1 files changed, 0 insertions, 201 deletions
diff --git a/ANDROID_3.4.5/arch/x86/kernel/irq_32.c b/ANDROID_3.4.5/arch/x86/kernel/irq_32.c
deleted file mode 100644
index 58b7f27c..00000000
--- a/ANDROID_3.4.5/arch/x86/kernel/irq_32.c
+++ /dev/null
@@ -1,201 +0,0 @@
-/*
- *	Copyright (C) 1992, 1998 Linus Torvalds, Ingo Molnar
- *
- * This file contains the lowest level x86-specific interrupt
- * entry, irq-stacks and irq statistics code. All the remaining
- * irq logic is done by the generic kernel/irq/ code and
- * by the x86-specific irq controller code. (e.g. i8259.c and
- * io_apic.c.)
- */
-
-#include <linux/module.h>
-#include <linux/seq_file.h>
-#include <linux/interrupt.h>
-#include <linux/kernel_stat.h>
-#include <linux/notifier.h>
-#include <linux/cpu.h>
-#include <linux/delay.h>
-#include <linux/uaccess.h>
-#include <linux/percpu.h>
-#include <linux/mm.h>
-
-#include <asm/apic.h>
-
-DEFINE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat);
-EXPORT_PER_CPU_SYMBOL(irq_stat);
-
-DEFINE_PER_CPU(struct pt_regs *, irq_regs);
-EXPORT_PER_CPU_SYMBOL(irq_regs);
-
-#ifdef CONFIG_DEBUG_STACKOVERFLOW
-
-int sysctl_panic_on_stackoverflow __read_mostly;
-
-/* Debugging check for stack overflow: is there less than 1KB free? */
-static int check_stack_overflow(void)
-{
-	long sp;
-
-	__asm__ __volatile__("andl %%esp,%0" :
-			     "=r" (sp) : "0" (THREAD_SIZE - 1));
-
-	return sp < (sizeof(struct thread_info) + STACK_WARN);
-}
-
-static void print_stack_overflow(void)
-{
-	printk(KERN_WARNING "low stack detected by irq handler\n");
-	dump_stack();
-	if (sysctl_panic_on_stackoverflow)
-		panic("low stack detected by irq handler - check messages\n");
-}
-
-#else
-static inline int check_stack_overflow(void) { return 0; }
-static inline void print_stack_overflow(void) { }
-#endif
-
-/*
- * per-CPU IRQ handling contexts (thread information and stack)
- */
-union irq_ctx {
-	struct thread_info      tinfo;
-	u32                     stack[THREAD_SIZE/sizeof(u32)];
-} __attribute__((aligned(THREAD_SIZE)));
-
-static DEFINE_PER_CPU(union irq_ctx *, hardirq_ctx);
-static DEFINE_PER_CPU(union irq_ctx *, softirq_ctx);
-
-static void call_on_stack(void *func, void *stack)
-{
-	asm volatile("xchgl	%%ebx,%%esp	\n"
-		     "call	*%%edi		\n"
-		     "movl	%%ebx,%%esp	\n"
-		     : "=b" (stack)
-		     : "0" (stack),
-		       "D"(func)
-		     : "memory", "cc", "edx", "ecx", "eax");
-}
-
-static inline int
-execute_on_irq_stack(int overflow, struct irq_desc *desc, int irq)
-{
-	union irq_ctx *curctx, *irqctx;
-	u32 *isp, arg1, arg2;
-
-	curctx = (union irq_ctx *) current_thread_info();
-	irqctx = __this_cpu_read(hardirq_ctx);
-
-	/*
-	 * this is where we switch to the IRQ stack. However, if we are
-	 * already using the IRQ stack (because we interrupted a hardirq
-	 * handler) we can't do that and just have to keep using the
