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2008-08-21x86, pageattr: introduce APIs to change pageattr of a page arrayShaohua Li
Add array interface APIs of pageattr. page based cache flush is quite slow for a lot of pages. If pages are more than 1024 (4M), the patch will use a wbinvd(). We have a simple test here (run a 3d game - open arena), nearly all agp memory allocation are small (< 1M), so suppose this will not impact runtime performance. Signed-off-by: Dave Airlie <airlied@gmail.com> Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-21Revert "introduce two APIs for page attribute"Ingo Molnar
This reverts commit 1ac2f7d55b7ee1613c90631e87fea22ec06781e5.
2008-08-15x86, pat: avoid highmem cache attribute aliasingNick Piggin
Highmem code can leave ptes and tlb entries around for a given page even after kunmap, and after it has been freed. >From what I can gather, the PAT code may change the cache attributes of arbitrary physical addresses (ie. including highmem pages), which would result in aliases in the case that it operates on one of these lazy tlb highmem pages. Flushing kmaps should solve the problem. I've also just added code for conditional flushing if we haven't got any dangling highmem aliases -- this should help performance if we change page attributes frequently or systems that aren't using much highmem pages (eg. if < 4G RAM). Should be turned into 2 patches, but just for RFC... Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-15introduce two APIs for page attributeShaohua Li
Introduce two APIs for page attribute. flushing tlb/cache in every page attribute is expensive. AGP gart usually will do a lot of operations to change a page to uc, new APIs can reduce flush. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Cc: airlied@linux.ie Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-11x86: compile pat debugfs interface only if CONFIG_X86_PAT is setAndreas Herrmann
Recently I've run a kernel w/o PAT support and wondered why there was a file "x86/pat_memtype_list" in debugfs. Of course it's empty if PAT is disabled ... so just get rid of this interface if PAT is disabled. Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-11Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: powerpc: Remove include/linux/harrier_defs.h powerpc: Do not ignore arch/powerpc/include powerpc: Delete completed "ppc removal" task from feature removal file powerpc/mm: Fix attribute confusion with htab_bolt_mapping() powerpc/pci: Don't keep ISA memory hole resources in the tree powerpc: Zero fill the return values of rtas argument buffer powerpc/4xx: Update defconfig files for 2.6.27-rc1 powerpc/44x: Incorrect NOR offset in Warp DTS powerpc/44x: Warp DTS changes for board updates powerpc/4xx: Cleanup Warp for i2c driver changes. powerpc/44x: Adjust warp-nand resource end address
2008-08-11m68k{,nommu}: Wire up new system callsGeert Uytterhoeven
Wire up for m68k{,nommu} the system calls that were added in the last merge window: - 4006553b06306b34054529477b06b68a1c66249b ("flag parameters: inotify_init") - ed8cae8ba01348bfd83333f4648dd807b04d7f08 ("flag parameters: pipe") - 336dd1f70ff62d7dd8655228caed4c5bfc818c56 ("flag parameters: dup2") - a0998b50c3f0b8fdd265c63e0032f86ebe377dbf ("flag parameters: epoll_create") - 9fe5ad9c8cef9ad5873d8ee55d1cf00d9b607df0 ("flag parameters add-on: remove epoll_create size param") - b087498eb5605673b0f260a7620d91818cd72304 ("flag parameters: eventfd") - 9deb27baedb79759c3ab9435a7d8b841842d56e9 ("flag parameters: signalfd") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-11powerpc: Do not ignore arch/powerpc/includeJunio C Hamano
Back when .gitignore file was added to arch/powerpc/ in 06f2138 ([POWERPC] Add files build to .gitignore, 2006-11-26), there indeed was nothing tracked in the ignored hierarchy and ignoring everything made sense. But we have very many tracked files there these days, and having a higher level .gitignore that ignores everything is asking for future troubles.. This should have been part of b8b572e (powerpc: Move include files to arch/powerpc/include/asm, 2008-08-01). Signed-off-by: Junio C Hamano <gitster@pobox.com> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-08-11powerpc/mm: Fix attribute confusion with htab_bolt_mapping()Benjamin Herrenschmidt
The function htab_bolt_mapping() is used to create permanent mappings in the MMU hash table, for example, in order to create the linear mapping of vmemmap. It's also used by early boot ioremap (before mem_init_done). However, the way ioremap uses it is incorrect as it passes it the protection flags in the "linux PTE" form while htab_bolt_mapping() expects them in the hash table format. This is made more confusing by the fact that some of those flags are actually in the same position in both cases. This fixes it all by making htab_bolt_mapping() take normal linux protection flags instead, and use a little helper to convert them to htab flags. Callers can now use the usual PAGE_* definitions safely. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> arch/powerpc/include/asm/mmu-hash64.h | 2 - arch/powerpc/mm/hash_utils_64.c | 65 ++++++++++++++++++++-------------- arch/powerpc/mm/init_64.c | 9 +--- 3 files changed, 44 insertions(+), 32 deletions(-) Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-08-11powerpc/pci: Don't keep ISA memory hole resources in the treeBenjamin Herrenschmidt
