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2009-01-15Revert "x86 PAT: remove CPA WARN_ON for zero pte"Linus Torvalds
This reverts commit 58dab916dfb57328d50deb0aa9b3fc92efa248ff, which makes my Nehalem come to a nasty crawling almost-halt. It looks like it turns off caching of regular kernel RAM, with the understandable slowdown of a few orders of magnitude as a result. Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Peter Anvin <hpa@zytor.com> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-15x86, UV: cpu_relax in uv_wait_completionCliff Wickman
The function uv_wait_completion() spins on reads of a memory-mapped register, waiting for completion of BAU hardware replies. It should call "cpu_relax()" between those reads to improve performance on hyperthreaded configurations. Signed-off-by: Cliff Wickman <cpw@sgi.com> Acked-by: Jack Steiner <steiner@sgi.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-15x86: avoid early crash in disable_local_APIC()Jan Beulich
E.g. when called due to an early panic. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-15sched: fix warning on ia64Mike Travis
Andrew Morton reported this warning on ia64: kernel/sched.c: In function `sd_init_NODE': kernel/sched.c:7449: warning: comparison of distinct pointer types lacks a cast Using the untyped min() function produces such warnings. Fix: type the constant 32 as unsigned int to match typeof(num_online_cpus). Reported-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-15[IA64] SN specific version of dma_get_required_mask()John Keller
Create a platform specific version of dma_get_required_mask() for ia64 SN Altix. All SN Altix platforms support 64 bit DMA addressing regardless of the size of system memory. Create an ia64 machvec for dma_get_required_mask, with the SN version unconditionally returning DMA_64BIT_MASK. Signed-off-by: John Keller <jpk@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-01-15[IA64] generic_defconfig: Enable SATA_VITESSEBrent Casavant
CONFIG_SATA_VITESSE=y was not added to generic_defconfig when sn2_defconfig was removed. SGI Altix systems that use an IO10 base IO card to drive the root device are unable to boot without the Vitesse controller. Signed-off-by: Brent Casavant <bcasavan@sgi.com> Signed-off-by: Robin Holt <holt@sgi.com> Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-01-15[IA64] dump stack on kernel unaligned warningsDoug Chapman
Often the cause of kernel unaligned access warnings is not obvious from just the ip displayed in the warning. This adds the option via proc to dump the stack in addition to the warning. The default is off (just display the 1 line warning). To enable the stack to be shown: echo 1 > /proc/sys/kernel/unaligned-dump-stack Signed-off-by: Doug Chapman <doug.chapman@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-01-15[IA64] Turn on CONFIG_HAVE_UNSTABLE_CLOCKTony Luck
sched_clock() on ia64 is based on ar.itc, so is never completely synchronized between cpus. On some platforms (e.g. certain models of SGI Altix) it may be running at radically different frequencies. Based on a patch from Dimitri Sivanich which set this just for SN2 && GENERIC kernels ... it is needed for all ia64 machines. Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-01-15[IA64] Update to use account_{steal,idle}_ticksIsaku Yamahata
This patch fixes the following errors caused by 79741dd35713ff4f6fd0eafd59fa94e8a4ba922d which changed the prototypes of account_steal_time() and account_idle_time(). > CC arch/ia64/xen/time.o > arch/ia64/xen/time.c: In function 'consider_steal_time': > arch/ia64/xen/time.c:132: warning: passing argument 1 of 'account_steal_time' makes integer from pointer without a cast > arch/ia64/xen/time.c:132: error: too many arguments to function 'account_steal_time' > arch/ia64/xen/time.c:133: warning: passing argument 1 of 'account_steal_time' makes integer from pointer without a cast > arch/ia64/xen/time.c:133: error: too many arguments to function 'account_steal_time' Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-01-15Merge branch 'master' of ↵Ingo Molnar
ssh://master.kernel.org/pub/scm/linux/kernel/git/travis/linux-2.6-cpus4096-for-ingo into cpus4096
2009-01-15x86: fix build warning when CONFIG_NUMA not defined.Mike Travis
Impact: fix build warning The macro cpu_to_node did not reference it's argument, and instead simply returned a 0. This causes a "unused variable" warning if it's the only reference in a function (show_cache_disable). Replace it with the more correct inline function. Signed-off-by: Mike Travis <travis@sgi.com>
2009-01-15fix: crash: IP: __bitmap_intersects+0x48/0x73Ingo Molnar
