- 13 2月, 2010 2 次提交
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由 Jamie Iles 提交于
The perf events subsystem allows counting of both hardware and software events. This patch implements the bare minimum for software performance events. Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: NJamie Iles <jamie.iles@picochip.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Jamie Iles 提交于
To add support for perf events and to allow the hardware counters to be shared with oprofile, we need a way to reserve access to the pmu (performance monitor unit). Platforms with PMU interrupts should register the interrupts in arch/arm/kernel/pmu.c Signed-off-by: NJamie Iles <jamie.iles@picochip.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 14 12月, 2009 1 次提交
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由 Russell King 提交于
Fix: arch/arm/mach-sa1100/generic.c:117: error: redefinition of 'cpufreq_get' include/linux/cpufreq.h:299: error: previous definition of 'cpufreq_get' was here cpufreq_get() is used on these platforms to tell drivers what the CPU frequency is, and therefore the bus frequency - which is critical for setting the PCMCIA and LCD timings. Adding ifdefs to these drivers to select cpufreq_get() or some other interface adds confusion. Making these drivers use some other interface for the normal paths and cpufreq stuff for the cpufreq notifier is insane as well. (Why x86 can't provide a version of cpufreq_get() which returns the CPU frequency when CPUFREQ is disabled is beyond me, rather than requiring a dummy zero-returning cpufreq_get(). Especially as they do: unsigned long khz = cpufreq_get(cpu); if (!khz) khz = tsc_khz; In other words, if CPUFREQ is disabled, get it from tsc_khz - why not provide a dummy cpufreq_get() which returns tsc_khz?) Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 01 12月, 2009 1 次提交
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由 Ben Dooks 提交于
We inted to re-organise the plat-s3c/plat-s3c24xx/plat-s3c64xx into a more generic plat-samsung with less code in the other plat- directories to make it easier to port new devices and try and clear up some of the naming issues with newer devices. Start by creating a small arch/arm/plat-samsung with no actuall code in so we can move items in as we process them. Add this to arch/arm to allow it to build things once support is added. Signed-off-by: NBen Dooks <ben-linux@fluff.org>
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- 28 11月, 2009 3 次提交
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由 Srinidhi Kasagar 提交于
This hooks the U8500 support into the ARM kbuild system. This integration also enables SMP and its helper functions for U8500 platform Signed-off-by: Nsrinidhi kasagar <srinidhi.kasagar@stericsson.com> Acked-by: NAndrea Gallo <andrea.gallo@stericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Srinidhi Kasagar 提交于
Introduce the plat-nomadik folder for ST-Ericsson machines including the existing nomadik 8815 architecture. This also moves the existing MTU (MultiTimerUnit) of nomadik 8815 to the proposed plat-nomadik and adds HAS_MTU. The patch has been re-based to 2.6.32-rc6 Signed-off-by: Nsrinidhi kasagar <srinidhi.kasagar@stericsson.com> Acked-by: NAlessandro Rubini <rubini@unipv.it> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Saeed Bishara 提交于
The Marvell Dove (88AP510) is a high-performance, highly integrated, low power SoC with high-end ARM-compatible processor (known as PJ4), graphics processing unit, high-definition video decoding acceleration hardware, and a broad range of peripherals. Signed-off-by: NLennert Buytenhek <buytenh@marvell.com> Signed-off-by: NSaeed Bishara <saeed@marvell.com> Signed-off-by: NNicolas Pitre <nico@marvell.com>
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- 30 10月, 2009 2 次提交
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由 Mikael Pettersson 提交于
This updates the IOP platform to use the kernel's generic time framework. With clockevent support in place, this reduces to selecting GENERIC_TIME and removing the platform's private timer ->offset() operation (iop_gettimeoffset). Tested on n2100, compile-tested for all plat-iop machines. Signed-off-by: NMikael Pettersson <mikpe@it.uu.se> Signed-off-by: NDan Williams <dan.j.williams@intel.com>
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由 Mikael Pettersson 提交于
