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* [PATCH] feature removal of io_remap_page_range()Randy Dunlap2005-09-13
| | | | | | | | | As written in Documentation/feature-removal-schedule.txt, remove the io_remap_page_range() kernel API. Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] drivers/video: Replace custom macro with isdigit()Tobias Klauser2005-09-13
| | | | | | | | | Replace the custom CHAR_IS_NUM() macro with isdigit() from <linux/ctype.h> Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch> Acked-by: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbcon: constify font dataJan Beulich2005-09-13
| | | | | | | | | | | | const-ify the font control structures and data, to make somewhat better guarantees that these are not modified anywhere in the kernel. Specifically for a kernel debugger to share this information from the normal kernel code, such a guarantee seems rather desirable. Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: "Antonino A. Daplas" <adaplas@hotpop.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] v4l: experimental Sliced VBI API supportMauro Carvalho Chehab2005-09-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds all defines, ioctls and structs needed for the sliced VBI API VBI = Vertical Blank Interval. It is related with the way TV signals work. It sends a line, then, it has a retrace time to allow the tube to move electrons to the beginning of the next line. This was the main reason at the beginning of analog B&W TV. There is a lot of bandwidth lost on VBI. So, lots of TV systems use it to send other information such as Closed Captions and Teletext. Also, broadcasters uses this as a channel to exchange information from the content producer to their subsidiaries at each city. There's already a raw VBI interface on V4L2 api, used for Closed Captions and Teletext. The decoding is doing at userlevel space and it is mostly for analog TV signals, non encoded. Encoded signals (MPEG, for example), may need also to transmit other information (like, for example, display aspect, i.e. 4x3, widescreen...). Sliced VBI interface is a method to allow the video stream to transmit this kind of information. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] nfsd4: move replay_ownerNeil Brown2005-09-13
| | | | | | | | | | It seems more natural to move the setting of the replay_owner into the relevant procedure instead of doing it in nfsv4_proc_compound. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] SharpSL: Add new ARM PXA machines Spitz and Borzoi with partial ↵Richard Purdie2005-09-13
| | | | | | | | | | | | | | | | | | Akita Support Add the platform support code for two new Sharp Zaurus Models, Spitz (SL-C3000) and Borzoi (SL-C3100). This patch also adds most of the foundations for Akita (SL-C1000) Support. The missing link for Akita is the driver for its I2C io expander. Once this has been finished, the missing Kconfig option and machine declaration can easily be added to this code. Signed-Off-by: Richard Purdie <rpurdie@rpsys.net> Cc: Vojtech Pavlik <vojtech@suse.cz> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] SharpSL: Abstract model specifics from Corgi Backlight driverRichard Purdie2005-09-13
| | | | | | | | | | | | | | Separate out the Sharp Zaurus c7x0 series specific code from the Corgi backlight driver. Abstract model/machine specific functions to corgi_lcd.c via sharpsl.h This enables the driver to be used by the Zaurus cxx00 series. Signed-Off-by: Richard Purdie <rpurdie@rpsys.net> Cc: Vojtech Pavlik <vojtech@suse.cz> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] SharpSL: Abstract c7x0 specifics from Corgi Touchscreen driverRichard Purdie2005-09-13
| | | | | | | | | | | | | | | Separate out the Sharp Zaurus c7x0 series specific code from the Corgi Touchscreen driver. Use the new functions in corgi_lcd.c via sharpsl.h for hsync handling and pass the IRQ as a platform device resource. Move a function prototype into the w100fb header file where it belongs. This enables the driver to be used by the Zaurus cxx00 series. Signed-Off-by: Richard Purdie <rpurdie@rpsys.net> Cc: Vojtech Pavlik <vojtech@suse.cz> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] SharpSL: Add cxx00 support to the Corgi LCD driverRichard Purdie2005-09-13
| | | | | | | | | | | | | | | | The same LCD is present on both the Sharp Zaurus c7x0 series and the cxx00 but with different framebuffer drivers (w100fb vs. pxafb). This patch adds support for the cxx00 series to the LCD driver. It also adds some LCD to touchscreen interface logic needed by the touchscreen driver to prevent interference problems, the idea being to keep all the ugly code in one place leaving the drivers themselves clean. sharpsl.h is used to provide the abstraction. Signed-Off-by: Richard Purdie <rpurdie@rpsys.net> Cc: Vojtech Pavlik <vojtech@suse.cz> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] SharpSL: Abstract c7x0 specifics from Corgi SSPRichard Purdie2005-09-13
