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2007-05-09rename thread_info to stackRoman Zippel
This finally renames the thread_info field in task structure to stack, so that the assumptions about this field are gone and archs have more freedom about placing the thread_info structure. Nonbroken archs which have a proper thread pointer can do the access to both current thread and task structure via a single pointer. It'll allow for a few more cleanups of the fork code, from which e.g. ia64 could benefit. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> [akpm@linux-foundation.org: build fix] Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ian Molton <spyro@f2s.com> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Mikael Starvik <starvik@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Cc: Richard Curnow <rc@rc0.org.uk> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp> Cc: Andi Kleen <ak@muc.de> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-09wrap access to thread_infoRoman Zippel
Recently a few direct accesses to the thread_info in the task structure snuck back, so this wraps them with the appropriate wrapper. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-09microcode: use suspend-related CPU hotplug notificationsRafael J. Wysocki
Make the microcode driver use the suspend-related CPU hotplug notifications to handle the CPU hotplug events occuring during system-wide suspend and resume transitions. Remove the global variable suspend_cpu_hotplug previously used for this purpose. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: Gautham R Shenoy <ego@in.ibm.com> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-09Add suspend-related notifications for CPU hotplugRafael J. Wysocki
Since nonboot CPUs are now disabled after tasks and devices have been frozen and the CPU hotplug infrastructure is used for this purpose, we need special CPU hotplug notifications that will help the CPU-hotplug-aware subsystems distinguish normal CPU hotplug events from CPU hotplug events related to a system-wide suspend or resume operation in progress. This patch introduces such notifications and causes them to be used during suspend and resume transitions. It also changes all of the CPU-hotplug-aware subsystems to take these notifications into consideration (for now they are handled in the same way as the corresponding "normal" ones). [oleg@tv-sign.ru: cleanups] Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: Gautham R Shenoy <ego@in.ibm.com> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-09Use the APIC to determine the hardware processor id - i386Fernando Luis Vazquez Cao
hard_smp_processor_id used to be just a macro that hard-coded hard_smp_processor_id to 0 in the non SMP case. When booting non SMP kernels on hardware where the boot ioapic id is not 0 this turns out to be a problem. This is happens frequently in the case of kdump and once in a great while in the case of real hardware. Use the APIC to determine the hardware processor id in both UP and SMP kernels to fix this issue. Notice that hard_smp_processor_id is only used by SMP code or by code that works with apics so we do not need to handle the case when apics are not present and hard_smp_processor_id should never be called there. Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp> Cc: "Luck, Tony" <tony.luck@intel.com> Acked-by: Andi Kleen <ak@suse.de> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-09Remove hardcoding of hard_smp_processor_id on UP systemsFernando Luis Vazquez Cao
With the advent of kdump, the assumption that the boot CPU when booting an UP kernel is always the CPU with a particular hardware ID (often 0) (usually referred to as BSP on some architectures) is not valid anymore. The reason being that the dump capture kernel boots on the crashed CPU (the CPU that invoked crash_kexec), which may be or may not be that particular CPU. Move definition of hard_smp_processor_id for the UP case to architecture-specific code ("asm/smp.h") where it belongs, so that each architecture can provide its own implementation. Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp> Cc: "Luck, Tony" <tony.luck@intel.com> Acked-by: Andi Kleen <ak@suse.de> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-09uml: turn build warnings into commentsMiklos Szeredi
These haven't been fixed for ages. Just make comments out of them. arch/um/kernel/skas/process.c:181:2: warning: #warning Need to look up +userspace_pid by cpu arch/um/kernel/skas/process.c:187:2: warning: #warning Need to look up +userspace_pid by cpu arch/um/kernel/skas/process.c:194:2: warning: #warning need to loop over +userspace_pids in kill_off_processes_skas Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-09uml: mark a tt-only functionJeff Dike
Mark another function as tt-mode only. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-09uml: turn on SCSI supportPeter Zijlstra
Enable (i)SCSI on UML, dunno why SCSI was deemed broken, it works like a charm. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-09FRV: Replace pgd management via slabs through quicklistsChristoph Lameter
This is done in order to be able to run SLUB which expects no modifications to its page structs. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08FRV: Miscellaneous fixesDavid Howells
Miscellaneous fixes to bring FRV up to date: (1) Copy the new syscall numbers from i386 to asm-frv/unistd.h and fill out the syscall table in entry.S too. (2) Mark __frv_uart0 and __frv_uart1 __pminitdata rather than __initdata so that determine_clocks() can access them when CONFIG_PM=y. (3) Make arch/frv/mm/elf-fdpic.c include asm/mman.h so that MAP_FIXED is available (fixes commit 2fd3bebaad9da3b3b99c46a3389099424bf7ee35). Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC64]: Optimize fault kprobe handling just like powerpc. [SPARC]: Wire up utimensat syscall. [SPARC64]: Fix request_irq() ignored result warnings in PCI controller code. [SPARC64]: Kill asm-sparc64/pbm.h [ATYFB]: Fix sparc includes. [QLA2XXX]: Fix build on sparc. [SPARC64]: Removal of trivial pci_controller_info uses. [SPARC64]: Move index info pci_pbm_info. [SPARC64]: Move {setup,teardown}_msi_irq into pci_pbm_info. [SPARC64]: Move pci_ops into pci_pbm_info. [SPARC64] SBUS: Error interrupt registry cleanups. [SPARC64] PCI: Use root list of pbm's instead of pci_controller_info's [SPARC64] PCI: Kill PROM_PCIRNG_MAX and PROM_PCIIMAP_MAX. [SPARC64] PCI: Use common routine to fetch PBM properties.