This updates the IOP platform to expose the interrupting timer 0 as a clockevent object. The timer interrupt handler is changed to call the clockevent ->event_handler() instead of timer_tick(), and ->set_next_event() and ->set_mode() operations are added to allow the mode of the timer to be updated (required for ONESHOT/NOHZ mode). Timer 0 must now be properly initialised, which requires a new write_tcr0() function from the mach-specific code. The mode of timer 0 must be read at the start of ->set_mode(), which requires a new read_tmr0() function from the mach- specific code. Initial setup of timer 0 is also rewritten to be more robust. Tested on n2100, compile-tested for all plat-iop machines. Signed-off-by: NMikael Pettersson <mikpe@it.uu.se> Signed-off-by: NDan Williams <dan.j.williams@intel.com>
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- 16 9月, 2009 1 次提交
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由 Linus Walleij 提交于
This adds the TCM interface to Linux, when active, it will detect and report TCM memories and sizes early in boot if present, introduce generic TCM memory handling, provide a generic TCM memory pool and select TCM memory for the U300 platform. See the Documentation/arm/tcm.txt for documentation. Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 18 8月, 2009 1 次提交
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由 Russell King 提交于
Add the ARM implementation of highpte, which allows PTE tables to be placed in highmem. Unfortunately, we do not offer highpte support when support for L2 cache is enabled. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 17 8月, 2009 1 次提交
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由 Byungho Min 提交于
S5PC100 is a new SoC with ARM coretex-A8 and numerous peripherals. This SoC is successor of S3C64XX. S5PC100 has peripherals which are still similar to S3C families so some drivers in "arch/arm/plat-s3c" can be shared. S5PC100 specific drivers will be added in "arch/arm/plat-s5pcxx" or "arch/arm/mach-s5pc100" Signed-off-by: NByungho Min <bhmin@samsung.com> [ben-linux@fluff.org: tidy and edit description] Signed-off-by: NBen Dooks <ben-linux@fluff.org>
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- 15 8月, 2009 3 次提交
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由 Leo Chen 提交于
add bcmring option in Kconfig and add entry in Makefile in arch/arm directory Signed-off-by: NLeo Chen <leochen@broadcom.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 wanzongshun 提交于
Provide more useful introduction for w90x900 Signed-off-by: NWan ZongShun <mcuos.com@gmail.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 wanzongshun 提交于
Add clocksource/clockevent support for w90p910 platform. Signed-off-by: NWan ZongShun <mcuos.com@gmail.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 14 8月, 2009 2 次提交
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由 Uwe Kleine-König 提交于
The changes introduced by this change are: - drivers/mtd/Kconfig doesn't depend on ALIGNMENT_TRAP || !CPU_CP15_MMU any more - the following files are sourced additionally: + drivers/macintosh/Kconfig completely depends on PPC || MAC || X86 + drivers/telephony/Kconfig new + drivers/pps/Kconfig new + drivers/infiniband/Kconfig new + drivers/edac/Kconfig depends on X86 || PPC + drivers/vlynq/Kconfig depends on AR7 && EXPERIMENTAL (that is ARCH_MIPS) + drivers/xen/Kconfig everything depends on XEN + drivers/platform/Kconfig depends on X86 - drivers/regulator/Kconfig is sourced later as is drivers/accessibility/Kconfig Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
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由 Uwe Kleine-König 提交于
before this patch ARM had it's own definition of CONFIG_PREEMPT. Instead of that use the general definition provided in kernel/Kconfig.preempt. This patch changes the available options in *config. Namely PREEMPT isn't a stand alone bool anymore, but part of a 'choice' the following Kconfig symbols are added: PREEMPT_NONE PREEMPT_VOLUNTARY Selecting PREEMPT_NONE now produces exactly the code as not selecting PREEMPT before (apart from a comment in /sys/kernel/debug/tracing/(per_cpu/cpuX/)?trace). The only difference PREEMPT_VOLUNTARY does is that might_resched might reschedule. Both should't introduce regressions. Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Russell King <linux@arm.linux.org.uk>
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- 31 7月, 2009 3 次提交
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由 Ben Dooks 提交于
Add debugfs support for the cpufreq driver to allow information about the system state to be exported to the user. Signed-off-by: NBen Dooks <ben@simtec.co.uk> Signed-off-by: NBen Dooks <ben-linux@fluff.org>
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由 Ben Dooks 提交于
Add the S3C24XX to the main ARM CPUFreq Kconfig support list. Signed-off-by: NBen Dooks <ben@simtec.co.uk> Signed-off-by: NBen Dooks <ben-linux@fluff.org>
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由 Ben Dooks 提交于
