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2007-02-17ide: add ide_use_fast_pio() helper (v3)Bartlomiej Zolnierkiewicz
* add ide_use_fast_pio() helper for use by host drivers * add DMA capability and hwif->autodma checks to ide_use_dma() - au1xxx-ide/it8213/it821x drivers didn't check for (id->capability & 1) [ for the IT8211/2 in SMART mode this check shouldn't be made but since in it821x_fixups() we set DMA bit explicitly: if(strstr(id->model, "Integrated Technology Express")) { /* In raid mode the ident block is slightly buggy We need to set the bits so that the IDE layer knows LBA28. LBA48 and DMA ar valid */ id->capability |= 3; /* LBA28, DMA */ we are better off using generic helper if we can ] - ide-cris driver didn't set ->autodma [ before the patch hwif->autodma was only checked in the chipset specific hwif->ide_dma_check implementations, for ide-cris it is cris_dma_check() function so there no behavior change here ] v2: * updated patch description (thanks to Alan Cox for the feedback) v3: * updated for scc_pata driver Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-17ide: unexport ide_set_xfer_rate() (v2)Bartlomiej Zolnierkiewicz
In cmd64x, siimage and scc_pata drivers: * don't set drive->init_speed as it should be already set by successful execution of ide_set_xfer_rate() * use hwif->speedproc functions directly Above changes allows removal of EXPORT_SYMBOL_GPL(ide_set_xfer_rate). v2: * updated for scc_pata driver Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-17ide: remove ide_drive_t.usageBartlomiej Zolnierkiewicz
This field is no longer used by the core IDE code so fix ide-{disk,floppy} drivers to keep openers count in the driver specific objects and remove it from ide-{cd,scsi,tape} drivers (it was write-only). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-17ide: remove ide_pci_device_t tables with only one entryBartlomiej Zolnierkiewicz
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-17ide: remove write-only ide_hwif_t.no_dsc flagBartlomiej Zolnierkiewicz
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-17ide: remove write-only ide_pio_data_t.blacklistedBartlomiej Zolnierkiewicz
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-17sis5513: sis5513_config_xfer_rate() cleanupBartlomiej Zolnierkiewicz
* remove bogus comment for sis5513_config_xfer_rate() * there is no need to call config_drive_art_rwp() because it is called by config_art_rwp_pio() * remove needless wrapper * remove stale "TODO" comment (IDE core should provide generic tuning code) Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-17piix: cleanupBartlomiej Zolnierkiewicz
* disable DMA masks if no_piix_dma is set and remove now not needed no_piix_dma_check from piix_config_drive_for_dma() * there is no need to read register 0x55 in init_hwif_piix() * move cable detection code to piix_cable_detect() * remove unreachable 82371MX code from init_hwif_piix() Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-17svwks: small cleanupBartlomiej Zolnierkiewicz
* remove redundant svwks_ide_dma_end() [ __ide_dma_end() is used by default ] * remove init_dma_svwks() so the default ide_setup_dma() function is used [ init_setup_csb6() takes care of not initializing disabled channels ] Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-17cs5530: small cleanupBartlomiej Zolnierkiewicz
* BUG() on unknown DMA mode in cs5530_config_dma() * there is no need to call hwif->ide_dma_host_{off,on}() in cs5530_config_dma() because hwif->ide_dma_host_{off,on}() is called by hwif->ide_dma_off_{quietly,on}() Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-17hpt366: remove redundant check from init_dma_hpt366()Bartlomiej Zolnierkiewicz
->init_dma() cannot be called with dmabase == 0 (see drivers/ide/setup-pci.c) Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-17trm290: remove redundant CONFIG_BLK_DEV_IDEDMA #ifdef-sBartlomiej Zolnierkiewicz
In drivers/ide/Kconfig BLK_DEV_TRM290 depends on BLK_DEV_IDEDMA_PCI (on which is BLK_DEV_IDEDMA dependant on). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-17au1xxx-ide: remove dead codeBartlomiej Zolnierkiewicz
'speed' is always equal to 'mode' when ide_config_drive_speed() is called Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-17pdc202xx_old: remove dead codeBartlomiej Zolnierkiewicz
CONFIG_PDC202XX_MASTER config option doesn't exist Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-17drivers/ide: PATA driver for CellebKou Ishizaki