2007-05-08Revert "fbdev: ignore VESA modes if framebuffer is disabled"Linus Torvalds
This reverts commit 464bdd33e9baad9806c7adbd8dfc37081a55f27e. Peter Anvin correctly points out that VESA modes have nothing to do with frame buffers per se - they are often just regular extended text modes. Disabling them just because we don't have frame buffer support is very wrong. Cc: H. Peter Anvin <hpa@zytor.com> Cc: Antonino A. Daplas <adaplas@gmail.com>, Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08[SPARC64]: Optimize fault kprobe handling just like powerpc.David S. Miller
And eliminate DIE_GPF while we're at it. Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08[SPARC]: Wire up utimensat syscall.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08[SPARC64]: Fix request_irq() ignored result warnings in PCI controller code.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08[SPARC64]: Kill asm-sparc64/pbm.hDavid S. Miller
Everything it contains can be hidden in pci_impl.h Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08[SPARC64]: Removal of trivial pci_controller_info uses.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08[SPARC64]: Move index info pci_pbm_info.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08[SPARC64]: Move {setup,teardown}_msi_irq into pci_pbm_info.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08[SPARC64]: Move pci_ops into pci_pbm_info.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08[SPARC64] SBUS: Error interrupt registry cleanups.David S. Miller
Do not use IRQF_SHARED, these interrupt numbers should all be unique. Also use name strings without spaces in them just like PCI controller drivers do, for consistency. Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08[SPARC64] PCI: Use root list of pbm's instead of pci_controller_info'sDavid S. Miller
The idea is to move more and more things into the pbm, with the eventual goal of eliminating the pci_controller_info entirely as there really isn't any need for it. This stage of the transformations requires some reworking of the PCI error interrupt handling. It might be tricky to get rid of the pci_controller_info parenting for a few reasons: 1) When we get an uncorrectable or correctable error we want to interrogate the IOMMU and streaming cache of both PBMs for error status. These errors come from the UPA front-end which is shared between the two PBM PCI bus segments. Historically speaking this is why I choose the datastructure hierarchy of pci_controller_info-->pci_pbm_info 2) The probing does a portid/devhandle match to look for the 'other' pbm, but this is entirely an artifact and can be eliminated trivially. What we could do to solve #1 is to have a "buddy" pointer from one pbm to another. Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08[SPARC64] PCI: Use common routine to fetch PBM properties.David S. Miller
Namely bus-range and ino-bitmap. This allows us also to eliminate pci_controller_info's pci_{first,last}_busno fields as only the pbm ones are used now. Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08Merge branch 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds
* 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: (32 commits) Use menuconfig objects - hwmon hwmon/smsc47b397: Use dynamic sysfs callbacks hwmon/smsc47b397: Convert to a platform driver hwmon/w83781d: Deprecate W83627HF support hwmon/w83781d: Use dynamic sysfs callbacks hwmon/w83781d: Be less i2c_client-centric hwmon/w83781d: Clean up conversion macros hwmon/w83781d: No longer use i2c-isa hwmon/ams: Do not print error on systems without apple motion sensor hwmon/ams: Fix I2C read retry logic hwmon: New AD7416, AD7417 and AD7418 driver hwmon/coretemp: Add documentation hwmon: New coretemp driver i386: Use functions from library in msr driver i386: Add safe variants of rdmsr_on_cpu and wrmsr_on_cpu hwmon/lm75: Use dynamic sysfs callbacks hwmon/lm78: Use dynamic sysfs callbacks hwmon/lm78: Be less i2c_client-centric hwmon/lm78: No longer use i2c-isa hwmon: New max6650 driver ...
