aboutsummaryrefslogtreecommitdiffstats
path: root/include
Commit message (Collapse)AuthorAge
* [PATCH] tty: update the tty layer to work with struct pidEric W. Biederman2007-02-12
| | | | | | | | | | | | | | | | | Of kernel subsystems that work with pids the tty layer is probably the largest consumer. But it has the nice virtue that the assiation with a session only lasts until the session leader exits. Which means that no reference counting is required. So using struct pid winds up being a simple optimization to avoid hash table lookups. In the long term the use of pid_nr also ensures that when we have multiple pid spaces mixed everything will work correctly. Signed-off-by: Eric W. Biederman <eric@maxwell.lnxi.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] pid: replace is_orphaned_pgrp with is_current_pgrp_orphanedEric W. Biederman2007-02-12
| | | | | | | | | | | | | | | | | | | Every call to is_orphaned_pgrp passed in process_group(current) which is racy with respect to another thread changing our process group. It didn't bite us because we were dealing with integers and the worse we would get would be a stale answer. In switching the checks to use struct pid to be a little more efficient and prepare the way for pid namespaces this race became apparent. So I simplified the calls to the more specialized is_current_pgrp_orphaned so I didn't have to worry about making logic changes to avoid the race. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] pid: make session_of_pgrp use struct pid instead of pid_tEric W. Biederman2007-02-12
| | | | | | | | | | | | | | | | | | | | | | | | | To properly implement a pid namespace I need to deal exclusively in terms of struct pid, because pid_t values become ambiguous. To this end session_of_pgrp is transformed to take and return a struct pid pointer. To avoid the need to worry about reference counting I now require my caller to hold the appropriate locks. Leaving callers repsonsible for increasing the reference count if they need access to the result outside of the locks. Since session_of_pgrp currently only has one caller and that caller simply uses only test the result for equality with another process group, the locking change means I don't actually have to acquire the tasklist_lock at all. tiocspgrp is also modified to take and release the lock. The logic there is a little more complicated but nothing I won't need when I convert pgrp of a tty to a struct pid pointer. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] tty: make __proc_set_tty staticEric W. Biederman2007-02-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The aim of this patch set is to start wrapping up the struct pid conversions. As such this patchset culminates with the removal of kill_pg, kill_pg_info, __kill_pg_info, do_each_task_pid, and while_each_task_pid. kill_proc, daemonize, and kernel_thread are still in my sights but there is still work to get to them. The first three are basic cleanups around disassociate_ctty, while working on converting it I found several issues. tty_old_pgrp can be a tricky concept to wrap your head around. 1 tty: Make __proc_set_tty static. 2 tty: Clarify disassociate_ctty 3 tty: Fix the locking for signal->session in disassociate_ctty These just stop using the old helper functions. 4 signal: Use kill_pgrp not kill_pg in the sunos compatibility code. 5 signal: Rewrite kill_something_info so it uses newer helpers. Then the grind to convert the tty layer and all of it's helper functions to struct pid. 6 pid: Make session_of_pgrp use struct pid instead of pid_t. 7 pid: Use struct pid for talking about process groups in exit.c 8 pid: Replace is_orphaned_pgrp with is_current_pgrp_orphaned 9 tty: Update the tty layer to work with struct pid. A final helper function update. 10 pid: Replace do/while_each_task_pid with do/while_each_pid_task And the removal of the functions that are now unused. 11 pid: Remove now unused do_each_task_pid and while_each_task_pid 12 pid: Remove the now unused kill_pg kill_pg_info and __kill_pg_info All of these should be fairly simple and to the point. This patch: Currently all users of __proc_set_tty are in tty_io.c so make the function static. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] Minix V3 supportAndries Brouwer2007-02-12
