way to create new cgroups intended to be used for systems such as namespace unsharing. A new subsystem callback, post_clone(), is added to allow subsystems to automatically configure cloned cgroups. Signed-off-by: Paul Menage <menage@google.com> Cc: Serge E. Hallyn <serue@us.ibm.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Dave Hansen <haveblue@us.ibm.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Paul Jackson <pj@sgi.com> Cc: Kirill Korotaev <dev@openvz.org> Cc: Herbert Poetzl <herbert@13thfloor.at> Cc: Srivatsa Vaddagiri <vatsa@in.ibm.com> Cc: Cedric Le Goater <clg@fr.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Task Control Groups: add fork()/exit() hooksPaul Menage2007-10-191-0/+6
| | | | | | | | | | | | | | | | | | | This adds the necessary hooks to the fork() and exit() paths to ensure that new children inherit their parent's cgroup assignments, and that exiting processes release reference counts on their cgroups. Signed-off-by: Paul Menage <menage@google.com> Cc: Serge E. Hallyn <serue@us.ibm.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Dave Hansen <haveblue@us.ibm.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Paul Jackson <pj@sgi.com> Cc: Kirill Korotaev <dev@openvz.org> Cc: Herbert Poetzl <herbert@13thfloor.at> Cc: Srivatsa Vaddagiri <vatsa@in.ibm.com> Cc: Cedric Le Goater <clg@fr.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Add cgroup write_uint() helper methodPaul Menage2007-10-191-0/+8
| | | | | | | | | | | | Add write_uint() helper method for cgroup subsystems This helper is analagous to the read_uint() helper method for reporting u64 values to userspace. It's designed to reduce the amount of boilerplate requierd for creating new cgroup subsystems. Signed-off-by: Paul Menage <menage@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Task Control Groups: add tasks file interfacePaul Menage2007-10-191-0/+10
| | | | | | | | | | | | | | | | | | | | Add the per-directory "tasks" file for cgroupfs mounts; this allows the user to determine which tasks are members of a cgroup by reading a cgroup's "tasks", and to move a task into a cgroup by writing its pid to its "tasks". Signed-off-by: Paul Menage <menage@google.com> Cc: Serge E. Hallyn <serue@us.ibm.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Dave Hansen <haveblue@us.ibm.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Paul Jackson <pj@sgi.com> Cc: Kirill Korotaev <dev@openvz.org> Cc: Herbert Poetzl <herbert@13thfloor.at> Cc: Srivatsa Vaddagiri <vatsa@in.ibm.com> Cc: Cedric Le Goater <clg@fr.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Task Control Groups: basic task cgroup frameworkPaul Menage2007-10-194-1/+258
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Generic Process Control Groups -------------------------- There have recently been various proposals floating around for resource management/accounting and other task grouping subsystems in the kernel, including ResGroups, User BeanCounters, NSProxy cgroups, and others. These all need the basic abstraction of being able to group together multiple processes in an aggregate, in order to track/limit the resources permitted to those processes, or control other behaviour of the processes, and all implement this grouping in different ways. This patchset provides a framework for tracking and grouping processes into arbitrary "cgroups" and assigning arbitrary state to those groupings, in order to control the behaviour of the cgroup as an aggregate. The intention is that the various resource management and virtualization/cgroup efforts can also become task cgroup clients, with the result that: - the userspace APIs are (somewhat) normalised - it's easier to test e.g. the ResGroups CPU controller in conjunction with the BeanCounters memory controller, or use either of them as the resource-control portion of a virtual server system. - the additional kernel footprint of any of the competing resource management systems is substantially reduced, since it doesn't need to provide process grouping/containment, hence improving their chances of getting into the kernel This patch: Add the main task cgroups framework - the cgroup filesystem, and the basic structures for tracking membership and associating subsystem state objects to tasks. Signed-off-by: Paul Menage <menage@google.com> Cc: Serge E. Hallyn <serue@us.ibm.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Dave Hansen <haveblue@us.ibm.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Paul Jackson <pj@sgi.com> Cc: Kirill Korotaev <dev@openvz.org> Cc: Herbert Poetzl <herbert@13thfloor.at> Cc: Srivatsa Vaddagiri <vatsa@in.ibm.com> Cc: Cedric Le Goater <clg@fr.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* kernel-api docbook: fix content problemsRandy Dunlap2007-10-192-3/+4