This is the patch (based on 2.6.19-rc4) for PATA controller of Toshiba Cell reference set(Celleb). The reference set consists of Cell, 512MB memory, Super Companion Chip(SCC) and some peripherals such as HDD, GbE, etc. You can see brief explanation and picture of Cell reference set at following URLs. http://www.toshiba.co.jp/about/press/2005_09/pr2001.htm http://cell-industries.com/toshiba_announces.php We use a drivers/ide driver because its design is more suitable for SCC IDE controller than libata driver. Since SCC supports only 32bit read/write, we must override many callbacks of ata_port_operations by modifying generic helpers. Each time the libata common code is updated, we must update those modified helpers. It is very hard for us. But we will try to implement the libata driver as needed. Signed-off-by: Kou Ishizaki <kou.ishizaki at toshiba.co.jp> Signed-off-by: Akira Iguchi <akira2.iguchi at toshiba.co.jp> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-17sl82c105: DMA support fixesSergei Shtylyov
Fix a number of issues with the DMA support code: - driver claims support for all SW/MW DMA modes while supporting only MWDMA2; - ide_dma_check() method tries to enable DMA on the "known good" drives which don't support MWDMA2; - ide_dma_on() method upon failure to set drive to MWDMA2 re-tunes already tuned PIO mode and calls ide_dma_off() method instead of returning error; - ide_dma_off() method sets drive->current_speed while it doesn't actually change (only the PIO timings are re-loaded into the chip's registers); - init_hwif() method forcibly sets/resets both "drive DMA capable" bits while this is properly handled by ide_dma_{on,off}() methods being called later... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-17pdc202xx_old: fix PIO mode setupSergei Shtylyov
Fix the driver's tuneproc() method to always set the PIO mode requested and not pick the best possible one, rename it to pdc202xx_tune_drive(), and change the calls to it accordingly; remove the preceding comment which has nothing to do with the code. Sergei Shtylyov wrote: > The tuneproc() method should take arg 255 for auto-selecting the best PIO > mode, not 5 as it did here + this driver's method always auto-selected instead > of setting the mode it's been told to -- issue typical to drivers/ide/... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-17siimage: PIO1/2 taskfile transfer overclocking fixSergei Shtylyov
Fix two typos found by SiI680A documentation check. They caused the taskfile transfer overclocking: - in PIO mode 1 as 0x2283 must be used for both data and taskfile transfers; - in PIO mode 2 as data and taskfile timings are swapped when writing to the MMIO regs. Fix coding style and trailing whitespace in enclosing statements while at it... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> drivers/ide/pci/siimage.c | 59 ++++++++++++++++++++++------------------------ 1 file changed, 29 insertions(+), 30 deletions(-)
2007-02-17ide: remove clearing bmdma status from cdrom_decode_status() (rev #4)Albert Lee
patch 2/2: Remove clearing bmdma status from cdrom_decode_status() since ATA devices might need it as well. (http://lkml.org/lkml/2006/12/4/201 and http://lkml.org/lkml/2006/11/15/94) Signed-off-by: Albert Lee <albertcc@tw.ibm.com> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: "Adam W. Hawks" <awhawks@us.ibm.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-17ide: clear bmdma status in ide_intr() for ICHx controllers (revised #4)Albert Lee
patch 1/2 (revised): - Fix drive->waiting_for_dma to work with CDB-intr devices. - Do the dma status clearing in ide_intr() and add a new hwif->ide_dma_clear_irq for Intel ICHx controllers. Revised per Alan, Sergei and Bart's advice. Patch against 2.6.20-rc6. Tested ok on my ICH4 and pdc20275 adapters. Please review/apply, thanks. Signed-off-by: Albert Lee <albertcc@tw.ibm.com> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: "Adam W. Hawks" <awhawks@us.ibm.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-17ide-floppy: Fix unformatted media crashAlan Cox
A ZIP or similar with unformatted media will cause crashes when attempts are made to read/write it in some cases. This is because bs_factor is zero and we divide by it causing an oops. As the size of a non-accessible/non-existant media is really a bit of a zen question it doesn't matter if non-existant media is 512 bytes per sector or zero. Setting it to 1 causes us to generate 512 bytes/sector accesses and error properly. Based on a fix found lurking in an ancient bugzilla entry since about 2004 (ugghhh) Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-17atiixp/jmicron/triflex: fix PIO fallbackBartlomiej Zolnierkiewicz