| | | | | | | | | | | | | | | | | This morning I needed to read a Minix V3 filesystem, but unfortunately my 2.6.19 did not support that, and neither did the downloaded 2.6.20rc4. Fortunately, google told me that Daniel Aragones had already done the work, patch found at http://www.terra.es/personal2/danarag/ Unfortunaly, looking at the patch was painful to my eyes, so I polished it a bit before applying. The resulting kernel boots, and reads the filesystem it needed to read. Signed-off-by: Daniel Aragones <danarag@gmail.com> Signed-off-by: Andries Brouwer <aeb@cwi.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] SPI eeprom driverDavid Brownell2007-02-12
| | | | | | | | | | | | | | | | | This is adds a simple SPI EEPROM driver, providing access to the EEPROM through sysfs much like the I2C "eeprom" driver ... except this driver supports write access, and multiple EEPROM sizes. From: "Tuppa, Walter" <walter.tuppa@siemens.com> Since I have EEPROMs on SPI with different address sizing, I made some changes to your at25.c to support them. Works perfectly. (Also includes a small bugfix for the "what size address" test.) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Walter Tuppa <walter.tuppa@siemens.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] SPI doc clarificationsDavid Brownell2007-02-12
| | | | | | | | | | | | This clarifies some aspects of the SPI programming interface, based on feedback from Hans-Peter Nilsson. The in-memory representation of words is right-aligned, so for example a twelve bit word is stored using sixteen bits with four undefined bits in the MSB. And controller drivers must reject protocol tweaking modes they do not support. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] SPI cleanup() method param becomes non-constHans-Peter Nilsson2007-02-12
| | | | | | | | | | | | | | | | I'd like to assign NULL to kfree()d members of a structure. I can't do that without ugly casting (see the PXA patch) when the structure pointed to is const-qualified. I don't really see a reason why the cleanup method isn't allowed to alter the object it should clean up. :-) No, I didn't test the PXA patch, but I verified that the NULL-assignment doesn't stop me from doing rmmod/insmodding my own spi_bitbang-based driver. Signed-off-by: Hans-Peter Nilsson <hp@axis.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] spi: remove return in spi_unregister_driver()Ben Dooks2007-02-12
| | | | | | | | | | | | Make the spi_unregister_driver() code fit in with the rest of the header file, and only do the action if the driver passed is non-NULL. This also makes the code a line smaller. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] spi: add spi_set_drvdata() and spi_get_drvdata()Ben Dooks2007-02-12
| | | | | | | | | | | Add wrappers for getting and setting the driver data using spi_device instead of using dev_{get|set}_drvdata with &spi->dev, to mirror the platform_{get|set}_drvdata. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] SPI: Freescale iMX SPI controller driver (BIS+)Andrea Paterniani2007-02-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add the SPI controller driver for Freescale i.MX(S/L/1). Main features summary: > Per chip setup via board specific code and/or protocol driver. > Per transfer setup. > PIO transfers. > DMA transfers. > Managing of NULL tx / rx buffer for rd only / wr only transfers. This patch replace patch-2.6.20-rc4-spi_imx with the following changes: > Few cosmetic changes. > Function map_dma_buffers now return 0 for success and -1 for failure. > Solved a bug inside spi_imx_probe function (wrong error path). > Solved a bug inside setup function (bad undo setup for max_speed_hz). > For read-only transfers, always write zero bytes. This is almost the same as the 'BIS' version sent by Andrea, except for updating the 'DUMMY' byte so that read-only transfers shift out zeroes. That part of the API changed recently, since some half duplex peripheral chips require that semantic. Signed-off-by: Andrea Paterniani <a.paterniani@swapp-eng.it> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] drivers/isdn/gigaset: new M101 driver (v2)Tilman Schmidt2007-02-12