| | | | | | | | | | | | | | | | | | | | | | | Sharp's newer range of Zaurus clamshell handhelds, the cxx00's are similar to the c7x0 series yet different. This patch series abstracts the differences and generates a set of common drivers that support both series of devices. It then adds machine support for Spitz (SL-C3000) and Borzoi (SL-C3100). Hooks for Akita (SL-C1000) differences are also added. The I2C driver for its IO expander is the only missing piece. This patch: Separate out the Sharp Zaurus c7x0 series specific code from corgi_ssp.c so that other models such as the cxx00's can share it. Create sharpsl.h which will be used to abstract machine/model specifics. This enables the driver to be used by the Zaurus cxx00 series. Signed-Off-by: Richard Purdie <rpurdie@rpsys.net> Cc: Vojtech Pavlik <vojtech@suse.cz> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] pktcdvd: BUG_ON cleanupsPeter Osterlund2005-09-13
| | | | | | | | | Remove some redundant BUG_ON() statements in pktcdvd and move one run-time check to compile-time. 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] cciss: new controller pci/subsystem idsMike Miller2005-09-13
| | | | | | | | | | | | | This patch adds new PCI and subsystem ID's that finally made the spec. It also include a name change for one controller. I know there's a lot of duplicat names but the fw folks wanted this for the different implementations. Even though the same ASIC is used it may be embedded on some platforms, standup card in others, and a mezzanine in other servers. Signed-off-by: Mike Miller <mike.miller@hp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] set_current_state() commentaryAndrew Morton2005-09-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Explain the mysteries of set_current_state(). Quoth Linus: The scheduler itself never needs the memory barrier at all. The barrier is needed only if the user itself ends up testing some other thing afterwards, ie if you have set_process_state(TASK_INTERRUPTIBLE); if (still_need_to_sleep()) schedule(); then the "still_need_to_sleep()" thing may test flags and wakeup events, and then you _may_ want to (and often do) make sure that the write of TASK_INTERRUPTIBLE is serialized wrt the reads of any wakeup data (since the wakeup may have happened on another CPU). So the comment is somewhat wrong. We don't really _care_ whether the state propagates out to other CPU's since all of our actions are purely local, and there is nothing we do that is conditional on any other CPU: we're going to sleep unconditionally, and the scheduler only cares about _our_ state, not about somebody elses state. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Make BUILD_BUG_ON fail at compile time.Andi Kleen2005-09-13
| | | | | | | | | | | | | | | Force a compiler error instead of a link error, because they are easier to track down. Idea stolen from code by Jan Beulich <jbeulich@novell.com> If the argument to BUILD_BUG_ON evaluates to non-zero the compiler will do: t.c:6: error: size of array `type name' is negative (surprised that gcc doesn't have an extension for this) Signed-off-by: "Andi Kleen" <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: remove use of asm/segment.hKumar Gala2005-09-13
| | | | | | | | | | Removed ppc32 architecture specific users of asm/segment.h and asm-ppc/segment.h itself Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] m68knommu: optimized local_irq_disable, and platform reboot codeGreg Ungerer2005-09-12
| | | | | | | | | | | | Switch to a space optimized version of local_irq_disable() for ColdFire platforms. Also add reboot support for the Freescale M5272 platform. Patch originally submitted by Philippe De Muyter <phdm@macqel.be>. Add reboot support for the Freescale M523x ColdFire platform. Patch originally submitted by Jate Sujjavanich. Signed-off-by: Greg Ungerer <gerg@uclinux.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] m68knommu: implement scatter/gather support macrosGreg Ungerer2005-09-12
| | | | | | | | Implement the scattergather support macros for m68knommu targets. Patch originally submitted by Leon Woestenberg <leonw@mailcan.com>. Signed-off-by: Greg Ungerer <gerg@uclinux.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] m68knommu: fix cache actions for ColdFire 5249, 527x and 528x processorsGreg Ungerer2005-09-12
| | | | | | | | | | Add better support for flushing the cache's on some ColdFire processors. The 5249 cache code is now enabled (it was stubbed out), it really is needed. Add support for the 527x and 528x families - we only use the simple instruction cache on them. Signed-off-by: Greg Ungerer <gerg@uclinux.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-for-linus-2.6 Linus Torvalds2005-09-12