2007-05-08Merge branch 'upstream-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: (40 commits) [netdrvr] atl1: fix build pasemi_mac: Use local-mac-address instead of mac-address if available pasemi_mac: PHY support pasemi_mac: Add msglevel support and "debug" module param pasemi_mac: Logic cleanup / rx performance improvements pasemi_mac: Minor cleanup / define fixes pasemi_mac: Add SKB reuse / copy-break pasemi_mac: Timer and interrupt fixes pasemi_mac: Abstract and fix up interrupt restart routines pasemi_mac: Move the IRQ mapping from the PCI layer to the driver tc35815: Remove unnecessary skb->dev assignment drivers/net/dm9000: Convert to generic boolean AT91RM9200 Ethernet: Fix multicast addressing AT91RM9200 Ethernet: Support additional PHYs PCMCIA-NETDEV : xirc2ps_cs: bugfix of multicast code sky2: re-enable 88E8056 for most motherboards MIPS: Drop unnecessary CONFIG_ISA from RBTX49XX ne: MIPS: Use platform_driver for ne on RBTX49XX ne: Add NEEDS_PORTLIST to control ISA auto-probe ne: Misc fixes for platform driver. ... Fix conflict in drivers/net/pasemi_mac.c (get_property() got renamed to of_get_property()) manually. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08Merge branch 'master' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (77 commits) [POWERPC] Abolish powerpc_flash_init() [POWERPC] Early serial debug support for PPC44x [POWERPC] Support for the Ebony 440GP reference board in arch/powerpc [POWERPC] Add device tree for Ebony [POWERPC] Add powerpc/platforms/44x, disable platforms/4xx for now [POWERPC] MPIC U3/U4 MSI backend [POWERPC] MPIC MSI allocator [POWERPC] Enable MSI mappings for MPIC [POWERPC] Tell Phyp we support MSI [POWERPC] RTAS MSI implementation [POWERPC] PowerPC MSI infrastructure [POWERPC] Rip out the existing powerpc msi stubs [POWERPC] Remove use of 4level-fixup.h for ppc32 [POWERPC] Add powerpc PCI-E reset API implementation [POWERPC] Holly bootwrapper [POWERPC] Holly DTS [POWERPC] Holly defconfig [POWERPC] Add support for 750CL Holly board [POWERPC] Generalize tsi108 PCI setup [POWERPC] Generalize tsi108 PHY types ... Fixed conflict in include/asm-powerpc/kdebug.h manually Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08xilinxfb: xilinx framebuffer device driverAndrei Konovalov
Add support for the video controller IP block included into Xilinx ML300 and ML403 reference designs. Signed-off-by: Andrei Konovalov <akonovalov@ru.mvista.com> Signed-off-by: Antonino Daplas <adaplas@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08fbdev: ignore VESA modes if framebuffer is disabledAntonino A. Daplas
If the option vga=<VESA graphics mode> is added to the boot parameter, it will activate graphics mode, but without any framebuffer support, the user is left with an unusable display. Change the behavior such that the user is instead prompted for another mode (ala vga=ask). NOTE: People can always use vbetool to set a graphics mode if this is really desired, but the number of people doing this approaches zero. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08x86, serial: convert legacy COM ports to platform devicesBjorn Helgaas
Make x86 COM ports into platform devices and don't probe for them if we have PNP. This prevents double discovery, where a device was found both by the legacy probe and by 8250_pnp, e.g., serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A 00:02: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A This also means IRDA devices without a UART PNP ID will no longer be claimed by the serial driver, which might require changes in IRDA drivers and administration. In addition to this patch, you may need to configure a setserial init script, e.g., /etc/init.d/setserial, so it doesn't poke legacy UART stuff back in. On Debian, "dpkg-reconfigure setserial" with the "kernel" option does this. To force the old legacy probe behavior even when we have PNPBIOS or ACPI, load the new legacy_serial module (or build 8250 static) with the "legacy_serial.force" option. [akpm@linux-foundation.org: fix makefiles] Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Keith Owens <kaos@ocs.com.au> Cc: Len Brown <lenb@kernel.org> Cc: Adam Belay <ambx1@neo.rr.com> Cc: Matthieu CASTET <castet.matthieu@free.fr> Cc: Jean Tourrilhes <jt@hpl.hp.com> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Cc: Ville Syrjala <syrjala@sci.fi> Cc: Russell King <rmk+serial@arm.linux.org.uk> Cc: Samuel Ortiz <samuel@sortiz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08Add IRQF_IRQPOLL flag on armBernhard Walle
