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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-03 10:39:02 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-03 10:39:02 -0700 |
commit | 7e31aa11fc672bbe0dd0da59513c9efe3809ced7 (patch) | |
tree | 0aafe6a0045230950ce6b26579a053da12614a49 /arch/arm/include/asm/smp.h | |
parent | 071f4924844c435a3ae0cdbab7d7df2f1da85713 (diff) | |
parent | 9cb7117fa4858468014f76bd996076985111e955 (diff) | |
download | linux-7e31aa11fc672bbe0dd0da59513c9efe3809ced7.tar.gz linux-7e31aa11fc672bbe0dd0da59513c9efe3809ced7.tar.bz2 linux-7e31aa11fc672bbe0dd0da59513c9efe3809ced7.zip |
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] 5182/1: pxa: Fix pcm990 compilation
[ARM] Fix explicit asm(-arm)?/arch-foo references
[ARM] move include/asm-arm to arch/arm/include/asm
[ARM] Remove explicit dependency for misc.o from compressed/Makefile
[ARM] initrd: claim initrd memory exclusively
[ARM] pxa: add support for L2 outer cache on XScale3 (attempt 2)
[ARM] 5180/1: at91: Fix at91_nand -> atmel_nand rename fallout
[ARM] add Sascha Hauer as Freescale i.MX Maintainer
[ARM] i.MX: add missing clock functions exports
[ARM] i.MX: remove set_imx_fb_info() export
[ARM] mx1ads: make mmc platform data available for modules
[ARM] mx2: add missing Kconfig dependency
Diffstat (limited to 'arch/arm/include/asm/smp.h')
-rw-r--r-- | arch/arm/include/asm/smp.h | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/arch/arm/include/asm/smp.h b/arch/arm/include/asm/smp.h new file mode 100644 index 000000000000..cc12a525a06a --- /dev/null +++ b/arch/arm/include/asm/smp.h @@ -0,0 +1,147 @@ +/* + * arch/arm/include/asm/smp.h + * + * Copyright (C) 2004-2005 ARM Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef __ASM_ARM_SMP_H +#define __ASM_ARM_SMP_H + +#include <linux/threads.h> +#include <linux/cpumask.h> +#include <linux/thread_info.h> + +#include <asm/arch/smp.h> + +#ifndef CONFIG_SMP +# error "<asm/smp.h> included in non-SMP build" +#endif + +#define raw_smp_processor_id() (current_thread_info()->cpu) + +/* + * at the moment, there's not a big penalty for changing CPUs + * (the >big< penalty is running SMP in the first place) + */ +#define PROC_CHANGE_PENALTY 15 + +struct seq_file; + +/* + * generate IPI list text + */ +extern void show_ipi_list(struct seq_file *p); + +/* + * Called from assembly code, this handles an IPI. + */ +asmlinkage void do_IPI(struct pt_regs *regs); + +/* + * Setup the SMP cpu_possible_map + */ +extern void smp_init_cpus(void); + +/* + * Move global data into per-processor storage. + */ +extern void smp_store_cpu_info(unsigned int cpuid); + +/* + * Raise an IPI cross call on CPUs in callmap. + */ +extern void smp_cross_call(cpumask_t callmap); + +/* + * Broadcast a timer interrupt to the other CPUs. + */ +extern void smp_send_timer(void); + +/* + * Broadcast a clock event to other CPUs. + */ +extern void smp_timer_broadcast(cpumask_t mask); + +/* + * Boot a secondary CPU, and assign it the specified idle task. + * This also gives us the initial stack to use for this CPU. + */ +extern int boot_secondary(unsigned int cpu, struct task_struct *); + +/* + * Called from platform specific assembly code, this is the + * secondary CPU entry point. + */ +asmlinkage void secondary_start_kernel(void); + +/* + * Perform platform specific initialisation of the specified CPU. + */ +extern void platform_secondary_init(unsigned int cpu); + +/* + * Initial data for bringing up a secondary CPU. + */ +struct secondary_data { + unsigned long pgdir; + void *stack; +}; +extern struct secondary_data secondary_data; + +extern int __cpu_disable(void); +extern int mach_cpu_disable(unsigned int cpu); + +extern void __cpu_die(unsigned int cpu); +extern void cpu_die(void); + +extern void platform_cpu_die(unsigned int cpu); +extern int platform_cpu_kill(unsigned int cpu); +extern void platform_cpu_enable(unsigned int cpu); + +extern void arch_send_call_function_single_ipi(int cpu); +extern void arch_send_call_function_ipi(cpumask_t mask); + +/* + * Local timer interrupt handling function (can be IPI'ed). + */ +extern void local_timer_interrupt(void); + +#ifdef CONFIG_LOCAL_TIMERS + +/* + * Stop a local timer interrupt. + */ +extern void local_timer_stop(unsigned int cpu); + +/* + * Platform provides this to acknowledge a local timer IRQ + */ +extern int local_timer_ack(void); + +#else + +static inline void local_timer_stop(unsigned int cpu) +{ +} + +#endif + +/* + * Setup a local timer interrupt for a CPU. + */ +extern void local_timer_setup(unsigned int cpu); + +/* + * show local interrupt info + */ +extern void show_local_irqs(struct seq_file *); + +/* + * Called from assembly, this is the local timer IRQ handler + */ +asmlinkage void do_local_timer(struct pt_regs *); + +#endif /* ifndef __ASM_ARM_SMP_H */ |