| | | | | | | | | | This patch adds the line discipline based driver for the Gigaset M101 wireless RS232 adapter. It also improves the documentation a bit. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: Hansjoerg Lipp <hjlipp@web.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] export ufs_fs.h to userspaceMike Frysinger2007-02-12
| | | | | | | | | | | | | Was ufs_fs.h purposefully not exported to userspace or did it just slip through the cracks ? assuming the latter scenario, the attached patch touches up the relationship between ufs_fs.h and its sub headers (like ufs_fs_sb.h) so that we can export it ... the silo bootloader takes advantage of this header for example. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] lockdep: forward declare struct task_structHeiko Carstens2007-02-12
| | | | | | | | | | | | | | | | | | 3117df0453828bd045c16244e6f50e5714667a8a causes this: In file included from arch/s390/kernel/early.c:13: include/linux/lockdep.h:300: warning: "struct task_struct" declared inside parameter list include/linux/lockdep.h:300: warning: its scope is only this definition or declaration, which is probably not what you want Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] warning fix: unsigned->signedTomasz Kvarsin2007-02-12
| | | | | | | | | | | | While compiling my code with -Wconversion using gcc-trunk, I always get a bunch of warrning from headers, here is fix for them: __getblk is alawys called with unsigned argument, but it takes signed, the same story with __bread,__breadahead and so on. Signed-off-by: Tomasz Kvarsin Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] move remove_dquot_ref to dqout.cChristoph Hellwig2007-02-12
| | | | | | | | | | | Remove_dquot_ref can move to dqout.c instead of beeing in inode.c under #ifdef CONFIG_QUOTA. Also clean the resulting code up a tiny little bit by testing sb->dq_op earlier - it's constant over a filesystems lifetime. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Jan Kara <jack@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] QUOTA: Have <linux/quota.h> include <linux/rwsem.h> explicitlyRobert P. J. Day2007-02-12
| | | | | | | | | | Since quota.h declares a R/W semaphore, it should include rwsem.h explicitly. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] include/linux/kernel.h: Remove labs()Richard Knutsson2007-02-12
| | | | | | | | Remove labs() since it is not used/needed. Signed-off-by: Richard Knutsson <ricknu-0@student.ltu.se> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] Make BH_Unwritten a first class bufferhead flag V2David Chinner2007-02-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, XFS uses BH_PrivateStart for flagging unwritten extent state in a bufferhead. Recently, I found the long standing mmap/unwritten extent conversion bug, and it was to do with partial page invalidation not clearing the unwritten flag from bufferheads attached to the page but beyond EOF. See here for a full explaination: http://oss.sgi.com/archives/xfs/2006-12/msg00196.html The solution I have checked into the XFS dev tree involves duplicating code from block_invalidatepage to clear the unwritten flag from the bufferhead(s), and then calling block_invalidatepage() to do the rest. Christoph suggested that this would be better solved by pushing the unwritten flag into the common buffer head flags and just adding the call to discard_buffer(): http://oss.sgi.com/archives/xfs/2006-12/msg00239.html The following patch makes BH_Unwritten a first class citizen. Signed-off-by: Dave Chinner <dgc@sgi.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>
* [PATCH] Add NOPFN_REFAULT result from vm_ops->nopfn()Benjamin Herrenschmidt2007-02-12
| | | | | | | | | | | | | Add a NOPFN_REFAULT return code for vm_ops->nopfn() equivalent to NOPAGE_REFAULT for vmops->nopage() indicating that the handler requests a re-execution of the faulting instruction Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Arnd Bergmann <arnd.bergmann@de.ibm.com> Cc: Hugh Dickins <hugh@veritas.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] add vm_insert_pfn()Nick Piggin2007-02-12
| | | | | | | | | | | | | Add a vm_insert_pfn helper, so that ->fault handlers can have nopfn functionality by installing their own pte and returning NULL. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Arnd Bergmann <arnd.bergmann@de.ibm.com> Cc: Hugh Dickins <hugh@veritas.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] one more iomap s390 build fixHeiko Carstens2007-02-11