Add IRQF_IRQPOLL for each timer interrupt. Signed-off-by: Bernhard Walle <bwalle@suse.de> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08Add IRQF_IRQPOLL flag on pariscBernhard Walle
Add IRQF_IRQPOLL to the timer interrupt on parisc. Signed-off-by: Bernhard Walle <bwalle@suse.de> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Matthew Wilcox <willy@debian.org> Cc: Grant Grundler <grundler@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08Add IRQF_IRQPOLL flag on shBernhard Walle
Add IRQF_IRQPOLL on each timer interrupt on SH2. Signed-off-by: Bernhard Walle <bwalle@suse.de> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08Add IRQF_IRQPOLL flag on IA64Bernhard Walle
Add IRQF_IRQPOLL for the timer interrupt on IA64. Signed-off-by: Bernhard Walle <bwalle@suse.de> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08Add IRQF_IRQPOLL flag on i386Bernhard Walle
Add IRQF_IRQPOLL to timer interrupts on i386. Signed-off-by: Bernhard Walle <bwalle@suse.de> Cc: Andi Kleen <ak@suse.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: James Bottomley <James.Bottomley@steeleye.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08Add IRQF_IRQPOLL flag on x86_64Bernhard Walle
Add IRQF_IRQPOLL for the timer interrupt on x86_64. Signed-off-by: Bernhard Walle <bwalle@suse.de> Cc: Andi Kleen <ak@suse.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08no longer #include <asm/kdebug.h>Adrian Bunk
Include the new linux/kdebug.h instead of asm/kdebug.h. Simply remove the asm/kdebug.h include if both had been included. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08uml: pcap devices should get MACs from command lineJeff Dike
Allow a pcap device to be assigned a MAC on the command line. They don't really need one, but it is handy to be able to do when your distro assigns a new ethernet device whenever it sees a new MAC. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08uml: network and pcap cleanupJeff Dike
Some network device cleanup. When setup_etheraddr found a globally valid MAC being assigned to an interface, it went ahead and used it rather than assigning a random MAC like the other cases do. This isn't really an error like the others, but it seems consistent to make it behave the same. We were getting some duplicate kfree() in the error case in eth_configure because platform_device_unregister frees buffers that the error cases following tried to free again. The pcap initialization routine wasn't doing the proper printk of its information, causing a printk of the first part of that line to be unterminated by a newline. The pcap code had a bunch of style violations, which are now fixed. pcap_setup wasn't returning false when it detected an unrecognized option. The printks in pcap_user all got UM_KERN_BLAH prepended to their format strings. pcap_remove now checks for a non-NULL pcap structure before it calls pcap_close. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Acked-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08Kprobes: The ON/OFF knob thru debugfsAnanth N Mavinakayanahalli
This patch provides a debugfs knob to turn kprobes on/off o A new file /debug/kprobes/enabled indicates if kprobes is enabled or not (default enabled) o Echoing 0 to this file will disarm all installed probes o Any new probe registration when disabled will register the probe but not arm it. A message will be printed out in such a case. o When a value 1 is echoed to the file, all probes (including ones registered in the intervening period) will be enabled o Unregistration will happen irrespective of whether probes are globally enabled or not. o Update Documentation/kprobes.txt to reflect these changes. While there also update the doc to make it current. We are also looking at providing sysrq key support to tie to the disabling feature provided by this patch. [akpm@linux-foundation.org: Use bool like a bool!] [akpm@linux-foundation.org: add printk facility levels] [cornelia.huck@de.ibm.com: Add the missing arch_trampoline_kprobe() for s390] Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Srinivasa DS <srinivasa@in.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08kprobes: kretprobes simplificationsChristoph Hellwig
