| irq.c (9372450cc22d185f708e5cc3557cf991be4b7dc5) | irq.c (200c880420a2c02a0899120ce52d801fad705b90) |
|---|---|
| 1/* 2 * Code to handle x86 style IRQs plus some generic interrupt stuff. 3 * 4 * Copyright (C) 1992 Linus Torvalds 5 * Copyright (C) 1994, 1995, 1996, 1997, 1998 Ralf Baechle 6 * Copyright (C) 1999 SuSE GmbH (Philipp Rumpf, prumpf@tux.org) 7 * Copyright (C) 1999-2000 Grant Grundler 8 * Copyright (c) 2005 Matthew Wilcox --- 344 unchanged lines hidden (view full) --- 353 "(sp:%lx, stk bottom-top:%lx-%lx)\n", 354 current->comm, sp, stack_start, stack_start + THREAD_SIZE); 355 356 if (sysctl_panic_on_stackoverflow) 357 panic("low stack detected by irq handler - check messages\n"); 358#endif 359} 360 | 1/* 2 * Code to handle x86 style IRQs plus some generic interrupt stuff. 3 * 4 * Copyright (C) 1992 Linus Torvalds 5 * Copyright (C) 1994, 1995, 1996, 1997, 1998 Ralf Baechle 6 * Copyright (C) 1999 SuSE GmbH (Philipp Rumpf, prumpf@tux.org) 7 * Copyright (C) 1999-2000 Grant Grundler 8 * Copyright (c) 2005 Matthew Wilcox --- 344 unchanged lines hidden (view full) --- 353 "(sp:%lx, stk bottom-top:%lx-%lx)\n", 354 current->comm, sp, stack_start, stack_start + THREAD_SIZE); 355 356 if (sysctl_panic_on_stackoverflow) 357 panic("low stack detected by irq handler - check messages\n"); 358#endif 359} 360 |
| 361#ifdef CONFIG_IRQSTACKS 362DEFINE_PER_CPU(union irq_stack_union, irq_stack_union); 363 364static void execute_on_irq_stack(void *func, unsigned long param1) 365{ 366 unsigned long *irq_stack_start; 367 unsigned long irq_stack; 368 int cpu = smp_processor_id(); 369 370 irq_stack_start = &per_cpu(irq_stack_union, cpu).stack[0]; 371 irq_stack = (unsigned long) irq_stack_start; 372 irq_stack = ALIGN(irq_stack, 16); /* align for stack frame usage */ 373 374 BUG_ON(*irq_stack_start); /* report bug if we were called recursive. */ 375 *irq_stack_start = 1; 376 377 /* This is where we switch to the IRQ stack. */ 378 call_on_stack(param1, func, irq_stack); 379 380 *irq_stack_start = 0; 381} 382#endif /* CONFIG_IRQSTACKS */ 383 |
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| 361/* ONLY called from entry.S:intr_extint() */ 362void do_cpu_irq_mask(struct pt_regs *regs) 363{ 364 struct pt_regs *old_regs; 365 unsigned long eirr_val; 366 int irq, cpu = smp_processor_id(); 367#ifdef CONFIG_SMP 368 struct irq_desc *desc; --- 19 unchanged lines hidden (view full) --- 388 printk(KERN_DEBUG "redirecting irq %d from CPU %d to %d\n", 389 irq, smp_processor_id(), cpu); 390 gsc_writel(irq + CPU_IRQ_BASE, 391 per_cpu(cpu_data, cpu).hpa); 392 goto set_out; 393 } 394#endif 395 stack_overflow_check(regs); | 384/* ONLY called from entry.S:intr_extint() */ 385void do_cpu_irq_mask(struct pt_regs *regs) 386{ 387 struct pt_regs *old_regs; 388 unsigned long eirr_val; 389 int irq, cpu = smp_processor_id(); 390#ifdef CONFIG_SMP 391 struct irq_desc *desc; --- 19 unchanged lines hidden (view full) --- 411 printk(KERN_DEBUG "redirecting irq %d from CPU %d to %d\n", 412 irq, smp_processor_id(), cpu); 413 gsc_writel(irq + CPU_IRQ_BASE, 414 per_cpu(cpu_data, cpu).hpa); 415 goto set_out; 416 } 417#endif 418 stack_overflow_check(regs); |
| 419 420#ifdef CONFIG_IRQSTACKS 421 execute_on_irq_stack(&generic_handle_irq, irq); 422#else |
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| 396 generic_handle_irq(irq); | 423 generic_handle_irq(irq); |
| 424#endif /* CONFIG_IRQSTACKS */ |
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| 397 398 out: 399 irq_exit(); 400 set_irq_regs(old_regs); 401 return; 402 403 set_out: 404 set_eiem(cpu_eiem & per_cpu(local_ack_eiem, cpu)); --- 48 unchanged lines hidden --- | 425 426 out: 427 irq_exit(); 428 set_irq_regs(old_regs); 429 return; 430 431 set_out: 432 set_eiem(cpu_eiem & per_cpu(local_ack_eiem, cpu)); --- 48 unchanged lines hidden --- |