| | | | | | | | | | | | | | | | | Fix kernel-api docbook contents problems. docproc: linux-2.6.23-git13/include/asm-x86/unaligned_32.h: No such file or directory Warning(linux-2.6.23-git13//include/linux/list.h:482): bad line: of list entry Warning(linux-2.6.23-git13//mm/filemap.c:864): No description found for parameter 'ra' Warning(linux-2.6.23-git13//block/ll_rw_blk.c:3760): No description found for parameter 'req' Warning(linux-2.6.23-git13//include/linux/input.h:1077): No description found for parameter 'private' Warning(linux-2.6.23-git13//include/linux/input.h:1077): No description found for parameter 'cdev' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: WU Fengguang <wfg@mail.ustc.edu.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* reiserfs: ignore on disk s_bmap_nr valueJeff Mahoney2007-10-191-0/+12
| | | | | | | | | | | | | | | | | | | | | Implement support for file systems larger than 8 TiB. The reiserfs superblock contains a 16 bit value for counting the number of bitmap blocks. The rest of the disk format supports file systems up to 2^32 blocks, but the bitmap block limitation artificially limits this to 8 TiB with a 4KiB block size. Rather than trust the superblock's 16-bit bitmap block count, we calculate it dynamically based on the number of blocks in the file system. When an incorrect value is observed in the superblock, it is zeroed out, ensuring that older kernels will not be able to mount the file system. Userspace support has already been implemented and shipped in reiserfsprogs 3.6.20. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* reiserfs: remove first_zero_hintJeff Mahoney2007-10-191-3/+1
| | | | | | | | | | | | | | The first_zero_hint metadata caching was never actually used, and it's of dubious optimization quality. This patch removes it. It doesn't actually shrink the size of the reiserfs_bitmap_info struct, since that doesn't work with block sizes larger than 8K. There was a big fixme in there, and with all the work lately in allowing block size > page size, I might as well kill the fixme as well. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* reiserfs: fix usage of signed ints for block numbersJeff Mahoney2007-10-191-6/+8
| | | | | | | | | | | | Do a quick signedness check for block numbers. There are a number of places where signed integers are used for block numbers, which limits the usable file system size to 8 TiB. The disk format, excepting a problem which will be fixed in the following patch, supports file systems up to 16 TiB in size. This patch cleans up those sites so that we can enable the full usable size. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* jbd: config_jbd_debug cannot create /proc entryJose R. Santos2007-10-191-1/+1
| | | | | | | | | | | | | | | | | | The jbd-debug file used to be located in /proc/sys/fs/jbd-debug, but create_proc_entry() does not do lookups on file names that are more that one directory deep. This causes the entry creation to fail and hence, no proc file is created. Instead of fixing this on procfs might as well move the jbd2-debug file to debugfs which would be the preferred location for this kind of tunable. The new location is now /sys/kernel/debug/jbd/jbd-debug. [akpm@linux-foundation.org: zillions of cleanups] Signed-off-by: Jose R. Santos <jrs@us.ibm.com> Acked-by: Jan Kara <jack@suse.cz> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* jbd: remove printk() from J_ASSERT macrosChris Snook2007-10-191-15/+1
| | | | | | | | | | Remove printk from J_ASSERT to preserve registers during BUG. Signed-off-by: Chris Snook <csnook@redhat.com> Cc: "Stephen C. Tweedie" <sct@redhat.com> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Console events and accessibilitySamuel Thibault2007-10-192-0/+18