* atiixp: if DMA can't be used atiixp_config_drive_for_dma() should return 0, atiixp_dma_check() will tune the correct PIO mode anyway * jmicron: if DMA can't be used config_chipset_for_dma() should return 0, micron_config_drive_for_dma() will tune the correct PIO mode anyway config_jmicron_chipset_for_pio(drive, !speed) doesn't program device transfer mode for speed != 0 (only wastes some CPU cycles on ide_get_best_pio_mode() call) so remove it * triflex: if DMA can't be used triflex_config_drive_for_dma() should return 0, triflex_config_drive_xfer_rate() will tune correct PIO mode anyway Above changes also fix (theoretical) issue when ->speedproc fails to set device transfer mode (i.e. when ide_config_drive_speed() fails to program it) but one of DMA transfer modes is already enabled on the device by the BIOS. In such scenario ide_dma_enable() will incorrectly return true statement and ->ide_dma_check will try to enable DMA on the device. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-17hpt34x: hpt34x_tune_chipset() (->speedproc) fixBartlomiej Zolnierkiewicz
* remember to clear reg2 bits for the current device before setting mode * remove no longer needed hpt34x_clear_chipset() Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-02-16Merge branch 'for-linus' of git://www.atmel.no/~hskinnemoen/linux/kernel/avr32Linus Torvalds
* 'for-linus' of git://www.atmel.no/~hskinnemoen/linux/kernel/avr32: [AVR32] Use per-controller spi_board_info structures [AVR32] Warn, don't BUG if clk_disable is called too many times [AVR32] Make sure all genclocks have a parent [AVR32] Remove unnecessary sys_nfsservctl conditional [AVR32] Wire up the SysV IPC calls properly [AVR32] Define ioremap_nocache, ioport_map and ioport_unmap [AVR32] Fix prototypes for __raw_writesb and friends
2007-02-16Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgartLinus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgart: [AGPGART] allow drm populated agp memory types cleanups [AGPGART] intel-agp: Use ARRAY_SIZE macro when appropriate [AGPGART] Add agp-type-to-mask-type method missing from some drivers. [AGPGART] Don't try to remap i810 registers on resume. [AGPGART] Allow drm-populated agp memory types [AGPGART] compat ioctl
2007-02-16Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreqLinus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq: [CPUFREQ] Longhaul - Redo Longhaul ver. 2 [CPUFREQ] EPS - Correct 2nd brand test [CPUFREQ] Longhaul - Separate frequency and voltage transition [CPUFREQ] Longhaul - Models of Nehemiah [CPUFREQ] Whitespace fixup [CPUFREQ] Longhaul - Simplier minmult [CPUFREQ] CPU_FREQ_TABLE shouldn't be a def_tristate [CPUFREQ] ondemand governor use new cpufreq rwsem locking in work callback [CPUFREQ] ondemand governor restructure the work callback [CPUFREQ] Rewrite lock in cpufreq to eliminate cpufreq/hotplug related issues [CPUFREQ] Remove hotplug cpu crap [CPUFREQ] Enhanced PowerSaver driver [CPUFREQ] Longhaul - Add VT8235 support [CPUFREQ] Longhaul - Fix guess_fsb function [CPUFREQ] Longhaul - Remove duplicate tables [CPUFREQ] Longhaul - Introduce Nehemiah C [CPUFREQ] fix cpuinfo_cur_freq for CPU_HW_PSTATE [CPUFREQ] Longhaul - Remove "ignore_latency" option
2007-02-16[PATCH] s3c2410fb: fix un-initialised dev fieldBen Dooks
The current driver is not setting the dev field in the private data structure, which can lead to an OOPS if the driver tries to report an error. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Cc: James Simmons <jsimmons@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] ecryptfs: fix forgotten format specifierThomas Hisch
Add format specifier %d for uid in ecryptfs_printk Signed-off-by: Thomas Hisch <t.hisch@gmail.com> Cc: Michael Halcrow <mhalcrow@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] eCryptfs: Reduce stack usage in ecryptfs_generate_key_packet_set()Michael Halcrow
eCryptfs is gobbling a lot of stack in ecryptfs_generate_key_packet_set() because it allocates a temporary memory-hungry ecryptfs_key_record struct. This patch introduces a new kmem_cache for that struct and converts ecryptfs_generate_key_packet_set() to use it. Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] knfsd: stop NFSD writes from being broken into lots of little writes ↵NeilBrown