-tip testing found this crash: > [ 35.258515] calling acpi_cpufreq_init+0x0/0x127 @ 1 > [ 35.264127] BUG: unable to handle kernel NULL pointer dereference at (null) > [ 35.267554] IP: [<ffffffff80478092>] __bitmap_intersects+0x48/0x73 > [ 35.267554] PGD 0 > [ 35.267554] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c is still broken: there's no allocation of the variable mask, so we pass in an uninitialized cmd.mask field to drv_read(), which then passes it to the scheduler which then crashes ... Switch it over to the much simpler constant-cpumask-pointers approach. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-15Merge branch 'linus' into cpus4096Ingo Molnar
2009-01-15ARM: OMAP: Fix compile for h3 MMCTony Lindgren
Fix compile for h3 MMC Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-01-15Merge branches 'cpus4096', 'x86/cleanups' and 'x86/urgent' into x86/percpuIngo Molnar
2009-01-15ARM: OMAP: Remove unused platform devices, v3Tony Lindgren
This patch removes old platform devices. Alsa should now be using the ASoC driver. For boards not yet using ASoC, please see sound/soc/omap/osk5912.c. Add dummy aic23_power_up and aic23_power_down functions for 770 to keep things compiling. Remove references to omap_gpio_switch, and unused h2_nand_dev_ready function. This patch is based on an earlier patch by Arun KS. Cc: Jarkko Nikula <jarkko.nikula@nokia.com> Signed-off-by: Arun KS <arunks@mistralsolutions.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-01-15x86: fix broken flush_tlb_others_ipi(), fixIngo Molnar
Impact: cleanup Use the proper type. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-15ARM: OMAP: Fix ASoC by enabling writes to XCCR and RCCR McBSP registers, v3Tony Lindgren
This patch enables writing to McBSP Transmit Configuration Control Register (XCCR) and Receive Configuration Control Register (RCCR) for 2430/34xx platforms. It also adds XCCR, RCCR entries in McBSP register configuration structure and bit definitions for both registers. If we enable the writing to CCR registers for 2430/34xx and don't set the default values (setting 0 as a consequence) in ASoC driver, the Transmit/Receive DMA mode gets disabled and the the transmission/reception doesn't happen, ending with a "write error: Input/Output error" when playing with 'aplay'. Also define dummy CCR registers for omap1. Cc: Jarkko Nikula <jarkko.nikula@nokia.com> Signed-off-by: Misael Lopez Cruz <x0052729@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-01-15ARM: OMAP: Fix OSK ASoC by registering I2C board info for tlvaic23Arun KS
Adding I2C board info is required for tlvaic23 i2c chip driver. Cc: Jarkko Nikula <jarkko.nikula@nokia.com> Signed-off-by: Arun KS <arunks@mistralsolutions.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-01-15ARM: OMAP: remove duplicated #include'sHuang Weiyi
Removed duplicated #include's in arch/arm/mach-omap1/board-voiceblue.c Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-01-15ARM: OMAP: Fix DMA CCR programming for request line > 63, v3Anand Gadiyar
Bug in existing code causes synchro control to be set +32 if request line greater than 63 is used. Also clean up the function a bit by removing extra parens and clearing the bits at before write. Reported by Wenbiao Wang. Signed-off-by: Anand Gadiyar <gadiyar@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-01-15ARM: OMAP: Fix gpio.c compile on 15xx with CONFIG_DEBUGFSTony Lindgren
There are no wakeup registers on 15xx, and suspend_wakeup does not exist in the struct gpio_bank. Without this fix we'll get "arch/arm/plat-omap/gpio.c:1792: error: 'struct gpio_bank' has no member named 'suspend_wakeup'" as noted by Russell King. Note that the ifdefs will be cleaned up once the omap gpio code gets split into omap1 and omap2 specific parts. Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-01-15ARM: OMAP: Fix compile for beagleTony Lindgren
Move twl4030 gpio init code to where it should be. Also include twl4030.h. Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-01-15ARM: OMAP: Fix gpio by switching to generic gpio calls, v2Jarkko Nikula
Fix compile by removing remaining omap specific gpio calls. Based on earlier patches by Jarkko Nikula. Also remove old GPIO key code, there is already a patch to do this with gpio_keys. Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-01-15ARM: OMAP: Fix compile for palmteTony Lindgren
Remove old MMC platform init code accidentally left behind. Patches are welcome to the new style MMC init code. Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-01-15ARM: OMAP: Fix compile for various McBSPTony Lindgren
Include irqs.h or cpu.h directly as needed to fix omap builds. Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-01-15x86: avoid early crash in disable_local_APIC()Jan Beulich
E.g. when called due to an early panic. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-15x86: fully honor "nolapic"Jan Beulich