| | | | | | | | | | | | | Some external modules like Speakup need to monitor console output. This adds a VT notifier that such modules can use to get console output events: allocation, deallocation, writes, other updates (cursor position, switch, etc.) [akpm@linux-foundation.org: fix headers_check] Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Cc: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Add kernel/notifier.cAlexey Dobriyan2007-10-191-0/+2
| | | | | | | | | | | | There is separate notifier header, but no separate notifier .c file. Extract notifier code out of kernel/sys.c which will remain for misc syscalls I hope. Merge kernel/die_notifier.c into kernel/notifier.c. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* remove unused flush_tlb_pgtablesBenjamin Herrenschmidt2007-10-1924-167/+0
| | | | | | | | | | Nobody uses flush_tlb_pgtables anymore, this patch removes all remaining traces of it from all archs. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Console keyboard events and accessibilitySamuel Thibault2007-10-192-0/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some blind people use a kernel engine called Speakup which uses hardware synthesis to speak what gets displayed on the screen. They use the PC keyboard to control this engine (start/stop, accelerate, ...) and also need to get keyboard feedback (to make sure to know what they are typing, the caps lock status, etc.) Up to now, the way it was done was very ugly. Below is a patch to add a notifier list for permitting a far better implementation, see ChangeLog above for details. You may wonder why this can't be done at the input layer. The problem is that what people want to monitor is the console keyboard, i.e. all input keyboards that got attached to the console, and with the currently active keymap (i.e. keysyms, not only keycodes). This adds a keyboard notifier that such modules can use to get the keyboard events and possibly eat them, at several stages: - keycodes: even before translation into keysym. - unbound keycodes: when no keysym is bound. - unicode: when the keycode would get translated into a unicode character. - keysym: when the keycode would get translated into a keysym. - post_keysym: after the keysym got interpreted, so as to see the result (caps lock, etc.) This also provides access to k_handler so as to permit simulation of keypresses. [akpm@linux-foundation.org: various fixes] Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* put declaration of put_filesystem() in fs.hMiklos Szeredi2007-10-191-0/+2
| | | | | | | | | | Declarations go into headers. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Cc: Ram Pai <linuxram@us.ibm.com> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'upstream-linus' of ↵Linus Torvalds2007-10-181-0/+18
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: pcnet32: remove private net_device_stats structure vortex_up should initialize "err" pcnet32: remove compile warnings in non-napi mode pcnet32: fix non-napi packet reception fix EMAC driver for proper napi_synchronize API sky2: shutdown cleanup napi_synchronize: waiting for NAPI forcedeth msi bugfix gianfar: fix obviously wrong #ifdef CONFIG_GFAR_NAPI placement fs_enet: Update for API changes gianfar: remove orphan struct. forcedeth: fix rx-work condition in nv_rx_process_optimized() too
| * napi_synchronize: waiting for NAPIStephen Hemminger2007-10-171-0/+18
| | | | | | | | | | | | | | | | Some drivers with shared NAPI need a synchronization barrier. Also suggested by Benjamin Herrenschmidt for EMAC. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | Merge master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds2007-10-181-22/+36
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6: (37 commits) ide: set drive->autotune in ide_pci_setup_ports() triflex: always tune PIO opti621: always tune PIO cy82c693: always tune PIO cs5520: always tune PIO alim15x3: always tune PIO ide: add IDE_HFLAG_LEGACY_IRQS host flag ide: add IDE_HFLAG_SERIALIZE host flag ide: add IDE_HFLAG_ERROR_STOPS_FIFO host flag piix: add DECLARE_ICH_DEV() macro pdc202xx_old: add DECLARE_PDC2026X_DEV() macro pdc202xx_new: add DECLARE_PDCNEW_DEV() macro aec62xx: no need to disable UDMA in ->init_hwif method for ATP850UF ide: remove .init_setup from ide_pci_device_t serverworks: remove ->init_setup scc_pata: remove ->init_setup pdc202xx_old: remove ->init_setup pdc202xx_new: remove ->init_setup hpt366: remove ->init_setup cmd64x: remove ->init_setup ...
