aboutsummaryrefslogtreecommitdiffstats
path: root/drivers
Commit message (Collapse)AuthorAge
* [PATCH] I2O: first code cleanup of spare warnings and unused functionsMarkus Lidel2005-06-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Changes: - Removed unnecessary checking of NULL before calling kfree() - Make some functions static - Changed pr_debug() into osm_debug() - Use i2o_msg_in_to_virt() for getting a pointer to the message frame - Cleaned up some comments - Changed some le32_to_cpu() into readl() where necessary - Make error messages of OSM's look the same - Cleaned up error handling in i2o_block_end_request() - Removed unused error handling of failed messages in Block-OSM, which are not allowed by the I2O spec - Corrected the blocksize detection in i2o_block - Added hrt and lct sysfs-attribute to controller - Call done() function in SCSI-OSM after freeing DMA buffers - Removed unneeded variable for message size calculation in i2o_scsi_queuecommand() - Make some changes to remove sparse warnings - Reordered some functions - Cleaned up controller initialization - Replaced some magic numbers by defines - Removed unnecessary dma_sync_single_for_cpu() call on coherent DMA - Removed some unused fields in i2o_controller and removed some unused functions Signed-off-by: Markus Lidel <Markus.Lidel@shadowconnect.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] I2O: bugfixes and compability enhancementsMarkus Lidel2005-06-24
| | | | | | | | | | | | | | | | | | | | | | Changes: - Fixed sysfs bug where user and parent links where added to the I2O device itself - Fixed bug when calculating TID for the event handler and cleaned up the workflow of i2o_driver_dispatch() - Fixed oops when no I2O device could be found for an event delivered to Exec-OSM - Fixed initialization of spinlock in Exec-OSM - Fixed memory leak in i2o_cfg_passthru() and i2o_cfg_passthru() - Removed MTRR support - Added PCI ID of Promise SX6000 with firmware >= 1.20.x.x - Turn of caching for ioremapped memory of in_queue - Added initialization sequence for Promise controllers - Moved definition of u8 / u16 / u32 for raidutils before first use Signed-off-by: Markus Lidel <Markus.Lidel@shadowconnect.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] tpm: improve output in sysfs files when the TPM failsKylene Jo Hall2005-06-24
| | | | | | | | | | | | | Since after reconsideration this is more debug output than an error (the TPM is operating correctly given the current state) I have changed the statements to dbg rather than err. Also this patch corrects a memory leak if the error path is taken in the tpm_show_pubek function. Signed-off-by: Kylene Hall <kjhall@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] tpm: add debugging outputKylene Hall2005-06-24
| | | | | | Signed-off-by: Kylene Hall <kjhall@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] tpm: replace odd LPC init functionKylene Hall2005-06-24
| | | | | | | | | | | Realized the tpm_lpc_init function isn't really necessary. Replaced it with vendor specific logic to find out the address the BIOS mapped the TPM to. This patch removes the tpm_lpc_init function, enums associated with it and calls to it. The patch also implements the replacement functionality. Signed-off-by: Kylene Hall <kjhall@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] tpm: TPMs on additional LPC busKylene Hall2005-06-24
| | | | | | | | Add support for TPMs on additional LPC buses. Signed-off-by: Kylene Hall <kjhall@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] tpm: locking fixesKylene Hall2005-06-24
| | | | | | | | | Add a missing lock in the register hardware and fix a misplaced lock release release. Signed-off-by: Kylene Hall <kjhall@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] tpm: add cancel functionKylene Hall2005-06-24
| | | | | | | | | This patch provides the logic to check if an operation has been canceled while waiting for the response to arrive. Signed-off-by: Kylene Hall <kjhall@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] tpm: sysfs owernship changesKylene Hall2005-06-24
| | | | | | | | | | | | In the current driver all sysfs files end up owned by the base driver module rather than the module that actually owns the device this is a problem if the module is unloaded and the file is open. This patch fixes all that and lumps the files into an attribute_group. Signed-off-by: Kylene Hall <kjhall@us.ibm.com> Signed-off-by: Yani Ioannou <yani.ioannou@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] tpm: remove unnecessary __forceKylene Hall2005-06-24