Add ARCH_HAS_CPUFREQ so that each machine config can select it if they have CPUFREQ driver support. This means that the CPUFREQ specific area does not need the if statement updating each time a new machine is added. Signed-off-by: NBen Dooks <ben@simtec.co.uk> Signed-off-by: NBen Dooks <ben-linux@fluff.org>
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- 24 7月, 2009 3 次提交
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由 Hyok S. Choi 提交于
MMU option is now selectable. Signed-off-by: NHyok S. Choi <hyok.choi@samsung.com>
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由 Catalin Marinas 提交于
This patch adds the necessary entries to the Makefile and Kconfig files for building the Thumb-2 kernel. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Catalin Marinas 提交于
This patch adds various C and assembler macros that help with using the unified assembler syntax for compiling files to either ARM or Thumb-2 modes. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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- 17 7月, 2009 1 次提交
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由 wanzongshun 提交于
Add HAVE_CLK depends on for w90p910 platform. Signed-off-by: NWan ZongShun <mcuos.com@gmail.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 07 7月, 2009 1 次提交
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由 Russell King 提交于
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 06 7月, 2009 1 次提交
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由 Russell King 提交于
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 03 7月, 2009 2 次提交
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由 Alessandro Rubini 提交于
Signed-off-by: NAlessandro Rubini <rubini@unipv.it> Acked-by: NAndrea Gallo <andrea.gallo@stericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Alessandro Rubini 提交于
This patch adds the basic infrastructure for the Nomadik 8815 CPU and the "Nomadik Hardware Kit" NHK8815. This patch only includes the serial console and core stuff, no drivers. Signed-off-by: NAlessandro Rubini <rubini@unipv.it> Acked-by: NAndrea Gallo <andrea.gallo@stericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 17 6月, 2009 1 次提交
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由 Mark Brown 提交于
This patch provides initial support for CPU frequency scaling on the Samsung S3C ARM processors. Currently only S3C6410 processors are supported, though addition of another data table with supported clock rates should be sufficient to enable support for further CPUs. Use the regulator framework to provide optional support for DVFS in the S3C cpufreq driver. When a software controllable regulator is configured the driver will use it to lower the supply voltage when running at a lower frequency, giving improved power savings. When regulator support is disabled or no regulator can be obtained for VDDARM the driver will fall back to scaling only the frequency. Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: NBen Dooks <ben-linux@fluff.org>
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- 11 6月, 2009 2 次提交
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由 wanzongshun 提交于
Add clock api for w90p910 platform. Signed-off-by: NWan ZongShun <mcuos.com@gmail.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 wanzongshun 提交于
Add gpio api for w90p910 platform. Signed-off-by: NWan ZongShun <mcuos.com@gmail.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 09 6月, 2009 2 次提交
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由 Santosh Shilimkar 提交于
This patch enables SMP on OMAP4430 SDP platform. Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
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由 Erik Benada 提交于
Signed-off-by: NErik Benada <erikbenada@yahoo.ca> [ nico: fix locking, additional cleanups ] Signed-off-by: NNicolas Pitre <nico@marvell.com>
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- 31 5月, 2009 1 次提交
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由 Russell King 提交于
Kconfig entries default to n, so there's no need for this to be explicitly specified. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 30 5月, 2009 4 次提交
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由 Colin Tuckley 提交于
Signed-off-by: NColin Tuckley <Colin.Tuckley@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Colin Tuckley 提交于
This is a RealView platform supporting core tiles with ARM11MPCore, Cortex-A8 or Cortex-A9 (multicore) processors. It has support for MMC, CompactFlash, PCI-E. Signed-off-by: NColin Tuckley <colin.tuckley@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Catalin Marinas 提交于
Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Lennert Buytenhek 提交于