| * | ide: add IDE_HFLAG_LEGACY_IRQS host flagBartlomiej Zolnierkiewicz2007-10-191-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add IDE_HFLAG_LEGACY_IRQS host flag to tell ide_pci_setup_ports() to set hwif->irq to legacy IRQ 14/15 (iff hwif->irq is not already set) and convert atiixp, piix, serverworks, sis5513 and slc90e66 host drivers to use it. While at it: * In piix.c add IDE_HFLAGS_PIIX define and don't use ->init_hwif for MPIIX. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | ide: add IDE_HFLAG_SERIALIZE host flagBartlomiej Zolnierkiewicz2007-10-191-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | Add IDE_HFLAG_SERIALIZE host flag to tell ide_pci_setup_ports() to set hwif/mate->serialized and convert aec62xx, cs5530 and sc1200 host drivers to use it. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | ide: add IDE_HFLAG_ERROR_STOPS_FIFO host flagBartlomiej Zolnierkiewicz2007-10-191-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | Add IDE_HFLAG_ERROR_STOPS_FIFO host flag and use it instead of hwif->err_stops_fifo. As a side-effect this change fixes hwif->err_stops_fifo not being restored by ide_hwif_restore(). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | ide: remove .init_setup from ide_pci_device_tBartlomiej Zolnierkiewicz2007-10-191-1/+0
| | | | | | | | | | | | | | | | | | Now that all users were fixed we can safely remove it. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | ide: add ->mwdma_mask and ->swdma_mask to ide_pci_device_t (take 2)Bartlomiej Zolnierkiewicz2007-10-191-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Add ->mwdma_mask and ->swdma_mask to ide_pci_device_t. * Set ide_hwif_t DMA masks using DMA masks from ide_pci_device_t in setup-pci.c::ide_pci_setup_ports() (iff DMA base is valid and ->init_hwif method may still override them). * Convert IDE PCI host drivers to use ide_pci_device_t DMA masks. While at it: * Use ATA_{UDMA,MWDMA,SWDMA}* defines. * hpt34x.c: add separate ide_pci_device_t instances for HPT343 and HPT345. * serverworks.c: fix DMA masks being set before checking DMA base. v2: * Add missing masks to DECLARE_GENERIC_PCI_DEV() macro. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | ide: add IDE_HFLAG_NO_LBA48 and IDE_HFLAG_NO_LBA48_DMA host flagsBartlomiej Zolnierkiewicz2007-10-191-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | Add IDE_HFLAG_NO_LBA48[_DMA] host flags, use it instead of hwif->no_lba48[_dma] and then remove no longer needed hwif->no_lba48[_dma]. As a side-effect this change fixes hwif->no_lba48_dma not being restored by ide_hwif_restore(). Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | ide: remove ->init_setup_dma from ide_pci_device_t (take 2)Bartlomiej Zolnierkiewicz2007-10-191-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Make ide_pci_device_t.host_flags u32 and add IDE_HFLAG_CS5520 host flag. * Pass ide_pci_device_t *d to setup-pci.c::ide_get_or_set_dma_base() and use d->name instead of hwif->cds->name. * Set IDE_HFLAG_CS5520 host flag in cs5520 host driver and use it in ide_get_or_set_dma_base() to find out which PCI BAR to use, remove no longer needed cs5520.c::cs5520_init_setup_dma() and ide_pci_device_t.init_setup_dma. This fixes PCI bus-mastering not being checked for CS5510/CS5520 hosts. v2: * It is wrong to check simplex bits on CS5510/CS5520 as v1 did. (Noticed by Alan). Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | ide: add IDE_HFLAG_NO_{DMA,AUTODMA} host flagsBartlomiej Zolnierkiewicz2007-10-191-5/+4
| | | | | | | | | | | | | | | | | | | | | | | | Add IDE_HFLAG_NO_{DMA,AUTODMA} host flags. Convert all host drivers using ide_pci_device_t to use these flags instead of d->autodma and then remove no longer needed d->autodma. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | ide: add IDE_HFLAG_BOOTABLE host flagBartlomiej Zolnierkiewicz2007-10-191-10/+8
| | | | | | | | | | | | | | | | | | | | | | | | Add IDE_HFLAG_BOOTABLE host flag and IDE_HFLAG_OFF_BOARD define. Convert all host drivers using ide_pci_device_t to use IDE_HFLAG_{BOOTABLE,OFF_BOARD} instead of d->bootable and then remove no longer needed d->bootable. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | ide: add IDE_HFLAG_NO_ATAPI_DMA host flagBartlomiej Zolnierkiewicz2007-10-191-1/+2
| | | | | | | | | | | | | | | | | | | | | Add IDE_HFLAG_NO_ATAPI_DMA host flag and set it in host drivers which don't support ATAPI DMA. Then remove no longer needed hwif->atapi_dma. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | ide: Add ide_get_paired_drive() helperBenjamin Herrenschmidt2007-10-191-0/+7
| |/ | | | | | | | | | | | | | | | | | | This adds a helper to get to the "other" drive on a pair connected to a given hwif. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Andrew Morton <akpm@osdl.org> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* | Merge ssh://master.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-hrtLinus Torvalds2007-10-181-1/+1
|\ \ | | | | | | | | | | | | | | | * ssh://master.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-hrt: hrtimer: hook compat_sys_nanosleep up to high res timer code hrtimer: Rework hrtimer_nanosleep to make sys_compat_nanosleep easier