- consolidate duplicate code in all arch_prepare_kretprobe instances into common code - replace various odd helpers that use hlist_for_each_entry to get the first elemenet of a list with either a hlist_for_each_entry_save or an opencoded access to the first element in the caller - inline add_rp_inst into it's only remaining caller - use kretprobe_inst_table_head instead of opencoding it Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08utimensat implementationUlrich Drepper
Implement utimensat(2) which is an extension to futimesat(2) in that it a) supports nano-second resolution for the timestamps b) allows to selectively ignore the atime/mtime value c) allows to selectively use the current time for either atime or mtime d) supports changing the atime/mtime of a symlink itself along the lines of the BSD lutimes(3) functions For this change the internally used do_utimes() functions was changed to accept a timespec time value and an additional flags parameter. Additionally the sys_utime function was changed to match compat_sys_utime which already use do_utimes instead of duplicating the work. Also, the completely missing futimensat() functionality is added. We have such a function in glibc but we have to resort to using /proc/self/fd/* which not everybody likes (chroot etc). Test application (the syscall number will need per-arch editing): #include <errno.h> #include <fcntl.h> #include <time.h> #include <sys/time.h> #include <stddef.h> #include <syscall.h> #define __NR_utimensat 280 #define UTIME_NOW ((1l << 30) - 1l) #define UTIME_OMIT ((1l << 30) - 2l) int main(void) { int status = 0; int fd = open("ttt", O_RDWR|O_CREAT|O_EXCL, 0666); if (fd == -1) error (1, errno, "failed to create test file \"ttt\""); struct stat64 st1; if (fstat64 (fd, &st1) != 0) error (1, errno, "fstat failed"); struct timespec t[2]; t[0].tv_sec = 0; t[0].tv_nsec = 0; t[1].tv_sec = 0; t[1].tv_nsec = 0; if (syscall(__NR_utimensat, AT_FDCWD, "ttt", t, 0) != 0) error (1, errno, "utimensat failed"); struct stat64 st2; if (fstat64 (fd, &st2) != 0) error (1, errno, "fstat failed"); if (st2.st_atim.tv_sec != 0 || st2.st_atim.tv_nsec != 0) { puts ("atim not reset to zero"); status = 1; } if (st2.st_mtim.tv_sec != 0 || st2.st_mtim.tv_nsec != 0) { puts ("mtim not reset to zero"); status = 1; } if (status != 0) goto out; t[0] = st1.st_atim; t[1].tv_sec = 0; t[1].tv_nsec = UTIME_OMIT; if (syscall(__NR_utimensat, AT_FDCWD, "ttt", t, 0) != 0) error (1, errno, "utimensat failed"); if (fstat64 (fd, &st2) != 0) error (1, errno, "fstat failed"); if (st2.st_atim.tv_sec != st1.st_atim.tv_sec || st2.st_atim.tv_nsec != st1.st_atim.tv_nsec) { puts ("atim not set"); status = 1; } if (st2.st_mtim.tv_sec != 0 || st2.st_mtim.tv_nsec != 0) { puts ("mtim changed from zero"); status = 1; } if (status != 0) goto out; t[0].tv_sec = 0; t[0].tv_nsec = UTIME_OMIT; t[1] = st1.st_mtim; if (syscall(__NR_utimensat, AT_FDCWD, "ttt", t, 0) != 0) error (1, errno, "utimensat failed"); if (fstat64 (fd, &st2) != 0) error (1, errno, "fstat failed"); if (st2.st_atim.tv_sec != st1.st_atim.tv_sec || st2.st_atim.tv_nsec != st1.st_atim.tv_nsec) { puts ("mtim changed from original time"); status = 1; } if (st2.st_mtim.tv_sec != st1.st_mtim.tv_sec || st2.st_mtim.tv_nsec != st1.st_mtim.tv_nsec) { puts ("mtim not set"); status = 1; } if (status != 0) goto out; sleep (2); t[0].tv_sec = 0; t[0].tv_nsec = UTIME_NOW; t[1].tv_sec = 0; t[1].tv_nsec = UTIME_NOW; if (syscall(__NR_utimensat, AT_FDCWD, "ttt", t, 0) != 0) error (1, errno, "utimensat failed"); if (fstat64 (fd, &st2) != 0) error (1, errno, "fstat failed"); struct timeval tv; gettimeofday(&tv,NULL); if (st2.st_atim.tv_sec <= st1.st_atim.tv_sec || st2.st_atim.tv_sec > tv.tv_sec) { puts ("atim not set to NOW"); status = 1; } if (st2.st_mtim.tv_sec <= st1.st_mtim.tv_sec || st2.st_mtim.tv_sec > tv.tv_sec) { puts ("mtim not set to NOW"); status = 1; } if (symlink ("ttt", "tttsym") != 0) error (1, errno, "cannot create symlink"); t[0].tv_sec = 0; t[0].tv_nsec = 0; t[1].tv_sec = 0; t[1].tv_nsec = 0; if (syscall(__NR_utimensat, AT_FDCWD, "tttsym", t, AT_SYMLINK_NOFOLLOW) != 0) error (1, errno, "utimensat failed"); if (lstat64 ("tttsym", &st2) != 0) error (1, errno, "lstat failed"); if (st2.st_atim.tv_sec != 