to filesystem When NFSD receives a write request, the data is typically in a number of 1448 byte segments and writev is used to collect them together. Unfortunately, generic_file_buffered_write passes these to the filesystem one at a time, so an e.g. 32K over-write becomes a series of partial-page writes to each page, causing the filesystem to have to pre-read those pages - wasted effort. generic_file_buffered_write handles one segment of the vector at a time as it has to pre-fault in each segment to avoid deadlocks. When writing from kernel-space (and nfsd does) this is not an issue, so generic_file_buffered_write does not need to break and iovec from nfsd into little pieces. This patch avoids the splitting when get_fs is KERNEL_DS as it is from NFSd. This issue was introduced by commit 6527c2bdf1f833cc18e8f42bd97973d583e4aa83 Acked-by: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Norman Weathers <norman.r.weathers@conocophillips.com> Cc: Vladimir V. Saveliev <vs@namesys.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] knfsd: nfsd4: fix handling of directories without default ACLsJ. Bruce Fields
When setting an ACL that lacks inheritable ACEs on a directory, we should set a default ACL of zero length, not a default ACL with all bits denied. Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] knfsd: nfsd4: acls: avoid unnecessary deniesJ. Bruce Fields
We're inserting deny's between some ACEs in order to enforce posix draft acl semantics which prevent permissions from accumulating across entries in an acl. That's fine, but we're doing that by inserting a deny after *every* allow, which is overkill. We shouldn't be adding them in places where they actually make no difference. Also replaced some helper functions for creating acl entries; I prefer just assigning directly to the struct fields--it takes a few more lines, but the field names provide some documentation that I think makes the result easier understand. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] knfsd: nfsd4: acls: don't return explicit maskJ. Bruce Fields
Return just the effective permissions, and forget about the mask. It isn't worth the complexity. WARNING: This breaks backwards compatibility with overly-picky nfsv4->posix acl translation, as may has been included in some patched versions of libacl. To our knowledge no such version was every distributed by anyone outside citi. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] knfsd: nfsd4: fix error return on unsupported aclJ. Bruce Fields
We should be returning ATTRNOTSUPP, not NOTSUPP, when acls are unsupported. Also fix a comment. Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] knfsd: nfsd4: fix memory leak on kmalloc failure in savememJ. Bruce Fields
The wrong pointer is being kfree'd in savemem() when defer_free returns with an error. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] knfsd: nfsd4: represent nfsv4 acl with array instead of linked listJ. Bruce Fields
Simplify the memory management and code a bit by representing acls with an array instead of a linked list. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] knfsd: nfsd4: simplify nfsv4->posix translationJ. Bruce Fields
The code that splits an incoming nfsv4 ACL into inheritable and effective parts can be combined with the the code that translates each to a posix acl, resulting in simpler code that requires one less pass through the ACL. Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] knfsd: nfsd4: relax checking of ACL inheritance bitsJ. Bruce Fields
The rfc allows us to be more permissive about the ACL inheritance bits we accept: "If the server supports a single "inherit ACE" flag that applies to both files and directories, the server may reject the request (i.e., requiring the client to set both the file and directory inheritance flags). The server may also accept the request and silently turn on the ACE4_DIRECTORY_INHERIT_ACE flag." Let's take the latter option--the ACL is a complex attribute that could be rejected for a wide variety of reasons, and the protocol gives us little ability to explain the reason for the rejection, so erroring out is a user-unfriendly last resort. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] knfsd: nfsd4: fix non-terminated stringJ. Bruce Fields