| | | | | | | | Remove the unnecessary use of __force. Signed-off-by: Kylene Hall <kjhall@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] tpm: use to_pci_devKylene Hall2005-06-24
| | | | | | | | Changes the container_of calls to 'to_pci_dev' as suggested previously. Signed-off-by: Kylene Hall <kjhall@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] tpm: fix timer initializationKylene Hall2005-06-24
| | | | | | | | | | Fix the timer to be inited and modified properly. This work depends on the fixing of the msleep stuff which in patch 1 of this set. Signed-of-by: Kylene Hall <kjhall@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] tpm: large stack objectsKylene Hall2005-06-24
| | | | | | | | Remove some large objects be declared on the the stack. Signed-off-by: Kylene Hall <kjhall@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] tpm: read return code issueKylene Hall2005-06-24
| | | | | | | | | | Replace an erroneous return code for the read function when no data is available. Signed-of-by: Kylene Hall <kjhall@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] tpm: remove unnecessary module stuffKylene Hall2005-06-24
| | | | | | | | Description: Remove unnecessary (empty) module definitions. Signed-off-by: Kylene Hall <kjhall@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] tpm: address missing const defsKylene Hall2005-06-24
| | | | | | | | | Add "const" to several static arrays that were missing it in their definitions. Signed-off-by: Kylene Hall <kjhall@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] tpm: Fix concerns with TPM driver -- use enumsKylene Hall2005-06-24
| | | | | | | | | Convert #defines to named enums where that preference has been indicated by other kernel developers. Signed-off-by: Kylene Hall <kjhall@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] char/tpm: use msleep(), clean-up timers,Nishanth Aravamudan2005-06-24
| | | | | | | | | | | | | | The TPM driver unnecessarily uses timers when it simply needs to maintain a maximum delay via time_before(). msleep() is used instead of schedule_timeout() to guarantee the task delays as expected. While compile-testing, I found a typo in the driver, using tpm_chp instead of tpm_chip. Remove the now unused timer callback function and change TPM_TIMEOUT's units to milliseconds. Patch is compile-tested. Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Acked-by: Kylene Hall <kjhall@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ipmi: add 32-bit ioctl translations for 64-bit platformsAndrew Morton2005-06-24
| | | | | | | | | | | | | | ) From: Corey Minyard <minyard@acm.org> This contains the patch for supporting 32-bit compatible ioctls on x86_64 systems. The current x86_64 driver will not work with 32-bit applications. Signed-off-by: Jordan Hargave <jordan_hargrave@dell.com> Signed-off-by: Corey Minyard <minyard@acm.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ipmi: use completions, not semaphores, in powerdown codeCorey Minyard2005-06-24
| | | | | | | | Don't use semaphores for IPC in the poweroff code, use completions instead. Signed-off-by: Corey Minyard <minyard@acm.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ipmi: add power cycle capabilityCorey Minyard2005-06-24
| | | | | | | | | | | | | | | | | | | | | | This patch to adds "power cycle" functionality to the IPMI power off module ipmi_poweroff. It also contains changes to support procfs control of the feature. The power cycle action is considered an optional chassis control in the IPMI specification. However, it is definitely useful when the hardware supports it. A power cycle is usually required in order to reset a firmware in a bad state. This action is critical to allow remote management of servers. The implementation adds power cycle as optional to the ipmi_poweroff module. It can be modified dynamically through the proc entry mentioned above. During a power down and enabled, the power cycle command is sent to the BMC firmware. If it fails either due to non-support or some error, it will retry to send the command as power off. Signed-off-by: Christopher A. Poblete <Chris_Poblete@dell.com> Signed-off-by: Corey Minyard <minyard@acm.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ipmi: timer shutdown cleanupCorey Minyard2005-06-24