| | | | | | | | | | | | | | | | | | Commit 9ac7849e35f705830f7b016ff272b0ff1f7ff759 causes this on S390: drivers/built-in.o: In function `dmam_noncoherent_release': dma-mapping.c:(.text+0x1515c): undefined reference to `dma_free_noncoherent' drivers/built-in.o: In function `dmam_free_noncoherent': undefined reference to `dma_free_noncoherent' drivers/built-in.o: In function `dmam_alloc_noncoherent': undefined reference to `dma_alloc_noncoherent' make: *** [.tmp_vmlinux1] Error 1 Cc: Tejun Heo <htejun@gmail.com> Acked-by: Jeff Garzik <jeff@garzik.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cfq-iosched: remove cfq_io_context last_queueJens Axboe2007-02-11
| | | | | | | It hasn't been used for a while, kill it off and remove the old if 0 code chunk. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2007-02-11
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: remove scan_keyb driver Input: i8042 - fix AUX IRQ delivery check Input: wistron - add support for Fujitsu-Siemens Amilo D88x0 Input: inport - use correct config option for ATIXL Input: HIL - handle erros from input_register_device() Input: tsdev - schedule removal Input: add Atlas button driver Input: ads7846 - be more compatible with the hwmon framework Input: ads7846 - detect pen up from GPIO state Input: ads7846 - select correct SPI mode Input: ads7846 - switch to using hrtimer Input: ads7846 - optionally leave Vref on during differential measurements Input: ads7846 - pluggable filtering logic Input: gpio-keys - keyboard driver for GPIO buttons Input: hid-ff - add support for Logitech Momo racing wheel Input: i8042 - really suppress ACK/NAK during panic blink Input: pc110pad - return proper error
| * Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6Dmitry Torokhov2007-02-10
| |\
| * | Input: ads7846 - optionally leave Vref on during differential measurementsImre Deak2007-01-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On some LCDs leaving the Vref on provides much better readings. Signed-off-by: Jarkko Oikarinen <jarkko.oikarinen@nokia.com> Signed-off-by: Imre Deak <imre.deak@solidboot.com> Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
| * | Input: ads7846 - pluggable filtering logicImre Deak2007-01-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some LCDs like the LS041Y3 require a customized filtering logic for reliable readings, so make the filtering function replacable through platform specific hooks. Signed-off-by: Imre Deak <imre.deak@solidboot.com> Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
| * | Input: gpio-keys - keyboard driver for GPIO buttonsPhil Blundell2007-01-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is an interrupt-driven keyboard driver for simple buttons connected directly to CPU GPIO lines of embedded ARM systems. It supports pxa architectures and is used by a number of PDAs and PocketPC phones in the handhelds.org kernel. Support for other architectures, such as sa11xx and sc2410, will be added once generic GPIO API is available. Signed-off-by: Paul Sokolovsky <pmiscml@gmail.com> Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* | | Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds2007-02-11
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (97 commits) [SCSI] zfcp: removed wrong comment [SCSI] zfcp: use of uninitialized variable [SCSI] zfcp: Invalid locking order [SCSI] aic79xx: use dma_get_required_mask() [SCSI] aic79xx: fix bracket mismatch in unused macro [SCSI] BusLogic: Replace 'boolean' by 'bool' [SCSI] advansys: clean up warnings [SCSI] 53c7xx: brackets fix in uncompiled code [SCSI] nsp_cs: remove old scsi code [SCSI] aic79xx: make ahd_match_scb() static [SCSI] DAC960: kmalloc->kzalloc/Casting cleanups [SCSI] scsi_kmap_atomic_sg(): check that local irqs are disabled [SCSI] Buslogic: local_irq_disable() is redundant after local_irq_save() [SCSI] aic94xx: update for v28 firmware [SCSI] scsi_error: Fix lost EH commands [SCSI] aic94xx: Add default bus reset handler [SCSI] aic94xx: Remove TMF result code munging [SCSI] libsas: Add an LU reset mechanism to the error handler [SCSI] libsas: Don't BUG when connecting two expanders via wide port [SCSI] st: fix Tape dies if wrong block size used, bug 7919 ...
