mirror of
https://github.com/torvalds/linux.git
synced 2024-12-24 11:51:27 +00:00
97dcb82de6
The irq_base for {mips,rm7k,rm9k}_cpu_irq_init() are constant on all
platforms and are same value on most platforms (0 or 16, depends on
CONFIG_I8259). Define them in asm-mips/mach-generic/irq.h and make
them customizable. This will save a few cycle on each CPU interrupt.
A good side effect is removing some dependencies to MALTA in generic
SMTC code.
Although MIPS_CPU_IRQ_BASE is customizable, this patch changes irq
mappings on DDB5477, EMMA2RH and MIPS_SIM, since really customizing
them might cause some header dependency problem and there seems no
good reason to customize it. So currently only VR41XX is using custom
MIPS_CPU_IRQ_BASE value, which is 0 regardless of CONFIG_I8259.
Testing this patch on those platforms is greatly appreciated. Thank
you.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
21 lines
561 B
C
21 lines
561 B
C
/*
|
|
* include/asm-mips/irq_cpu.h
|
|
*
|
|
* MIPS CPU interrupt definitions.
|
|
*
|
|
* Copyright (C) 2002 Maciej W. Rozycki
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
#ifndef _ASM_IRQ_CPU_H
|
|
#define _ASM_IRQ_CPU_H
|
|
|
|
extern void mips_cpu_irq_init(void);
|
|
extern void rm7k_cpu_irq_init(void);
|
|
extern void rm9k_cpu_irq_init(void);
|
|
|
|
#endif /* _ASM_IRQ_CPU_H */
|