- 23 5月, 2011 1 次提交
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由 Russell King 提交于
Rather than having each platform class provide a mach/smp.h header for smp_cross_call(), arrange for them to register the function with the core ARM SMP code instead. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 19 2月, 2011 1 次提交
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由 Russell King 提交于
Realview and Versatile Express share the same SMP bringup code, so consolidate the two implementations. Acked-by: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 25 1月, 2011 1 次提交
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由 Russell King 提交于
Fix two section mismatch warnings in the platform SMP bringup code for Realview and Versatile Express: WARNING: arch/arm/mach-realview/built-in.o(.text+0x8ac): Section mismatch in reference from the function write_pen_release() to the variable .cpuinit.data:pen_release The function write_pen_release() references the variable __cpuinitdata pen_release. This is often because write_pen_release lacks a __cpuinitdata annotation or the annotation of pen_release is wrong. WARNING: arch/arm/mach-vexpress/built-in.o(.text+0x7b4): Section mismatch in reference from the function write_pen_release() to the variable .cpuinit.data:pen_release The function write_pen_release() references the variable __cpuinitdata pen_release. This is often because write_pen_release lacks a __cpuinitdata annotation or the annotation of pen_release is wrong. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 20 12月, 2010 4 次提交
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由 Russell King 提交于
There is a subtle race in the CPU hotplug code, where a CPU which has been offlined can online itself before being requested, which results in things going astray on the next online/offline cycle. What happens in the normal online/offline/online cycle is: CPU0 CPU3 requests boot of CPU3 pen_release = 3 flush cache line checks pen_release, reads 3 starts boot pen_release = -1 ... requests CPU3 offline ... ... dies ... checks pen_release, reads -1 requests boot of CPU3 pen_release = 3 flush cache line checks pen_release, reads 3 starts boot pen_release = -1 However, as the write of -1 of pen_release is not fully flushed back to memory, and the checking of pen_release is done with caches disabled, this allows CPU3 the opportunity to read the old value of pen_release: CPU0 CPU3 requests boot of CPU3 pen_release = 3 flush cache line checks pen_release, reads 3 starts boot pen_release = -1 ... requests CPU3 offline ... ... dies ... checks pen_release, reads 3 starts boot pen_release = -1 requests boot of CPU3 pen_release = 3 flush cache line Fix this by grouping the write of pen_release along with its cache line flushing code to ensure that any update to pen_release is always pushed out to physical memory. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
All platforms call trace_hardirqs_off() in their secondary startup code, so move this into the core SMP code - it doesn't need to be in the per-platform code. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
There is a certain amount of smp_prepare_cpus() which doesn't belong in the platform support code - that is, code which is invariant to the SMP implementation. Move this code into arch/arm/kernel/smp.c, and add a platform_ prefix to the original function. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
scu_get_core_count() never returns zero cores, so we don't need to check and correct if ncores is zero. Tegra was missing the check against NR_CPUS, leading to a potential bitfield overflow if this becomes the case. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 15 12月, 2010 1 次提交
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由 Russell King 提交于
We don't need to re-pass the base address for the CPU interfaces to the GIC for secondary CPUs, as it will never be different from the boot CPU - and even if it was, we'd overwrite the boot CPU's base address. Get rid of this argument, and rename to gic_secondary_init(). Reviewed-by: NCatalin Marinas <catalin.marinas@arm.com> Tested-by: NAbhijeet Dharmapurikar <adharmap@codeaurora.org> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 03 12月, 2010 1 次提交
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由 Russell King 提交于
This allows us to use smp_cross_call() to trigger a number of different software generated interrupts, rather than combining them all on one SGI. Recover the SGI number via do_IPI. Reviewed-by: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 02 5月, 2010 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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- 05 11月, 2009 1 次提交
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由 Colin Tuckley 提交于
The platsmp.c file defines the REALVIEW_SYS_FLAGS* macros which are already present in platform.h. Just use the latter. Signed-off-by: NColin Tuckley <colin.tuckley@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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- 24 7月, 2009 1 次提交
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由 Catalin Marinas 提交于
This patch sets bit 0 in the startup address passed to the secondary CPUs so that they branch into Thumb-2 mode. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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- 30 5月, 2009 1 次提交
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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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- 28 5月, 2009 1 次提交
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由 Russell King 提交于
Convert cpu_*_mask bit twiddling to the new set_cpu_*() API. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 18 5月, 2009 4 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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由 Russell King 提交于
The SCU can be used by non-realview platforms, so make it visible for other people to use rather than having them copy the header file. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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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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由 Russell King 提交于
Having discussed broadcast tick support with Thomas Glexiner, the broadcast tick devices should be registered with a higher rating than the global tick device, and it should have the ONESHOT and PERIODIC feature flags set. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk> Acked-by: NThomas Glexiner <tglx@linutronix.de>
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- 17 5月, 2009 2 次提交