| * \ \ Merge branch 'linus'James Bottomley2007-02-10
| |\ \ \ | | | |/ | | |/| | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/scsi/ipr.c Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * | | [SCSI] libsas: Add an LU reset mechanism to the error handlerDarrick J. Wong2007-02-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After discussion with andmike and dougg, it seems that the purpose of eh_device_reset_handler is to issue LU resets, and that eh_bus_reset_handler would be a more appropriate place for a phy reset. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * | | [SCSI] spi transport class: export spi_dv_pendingEric Moore2007-02-02
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Eric Moore <Eric.Moore@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * | | Merge branch 'linus'James Bottomley2007-01-31
| |\ \ \
| * | | | [SCSI] libsas: Handle SCSI commands that complete with failure codesDarrick J. Wong2007-01-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch moves the code that handles SAS failures out of the main EH function and into a separate function. It also detects commands that have no sas_task (i.e. they completed, but with error data) and sends them into scsi_error for processing. This allows us to handle SCSI errors (and enables auto-spinup as a side effect) instead of dropping them on the floor and falling into an infinite loop. It also requires the implementation of a device reset function, which the SAS failure code has been modified to employ for REQ_DEVICE_RESET. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * | | | [SCSI] libsas: Clean up discovery failure handler codeDarrick J. Wong2007-01-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sas_rphy_delete does two things: it removes the sas_rphy from the transport layer and frees the sas_rphy. This can be broken down into two functions, sas_rphy_remove and sas_rphy_free; sas_rphy_remove is of interest to sas_discover_root_expander because it calls functions that require sas_rphy_add as a prerequisite and can fail (namely sas_discover_expander). In that case, sas_discover_root_expander needs to be able to undo the effects of sas_rphy_add yet leave the job of freeing the sas_rphy to the caller of sas_discover_root_expander. This patch also removes some unnecessary code from sas_discover_end_dev to eliminate an unnecessary cycle of sas_notify_lldd_gone/found for SAS devices, thus eliminating a sas_rphy_remove call (and fixing a race condition where a SCSI target scan can come in between the gone and found call). It also moves the sas_rphy_free calls into sas_discover_domain and sas_ex_discover_end_dev to complement the sas_rphy_allocation via sas_get_port_device. This patch does not change the semantics of sas_rphy_delete. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * | | | [SCSI] libsas: Add SAS_HA state flags to avoid queueing events while unloadingDarrick J. Wong2007-01-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Track sas_ha_struct state so that we ignore events that come in while we're shutting things down. Signed-off-by: Malahal Naineni <malahal@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * | | | [SCSI] libsas: Delay issuing ABORT TASK TMF until the error handlerDarrick J. Wong2007-01-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sas_task_abort() should simply abort the upper-level SCSI command and wait until the error handler to send the actual ABORT TASK command. By deferring things to the EH we simplify the concurrency coordination and eliminate some race conditions. Note that sas_task_abort has a few hooks to handle libsas internal commands properly too. Also rename do_sas_task_abort to __sas_task_abort just in case we really want to abort the task *right now* and we don't have a scsi_cmnd attached to the command. This is a hook for libata internal commands to abort. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * | | | [SCSI] libsas: Enable the EH strategy handler to reset a phy after a commandDarrick J. Wong2007-01-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a SAS LLDD needs to request a device port reset, it needs to have all commands aborted before it can reset the port. Since commands are put on the EH's list in the order that they were queued, the LLDD can set a "need reset" flag in the last task to be aborted so that the EH can reset the port after all commands are aborted. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * | | | [SCSI] libsas: Remove SAS_TASK_INITIATOR_ABORTED flagDarrick J. Wong2007-01-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This flag is no longer necessary because we push tasks to be aborted into the EH as soon as we possibly can, and let the SCSI EH code take care of the coordination for which this flag was used. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * | | | [SCSI] libsas: Add a sysfs knob to enable/disable a phyDarrick J. Wong2007-01-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch lets a user arbitrarily enable or disable a phy via sysfs. Potential applications include shutting down a phy to replace one lane of wide port, and (more importantly) providing a method for the libata SATL to control the phy. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * | | | [SCSI] libsas: Don't give scsi_cmnds to the EH if they never made it to the ↵Darrick J. Wong2007-01-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | SAS LLDD or have already returned On a system with many SAS targets, it appears possible that a scsi_cmnd can time out without ever making it to the SAS LLDD or at the same time that a completion is occurring. In both of these cases, telling the LLDD to abort the sas_task makes no sense because the LLDD won't know about the sas_task; what we really want to do is to increase the timer. Note that this involves creating another sas_task bit to indicate whether or not the task has been sent to the LLDD; I could have implemented this by slightly redefining SAS_TASK_STATE_PENDING, but this way seems cleaner. This second version amends the aic94xx portion to set the TASK_AT_INITIATOR flag for all sas_tasks that were passed to lldd_execute_task. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | | | | Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds2007-02-11
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [MIPS] signal: do not inline handle_signal() [MIPS] signal: do not use save_static_function() anymore [MIPS] signal32: no need to save c0_status register in setup_sigcontext32() [MIPS] signal32: reduce {setup,restore}_sigcontext32 sizes [MIPS] signal: factorize debug code [MIPS] signal: test return value of install_sigtramp() [MIPS] signal32: remove duplicate code [MIPS] signal: clean up sigframe structure [MIPS] signal: do not inline functions in signal-common.h [MIPS] signals: reduce {setup,restore}_sigcontext sizes [MIPS] Fix warning in get_user when fetching pointer object from userspace. [MIPS] Fix eth2 platform device id for jaguar_atx and ocelot_3 platforms [MIPS] JMR3927 and RBTX49x7 support little endian [MIPS] RBTX49x7: declare prom_getcmdline() [MIPS] RTLX: Sprinkle device model code into code to make udev happier. [MIPS] VPE: Sprinkle device model code into code to make udev happier.
