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Linux Kernel
3.7.1
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All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
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Linux Kernel
3.7.1
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#include <linux/kernel.h>#include <linux/delay.h>#include <linux/init.h>#include <linux/interrupt.h>#include <linux/kernel_stat.h>#include <linux/proc_fs.h>#include <linux/mm.h>#include <linux/random.h>#include <linux/sched.h>#include <linux/seq_file.h>#include <linux/kallsyms.h>#include <linux/kgdb.h>#include <linux/ftrace.h>#include <linux/atomic.h>#include <asm/uaccess.h>Go to the source code of this file.
Functions | |
| int | allocate_irqno (void) |
| void __init | alloc_legacy_irqno (void) |
| void | free_irqno (unsigned int irq) |
| void | ack_bad_irq (unsigned int irq) |
| int | arch_show_interrupts (struct seq_file *p, int prec) |
| asmlinkage void | spurious_interrupt (void) |
| void __init | init_IRQ (void) |
| void __irq_entry | do_IRQ (unsigned int irq) |
Variables | |
| atomic_t | irq_err_count |
| void __irq_entry do_IRQ | ( | unsigned int | irq | ) |
The hexagon core comes with a first-level interrupt controller with 32 total possible interrupts. When the core is embedded into different systems/platforms, it is typically wrapped by macro cells that provide one or more second-level interrupt controllers that are cascaded into one or more of the first-level interrupts handled here. The precise wiring of these other irqs varies from platform to platform, and are set up & configured in the platform-specific files.
The first-level interrupt controller is wrapped by the VM, which virtualizes the interrupt controller for us. It provides a very simple, fast & efficient API, and so the fasteoi handler is appropriate for this case.
| asmlinkage void spurious_interrupt | ( | void | ) |
1.8.2