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* Merge branches 'clks' and 'pnx' into develRussell King2010-02-25
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| * ARM: PNX4008: move i2c_adapter structure inside the drivers private dataRussell King2010-02-12
| | | | | | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: PNX4008: kzalloc i2c drivers internal dataRussell King2010-02-12
| | | | | | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: PNX4008: remove platform definitions from mach/timex.hRussell King2010-02-12
| | | | | | | | | | | | | | | | mach/timex.h is only supposed to contain a definition for CLOCK_TICK_RATE. Remove additional includes, and move private definitions to a private header file. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: PNX4008: get i2c clock rate from clk APIRussell King2010-02-12
| | | | | | | | | | Acked-by: Vitaly Wool <vitalywool@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: PNX4008: convert i2c-pnx to use clk API enable/disable callsRussell King2010-02-12
| | | | | | | | | | | | | | | | clk_set_rate() is not supposed to be used to turn clocks on and off. That's what clk_enable/clk_disable is for. Acked-by: Vitaly Wool <vitalywool@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: PNX4008: move i2c clock start/stop into driverRussell King2010-02-12
| | | | | | | | | | Acked-by: Vitaly Wool <vitalywool@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: PNX4008: move i2c suspend/resume callbacks into driverRussell King2010-02-12
| | | | | | | | | | Acked-by: Vitaly Wool <vitalywool@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: PNX4008: convert i2c clocks to match by device onlyRussell King2010-02-12
| | | | | | | | | | Acked-by: Vitaly Wool <vitalywool@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: PNX4008: convert watchdog to use clk API enable/disable callsRussell King2010-02-12
| | | | | | | | | | | | | | | | | | clk_set_rate() is not supposed to be used to turn clocks on and off. That's what clk_enable/clk_disable is for. Acked-by: Wim Van Sebroeck <wim@iguana.be> Acked-by: Vitaly Wool <vitalywool@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: PNX4008: convert watchdog clocks to match by device onlyRussell King2010-02-12
| | | | | | | | | | | | Acked-by: Wim Van Sebroeck <wim@iguana.be> Acked-by: Vitaly Wool <vitalywool@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: PNX4008: provide clock enable/disable methods and initializationRussell King2010-02-12
| | | | | | | | | | Acked-by: Vitaly Wool <vitalywool@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: PNX4008: simplify clk enable/disable pathsRussell King2010-02-12
| | | | | | | | | | Acked-by: Vitaly Wool <vitalywool@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: PNX4008: convert to clkdevRussell King2010-02-12
| | | | | | | | | | Acked-by: Vitaly Wool <vitalywool@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: Consolidate clks_register() and similarRussell King2010-02-12
| | | | | | | | | | | | | | | | | | | | | | | | | | Most machine classes want some way to register a block of clk_lookup structures, and most do it by implementing a clks_register() type function which walks an array, or by open-coding a loop. Consolidate all this into clkdev_add_table(). Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Kevin Hilman <khilman@deeprootsystems.com> Acked-by: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds2010-01-21
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf: x86: Add support for the ANY bit perf: Change the is_software_event() definition perf: Honour event state for aux stream data perf: Fix perf_event_do_pending() fallback callsite perf kmem: Print usage help for unknown commands perf kmem: Increase "Hit" column length hw-breakpoints, perf: Fix broken mmiotrace due to dr6 by reference change perf timechart: Use tid not pid for COMM change
| | * perf: x86: Add support for the ANY bitStephane Eranian2010-01-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Propagate the ANY bit into the fixed counter config for v3 and higher. Signed-off-by: Stephane Eranian <eranian@google.com> [a.p.zijlstra@chello.nl: split from larger patch] Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <4b5430c6.0f975e0a.1bf9.ffff85fe@mx.google.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * hw-breakpoints, perf: Fix broken mmiotrace due to dr6 by reference changeLuca Barbieri2010-01-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 62edab9056a6cf0c9207339c8892c923a5217e45 (from June 2009 but merged in 2.6.33) changes notify_die to pass dr6 by reference. However, it forgets to fix the check for DR_STEP in kmmio.c, breaking mmiotrace. It also passes a wrong value to the post handler. This simple fix makes mmiotrace work again. Signed-off-by: Luca Barbieri <luca@luca-barbieri.com> Acked-by: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <1263634770-14578-1-git-send-email-luca@luca-barbieri.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | Merge branch 'release' of ↵Linus Torvalds2010-01-21