-	 * current stack (which is the irq stack already after all)
-	 */
-	if (unlikely(curctx == irqctx))
-		return 0;
-
-	/* build the stack frame on the IRQ stack */
-	isp = (u32 *) ((char *)irqctx + sizeof(*irqctx));
-	irqctx->tinfo.task = curctx->tinfo.task;
-	irqctx->tinfo.previous_esp = current_stack_pointer;
-
-	/* Copy the preempt_count so that the [soft]irq checks work. */
-	irqctx->tinfo.preempt_count = curctx->tinfo.preempt_count;
-
-	if (unlikely(overflow))
-		call_on_stack(print_stack_overflow, isp);
-
-	asm volatile("xchgl	%%ebx,%%esp	\n"
-		     "call	*%%edi		\n"
-		     "movl	%%ebx,%%esp	\n"
-		     : "=a" (arg1), "=d" (arg2), "=b" (isp)
-		     :  "0" (irq),   "1" (desc),  "2" (isp),
-			"D" (desc->handle_irq)
-		     : "memory", "cc", "ecx");
-	return 1;
-}
-
-/*
- * allocate per-cpu stacks for hardirq and for softirq processing
- */
-void __cpuinit irq_ctx_init(int cpu)
-{
-	union irq_ctx *irqctx;
-
-	if (per_cpu(hardirq_ctx, cpu))
-		return;
-
-	irqctx = page_address(alloc_pages_node(cpu_to_node(cpu),
-					       THREAD_FLAGS,
-					       THREAD_ORDER));
-	memset(&irqctx->tinfo, 0, sizeof(struct thread_info));
-	irqctx->tinfo.cpu		= cpu;
-	irqctx->tinfo.preempt_count	= HARDIRQ_OFFSET;
-	irqctx->tinfo.addr_limit	= MAKE_MM_SEG(0);
-
-	per_cpu(hardirq_ctx, cpu) = irqctx;
-
-	irqctx = page_address(alloc_pages_node(cpu_to_node(cpu),
-					       THREAD_FLAGS,
-					       THREAD_ORDER));
-	memset(&irqctx->tinfo, 0, sizeof(struct thread_info));
-	irqctx->tinfo.cpu		= cpu;
-	irqctx->tinfo.addr_limit	= MAKE_MM_SEG(0);
-
-	per_cpu(softirq_ctx, cpu) = irqctx;
-
-	printk(KERN_DEBUG "CPU %u irqstacks, hard=%p soft=%p\n",
-	       cpu, per_cpu(hardirq_ctx, cpu),  per_cpu(softirq_ctx, cpu));
-}
-
-asmlinkage void do_softirq(void)
-{
-	unsigned long flags;
-	struct thread_info *curctx;
-	union irq_ctx *irqctx;
-	u32 *isp;
-
-	if (in_interrupt())
-		return;
-
-	local_irq_save(flags);
-
-	if (local_softirq_pending()) {
-		curctx = current_thread_info();
-		irqctx = __this_cpu_read(softirq_ctx);
-		irqctx->tinfo.task = curctx->task;
-		irqctx->tinfo.previous_esp = current_stack_pointer;
-
-		/* build the stack frame on the softirq stack */
-		isp = (u32 *) ((char *)irqctx + sizeof(*irqctx));
-
-		call_on_stack(__do_softirq, isp);
-		/*
-		 * Shouldn't happen, we returned above if in_interrupt():
-		 */
-		WARN_ON_ONCE(softirq_count());
-	}
-
-	local_irq_restore(flags);
-}
-
-bool handle_irq(unsigned irq, struct pt_regs *regs)
-{
-	struct irq_desc *desc;
-	int overflow;
-
-	overflow = check_stack_overflow();
-
-	desc = irq_to_desc(irq);
-	if (unlikely(!desc))
-		return false;
-
-	if (user_mode_vm(regs) || !execute_on_irq_stack(overflow, desc, irq)) {
-		if (unlikely(overflow))
-			print_stack_overflow();
-		desc->handle_irq(irq, desc);
-	}
-
-	return true;
-}