| | | | | | | | Clean up the timer shutdown handling in the IPMI driver. Signed-off-by: Corey Minyard <minyard@acm.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2005-06-23
|\
| * [PATCH] ARM: 2728/1: S3C2410 - fix constant warning on serial device nameBen Dooks2005-06-23
| | | | | | | | | | | | | | | | | | Patch from Ben Dooks Remove warning of casting `const char *` to a `char *` type. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [PATCH] ARM: 2721/1: remove reliance on udivdi3 for pxafb driverNicolas Pitre2005-06-23
| | | | | | | | | | | | | | Patch from Nicolas Pitre Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | Merge master.kernel.org:/home/rmk/linux-2.6-serialLinus Torvalds2005-06-23
|\ \
| * | [PATCH] Serial: Bugs are not capabilitiesRussell King2005-06-23
| | | | | | | | | | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [PATCH] Serial: Mobility's 16550A ports need a helping handRussell King2005-06-23
| | | | | | | | | | | | | | | | | | | | | | | | The Mobility 16550A serial ports don't behave the same as standard 16550A ports, and need a helping hand to get them going once the transmitter has drained and been disabled. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [PATCH] Serial: Convert 8250 revision-based bug fixes to bug bitmaskRussell King2005-06-23
| |/ | | | | | | | | | | | | | | | | For some 8250 port types, we used to check the type of the port, and then determine whether the chip revision means the device is buggy. Instead, introduce a bit array, and set the appropriate bit(s) when we discover a buggy device. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] better USB_MON dependenciesAdrian Bunk2005-06-23
| | | | | | | | | | | | | | This makes the USB_MON less confusing. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/paulus/ppc64-2.6Linus Torvalds2005-06-23
|\ \
| * | [PATCH] ppc64: add a watchdog driver for rtasUtz Bacher2005-06-22
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a watchdog using the RTAS OS surveillance service. This is provided as a simpler alternative to rtasd. The added value is that it works with standard watchdog client programs and can therefore also do user space monitoring. On BPA, rtasd is not really useful because the hardware does not have much to report with event-scan. The driver should also work on other platforms that support the OS surveillance rtas calls. Signed-off-by: Arnd Bergmann <arndb@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [PATCH] Convert users to tty_unregister_ldisc()Alexey Dobriyan2005-06-23
| | | | | | | | | | | | | | | | tty_register_ldisc(N_FOO, NULL) => tty_unregister_ldisc(N_FOO) Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] Introduce tty_unregister_ldisc()Alexey Dobriyan2005-06-23
| | | | | | | | | | | | | | | | | | It's a bit strange to see tty_register_ldisc call in modules' exit functions. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] pwc-uncompress warning fixAndrew Morton2005-06-23
| | | | | | | | | | | | | | | | drivers/usb/media/pwc/pwc-uncompress.c: In function `pwc_decompress': drivers/usb/media/pwc/pwc-uncompress.c:140: warning: unreachable code at beginning of switch statement Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] IDE CD reports current speedEric Piel2005-06-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current ide-cd driver reports the CDROM speed (as found in /proc/sys/dev/cdrom/info) as the current speed when loading the driver. Changing the speed of the cdrom drive (by "eject -x" for instance) doesn't update the speed reported by the kernel. Updating the info could be valuable for the user as it's the only way to know if the drive accepted the request or discarded it. It could even be used to list all the available speeds of the drive. The attached patch modifies the ide-cd driver so that after every speed change request the new speed is updated. Please note that the actual modification is very little but I had to touch quite a few lines in order to avoid to pre-declare the sub-functions. Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net> Acked-by: Jens Axboe <axboe@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] dpt_i2o: fix waitqueue abuseAndrew Morton2005-06-23