| * | | | | [MIPS] signal32: no need to save c0_status register in setup_sigcontext32()Franck Bui-Huu2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All the information in the MIPS c0_status register is priviledged. Nothing that would constitute part of the thread context. The one flag one could possibly argument about might be c0_status.fr but none of the ABIs or tools or application software can make use of it. So for consistency with restore_sigcontext32(), which does not restore c0_status register, this patch remove the saving part. Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | | | | [MIPS] Fix warning in get_user when fetching pointer object from userspace.Ralf Baechle2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | | | | [MIPS] VPE: Sprinkle device model code into code to make udev happier.Ralf Baechle2007-02-10
| | |_|/ / | |/| | | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | | | | Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2007-02-11
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (45 commits) [IPV4]: Restore multipath routing after rt_next changes. [XFRM] IPV6: Fix outbound RO transformation which is broken by IPsec tunnel patch. [NET]: Reorder fields of struct dst_entry [DECNET]: Convert decnet route to use the new dst_entry 'next' pointer [IPV6]: Convert ipv6 route to use the new dst_entry 'next' pointer [IPV4]: Convert ipv4 route to use the new dst_entry 'next' pointer [NET]: Introduce union in struct dst_entry to hold 'next' pointer [DECNET]: fix misannotation of linkinfo_dn [DECNET]: FRA_{DST,SRC} are le16 for decnet [UDP]: UDP can use sk_hash to speedup lookups [NET]: Fix whitespace errors. [NET] XFRM: Fix whitespace errors. [NET] X25: Fix whitespace errors. [NET] WANROUTER: Fix whitespace errors. [NET] UNIX: Fix whitespace errors. [NET] TIPC: Fix whitespace errors. [NET] SUNRPC: Fix whitespace errors. [NET] SCTP: Fix whitespace errors. [NET] SCHED: Fix whitespace errors. [NET] RXRPC: Fix whitespace errors. ...
| * | | | | [NET]: Reorder fields of struct dst_entryEric Dumazet2007-02-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This last patch (but not least :) ) finally moves the next pointer at the end of struct dst_entry. This permits to perform route cache lookups with a minimal cost of one cache line per entry, instead of two. Both 32bits and 64bits platforms benefit from this new layout. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | [DECNET]: Convert decnet route to use the new dst_entry 'next' pointerEric Dumazet2007-02-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the next pointer from 'struct dn_route.u' union, and renames u.rt_next to u.dst.dn_next. It also moves 'struct flowi' right after 'struct dst_entry' to prepare speedup lookups. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | [IPV6]: Convert ipv6 route to use the new dst_entry 'next' pointerEric Dumazet2007-02-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the next pointer from 'struct rt6_info.u' union, and renames u.next to u.dst.rt6_next. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | [IPV4]: Convert ipv4 route to use the new dst_entry 'next' pointerEric Dumazet2007-02-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the rt_next pointer from 'struct rtable.u' union, and renames u.rt_next to u.dst_rt_next. It also moves 'struct flowi' right after 'struct dst_entry' to prepare the gain on lookups. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-11 09:05:19 -0500