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (23 commits) ACPI: delete acpi_processor_power_verify_c2() ACPI: allow C3 > 1000usec ACPI: enable C2 and Turbo-mode on Nehalem notebooks on A/C ACPI: power_meter: remove double kfree() ACPI: processor: restrict early _PDC to opt-in platforms ACPI: Fix unused variable warning in sbs.c acpi: make ACPI device id constant sony-laptop - fix using of uninitialized variable ACPI: Fix section mismatch error for acpi_early_processor_set_pdc() eeepc-laptop: disable wireless hotplug for 1201N eeepc-laptop: add hotplug_disable parameter eeepc-laptop: switch to using sparse keymap library eeepc-laptop: dmi blacklist to disable pci hotplug code eeepc-laptop: disable cpu speed control on EeePC 701 ACPI: don't cond_resched if irq is disabled ACPI: Remove unnecessary cast. ACPI: Advertise to BIOS in _OSC: _OST on _PPC changes ACPI: EC: Add wait for irq storm ACPI: SBS: Move SBS HC callback to faster Notify queue x86, ACPI: delete acpi_boot_table_init() return value ...
| | * \ Merge branch 'misc' into releaseLen Brown2010-01-20
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| | | * | x86, ACPI: delete acpi_boot_table_init() return valueLen Brown2010-01-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | cleanup only. setup_arch(), doesn't care care if ACPI initialization succeeded or failed, so delete acpi_boot_table_init()'s return value. Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | Merge branch 'sh/for-2.6.33' of ↵Linus Torvalds2010-01-21
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * 'sh/for-2.6.33' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: sh64: wire up sys_accept4. sh: unwire sys_recvmmsg. sh: ms7724: Correct sh-eth EEPROM polling timeout.
| | * | | | sh64: wire up sys_accept4.Paul Mundt2010-01-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sh64 on the other hand provides both direct broken out syscalls as well as socketcall access. As there are binaries that use both socketcall has to stay around. The current ABI prefers direct syscalls. It was pointed out that when sys_recvmmsg was added in, sys_accept4 was overlooked. This takes care of wiring it up. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | | | sh: unwire sys_recvmmsg.Paul Mundt2010-01-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sh32 at the moment only uses sys_socketcall to reach these, so unwire recvmmsg for now. While we're at it, add it to the ignore list, as per the s390 change. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | | | sh: ms7724: Correct sh-eth EEPROM polling timeout.Kuninori Morimoto2010-01-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This converts the cpu_relax() to a udelay(1), which fixes up issues with the EEPROM polling occasionally timing out. Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | | Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2010-01-21
| |\ \ \ \ \ | | |_|/ / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-arm: ARM: 5888/1: arm: Update comments in cacheflush.h and remove unnecessary V6 and V7 comments ARM: 5886/1: arm: Fix cpu_proc_fin() for proc-v7.S and make kexec work ARM: 5885/1: arm: Flush TLB entries in setup_mm_for_reboot() ARM: 5884/1: arm: Fix DCC console for v7 ARM: 5883/1: Revert "disable NX support for OABI-supporting kernels" ARM: 5882/1: ARM: Fix uncompress code compile for different defines of flush(void) ARM: fix badly placed mach/plat entries in Kconfig & Makefile
| | * | | | ARM: 5888/1: arm: Update comments in cacheflush.h and remove unnecessary V6 ↵Tony Lindgren2010-01-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | and V7 comments The comments in cacheflush.h should follow what's in struct cpu_cache_fns. The comments for V6 and V7 are unnecessary. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | | | ARM: 5886/1: arm: Fix cpu_proc_fin() for proc-v7.S and make kexec workTony Lindgren2010-01-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The comments in arm_machine_restart() suggest that cpu_proc_fin() will clean and disable cache and turn off interrupts. This does not seem to be implemented for proc-v7.S, implement it the same way as for proc-v6.S. This also makes kexec work for v7. Note that a related TLB and branch traget flush patch is also needed to avoid kexec "crc error". Note that there are still some issues that seem to be related to L2 cache being on and causing occasional uncompress "crc error" with kexec. Anyways, this gets kexec mostly working on V7 for now. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | | | ARM: 5885/1: arm: Flush TLB entries in setup_mm_for_reboot()Tony Lindgren2010-01-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We need to do that if we tinker with the MMU entries. This fixes the occasional bug with kexec where the new fails to uncompress with "crc error". Most likely at least kexec on v6 and v7 need this fix. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | | | | | Merge branch 'misc2' into develRussell King2010-02-25
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| * | | | | | ARM: Eliminate decompressor -Dstatic= PIC hackRussell King2010-02-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We used to build decompressors with -Dstatic= to avoid any local data being generated. The problem is that local data generates GOTOFF relocations, which means we can't relocate the data relative to the text segment. Global data, on the other hand, goes through the GOT, and can be relocated anywhere. Unfortunately, with the new decompressors, this presents a problem since they declare static data within functions, and this leads to stack overflow. Fix this by separating out the decompressor code into a separate file, and removing 'static' from BSS data in misc.c. Also, discard the .data section - this means that should we end up with read/write initialized data, the decompressor will fail to link and the problem will be obvious. Acked-by: Nicolas Pitre <nico@fluxnic.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | ARM: 5952/1: ARM: MM: Add ARM_L1_CACHE_SHIFT_6 for handle inside each ARCH ↵Kukjin Kim2010-02-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kconfig Add ARM_L1_CACHE_SHIFT_6 to arch/arm/Kconfig to allow CPUs with L1 cache lines which are 64bytes to indicate this without having to alter the arch/arm/mm/Kconfig entry each time. Update the mm Kconfig so that ARM_L1_CACHE_SHIFT default value uses this and change OMAP3 and S5PC1XX to select ARM_L1_CACHE_SHIFT_6. Acked-by: Ben Dooks <ben-linux@fluff.org> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | ARM: 5929/1: Add checks to detect overlap of memory regions.Fenkart/Bostandzhyan2010-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Andreas Fenkart <andreas.fenkart@streamunlimited.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | ARM: 5928/1: Change type of VMALLOC_END to unsigned long.Fenkart/Bostandzhyan2010-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Makes it consistent with VMALLOC_START Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Andreas Fenkart <andreas.fenkart@streamunlimited.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | ARM: 5927/1: Make delimiters of DMA area globally visibly.Fenkart/Bostandzhyan2010-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds DMA area to 'virtual memory map' startup message Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Andreas Fenkart <andreas.fenkart@streamunlimited.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | ARM: 5926/1: Add "Virtual kernel memory..." printout.Fenkart/Bostandzhyan2010-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Code based on parisc and x86_32. Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Andreas Fenkart <andreas.fenkart@streamunlimited.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | ARM: 5920/1: OMAP4: Enable L2 CacheSantosh Shilimkar2010-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables L2 cache and associated Errata on the OMAP4430 SDP. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | ARM: 5919/1: ARM: L2 : Errata 588369: Clean & Invalidate do not invalidate ↵Santosh Shilimkar2010-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | clean lines This patch implements the work-around for the errata 588369.The secure API is used to alter L2 debug register because of trust-zone. This version updated with comments from Russell and Catalin and generated against 2.6.33-rc6 mainline kernel. Detail comments can be found: http://www.spinics.net/lists/linux-omap/msg23431.html Signed-off-by: Woodruff Richard <r-woodruff2@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | ARM: 5917/1: OMAP4: Add L2 Cache supportSantosh Shilimkar2010-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds L2 Cache support for OMAP4. External L2 cache is used in OMAP4 CC: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | ARM: 5916/1: ARM: L2 : Add maintainace by line helper functionsSantosh Shilimkar2010-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the cache maintainance by line helper functions. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | ARM: vfp ptrace: no point flushing hw context for PTRACE_GETVFPREGSRussell King2010-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If we're only reading the VFP context via the ptrace call, there's no need to invalidate the hardware context - we only need to do that on PTRACE_SETVFPREGS. This allows more efficient monitoring of a traced task. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | ARM: vfp: fix vfp_sync_state()Russell King2010-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The more I look at vfp_sync_state(), the more I believe it's trying to do its job in a really obscure way. Essentially, last_VFP_context[] tracks who owns the state in the VFP hardware. If last_VFP_context[] is the context for the thread which we're interested in, then the VFP hardware has context which is not saved in the software state - so we need to bring the software state up to date. If last_VFP_context[] is for some other thread, we really don't care what state the VFP hardware is in; it doesn't contain any information pertinent to the thread we're trying to deal with - so don't touch the hardware. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | ARM: ptrace: get rid of PTRACE_{PEEK,POKE}{TEXT,DATA}Russell King2010-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The generic ptrace_request() handles these for us, so there's no need to duplicate them in arch code. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | ARM: 5912/1: Define a 32-bit Thumb-2 breakpoint instructionDaniel Jacobowitz2010-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Recognize 0xf7f0 0xa000 as a 32-bit breakpoint instruction for Thumb-2. Signed-off-by: Daniel Jacobowitz <dan@codesourcery.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | ARM: 5911/1: ARM: Select CPU_32v6K for CPU_V7 only if ARCH_OMAP2 is not selectedTony Lindgren2010-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Otherwise the kernel built with both CPU_V6 and CPU_V7 will not boot on omap2. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | ARM: 5905/1: ARM: Global ASID allocation on SMPCatalin Marinas2010-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current ASID allocation algorithm doesn't ensure the notification of the other CPUs when the ASID rolls over. This may lead to two processes using the same ASID (but different generation) or multiple threads of the same process using different ASIDs. This patch adds the broadcasting of the ASID rollover event to the other CPUs. To avoid a race on multiple CPUs modifying "cpu_last_asid" during the handling of the broadcast, the ASID numbering now starts at "smp_processor_id() + 1". At rollover, the cpu_last_asid will be set to NR_CPUS. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | ARM: 5906/1: arm: change command_line to cmd_lineJeremy Kerr2010-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | drivers/of/fdt expects a cmd_line symbol, while arm uses command_line. Change to the former, so that we can eventually share with the fdt code. Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | ARM: 5897/1: spinlock: don't use deprecated barriers on ARMv7Rabin Vincent2010-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On ARMv7, the use of the cp15 operations for barriers is deprecated in favour of the isb, dsb, and dmb instructions. Change the locking functions to use the appropriate type of dsb for the architecture being built for. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | ARM: 5889/1: Add atomic64 routines for ARMv6k and above.Will Deacon2010-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In preparation for perf-events support, ARM needs to support atomic64_t operations. v6k and above support the ldrexd and strexd instructions to do just that. This patch adds atomic64 support to the ARM architecture. v6k and above make use of new instructions whilst older cores fall back on the generic solution using spinlocks. If and when v7-M cores are supported by Linux, they will need to fall back on the spinlock implementation too. Signed-off-by: Will Deacon <will.deacon@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | ARM: add notify_die() supportRussell King2010-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kernel debuggers want to be informed of die() events, so that they can take some action to allow the problem to be inspected. Provide the hook in a similar manner to x86. Note that we currently don't implement the individual trap hooks. Acked-by: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>