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* [PATCH] ARM: Generic Dynamic Tick Timer support for ARM, take 4Russell King2005-06-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds support for Dynamic Tick Timer for ARM. Dynamic Tick is also known as VST (Variable Scheduling Timeouts). Dynamic Tick has been in use in the OMAP tree since last October. The patch is not intrusive, and does not do anything unless CONFIG_NO_IDLE_HZ is defined. This patch has the following fixed based on comments from RMK: - Time is updated before calling interrupt handlers. - Added new interrupt flag SA_TIMER to avoid duplicate timer interrupts - Moved struct dyn_tick_timer to time.h until we at some point probably have an arch independent dyn-tick.h - Cleaned up testing for DYN_TICK_ENABLED in irq.c I've cleaned up this patch to fix some remaining issues: - Call the timer tick handler with irqs disabled, as it would be from a normal interrupt - if we have a dyn_tick, we better implement all methods. - generic timer_dyn_reprogram() call, to be called before sleeping - added command line option - "dyntick=" to allow boot-time control of this feature -- rmk Signed-off-by: Tony Lindgren Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] ARM: 2752/1: disable ixp2000 PCI I/O software workaround on chips ↵Lennert Buytenhek2005-06-25
| | | | | | | | | | | | | | | | that don't need it Patch from Lennert Buytenhek The later ixp2000 models don't need the PCI I/O workaround that we currently perform. Add a config option to disable the workaround, and panic on boot if a kernel without the workaround is booted on a buggy chip. As only pre-production ixp2000s need the workaround, the default is for it not to be configured in. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Deepak Saxena Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] ARM: Fix discontigmemRussell King2005-06-25
| | | | | | The merge of sparsemem broke ARM discontigmem. Fix it. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] ARM: 2751/1: ixp2000 gpio cleanup broke ixdp2800 buildLennert Buytenhek2005-06-25
| | | | | | | | | | | | Patch from Lennert Buytenhek The ixp2000 gpio cleanup broke the ixdp2800 build as it moved some gpio-related functions from arch/platform.h to arch/gpio.h and the ixdp2x00 support code used those functions but didn't include the latter header file. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] ARM: 2750/1: add i2c platform device for enp2611 on-board i2c busLennert Buytenhek2005-06-25
| | | | | | | | | | | Patch from Lennert Buytenhek On the enp2611, GPIO 7 and 6 are connected to an on-board i2c bus that attaches to the SODIMM module slot (for SPD) and an LM84 temperature sensor. Add a platform device for this i2c bus. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] ARM: 2749/1: update ixp2000 defconfigs to 2.6.12-git6Lennert Buytenhek2005-06-25
| | | | | | | | | Patch from Lennert Buytenhek Update the defconfigs for the ixp2000 platforms to 2.6.12-git6. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] ARM: 2698/1: Enable kernel r/w access to user pages on ARMv6Catalin Marinas2005-06-24
| | | | | | | | | | | | Patch from Catalin Marinas cpu_v6_set_pte() sets the kernel access rights to r/o for user pages (L_PTE_USER) when neither L_PTE_WRITE nor L_PTE_DIRTY are set. This causes a kernel data abort when writing the TLS value in the 0xffff0000 page. This patch enables the kernel r/w access. Signed-off-by: Catalin Marinas Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] ARM: 2745/1: Fix IXP4xx debug macrosDeepak Saxena2005-06-24
| | | | | | | | | | | | | Patch from Deepak Saxena Current IXP4xx debug macros do not work in the small window between the MMU being enabled and the call to map_io() b/c the standard peripheral mapping is not properly setup for use with the low-level debug code. This patch creates a new section-aligned mapping for the UART specifically for use with the debug macros. Signed-off-by: Deepak Saxena Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] ARM: 2744/1: ixp2000 gpio irq supportLennert Buytenhek2005-06-24
| | | | | | | | | | | | | Patch from Lennert Buytenhek This patch cleans up the ixp2000 gpio irq code and implements the set_irq_type method for gpio irqs so that users can select for which events (falling edge/rising edge/level low/level high) on the gpio pin they want the corresponding gpio irq to be triggered. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Deepak Saxena Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2005-06-23
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| * [PATCH] ARM: 2730/1: S3C2410 default configuration updateBen Dooks2005-06-23