| | | | | | | | | | | | | | | | The driver plays with waitqueue internals and fails to compile after Ben's "aio: make wait_queue ->task ->private" patch. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] PCDP: handle tables that don't supply baud rateBjorn Helgaas2005-06-23
| | | | | | | | | | | | | | | | | | | | | | | | | | The HCDP specs (i.e., PCDP revision < 3) allow zero as a default value for baud rate and data bits. So if firmware doesn't supply them, let early_serial_console_init() probe for them rather than telling it the baud rate is zero. Also, update the URL for the PCDP spec. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] block: add unlocked_ioctl support for block devicesArnd Bergmann2005-06-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch allows block device drivers to convert their ioctl functions to unlocked_ioctl() like character devices and other subsystems. All functions that were called with the BKL held before are still used that way, but I would not be surprised if it could be removed from the ioctl functions in drivers/block/ioctl.c themselves. As a side note, I found that compat_blkdev_ioctl() acquires the BKL as well, which looks like a bug. I have checked that every user of disk->fops->compat_ioctl() in the current git tree gets the BKL itself, so it could easily be removed from compat_blkdev_ioctl(). Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] yenta TI: turn off interrupts during card power-on #2Daniel Ritz2005-06-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - make boot-up card recognition more reliable (ie. redo interrogation always if there is no valid 'card inserted' state) (and yes, i saw it happening on an o2micro controller that both CB_CBARD and CB_16BITCARD bits were set at the same time) - also redo interrogation before probing the ISA interrupts. it's safer to do the probing with the socket in a clean state. - make card insert detect more reliable. yenta_get_status() now returns SS_PENDING as long as the card is not completley inserted and one of the voltage bits is set. also !CB_CBARD doesn't mean CB_16BITCARD. there is CB_NOTACARD as well, so make an explicit check for CB_16BITCARD. - for TI bridges: disable IRQs during power-on. in all-serial and tied interrupt mode the interrupts are always disabled for single-slot controllers. for two-slot contollers the disabling is only done when the other slot is empty. to force disabling there is a new module parameter now: pwr_irqs_off=Y (which is a regression for working setups. that's why it's an option, only use when required) - modparm to disable ISA interrupt probing (isa_probe, defaults to on) - remove unneeded code/cleanups (ie. merge yenta_events() into yenta_interrupts()) Signed-off-by: Daniel Ritz <daniel.ritz@gmx.ch> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] Potential null pointer dereference in amiga serial driverTINNES Julien RD-MAPS-ISS2005-06-23
| | | | | | | | | | | | | | A pointer is dereferenced before it is null-checked. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] Improve CD/DVD packet driver write performancePeter Osterlund2005-06-23
| | | | | | | | | | | | | | | | | | | | This patch improves write performance for the CD/DVD packet writing driver. The logic for switching between reading and writing has been changed so that streaming writes are no longer interrupted by read requests. Signed-off-by: Peter Osterlund <petero2@telia.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] ide-floppy adjustmentsJan Beulich2005-06-23
| | | | | | | | | | | | | | | | | | | | Fix a build problem when IDEFLOPPY_DEBUG_BUGS is turned off, and eliminate an access to memory that is no longer allocated (causing systems to fail booting when CONFIG_DEBUG_PAGEALLOC is turned on). Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] parport: NetMos nm9855 fixMartin Schitter2005-06-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | kernel 2.6.12-rc2 adopted some code by Bjorn Helgaas supporting NetMos combo controller cards. this implementation doesn't work for nm9855 based cards! there are two reasons: a) the module 'parport_pc' doesn't want to give the resonsibility for the netmos_9855 to 'parport_serial' and can not handle the serial lines -- trivial to fix... http://lists.infradead.org/pipermail/linux-parport/2005-February/000250.html http://lkml.org/lkml/2005/3/24/199 b) the support for the nm9855 in 'parport_serial' still doesn't work because of wrong assumptions about the relevant BARs port address layout for this chip: 0000:00:09.0 Communication controller: NetMos Technology PCI 9855 Multi-I/O Controller (rev 01) (= 9710:9855) Subsystem: LSI Logic / Symbios Logic 1P4S (= 1000:0014) Flags: medium devsel, IRQ 177 I/O ports at a800 [size=8] (= parport) I/O ports at a400 [size=8] I/O ports at a000 [size=8] (= serial) I/O ports at 9800 [size=8] (= serial) I/O ports at 9400 [size=8] (= serial) I/O ports at 9000 [size=16] (= serial) the following patch will fix the problem. Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] Altix: shut off xmit intr if done xmittingPat Gefre2005-06-23
| | | | | | | | | | | | | | | | Small mod to shut off the xmit interrupt if we have nothing to transmit. Signed-off-by: Patrick Gefre <pfg@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] remove duplicate get_dentry functions in various placesChristoph Hellwig2005-06-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Various filesystem drivers have grown a get_dentry() function that's a duplicate of lookup_one_len, except that it doesn't take a maximum length argument and doesn't check for \0 or / in the passed in filename. Switch all these places to use lookup_one_len. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Greg KH <greg@kroah.com> Cc: Paul Jackson <pj@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] add check to /proc/devices read routinesNeil Horman2005-06-23
| | | | | | | | | | | | | | | | | | | | | | | | | | Patch to add check to get_chrdev_list and get_blkdev_list to prevent reads of /proc/devices from spilling over the provided page if more than 4096 bytes of string data are generated from all the registered character and block devices in a system Signed-off-by: Neil Horman <nhorman@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] optimise loop driver a bitNick Piggin2005-06-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Looks like locking can be optimised quite a lot. Increase lock widths slightly so lo_lock is taken fewer times per request. Also it was quite trivial to cover lo_pending with that lock, and remove the atomic requirement. This also makes memory ordering explicitly correct, which is nice (not that I particularly saw any mem ordering bugs). Test was reading 4 250MB files in parallel on ext2-on-tmpfs filesystem (1K block size, 4K page size). System is 2 socket Xeon with HT (4 thread). intel:/home/npiggin# umount /dev/loop0 ; mount /dev/loop0 /mnt/loop ; /usr/bin/time ./mtloop.sh Before: 0.24user 5.51system 0:02.84elapsed 202%CPU (0avgtext+0avgdata 0maxresident)k 0.19user 5.52system 0:02.88elapsed 198%CPU (0avgtext+0avgdata 0maxresident)k 0.19user 5.57system 0:02.89elapsed 198%CPU (0avgtext+0avgdata 0maxresident)k 0.22user 5.51system 0:02.90elapsed 197%CPU (0avgtext+0avgdata 0maxresident)k 0.19user 5.44system 0:02.91elapsed 193%CPU (0avgtext+0avgdata 0maxresident)k After: 0.07user 2.34system 0:01.68elapsed 143%CPU (0avgtext+0avgdata 0maxresident)k 0.06user 2.37system 0:01.68elapsed 144%CPU (0avgtext+0avgdata 0maxresident)k 0.06user 2.39system 0:01.68elapsed 145%CPU (0avgtext+0avgdata 0maxresident)k 0.06user 2.36system 0:01.68elapsed 144%CPU (0avgtext+0avgdata 0maxresident)k 0.06user 2.42system 0:01.68elapsed 147%CPU (0avgtext+0avgdata 0maxresident)k Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] create a kstrdup library functionPaulo Marques2005-06-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch creates a new kstrdup library function and changes the "local" implementations in several places to use this function. Most of the changes come from the sound and net subsystems. The sound part had already been acknowledged by Takashi Iwai and the net part by David S. Miller. I left UML alone for now because I would need more time to read the code carefully before making changes there. Signed-off-by: Paulo Marques <pmarques@grupopie.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] blk: unplug laterNick Piggin2005-06-23
| | | | | | | | | | | | | | | | | | get_request_wait needn't unplug the device immediately. Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Jens Axboe <axboe@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-20 02:28:34 -0500