When we have an ISA memory hole (ie, a PCI window that allows us to generate PCI memory cycles at low PCI address) mixed with other resources using a different CPU <=> PCI mapping, we must not keep the ISA hole in the bridge resource list. If we do, things might start trying to allocate device resources in there and will get the PCI addresses wrong. This fixes it by arranging to remove the ISA memory hole resource in this case. This fixes various cases of PCMCIA breakage on PowerBooks using the MPC106 "grackle" bridge. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-08-11powerpc: Zero fill the return values of rtas argument bufferNathan Fontenot
The kernel copy of the rtas args struct contains the return value(s) for the specified rtas call. These are copied back to user space with the assumption that every value has been set by the rtas call, which turns out to be not always true. Thus userspace can see random values and think the call failed when in fact it succeeded, but for some reason didn't set one of the return values. This fixes the problem by zeroing out the return value fields of the rtas args struct before processing the rtas call. Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-08-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6: avr32: Make atstk1006_nand_data definition static avr32: Reduce DataFlash bus speed to 8 MHz on ATNGW100 avr32: Update defconfigs avr32: Clean up HMATRIX code avr32: Add MMIO address definitions for certain controllers avr32: Introduce <mach/chip.h> avr32: Remove include/asm-avr32/arch-at32ap
2008-08-08Merge branch 'fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq: [CPUFREQ][2/2] preregister support for powernow-k8 [CPUFREQ][1/2] whitespace fix for powernow-k8 [CPUFREQ] Update MAINTAINERS to reflect new mailing list. [CPUFREQ] Fix warning in elanfreq [CPUFREQ] Fix -Wshadow warning in conservative governor. [CPUFREQ] Remove EXPERIMENTAL annotation from VIA C7 powersaver kconfig.
2008-08-08[CPUFREQ][2/2] preregister support for powernow-k8Mark Langsdorf
This patch provides support for the _PSD ACPI object in the Powernow-k8 driver. Although it looks like an invasive patch, most of it is simply the consequence of turning the static acpi_performance_data structure into a pointer. AMD has tested it on several machines over the past few days without issue. [trivial checkpatch warnings fixed up by davej] [X86_POWERNOW_K8_ACPI=n buildfix from Randy Dunlap] Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com> Tested-by: Frank Arnold <frank.arnold@amd.com> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Dave Jones <davej@redhat.com>
2008-08-08[CPUFREQ][1/2] whitespace fix for powernow-k8Mark Langsdorf
Trivial whitespace fix for powernow-k8. Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com> Signed-off-by: Dave Jones <davej@redhat.com>
2008-08-08[CPUFREQ] Fix warning in elanfreqDave Jones
arch/x86/kernel/cpu/cpufreq/elanfreq.c:47:26: warning: symbol 'elan_multiplier' was not declared. Should it be static? Yes, yes it should. Signed-off-by: Dave Jones <davej@redhat.com>
2008-08-08[CPUFREQ] Remove EXPERIMENTAL annotation from VIA C7 powersaver kconfig.Dave Jones
This has been pretty solid, and doesn't see much change at all. Noticed by Harald Welte. Signed-off-by: Dave Jones <davej@redhat.com>
2008-08-08Merge branch 'for-linus-merged' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* 'for-linus-merged' of master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 5177/1: arm/mach-sa1100/Makefile: remove CONFIG_SA1100_USB [ARM] 5166/1: magician: add MAINTAINERS entry [ARM] fix pnx4008 build errors [ARM] Fix SMP booting with non-zero PHYS_OFFSET [ARM] 5185/1: Fix spi num_chipselect for lubbock [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach [ARM] Add support for arch/arm/mach-*/include and arch/arm/plat-*/include [ARM] Remove asm/hardware.h, use asm/arch/hardware.h instead [ARM] Eliminate useless includes of asm/mach-types.h [ARM] Fix circular include dependency with IRQ headers avr32: Use <mach/foo.h> instead of <asm/arch/foo.h> avr32: Introduce arch/avr32/mach-*/include/mach avr32: Move include/asm-avr32 to arch/avr32/include/asm [ARM] sa1100_wdt: use reset_status to remember watchdog reset status [ARM] pxa: introduce reset_status and clear_reset_status for driver's usage [ARM] pxa: introduce reset.h for reset specific header information
2008-08-08Merge Linus' latest into masterRussell King
Conflicts: drivers/watchdog/at91rm9200_wdt.c drivers/watchdog/davinci_wdt.c drivers/watchdog/ep93xx_wdt.c drivers/watchdog/ixp2000_wdt.c drivers/watchdog/ixp4xx_wdt.c drivers/watchdog/ks8695_wdt.c drivers/watchdog/omap_wdt.c drivers/watchdog/pnx4008_wdt.c drivers/watchdog/sa1100_wdt.c drivers/watchdog/wdt285.c