| | | | | | | | | | | | | | | | | | | | Patch from Ben Dooks Add support for the DM9000 and bring default configuration up-to-date with the latest 2.6.12 kernel release Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [PATCH] ARM: 2729/1: DM9000 platform support for S3C2410 machines (BAST, VR1000)Ben Dooks2005-06-23
| | | | | | | | | | | | | | | | | | | | Patch from Ben Dooks Add platform_device information for DM9000 chip(s) on the Simtec BAST and the VR1000 board. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [PATCH] ARM: 2722/1: remove reliance on udivdi3 for nwfpeNicolas Pitre2005-06-23
| | | | | | | | | | | | | | Patch from Nicolas Pitre Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] use ${CROSS_COMPILE}installkernel in arch/*/boot/install.shIan Campbell2005-06-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The attached patch causes the various arch specific install.sh scripts to look for ${CROSS_COMPILE}installkernel rather than just installkernel (in both /sbin/ and ~/bin/ where the script already did this). This allows you to have e.g. arm-linux-installkernel as a handy way to install on your cross target. It also prevents the script picking up on the host /sbin/installkernel which causes the script to fall through and do the install itself (which is what I actually use myself, with $INSTALL_PATH set). I don't believe it causes back-compatibility problems since calling the host installkernel was never likely to work or be what you wanted when cross compiling anyway. If $CROSS_COMPILE isn't set then nothing changes. I only use ARM and i386 myself but I figured it couldn't hurt to do the whole lot. I've cc'd those who I hope are the arch maintainers for files that I've touched. Signed-off-by: Ian Campbell <icampbell@arcom.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] make each arch use mm/KconfigDave Hansen2005-06-23
|/ | | | | | | | | | | | | | For all architectures, this just means that you'll see a "Memory Model" choice in your architecture menu. For those that implement DISCONTIGMEM, you may eventually want to make your ARCH_DISCONTIGMEM_ENABLE a "def_bool y" and make your users select DISCONTIGMEM right out of the new choice menu. The only disadvantage might be if you have some specific things that you need in your help option to explain something about DISCONTIGMEM. Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ARM: Remove explicit page-alignments in memory initRussell King2005-06-22
| | | | | | | | Since meminfo.bank[] array contains page-aligned start/size, we no longer need to explicitly round up/down the addresses when converting to PFNs. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] ARM: Ensure memory information is page alignedRussell King2005-06-22
| | | | | | | Ensure that meminfo.bank[] array contains page-aligned start/size information. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] ARM: Use list_for_each_entry() for dmabounceRussell King2005-06-22
| | | | | | | Convert dmabounce.c to use list_for_each_entry() instead of list_for_each() + list_entry(). Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] ARM: Move signal return code into vector pageRussell King2005-06-22
| | | | | | | | | Move the signal return code into the vector page instead of placing it on the user mode stack, which will allow us to avoid flushing the instruction cache on signals, as well as eventually allowing non-exec stack. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] ARM: Allow clps7500 to build without parsing "acorn" tagRussell King2005-06-22
| | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] ARM: Allow riscpc to parse "acorn" boot info tagRussell King2005-06-22
| | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] ARM: Fix sa1111.c build error caused by klist changesRussell King2005-06-22
| | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] Avoiding mmap fragmentationWolfgang Wander2005-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Ingo recently introduced a great speedup for allocating new mmaps using the free_area_cache pointer which boosts the specweb SSL benchmark by 4-5% and causes huge performance increases in thread creation. The downside of this patch is that it does lead to fragmentation in the mmap-ed areas (visible via /proc/self/maps), such that some applications that work fine under 2.4 kernels quickly run out of memory on any 2.6 kernel. The problem is twofold: 1) the free_area_cache is used to continue a search for memory where the last search ended. Before the change new areas were always searched from the base address on. So now new small areas are cluttering holes of all sizes throughout the whole mmap-able region whereas before small holes tended to close holes near the base leaving holes far from the base large and available for larger requests. 