Impact: widen the effect of the 'nolapic' boot parameter "nolapic" should not only suppress SMP and use of the LAPIC, but it also ought to have the effect of disabling all IO-APIC related activity as well as PCI MSI and HT-IRQs. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-15irq: update all arches for new irq_desc, fixMike Travis
Impact: fix build errors Since the SPARSE IRQS changes redefined how the kstat irqs are organized, arch's must use the new accessor function: kstat_incr_irqs_this_cpu(irq, DESC); If CONFIG_SPARSE_IRQS is set, then DESC is a pointer to the irq_desc which has a pointer to the kstat_irqs. If not, then the .irqs field of struct kernel_stat is used instead. Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-14Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (29 commits) powerpc/83xx: Move mcu_mpc8349emitx driver out of drivers/i2c/chips/ powerpc/83xx: Make serial ports work on MPC8315E-RDB w/ FSL U-Boots powerpc/e500mc: Doorbells need to be taken w/exceptions disabled powerpc: Enable PS3 options and QPACE in ppc64_defconfig powerpc/powermac: Fix occasional SMP boot failure powerpc/cacheinfo: Rename cache_dir per-cpu variable hvc_console: Use kzalloc() instead of kmalloc() + memset() hvc_console: Do not set low_latency when using interrupts hvc_console: Call free_irq() only if request_irq() was successful hvc_console: Change an mb() to smp_mb() and add some comments powerpc: Cleanup from l64 to ll64 change: drivers/net powerpc: Cleanup from l64 to ll64 change: drivers/char powerpc: Cleanup from l64 to ll64 change: arch code powerpc: Change u64/s64 to a long long integer type powerpc/kexec: Check crash_base for relocatable kernel powerpc: Make dummy section a valid note header Xilinx: SPI: updated driver for device tree drivers/of: Add the of_find_i2c_device_by_node function. powerpc/xsysace: add compatible string for non-ipcore instance powerpc/mpc52xx: remove dead code from GPIO driver ...
2009-01-14Merge branch 'syscalls' of git://git390.osdl.marist.edu/pub/scm/linux-2.6Linus Torvalds
* 'syscalls' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: (44 commits) [CVE-2009-0029] s390 specific system call wrappers [CVE-2009-0029] System call wrappers part 33 [CVE-2009-0029] System call wrappers part 32 [CVE-2009-0029] System call wrappers part 31 [CVE-2009-0029] System call wrappers part 30 [CVE-2009-0029] System call wrappers part 29 [CVE-2009-0029] System call wrappers part 28 [CVE-2009-0029] System call wrappers part 27 [CVE-2009-0029] System call wrappers part 26 [CVE-2009-0029] System call wrappers part 25 [CVE-2009-0029] System call wrappers part 24 [CVE-2009-0029] System call wrappers part 23 [CVE-2009-0029] System call wrappers part 22 [CVE-2009-0029] System call wrappers part 21 [CVE-2009-0029] System call wrappers part 20 [CVE-2009-0029] System call wrappers part 19 [CVE-2009-0029] System call wrappers part 18 [CVE-2009-0029] System call wrappers part 17 [CVE-2009-0029] System call wrappers part 16 [CVE-2009-0029] System call wrappers part 15 ...
2009-01-14byteorder: make swab.h include asm/swab.h like a regular headerHarvey Harrison
Add swab.h to kbuild.asm and remove the individual entries from each arch, mark as unifdef as some arches have some kernel-only bits inside. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-14cris: introduce asm/swab.hHarvey Harrison
Adjust the arch overrides to the new names as well. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-14x86: headers cleanup - setup.hCyrill Gorcunov
Impact: cleanup 'make headers_check' warn us about leaking of kernel private (mostly compile time vars) data to userspace in headers. Fix it. Guard this one by __KERNEL__. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2009-01-14x86: headers cleanup - sigcontext32.hCyrill Gorcunov
Impact: cleanup 'make headers_check' warn us about lack of linux/types.h here. Lets add it. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2009-01-14x86: headers cleanup - prctl.hCyrill Gorcunov
Impact: cleanup (internal kernel function exported) 'make headers_check' warn us about leaking of kernel private (mostly compile time vars) data to userspace in headers. Fix it. sys_arch_prctl is completely removed from header since frankly I don't even understand why we describe it here. It is described like __SYSCALL(__NR_arch_prctl, sys_arch_prctl) in unistd_64.h and implemented in process_64.c. User-mode linux involved? So this one in fact is suspicious. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2009-01-14Revert "kbuild: strip generated symbols from *.ko"Sam Ravnborg