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| * [SCSI] Alter the scsi_add_device() API to conform to what users expectJames Bottomley2005-09-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The original API returned either an ERR_PTR() or a refcounted sdev. Unfortunately, if it's successful, you need to do a scsi_device_put() on the sdev otherwise the refcounting is wrong. Everyone seems to expect that scsi_add_device() should be callable without doing the ref put, so alter the API so it is (we still have __scsi_add_device with the original behaviour). The only actual caller that needs altering is the one in firewire ... not because it gets this right, but because it acts on the error if one is returned. Acked-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * [SCSI] fc_transport: Generalize WWN to u64 interger conversions.Andrew Vasquez2005-09-10
| | | | | | | | | | | | | | | | | | | | | | On some platforms the hard-casting of 8 byte node_name and port_name arrays to an u64 would cause unaligned-access warnings. Generalize the conversions with a transport helper function which performs consistent shifting of WWN bytes. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * [SCSI] SAS transport classChristoph Hellwig2005-09-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The SAS transport class contains common code to deal with SAS HBAs, an aproximated representation of SAS topologies in the driver model, and various sysfs attributes to expose these topologies and managment interfaces to userspace. In addition to the basic SCSI core objects this transport class introduces two additional intermediate objects: The SAS PHY as represented by struct sas_phy defines an "outgoing" PHY on a SAS HBA or Expander, and the SAS remote PHY represented by struct sas_rphy defines an "incoming" PHY on a SAS Expander or end device. Note that this is purely a software concept, the underlying hardware for a PHY and a remote PHY is the exactly the same. There is no concept of a SAS port in this code, users can see what PHYs form a wide port based on the port_identifier attribute, which is the same for all PHYs in a port. This submission doesn't handle hot-plug addition or removal of SAS devices and thus doesn't do scanning in a workqueue yet, that will be added in phase2 after this submission. In a third phase I will add additional managment infrastructure. I think this submission is ready for 2.6.14, but additional comments are of course very welcome. I'd like to thanks James Smart a lot for his very useful input on the design. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Linus Torvalds2005-09-12
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| * | [NETROM]: Introduct stuct nr_privateRalf Baechle2005-09-12
| | | | | | | | | | | | | | | | | | | | | | | | NET/ROM's virtual interfaces don't have a proper private data structure yet. Create struct nr_private and put the statistics there. Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETROM]: Implement G8PZT Circuit reset for NET/ROMRalf Baechle2005-09-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | NET/ROM is lacking a connection reset like TCP's RST flag which at times may result in a connecting having to slowly timing out instead of just being reset. An earlier attempt to reset the connection by sending a NR_CONNACK | NR_CHOKE_FLAG transport was inacceptable as it did result in crashes of BPQ systems. An alternative approach of introducing a new transport type 7 (NR_RESET) has be implemented several years ago in Paula Jayne Dowie G8PZT's Xrouter. Implement NR_RESET for Linux's NET/ROM but like any messing with the state engine consider this experimental for now and thus control it by a sysctl (net.netrom.reset) which for the time being defaults to off. Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [AX.25]: Add descriptions to constantsRalf Baechle2005-09-12
| | | | | | | | | | | | | | | | | | | | | Comment the names used for the AX.25 state machine. Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [AX.25]: Add more PIDsRalf Baechle2005-09-12
| | | | | | | | | | | | | | | | | | | | | | | | Add a few more PID definitions. AX.25 PIDs are the equivalent to IP protocol numbers. Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [AX.25]: Rename ax25_encapsulate to ax25_hard_headerRalf Baechle2005-09-12