2) the free_area_cache also is set to the location of the last munmap-ed area so in scenarios where we allocate e.g. five regions of 1K each, then free regions 4 2 3 in this order the next request for 1K will be placed in the position of the old region 3, whereas before we appended it to the still active region 1, placing it at the location of the old region 2. Before we had 1 free region of 2K, now we only get two free regions of 1K -> fragmentation. The patch addresses thes issues by introducing yet another cache descriptor cached_hole_size that contains the largest known hole size below the current free_area_cache. If a new request comes in the size is compared against the cached_hole_size and if the request can be filled with a hole below free_area_cache the search is started from the base instead. The results look promising: Whereas 2.6.12-rc4 fragments quickly and my (earlier posted) leakme.c test program terminates after 50000+ iterations with 96 distinct and fragmented maps in /proc/self/maps it performs nicely (as expected) with thread creation, Ingo's test_str02 with 20000 threads requires 0.7s system time. Taking out Ingo's patch (un-patch available per request) by basically deleting all mentions of free_area_cache from the kernel and starting the search for new memory always at the respective bases we observe: leakme terminates successfully with 11 distinctive hardly fragmented areas in /proc/self/maps but thread creating is gringdingly slow: 30+s(!) system time for Ingo's test_str02 with 20000 threads. Now - drumroll ;-) the appended patch works fine with leakme: it ends with only 7 distinct areas in /proc/self/maps and also thread creation seems sufficiently fast with 0.71s for 20000 threads. Signed-off-by: Wolfgang Wander <wwc@rentec.com> Credit-to: "Richard Purdie" <rpurdie@rpsys.net> Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Acked-by: Ingo Molnar <mingo@elte.hu> (partly) Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6Linus Torvalds2005-06-20
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| * [PATCH] Driver Core: arch: update device attribute callbacksYani Ioannou2005-06-20
| | | | | | | | | | Signed-off-by: Yani Ioannou <yani.ioannou@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | [PATCH] ARM: 2719/1: enable module support in ixp2000 defconfigs by defaultLennert Buytenhek2005-06-20
| | | | | | | | | | | | | | | | | | | | | | Patch from Lennert Buytenhek The ixp2000 defconfigs are among the few that do not enable module support by default. I keep enabling module support by hand for every new kernel version, so let's just make this change upstream. Signed-off-by: Lennert Buytenhek Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] ARM: 2716/1: SharpSL Param: Fix typoRichard Purdie2005-06-20
| | | | | | | | | | | | | | | | | | Patch from Richard Purdie Fix typo in sharpsl_param.c so it works correctly on collie. Signed-off-by: Richard Purdie Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] ARM: 2701/1: free up ixp2000 timer 4 for the watchdogLennert Buytenhek2005-06-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Lennert Buytenhek The IXP2000 has four timers, but if we're on an A-step IXP2800, timer 2 and 3 don't work. We need two timers for timekeeping (one for the timer interrupt and one for tracking missed jiffies), so on early IXP2800s we have no other choice but to use timer 1 and 4 for that, but on all other IXP2000s we'd rather leave timer 4 free since that's the only timer we can use for the watchdog. So, on buggy IXP2000s (i.e. the A-step IXP2800) we use timer 4 for tracking missed jiffies, and on all all non-buggy IXP2000s (i.e. everything but the A-step IXP2800) we use timer 2. On a pre-production IXP2800, this patch should print these messages on boot: Enabling IXP2800 erratum #25 workaround Unable to use IXP2000 watchdog due to IXP2800 erratum #25 On any non-buggy IXP2800 (as well as on IXP2400s) you shouldn't see anything at all, and the watchdog should be usable again. Signed-off-by: Lennert Buytenhek Signed-off-by: Deepak Saxena Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] ARM: 2693/1: Add PCI support for Versatile/PBCatalin Marinas2005-06-20
| | | | | | | | | | | | | | | | | | | | Patch from Catalin Marinas This patch adds PCI support for the Versatile PB926 platform. Signed-off-by: Colin King Signed-off-by: Catalin Marinas Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] ARM: 2686/2: AAEC-2000 Core supportBellido Nicolas2005-06-20
| | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Bellido Nicolas Core support for AAEC-2000 based platforms. This is an updated version of the previous patch, and takes into account Russell's comments. AAED-2000 default configuration will follow as soon as some problems with the bootloader are sorted out... Signed-off-by: Nicolas Bellido Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] ARM: Add iomap support for ARMRussell King2005-06-20
| | | | | | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] ARM: Remove nmi_tick() from Integrator.Russell King2005-06-20
| | | | | | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] ARM: Add missed include for dmabounce.cRussell King2005-06-20
| | | | | | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] ARM: Lindent GCC helper functionsRussell King2005-06-20
| | | | | | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] ARM: Remove gcc type-isms from GCC helper functionsRussell King2005-06-20
| | | | | | | | | | | | | | | | | | | | | | | | | | Convert ugly GCC types to Linux types: UQImode -> u8 SImode -> s32 USImode -> u32 DImode -> s64 UDImode -> u64 word_type -> int Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] ARM: Remove obsolete arch/arm/kernel/arch.cRussell King2005-06-20
| | | | | | | | | | | | | | This is not used anymore - RiscPC now contains the necessary supporting code. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] ARM: Ensure DMA-bounced buffers are properly written to RAMRussell King2005-06-20
| | | | | | | | | | | | | | | | | | | | When DMA bounce buffers were unmapped and the data was memcpy'd to the original buffer, we were not ensuring that the data was written to RAM. This means that there was the potential for page cache pages to have different cache states depending whether they've been bounced or not. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] ARM: Add common CACHE_COLOUR macroRussell King2005-06-20
| | | | | | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] ARM: Fix delayed dcache flush for ARMv6 non-aliasing cachesRussell King2005-06-20
| | | | | | | | | | | | | | | | flush_dcache_page() did nothing for these caches, but since they suffer from I/D cache coherency issues, we need to ensure that data is written back to RAM. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] ARM SMP: Messages about CPUs should be prefixed by CPU%uRussell King2005-06-19
|/ | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* Merge with ../linux-2.6-smpRussell King2005-06-19
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| * [PATCH] ARM SMP: Add missed files from Integrator/CP platformRussell King2005-06-19
| | | | | | | | | | | | Add missed new files from basic SMP support for the Integrator/CP platform. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [PATCH] ARM SMP: Add basic support Integrator/CP platformRussell King2005-06-18
| | | | | | | | | | | | Add basic SMP support for the Integrator/CP platform. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [PATCH] ARM SMP: Add support for startup of secondary processorsRussell King2005-06-18
| | | | | | | | | | | | | | | | | | Create a temporary page table to startup secondary processors. This page table must have a 1:1 virtual/physical mapping for the kernel in addition to the standard mappings to ensure that the secondary CPU can enable its MMU safely. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] ARM SMP: Fix PXA/SA11x0 suspend resume crashRussell King2005-06-19
|/ | | | | | | We need to re-initialise the stack pointers for undefined, IRQ and abort mode handlers whenever we resume. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* Merge with ../linux-2.6-smpRussell King2005-06-18
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| * [PATCH] ARM SMP: Fix vector entryRussell King2005-05-31
| | | | | | | | | | | | | | | | | | | | The current vector entry system does not allow for SMP. In order to work around this, we need to eliminate our reliance on the fixed save areas, which breaks the way we enable alignment traps. This patch changes the way we handle the save areas such that we can have one per CPU. Signed-off-by: Russell King <rmk@arm.linux.org.uk>
| * [PATCH] ARM SMP: convert alignment enableRussell King2005-05-31
| | | | | | | | | | | | | | | | | | | | The current vector entry system does not allow for SMP. In order to work around this, we need to eliminate our reliance on the fixed save areas, which breaks the way we enable alignment traps. This patch makes the alignment trap enable code independent of the way we handle the save areas. Signed-off-by: Russell King <rmk@arm.linux.org.uk>
| * [PATCH] ARM SMP: add IPI supportRussell King2005-05-21
| | | | | | | | | | | | | | Add support for inter-processor interrupts to the main IRQ handling code. Signed-off-by: Russell King <rmk@arm.linux.org.uk>
| * [PATCH] ARM SMP: reallocate main IRQ handler code registersRussell King2005-05-21
| | | | | | | | | | | | | | By changing r9 -> r8 and r8 to 'tsk' (r9) we are able to remove one instruction from the preempt path. Signed-off-by: Russell King <rmk@arm.linux.org.uk>
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