0 || st2.st_atim.tv_nsec != 0) { puts ("symlink atim not reset to zero"); status = 1; } if (st2.st_mtim.tv_sec != 0 || st2.st_mtim.tv_nsec != 0) { puts ("symlink mtim not reset to zero"); status = 1; } if (status != 0) goto out; t[0].tv_sec = 1; t[0].tv_nsec = 0; t[1].tv_sec = 1; t[1].tv_nsec = 0; if (syscall(__NR_utimensat, fd, NULL, t, 0) != 0) error (1, errno, "utimensat failed"); if (fstat64 (fd, &st2) != 0) error (1, errno, "fstat failed"); if (st2.st_atim.tv_sec != 1 || st2.st_atim.tv_nsec != 0) { puts ("atim not reset to one"); status = 1; } if (st2.st_mtim.tv_sec != 1 || st2.st_mtim.tv_nsec != 0) { puts ("mtim not reset to one"); status = 1; } if (status == 0) puts ("all OK"); out: close (fd); unlink ("ttt"); unlink ("tttsym"); return status; } [akpm@linux-foundation.org: add missing i386 syscall table entry] Signed-off-by: Ulrich Drepper <drepper@redhat.com> Cc: Alexey Dobriyan <adobriyan@openvz.org> Cc: Michael Kerrisk <mtk-manpages@gmx.net> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08dma_declare_coherent_memory wrong allocationGuennadi Liakhovetski
dma_declare_coherent_memory() allocates a bitmap 1 bit per page, it calculates the bitmap size based on size of long, but allocates bytes... Thanks to James Bottomley for clarifications and corrections. Signed-off-by: G. Liakhovetski <g.liakhovetski@gmx.de> Acked-by: James Bottomley <James.Bottomley@SteelEye.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08apm: fix incorrect commentAlan Cox
HZ has not always been 100Hz for some time. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08EFI: warn only for pre-1.00 system tablesBjorn Helgaas
We used to warn unless the EFI system table major revision was exactly 1. But EFI 2.00 firmware is starting to appear, and the 2.00 changes don't affect anything in Linux. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Andi Kleen <ak@suse.de> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08Replace deprecated SA_xxx interrupt flagsThomas Gleixner
Fix the last users of the deprecated SA_xxx interrupt flags. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08Simplify kallsyms_lookup()Alexey Dobriyan
Several kallsyms_lookup() pass dummy arguments but only need, say, module's name. Make kallsyms_lookup() accept NULLs where possible. Also, makes picture clearer about what interfaces are needed for all symbol resolving business. Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Cc: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08Kprobes: print details of kretprobe on assertion failureAnanth N Mavinakayanahalli
In certain cases like when the real return address can't be found or when the number of tracked calls to a kretprobed function is less than the number of returns, we may not be able to find the correct return address after processing a kretprobe. Currently we just do a BUG_ON, but no information is provided about the actual failing kretprobe. Print out details of the kretprobe before calling BUG(). Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: Maneesh Soni <maneesh@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08kdump/kexec: calculate note size at compile timeSimon Horman
Currently the size of the per-cpu region reserved to save crash notes is set by the per-architecture value MAX_NOTE_BYTES. Which in turn is currently set to 1024 on all supported architectures. While testing ia64 I recently discovered that this value is in fact too small. The particular setup I was using actually needs 1172 bytes. This lead to very tedious failure mode where the tail of one elf note would overwrite the head of another if they ended up being alocated sequentially by kmalloc, which was often the case. It seems to me that a far better approach is to caclculate the size that the area needs to be. This patch does just that. If a simpler stop-gap patch for ia64 to be squeezed into 2.6.21(.X) is needed then this should be as easy as making MAX_NOTE_BYTES larger in arch/asm-ia64/kexec.h. Perhaps 2048 would be a good choice. However, I think that the approach in this patch is a much more robust idea. Acked-by: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08header cleaning: don't include smp_lock.h when not usedRandy Dunlap
Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). 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>