| | | | | | | | | | | | | | | | | | | | | | | | Rename ax25_encapsulate to ax25_hard_header which these days more accurately describes what the function is supposed to do. Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NET]: Add netlink connector.Evgeniy Polyakov2005-09-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kernel connector - new userspace <-> kernel space easy to use communication module which implements easy to use bidirectional message bus using netlink as it's backend. Connector was created to eliminate complex skb handling both in send and receive message bus direction. Connector driver adds possibility to connect various agents using as one of it's backends netlink based network. One must register callback and identifier. When driver receives special netlink message with appropriate identifier, appropriate callback will be called. From the userspace point of view it's quite straightforward: socket(); bind(); send(); recv(); But if kernelspace want to use full power of such connections, driver writer must create special sockets, must know about struct sk_buff handling... Connector allows any kernelspace agents to use netlink based networking for inter-process communication in a significantly easier way: int cn_add_callback(struct cb_id *id, char *name, void (*callback) (void *)); void cn_netlink_send(struct cn_msg *msg, u32 __groups, int gfp_mask); struct cb_id { __u32 idx; __u32 val; }; idx and val are unique identifiers which must be registered in connector.h for in-kernel usage. void (*callback) (void *) - is a callback function which will be called when message with above idx.val will be received by connector core. Using connector completely hides low-level transport layer from it's users. Connector uses new netlink ability to have many groups in one socket. [ Incorporating many cleanups and fixes by myself and Andrew Morton -DaveM ] Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | [PATCH] USB: fix usbdevice_fs header breakageHarald Welte2005-09-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [USBDEVFS] fix inclusion of <linux/compat.h> to avoud header mess Without moving the include of compat.h down, userspace programs that use usbdevice_fs.h end up including half the kernel includes (and eventually fail to compile). Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | | [PATCH] x86-64: clean up local_add/sub argumentsAndi Kleen2005-09-12
| | | | | | | | | | | | Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] x86-64: i386/x86-64: Fix time going twice as fast problem on ATI ↵Chuck Ebbert2005-09-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Xpress chipsets Original patch from Bertro Simul This is probably still not quite correct, but seems to be the best solution so far. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] x86-64: reduce x86-64 bug frame by 4 bytesJan Beulich2005-09-12
| | | | | | | | | | | | | | | | | | | | | | | | As mentioned before, the size of the bug frame can be further reduced while continuing to use instructions to encode the information. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] x86-64: Make dmi_find_device for !DMI case inlineAndi Kleen2005-09-12
| | | | | | | | | | | | | | | | | | | | | Otherwise it will generate warnings and be generated many times. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] x86-64: Lose constraints on cmpxchgJan Beulich2005-09-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | While only cosmetic for x86-64, this adjusts the cmpxchg code appearantly inherited from i386 to use more generic constraints. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] x86-64: Declare NMI_VECTOR and handle it in the IPI sending code.Jan Beulich2005-09-12
| | | | | | | | | | | | | | | Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] x86-64: Remove unused vxtime.hz fieldAndi Kleen2005-09-12
| | | | | | | | | | | | | | | Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] x86-64: Set the stack pointer correctly in init_thread and init_tssAndi Kleen2005-09-12
| | | | | | | | | | | | | | | Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] x86-64: Safe interrupts in oops_begin/endJan Beulich2005-09-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | Rather than blindly re-enabling interrupts in oops_end(), save their state in oope_begin() and then restore that state. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] x86-64: Merge msr.c with i386 versionAndi Kleen2005-09-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The only difference was the inline assembly, so move that into asm/msr.h and merge with the i386 version. This adds some missing sysfs support code to x86-64. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] x86-64: Fix CFI informationJan Beulich2005-09-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Being the foundation for reliable stack unwinding, this fixes CFI unwind annotations in many low-level x86_64 routines, plus a config option (available to all architectures, and also present in the previously sent patch adding such annotations to i386 code) to enable them separatly rather than only along with adding full debug information. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] x86-64: Add dma_sync_single_range_for_{cpu,device}Andi Kleen2005-09-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | Currently just defined to their non range parts. Pointed out by John Linville Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] Replace extern inline with static inline in asm-x86_64/*Adrian Bunk2005-09-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | They should be identical in the kernel now, but this makes it consistent with other code. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] Increase nodemap hash.Nakul Saraiya2005-09-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | Needed for some newer Opteron systems with E stepping and memory relocation enabled. The node addresses are different in lower bits now so the nodemap hash function needs to be enlarged. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] x86-64: Fix off by one in pfn_validJim Paradis2005-09-12
| | | | | | | | | | | | | | | | | | | | | When I gave proposed the fix to pfn_valid() for RHEL4, Stephen Tweedie's sharp eyes caught this: Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] i386: add memory clobbers to syscall macrosAndi Kleen2005-09-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As noted by matz@suse.de The problem is, that on i386 the syscallN macro is defined like so: long __res; \ __asm__ volatile ("int $0x80" \ : "=a" (__res) \ : "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \ "d" ((long)(arg3)),"S" ((long)(arg4)),"D" ((long)(arg5))); \ If one of the arguments (in the _llseek syscall it's the arg4) is a pointer which the syscall is expected to write to (to the memory pointed to by this ptr), then this side-effect is not captured in the asm. If anyone uses this macro to define it's own version of the syscall (sometimes necessary when not using glibc) and it's inlined, then GCC doesn't know that this asm write to "*dest", when called like so for instance: out = 1; llseek (fd, bla, blubb, &out, trara) use (out); Here nobody tells GCC that "out" actually is written to (just a pointer to it is passed to the asm). Hence GCC might (and in the above bug did) copy-propagate "1" into the second use of "out". The easiest solution would be to add a "memory" clobber to the definition of this syscall macro. As this is a syscall, it shouldn't inhibit too many optimizations. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] x86-64: Increase TLB flush array sizeAndi Kleen2005-09-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The generic TLB flush functions kept upto 506 pages per CPU to avoid too frequent IPIs. This value was done for the L1 cache of older x86 CPUs, but with modern CPUs it does not make much sense anymore. TLB flushing is slow enough that using the L2 cache is fine. This patch increases the flush array on x86-64 to cache 5350 pages. That is roughly 20MB with 4K pages. It speeds up large munmaps in multithreaded processes on SMP considerably. The cost is roughly 42k of memory per CPU, which is reasonable. I only increased it on x86-64 for now, but it would probably make sense to increase it everywhere. Embedded architectures with SMP may keep it smaller to save some memory per CPU. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] x86-64: Don't include config.h in asm/timex.hAndi Kleen2005-09-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | asm-x86-64/timex.h does not reference CONFIG constants. Do not need to include config.h. Signed-off-by: Grant Grundler <iod00d@hp.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] x86-64: Some cleanup and optimization to the processor data area.Andi Kleen2005-09-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | - Remove unused irqrsp field - Remove pda->me - Optimize set_softirq_pending slightly Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] x86-64: Make remote TLB flush more scalableAndi Kleen2005-09-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of using a global spinlock to protect the state of the remote TLB flush use a lock and state for each sending CPU. To tell the receiver where to look for the state use 8 different call vectors. Each CPU uses a specific vector to trigger flushes on other CPUs. Depending on the received vector the target CPUs look into the right per cpu variable for the flush data. When the system has more than 8 CPUs they are hashed to the 8 available vectors. The limited global vector space forces us to this right now. In future when interrupts are split into per CPU domains this could be fixed, at the cost of needing more IPIs in flat mode. Also some minor cleanup in the smp flush code and remove some outdated debug code. Requires patch to move cpu_possible_map setup earlier. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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