| * | hrtimer: Rework hrtimer_nanosleep to make sys_compat_nanosleep easierAnton Blanchard2007-10-181-1/+1
| |/ | | | | | | | | | | | | | | | | | | | | Pull the copy_to_user out of hrtimer_nanosleep and into the callers (common_nsleep, sys_nanosleep) in preparation for converting compat_sys_nanosleep to use hrtimers. Signed-off-by: Anton Blanchard <anton@samba.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | Merge branch 'upstream-linus' of ↵Linus Torvalds2007-10-181-12/+0
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev: [libata] kill ata_sg_is_last() Update libata driver for bf548 atapi controller against the 2.6.24 tree. libata-sff: Correct use of check_status() drivers/ata: add support to Freescale 3.0Gbps SATA Controller pata_acpi: fix build breakage if !CONFIG_PM
| * | [libata] kill ata_sg_is_last()Jeff Garzik2007-10-181-12/+0
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | Short term, this works around a bug introduced by early sg-chaining work. Long term, removing this function eliminates a branch from a hot path loop in each scatter/gather table build. Also, as this code demonstrates, we don't need to _track_ the end of the s/g list, as long as we mark it in some way. And doing so programatically is nice. So its a useful cleanup, regardless of its short term effects. Based conceptually on a quick patch by Jens Axboe. Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-schedLinus Torvalds2007-10-181-21/+21
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched: sched: reduce schedstat variable overhead a bit sched: add KERN_CONT annotation sched: cleanup, make struct rq comments more consistent sched: cleanup, fix spacing sched: fix return value of wait_for_completion_interruptible()
| * | sched: reduce schedstat variable overhead a bitKen Chen2007-10-181-21/+21
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | schedstat is useful in investigating CPU scheduler behavior. Ideally, I think it is beneficial to have it on all the time. However, the cost of turning it on in production system is quite high, largely due to number of events it collects and also due to its large memory footprint. Most of the fields probably don't need to be full 64-bit on 64-bit arch. Rolling over 4 billion events will most like take a long time and user space tool can be made to accommodate that. I'm proposing kernel to cut back most of variable width on 64-bit system. (note, the following patch doesn't affect 32-bit system). Signed-off-by: Ken Chen <kenchen@google.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds2007-10-182-2/+14
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [MIPS] time: Move R4000 clockevent device code to separate configurable file [MIPS] time: Delete dead cycles_per_jiffy, mips_timer_ack and null_timer_ack [MIPS] IP32: Retire use of plat_timer_setup. [MIPS] Jazz: Retire use of plat_timer_setup. [MIPS] IP27: Convert to clock_event_device. [MIPS] JMR3927: Convert to clock_event_device. [MIPS] Always do the ARC64_TWIDDLE_PC thing.
| * | [MIPS] time: Move R4000 clockevent device code to separate configurable fileRalf Baechle2007-10-181-0/+6
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | [MIPS] time: Delete dead cycles_per_jiffy, mips_timer_ack and null_timer_ackRalf Baechle2007-10-181-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | cycles_per_jiffy was only ever getting assigned and the function pointer not being called anymore and mips_timer_ack had gotten similarly stale. I leave the remaining assignments unfixed as a lighthouse pointing platform maintainers to what needs a rewrite. These changes make null_timer_ack() unreferenced, so delete that too. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | [MIPS] Always do the ARC64_TWIDDLE_PC thing.Thomas Bogendoerfer2007-10-181-1/+8
| |/ | | | | | | | | | | | | | | Always jump to the place where the kernel is linked to. This helps where the bootloaders/proms ignores the start address inside the ELF header. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | Merge branch 'master' of ↵Linus Torvalds2007-10-187-34/+55
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: (51 commits) [IPV6]: Fix again the fl6_sock_lookup() fixed locking [NETFILTER]: nf_conntrack_tcp: fix connection reopening fix [IPV6]: Fix race in ipv6_flowlabel_opt() when inserting two labels [IPV6]: Lost locking in fl6_sock_lookup [IPV6]: Lost locking when inserting a flowlabel in ipv6_fl_list [NETFILTER]: xt_sctp: fix mistake to pass a pointer where array is required [NET]: Fix OOPS due to missing check in dev_parse_header(). [TCP]: Remove lost_retrans zero seqno special cases [NET]: fix carrier-on bug? [NET]: Fix uninitialised variable in ip_frag_reasm() [IPSEC]: Rename mode to outer_mode and add inner_mode [IPSEC]: Disallow combinations of RO and AH/ESP/IPCOMP [IPSEC]: Use the top IPv4 route's peer instead of the bottom [IPSEC]: Store afinfo pointer in xfrm_mode [IPSEC]: Add missing BEET checks [IPSEC]: Move type and mode map into xfrm_state.c [IPSEC]: Fix length check in xfrm_parse_spi [IPSEC]: Move ip_summed zapping out of xfrm6_rcv_spi [IPSEC]: Get nexthdr from caller in xfrm6_rcv_spi [IPSEC]: Move tunnel parsing for IPv4 out of xfrm4_input ...