This reverts commit ad7a953c522ceb496611d127e51e278bfe0ff483. And commit: ("allow stripping of generated symbols under CONFIG_KALLSYMS_ALL") 9bb482476c6c9d1ae033306440c51ceac93ea80c These stripping patches has caused a set of issues: 1) People have reported compatibility issues with binutils due to lack of support for `--strip-unneeded-symbols' with objcopy 2.15.92.0.2 Reported by: Wenji 2) ccache and distcc no longer works as expeced Reported by: Ted, Roland, + others 3) The installed modules increased a lot in size Reported by: Ted, Davej + others Reported-by: Wenji Huang <wenji.huang@oracle.com> Reported-by: "Theodore Ts'o" <tytso@mit.edu> Reported-by: Dave Jones <davej@redhat.com> Reported-by: Roland McGrath <roland@redhat.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-01-14x86, pat: fix reserve_memtype() for legacy 1MB rangeSuresh Siddha
Thierry Vignaud reported: > http://bugzilla.kernel.org/show_bug.cgi?id=12372 > > On P4 with an SiS motherboard (video card is a SiS 651) > X server fails to start with error: > xf86MapVidMem: Could not mmap framebuffer (0x00000000,0x2000) (Invalid > argument) Here X is trying to map first 8KB of memory using /dev/mem. Existing code treats first 0-4KB of memory as non-RAM and 4KB-8KB as RAM. Recent code changes don't allow to map memory with different attributes at the same time. Fix this by treating the first 1MB legacy region as special and always track the attribute requests with in this region using linear linked list (and don't bother if the range is RAM or non-RAM or mixed) Reported-and-tested-by: Thierry Vignaud <tvignaud@mandriva.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-14[CVE-2009-0029] s390 specific system call wrappersHeiko Carstens
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] s390: enable system call wrappersHeiko Carstens
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] powerpc: Enable syscall wrappers for 64-bitBenjamin Herrenschmidt
This enables the use of syscall wrappers to do proper sign extension for 64-bit programs. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrapper infrastructureHeiko Carstens
From: Martin Schwidefsky <schwidefsky@de.ibm.com> By selecting HAVE_SYSCALL_WRAPPERS architectures can activate system call wrappers in order to sign extend system call arguments. All architectures where the ABI defines that the caller of a function has to perform sign extension probably need this. Reported-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] Remove __attribute__((weak)) from sys_pipe/sys_pipe2Heiko Carstens
Remove __attribute__((weak)) from common code sys_pipe implemantation. IA64, ALPHA, SUPERH (32bit) and SPARC (32bit) have own implemantations with the same name. Just rename them. For sys_pipe2 there is no architecture specific implementation. Cc: Richard Henderson <rth@twiddle.net> Cc: David S. Miller <davem@davemloft.net> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Tony Luck <tony.luck@intel.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] Rename old_readdir to sys_old_readdirHeiko Carstens
This way it matches the generic system call name convention. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14x86: make 32bit MAX_HARDIRQS_PER_CPU to be NR_VECTORSYinghai Lu
Impact: clean up to be same as 64bit 32-bit is using per-cpu vector too, so don't use default NR_IRQS. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-14Merge branch 'master' of ↵Ingo Molnar
ssh://master.kernel.org/pub/scm/linux/kernel/git/travis/linux-2.6-cpus4096-for-ingo into cpus4096
2009-01-14x86: change the default cache size to 64 bytesIngo Molnar
Right now the generic cacheline size is 128 bytes - that is wasteful when structures are aligned, as all modern x86 CPUs have an (effective) cacheline sizes of 64 bytes. It was set to 128 bytes due to some cacheline aliasing problems on older P4 systems, but those are many years old and we dont optimize for them anymore. (They'll still get the 128 bytes cacheline size if the kernel is specifically built for Pentium 4) Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Arjan van de Ven <arjan@linux.intel.com>
2009-01-14x86, tlb flush_data: replace per_cpu with an arrayFrederik Deweerdt
Impact: micro-optimization, memory reduction On x86_64 flush tlb data is stored in per_cpu variables. This is unnecessary because only the first NUM_INVALIDATE_TLB_VECTORS entries are accessed. This patch aims at making the code less confusing (there's nothing really "per_cpu") by using a plain array. It also would save some memory on most distros out there (Ubuntu x86_64 has NR_CPUS=64 by default). [ Ravikiran G Thirumalai also pointed out that the correct alignment is ____cacheline_internodealigned_in_smp, so that there's no bouncing on vsmp. ] Signed-off-by: Frederik Deweerdt <frederik.deweerdt@xprog.eu> Acked-by: Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-14x86: replacing mp_config_intsrc with mpc_intsrcJaswinder Singh Rajput
Impact: cleanup, solve 80 columns wrap problems Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-14x86: replacing mp_config_ioapic with mpc_ioapicJaswinder Singh Rajput
Impact: cleanup, solve 80 columns wrap problems Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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