2008-08-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (99 commits) pkt_sched: Fix actions referencing bnx2x: fix logical op tcp: (whitespace only) fix confusing indentation pkt_sched: Fix qdisc config when link is down. [Bluetooth] Add full quirk implementation for btusb driver [Bluetooth] Removal of unnecessary ignore module parameter [Bluetooth] Add parameters to control BNEP header compression ath9k: Revamp wireless mode usage ath9k: More unused macros ath9k: Remove a few unused macros and fix indentation ath9k: Use mac80211's band macros and remove enum hal_freq_band ath9k: Remove redundant data structure ath9k_txq_info ath9k: Cleanup data structures related to HW capabilities ath9k: work around gcc ICEs ath9k: Add new Atheros IEEE 802.11n driver ath5k: remove Atheros 11n devices from supported list list.h: add list_cut_position() list.h: Add list_splice_tail() and list_splice_tail_init() p54: swap short slot time dcf values rt2x00: Block all unsupported modes ...
2008-08-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc64: Fix end-of-stack checking in save_stack_trace(). sparc: don't use asm/of_device.h sparc64: Use kernel/uid16.c helpers instead of own copy. of/sparc: remove include of linux/of_platform.h from asm/of_platform.h sparc: i8042-sparcio.h: fix warning
2008-08-08powerpc: Do not ignore arch/powerpc/includeJunio C Hamano
Back when .gitignore file was added to arch/powerpc/ in 06f2138 ([POWERPC] Add files build to .gitignore, 2006-11-26), there indeed was nothing tracked in the ignored hierarchy and ignoring everything made sense. But we have very many tracked files there these days, and having a higher level .gitignore that ignores everything is asking for future troubles.. This should have been part of b8b572e (powerpc: Move include files to arch/powerpc/include/asm, 2008-08-01). Signed-off-by: Junio C Hamano <gitster@pobox.com> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-08[ARM] 5177/1: arm/mach-sa1100/Makefile: remove CONFIG_SA1100_USBAdrian Bunk
This patch removes the commented out line for the not available CONFIG_SA1100_USB option. Reported-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-08[ARM] fix pnx4008 build errorsRussell King
include/linux/i2c-pnx.h was missed when moving the include files. Fix it now; it doesn't really need to include mach/i2c.h at all. Successfully build tested with pnx4008_defconfig, which had failed in linux-next. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-08avr32: Make atstk1006_nand_data definition staticHaavard Skinnemoen
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-08-08avr32: Reduce DataFlash bus speed to 8 MHz on ATNGW100Haavard Skinnemoen
Doing this in combination with "atmel_spi: fix hang due to missed interrupt" appears to eliminate the overruns I'm seeing when using JFFS2-on-DataFlash as /usr filesystem on the ATNGW100. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-08-08avr32: Update defconfigsHaavard Skinnemoen
Enable power management, DMA and MMC on all boards except ATSTK1004, and add defconfig for the new ATSTK1006 board with NAND flash, UBI and UBIFS enabled as well. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-08-08avr32: Clean up HMATRIX codeHaavard Skinnemoen
Introduce a few helper functions for HMATRIX configuration and clean up the register definitions. Also add definitions for the HMATRIX master and slave IDs on the AT32AP700x chips. Also make the definitions in hmatrix.h available to board code by moving it to <mach/hmatrix.h> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-08-08avr32: Add MMIO address definitions for certain controllersHaavard Skinnemoen
Hardcoded MMIO base addresses are used a few places throughout the platform code. Move these into the chip-specific header file so that adding support for new chips becomes a bit easier. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-08-08avr32: Introduce <mach/chip.h>Haavard Skinnemoen
This file includes the appropriate chip-specific header with MMIO, IRQ and GPIO definitions used by the platform code. It may also be used to provide inline GPIO accessors for drivers that are willing to sacrifice portability for faster bitbanging. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-08-08avr32: Remove include/asm-avr32/arch-at32apHaavard Skinnemoen
Since all users have been converted over to use <mach/foo.h>, there's no need for the arch-at32ap directory and associated symlink anymore. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-08-07sparc64: Fix end-of-stack checking in save_stack_trace().David S. Miller
Bug reported by Alexander Beregalov. Before we dereference the stack frame or try to peek at the pt_regs magic value, make sure the entire object is within the kernel stack bounds. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-07Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: Move all of include/asm-m68knommu to arch/m68knommu/include/asm.