| * | [NETFILTER]: xt_sctp: fix mistake to pass a pointer where array is requiredLi Zefan2007-10-181-8/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Macros like SCTP_CHUNKMAP_XXX(chukmap) require chukmap to be an array, but match_packet() passes a pointer to these macros. Also remove the ELEMCOUNT macro and fix a bug in SCTP_CHUNKMAP_COPY. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NET]: Fix OOPS due to missing check in dev_parse_header().Patrick McHardy2007-10-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [ This is kernel bugzilla 9174 "linux-2.6.23-git11 kernel panic" ] The device in question is an IPv6-over-IPv4 tunnel, which doesn't have any header_ops, so the crash happens in dev_parse_header when dereferencing them. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [IPSEC]: Rename mode to outer_mode and add inner_modeHerbert Xu2007-10-171-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a new field to xfrm states called inner_mode. The existing mode object is renamed to outer_mode. This is the first part of an attempt to fix inter-family transforms. As it is we always use the outer family when determining which mode to use. As a result we may end up shoving IPv4 packets into netfilter6 and vice versa. What we really want is to use the inner family for the first part of outbound processing and the outer family for the second part. For inbound processing we'd use the opposite pairing. I've also added a check to prevent silly combinations such as transport mode with inter-family transforms. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [IPSEC]: Store afinfo pointer in xfrm_modeHerbert Xu2007-10-171-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is convenient to have a pointer from xfrm_state to address-specific functions such as the output function for a family. Currently the address-specific policy code calls out to the xfrm state code to get those pointers when we could get it in an easier way via the state itself. This patch adds an xfrm_state_afinfo to xfrm_mode (since they're address-specific) and changes the policy code to use it. I've also added an owner field to do reference counting on the module providing the afinfo even though it isn't strictly necessary today since IPv6 can't be unloaded yet. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [IPSEC]: Add missing BEET checksHerbert Xu2007-10-171-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently BEET mode does not reinject the packet back into the stack like tunnel mode does. Since BEET should behave just like tunnel mode this is incorrect. This patch fixes this by introducing a flags field to xfrm_mode that tells the IPsec code whether it should terminate and reinject the packet back into the stack. It then sets the flag for BEET and tunnel mode. I've also added a number of missing BEET checks elsewhere where we check whether a given mode is a tunnel or not. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [IPSEC]: Move type and mode map into xfrm_state.cHerbert Xu2007-10-171-6/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The type and mode maps are only used by SAs, not policies. So it makes sense to move them from xfrm_policy.c into xfrm_state.c. This also allows us to mark xfrm_get_type/xfrm_put_type/xfrm_get_mode/xfrm_put_mode as static. The only other change I've made in the move is to get rid of the casts on the request_module call for types. They're unnecessary because C will promote them to ints anyway. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [IPSEC]: Get nexthdr from caller in xfrm6_rcv_spiHerbert Xu2007-10-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently xfrm6_rcv_spi gets the nexthdr value itself from the packet. This means that we need to fix up the value in case we have a 4-on-6 tunnel. Moving this logic into the caller simplifies things and allows us to merge the code with IPv4. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [IPSEC]: Move tunnel parsing for IPv4 out of xfrm4_inputHerbert Xu2007-10-171-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch moves the tunnel parsing for IPv4 out of xfrm4_input and into xfrm4_tunnel. This change is in line with what IPv6 does and will allow us to merge the two input functions. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NET]: Fix the race between sk_filter_(de|at)tach and sk_clone()Pavel Emelyanov2007-10-171-11/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The proposed fix is to delay the reference counter decrement until the quiescent state pass. This will give sk_clone() a chance to get the reference on the cloned filter. Regular sk_filter_uncharge can happen from the sk_free() only and there's no need in delaying the put - the socket is dead anyway and is to be release itself. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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