mirror of
https://github.com/torvalds/linux.git
synced 2024-11-19 02:21:47 +00:00
78ae2e1cd8
It appears arm64 copied arm's GENERIC_IRQ_MULTI_HANDLER code, but made it unconditional. Converts the arm64 code to use the new generic code, which simply consists of deleting the arm64 code and setting MULTI_IRQ_HANDLER instead. Signed-off-by: Palmer Dabbelt <palmer@sifive.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: linux@armlinux.org.uk Cc: catalin.marinas@arm.com Cc: Will Deacon <will.deacon@arm.com> Cc: jonas@southpole.se Cc: stefan.kristiansson@saunalahti.fi Cc: shorne@gmail.com Cc: jason@lakedaemon.net Cc: marc.zyngier@arm.com Cc: Arnd Bergmann <arnd@arndb.de> Cc: nicolas.pitre@linaro.org Cc: vladimir.murzin@arm.com Cc: keescook@chromium.org Cc: jinb.park7@gmail.com Cc: yamada.masahiro@socionext.com Cc: alexandre.belloni@bootlin.com Cc: pombredanne@nexb.com Cc: Greg KH <gregkh@linuxfoundation.org> Cc: kstewart@linuxfoundation.org Cc: jhogan@kernel.org Cc: mark.rutland@arm.com Cc: ard.biesheuvel@linaro.org Cc: james.morse@arm.com Cc: linux-arm-kernel@lists.infradead.org Cc: openrisc@lists.librecores.org Link: https://lkml.kernel.org/r/20180622170126.6308-4-palmer@sifive.com
76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
/*
|
|
* Based on arch/arm/kernel/irq.c
|
|
*
|
|
* Copyright (C) 1992 Linus Torvalds
|
|
* Modifications for ARM processor Copyright (C) 1995-2000 Russell King.
|
|
* Support for Dynamic Tick Timer Copyright (C) 2004-2005 Nokia Corporation.
|
|
* Dynamic Tick Timer written by Tony Lindgren <tony@atomide.com> and
|
|
* Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>.
|
|
* Copyright (C) 2012 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.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <linux/kernel_stat.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/memory.h>
|
|
#include <linux/smp.h>
|
|
#include <linux/init.h>
|
|
#include <linux/irqchip.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/vmalloc.h>
|
|
#include <asm/vmap_stack.h>
|
|
|
|
unsigned long irq_err_count;
|
|
|
|
DEFINE_PER_CPU(unsigned long *, irq_stack_ptr);
|
|
|
|
int arch_show_interrupts(struct seq_file *p, int prec)
|
|
{
|
|
show_ipi_list(p, prec);
|
|
seq_printf(p, "%*s: %10lu\n", prec, "Err", irq_err_count);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_VMAP_STACK
|
|
static void init_irq_stacks(void)
|
|
{
|
|
int cpu;
|
|
unsigned long *p;
|
|
|
|
for_each_possible_cpu(cpu) {
|
|
p = arch_alloc_vmap_stack(IRQ_STACK_SIZE, cpu_to_node(cpu));
|
|
per_cpu(irq_stack_ptr, cpu) = p;
|
|
}
|
|
}
|
|
#else
|
|
/* irq stack only needs to be 16 byte aligned - not IRQ_STACK_SIZE aligned. */
|
|
DEFINE_PER_CPU_ALIGNED(unsigned long [IRQ_STACK_SIZE/sizeof(long)], irq_stack);
|
|
|
|
static void init_irq_stacks(void)
|
|
{
|
|
int cpu;
|
|
|
|
for_each_possible_cpu(cpu)
|
|
per_cpu(irq_stack_ptr, cpu) = per_cpu(irq_stack, cpu);
|
|
}
|
|
#endif
|
|
|
|
void __init init_IRQ(void)
|
|
{
|
|
init_irq_stacks();
|
|
irqchip_init();
|
|
if (!handle_arch_irq)
|
|
panic("No interrupt controller found.");
|
|
}
|