2008-08-07powerpc/iseries: remove the old viocons driverStephen Rothwell
This driver was declared obsolete over 2 years ago, the alternative console driver for legacy iSeries (hvc_iseries) was made the default over 1 year ago and this driver has been build broken for over 3 months, so remove it. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-07sparc: don't use asm/of_device.hStephen Rothwell
Use linux/of_device.h instead. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-07[ARM] Fix SMP booting with non-zero PHYS_OFFSETRussell King
The existing code tries to get the pmd for the temporary page table by doing: pgd = pgd_alloc(&init_mm); pmd = pmd_offset(pgd, PHYS_OFFSET); Since we have a two level page table, pmd_offset() is a no-op, so this just has a casting effect from a pgd to a pmd - the address argument is unused. So this can't work. Normally, we'd do: pgd = pgd_offset(&init_mm, PHYS_OFFSET); ... pmd = pmd_offset(pgd, PHYS_OFFSET); to get the pmd you want. However, pgd_offset() takes the mm_struct, not the (unattached) pgd we just allocated. So, instead use: pgd = pgd_alloc(&init_mm); pmd = pmd_offset(pgd + pgd_index(PHYS_OFFSET), PHYS_OFFSET); Reported-by: Antti P Miettinen <ananaza@iki.fi> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-07Merge branch 'for-rmk' of ↵Russell King
git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 Conflicts: arch/arm/mach-pxa/generic.c arch/arm/mach-pxa/pxa25x.c arch/arm/mach-pxa/pxa27x.c arch/arm/mach-pxa/pxa2xx.c arch/arm/mach-pxa/pxa3xx.c arch/arm/mach-pxa/reset.c arch/arm/mach-pxa/spitz.c arch/arm/mach-pxa/tosa.c drivers/watchdog/sa1100_wdt.c
2008-08-07[ARM] 5185/1: Fix spi num_chipselect for lubbockJonathan Cameron
Change num_chipselect for lubbock ssp master to reflect requirement of spi subsystem that all buses have at least 1 chip select. Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Acked-by: Eric Miao <eric.miao@marvell.com> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-07[ARM] Move include/asm-arm/arch-* to arch/arm/*/include/machRussell King
This just leaves include/asm-arm/plat-* to deal with. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-07Merge branch 'header-move' of ↵Russell King
git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6
2008-08-07Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixesRussell King
2008-08-07[ARM] Add support for arch/arm/mach-*/include and arch/arm/plat-*/includeRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-07[ARM] Remove asm/hardware.h, use asm/arch/hardware.h insteadRussell King
Remove includes of asm/hardware.h in addition to asm/arch/hardware.h. Then, since asm/hardware.h only exists to include asm/arch/hardware.h, update everything to directly include asm/arch/hardware.h and remove asm/hardware.h. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-07[ARM] Eliminate useless includes of asm/mach-types.hRussell King
There are 43 includes of asm/mach-types.h by files that don't reference anything from that file. Remove these unnecessary includes. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-07[ARM] Fix circular include dependency with IRQ headersRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-07[netdrvr] sh_eth: Add SH7619 supportYoshinori Sato
Add support SH7619 Internal ethernet controler. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-08-06sparc64: Use kernel/uid16.c helpers instead of own copy.David S. Miller
Noticed by Adrian Bunk. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-07Move all of include/asm-m68knommu to arch/m68knommu/include/asm.Greg Ungerer
With the current kbuild infrastructure in place no other changes are required for this to work. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2008-08-06of/sparc: remove include of linux/of_platform.h from asm/of_platform.hStephen Rothwell
Now that we have removed all inclusions of asm/of_platform.h, this compatability include can be removed. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-06Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Update generic config [IA64] Fix uniprocessor build w.r.t. SGI_XP and SGI_GRU [IA64] Eliminate trailing backquote in IA64_SGI_UV [IA64] update generic_defconfig to support sn2. [IA64] update generic_defconfig for 2.6.27-rc1 [IA64] Allow ia64 to CONFIG_NR_CPUS up to 4096 [IA64] Cleanup generated file not ignored by .gitignore [IA64] pv_ops: fix ivt.S paravirtualization
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