This implements {copy_to,clear}_user() by faulting in the userland pages and then using the regular kernel mem{cpy,set}() to copy the data (while holding the page table lock). This is a win if the regular mem{cpy,set}() implementations are faster than the user copy functions, which is the case e.g. on Feroceon, where 8-word STMs (which memcpy() uses under the right conditions) give significantly higher memory write throughput than a sequence of individual 32bit stores. Here are numbers for page sized buffers on some Feroceon cores: - copy_to_user on Orion5x goes from 51 MB/s to 83 MB/s - clear_user on Orion5x goes from 89MB/s to 314MB/s - copy_to_user on Kirkwood goes from 240 MB/s to 356 MB/s - clear_user on Kirkwood goes from 367 MB/s to 1108 MB/s - copy_to_user on Disco-Duo goes from 248 MB/s to 398 MB/s - clear_user on Disco-Duo goes from 328 MB/s to 1741 MB/s Because the setup cost is non negligible, this is worthwhile only if the amount of data to copy is large enough. The operation falls back to the standard implementation when the amount of data is below a certain threshold. This threshold was determined empirically, however some targets could benefit from a lower runtime determined value for optimal results eventually. In the copy_from_user() case, this technique does not provide any worthwhile performance gain due to the fact that any kind of read access allocates the cache and subsequent 32bit loads are just as fast as the equivalent 8-word LDM. Signed-off-by: NLennert Buytenhek <buytenh@marvell.com> Signed-off-by: NNicolas Pitre <nico@marvell.com> Tested-by: NMartin Michlmayr <tbm@cyrius.com>
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- 29 5月, 2009 1 次提交
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由 David Brownell 提交于
Provide a generic SRAM allocator using genalloc, and vaguely modeled after what AVR32 uses. This builds on top of the static CPU mapping set up in the previous patch, and returns DMA mappings as requested (if possible). Compared to its OMAP cousin, there's no current support for (currently non-existent) DaVinci power management code running in SRAM; and this has ways to deallocate, instead of being allocate-only. The initial user of this should probably be the audio code, because EDMA from DDR is subject to various dropouts on at least DM355 and DM6446 chips. Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net> Signed-off-by: NKevin Hilman <khilman@deeprootsystems.com>
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- 18 5月, 2009 1 次提交
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由 Mel Gorman 提交于
pfn_valid() is meant to be able to tell if a given PFN has valid memmap associated with it or not. In FLATMEM, it is expected that holes always have valid memmap as long as there is valid PFNs either side of the hole. In SPARSEMEM, it is assumed that a valid section has a memmap for the entire section. However, ARM and maybe other embedded architectures in the future free memmap backing holes to save memory on the assumption the memmap is never used. The page_zone linkages are then broken even though pfn_valid() returns true. A walker of the full memmap must then do this additional check to ensure the memmap they are looking at is sane by making sure the zone and PFN linkages are still valid. This is expensive, but walkers of the full memmap are extremely rare. This was caught before for FLATMEM and hacked around but it hits again for SPARSEMEM because the page_zone linkages can look ok where the PFN linkages are totally screwed. This looks like a hatchet job but the reality is that any clean solution would end up consumning all the memory saved by punching these unexpected holes in the memmap. For example, we tried marking the memmap within the section invalid but the section size exceeds the size of the hole in most cases so pfn_valid() starts returning false where valid memmap exists. Shrinking the size of the section would increase memory consumption offsetting the gains. This patch identifies when an architecture is punching unexpected holes in the memmap that the memory model cannot automatically detect and sets ARCH_HAS_HOLES_MEMORYMODEL. At the moment, this is restricted to EP93xx which is the model sub-architecture this has been reported on but may expand later. When set, walkers of the full memmap must call memmap_valid_within() for each PFN and passing in what it expects the page and zone to be for that PFN. If it finds the linkages to be broken, it assumes the memmap is invalid for that PFN. Signed-off-by: NMel Gorman <mel@csn.ul.ie> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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