The server name is expected to be a null-terminated string, so we can't pass in the raw client identifier. What's more, the client identifier is just a binary, not necessarily printable, blob. Let's just use the ip address instead. The server name appears to exist just to help debugging by making some printk's more informative. Note that the string is copies into the rpc client structure, so the pointer to the local variable does not outlive the function call. Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] small irq management simplificationJan Beulich
Use mask_ack_irq() where possible. Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] IRQ kernel-doc fixesRandy Dunlap
Fix kernel-doc warnings in IRQ management. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] genirq: remove IRQ_DISABLEDIngo Molnar
Now that disable_irq() defaults to delayed-disable semantics, the IRQ_DISABLED flag is not needed anymore. Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] genirq: do not mask interrupts by defaultIngo Molnar
Never mask interrupts immediately upon request. Disabling interrupts in high-performance codepaths is rare, and on the other hand this change could recover lost edges (or even other types of lost interrupts) by conservatively only masking interrupts after they happen. (NOTE: with this change the highlevel irq-disable code still soft-disables this IRQ line - and if such an interrupt happens then the IRQ flow handler keeps the IRQ masked.) Mark i8529A controllers as 'never loses an edge'. Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] posix timers: RCU optimization for clock_gettime()Paul E. McKenney
Use RCU to avoid the need to acquire tasklist_lock in the single-threaded case of clock_gettime(). It still acquires tasklist_lock when for a (potentially multithreaded) process. This change allows realtime applications to frequently monitor CPU consumption of individual tasks, as requested (and now deployed) by some off-list users. This has been in Ingo Molnar's -rt patchset since late 2005 with no problems reported, and tests successfully on 2.6.20-rc6, so I believe that it is long-since ready for mainline adoption. [paulmck@linux.vnet.ibm.com: fix exit()/posix_cpu_clock_get() race spotted by Oleg] Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] time: x86_64: re-enable vsyscall support for x86_64john stultz
Cleanup and re-enable vsyscall gettimeofday using the generic clocksource infrastructure. [akpm@osdl.org: cleanup] Signed-off-by: John Stultz <johnstul@us.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@muc.de> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] time: x86_64: convert x86_64 to use GENERIC_TIMEjohn stultz
This patch converts x86_64 to use the GENERIC_TIME infrastructure and adds clocksource structures for both TSC and HPET (ACPI PM is shared w/ i386). [akpm@osdl.org: fix printk timestamps] [akpm@osdl.org: fix printk ckeanups] [akpm@osdl.org: hpet build fix] Signed-off-by: John Stultz <johnstul@us.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@muc.de> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] time: x86_64: split x86_64/kernel/time.c upjohn stultz
In preparation for the x86_64 generic time conversion, this patch splits out TSC and HPET related code from arch/x86_64/kernel/time.c into respective hpet.c and tsc.c files. [akpm@osdl.org: fix printk timestamps] [akpm@osdl.org: cleanup] Signed-off-by: John Stultz <johnstul@us.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@muc.de> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] time: x86_64: hpet_address cleanupjohn stultz
In preparation for supporting generic timekeeping, this patch cleans up x86-64's use of vxtime.hpet_address, changing it to just hpet_address as is also used in i386. This is necessary since the vxtime structure will be going away. Signed-off-by: John Stultz <johnstul@us.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@muc.de> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] generic: vsyscall-gtod support for GENERIC_TIMEjohn stultz
Provides generic infrastructure for vsyscall-gtod. [akpm@osdl.org: cleanup] Signed-off-by: John Stultz <johnstul@us.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@muc.de> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[PATCH] Add SysRq-Q to print timer_list debug infoIngo Molnar
Add SysRq-Q to print pending timers and other timer info. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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