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由 Russell King 提交于
smp_cross_call_done() is a no-op for MPCore, and since it's only used by platform code, there's no point in having it unless it's doing something. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
The ARM SMP code wasn't properly updated for the cpumask changes, which results in smp_timer_broadcast() broadcasting ticks to non-online CPUs. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 09 1月, 2009 1 次提交
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由 Russell King 提交于
arch/arm/mach-realview/platsmp.c:140: error: 'jiffies' undeclared (first use in this function) drivers/amba/bus.c:246: error: 'NO_IRQ' undeclared (first use in this function) Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 01 12月, 2008 3 次提交
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由 Catalin Marinas 提交于
Some of the calls weren't necessary and some others were duplicated. This patch tidies up the platsmp.c file. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Catalin Marinas 提交于
All the cases where the local timer for a CPU is accessed happen on the corresponding current CPU, hence no need to access the per-CPU local timer mappings. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Jon Callan 提交于
This patch adds the necessary definitions and Kconfig entries to enable Cortex-A9 (ARMv7 SMP) tiles on the RealView/EB board. Signed-off-by: NJon Callan <Jon.Callan@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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- 06 9月, 2008 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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- 07 8月, 2008 2 次提交
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由 Russell King 提交于
This just leaves include/asm-arm/plat-* to deal with. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
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: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 03 7月, 2008 1 次提交
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由 Catalin Marinas 提交于
This patch annotates the platform_secondary_init function in arch/arm/mach-realview/platsmp.c with trace_hardirqs_off to avoid a warning when LOCKDEP and TRACE_IRQFLAGS are enabled. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 01 7月, 2008 1 次提交
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由 Catalin Marinas 提交于
This patch annotates the platform_secondary_init function in arch/arm/mach-realview/platsmp.c with trace_hardirqs_off to avoid a warning when LOCKDEP and TRACE_IRQFLAGS are enabled. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 19 4月, 2008 2 次提交
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由 Catalin Marinas 提交于
This patch adds the initialisation calls for the SMP support on the PB11MPCore platform. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Catalin Marinas 提交于
This patch moves the SCU initialisation from __v6_setup to the smp_prepare_cpus() function as it relies on platform-specific settings. Changes to get_core_count() are mainly for allowing cleaner code with the upcoming PB11MPCore patches. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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- 05 2月, 2008 3 次提交
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由 Catalin Marinas 提交于
This patch adds the core-tile detection and only enables devices if the corresponding tile is present. It currently detects the ARM11MPCore via the core_tile_eb11mp() macro. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Catalin Marinas 提交于
This patch moves the platform specific definitions from platform.h into the board-eb.h file. It drops the INT_* definitions as they are no longer used in irqs.h (moved to board-eb.h). It renames REALVIEW_* macros to REALVIEW_EB_* or REALVIEW_EB11MP_* to distinguish between standard EB and EB + the ARM11MPCore tile. The platform.h file contains common definitions to the RealView platforms and it is only directly included in board-*.h files. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Catalin Marinas 提交于
This patch adds dummy local timers for each CPU so that the board clock device is used to broadcast events to the other CPUs. The patch also adds the declaration for the dummy_timer_setup function (the equivalent of local_timer_setup when CONFIG_LOCAL_TIMERS is not set). Due to the way clockevents work, the dummy timer on the first CPU has to be registered before the board timer. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 16 2月, 2007 1 次提交
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由 Catalin Marinas 提交于
In some situations, the pen_release store in platform_secondary_init() may stay forever in the write buffer while the CPU is waiting on the boot_lock to be released in boot_secondary(). The primary CPU could never see the pen_release update without the barriers. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 15 2月, 2007 1 次提交
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由 Catalin Marinas 提交于
The current implementation only assumes one GIC to be present in the system. However, there are platforms with more than one cascaded interrupt controllers (RealView/EB MPCore for example). Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 16 2月, 2006 1 次提交
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由 Russell King 提交于
A change to the SMP initialisation caused the following oops: CPU1: Booted secondary processor CPU1: D VIPT write-back cache CPU1: I cache: 32768 bytes, associativity 4, 32 byte lines, 256 sets CPU1: D cache: 32768 bytes, associativity 4, 32 byte lines, 256 sets <7>Calibrating delay loop... 83.14 BogoMIPS (lpj=415744) <1>Unable to handle kernel NULL pointer dereference at virtual address 0000001c ... PC is at enqueue_task+0x1c/0x64 LR is at activate_task+0xcc/0xe4 SMP initialisation now requires cpu_possible_map to be initialised in setup_arch(). Move this from smp_prepare_cpus() to smp_init_cpus() and call it from our setup_arch() if CONFIG_SMP is enabled. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 16 11月, 2005 1 次提交
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由 Russell King 提交于
Move __io_address to arch-realview/hardware.h, drop core.h from platsmp.c and localtimer.c, and include asm/io.h where required. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 09 11月, 2005 1 次提交
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由 Russell King 提交于
Add platform specific parts for local timer support for the Realview board. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 08 11月, 2005 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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