^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * linux/arch/sh/kernel/irq.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 1992, 1998 Linus Torvalds, Ingo Molnar
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * SuperH version: Copyright (C) 1999 Niibe Yutaka
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/kernel_stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/ftrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/ratelimit.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <asm/processor.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <asm/machvec.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <asm/thread_info.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <cpu/mmu_context.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) atomic_t irq_err_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * 'what should we do if we get a hw irq event on an illegal vector'.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * each architecture has to answer this themselves, it doesn't deserve
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * a generic callback i think.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) void ack_bad_irq(unsigned int irq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) atomic_inc(&irq_err_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) printk("unexpected IRQ trap at vector %02x\n", irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #if defined(CONFIG_PROC_FS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * /proc/interrupts printing for arch specific interrupts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) int arch_show_interrupts(struct seq_file *p, int prec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) int j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) seq_printf(p, "%*s: ", prec, "NMI");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) for_each_online_cpu(j)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) seq_printf(p, "%10u ", nmi_count(j));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) seq_printf(p, " Non-maskable interrupts\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #ifdef CONFIG_IRQSTACKS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * per-CPU IRQ handling contexts (thread information and stack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) union irq_ctx {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct thread_info tinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) u32 stack[THREAD_SIZE/sizeof(u32)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static union irq_ctx *hardirq_ctx[NR_CPUS] __read_mostly;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static union irq_ctx *softirq_ctx[NR_CPUS] __read_mostly;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static char softirq_stack[NR_CPUS * THREAD_SIZE] __page_aligned_bss;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static char hardirq_stack[NR_CPUS * THREAD_SIZE] __page_aligned_bss;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) static inline void handle_one_irq(unsigned int irq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) union irq_ctx *curctx, *irqctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) curctx = (union irq_ctx *)current_thread_info();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) irqctx = hardirq_ctx[smp_processor_id()];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * this is where we switch to the IRQ stack. However, if we are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * already using the IRQ stack (because we interrupted a hardirq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * handler) we can't do that and just have to keep using the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * current stack (which is the irq stack already after all)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) if (curctx != irqctx) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) u32 *isp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) isp = (u32 *)((char *)irqctx + sizeof(*irqctx));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) irqctx->tinfo.task = curctx->tinfo.task;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) irqctx->tinfo.previous_sp = current_stack_pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * Copy the softirq bits in preempt_count so that the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) * softirq checks work in the hardirq context.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) irqctx->tinfo.preempt_count =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) (irqctx->tinfo.preempt_count & ~SOFTIRQ_MASK) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) (curctx->tinfo.preempt_count & SOFTIRQ_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) __asm__ __volatile__ (
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) "mov %0, r4 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) "mov r15, r8 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) "jsr @%1 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) /* switch to the irq stack */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) " mov %2, r15 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) /* restore the stack (ring zero) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) "mov r8, r15 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) : /* no outputs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) : "r" (irq), "r" (generic_handle_irq), "r" (isp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) : "memory", "r0", "r1", "r2", "r3", "r4",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) "r5", "r6", "r7", "r8", "t", "pr"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) generic_handle_irq(irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) * allocate per-cpu stacks for hardirq and for softirq processing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) void irq_ctx_init(int cpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) union irq_ctx *irqctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (hardirq_ctx[cpu])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) irqctx = (union irq_ctx *)&hardirq_stack[cpu * THREAD_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) irqctx->tinfo.task = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) irqctx->tinfo.cpu = cpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) irqctx->tinfo.preempt_count = HARDIRQ_OFFSET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) irqctx->tinfo.addr_limit = MAKE_MM_SEG(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) hardirq_ctx[cpu] = irqctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) irqctx = (union irq_ctx *)&softirq_stack[cpu * THREAD_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) irqctx->tinfo.task = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) irqctx->tinfo.cpu = cpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) irqctx->tinfo.preempt_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) irqctx->tinfo.addr_limit = MAKE_MM_SEG(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) softirq_ctx[cpu] = irqctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) printk("CPU %u irqstacks, hard=%p soft=%p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) cpu, hardirq_ctx[cpu], softirq_ctx[cpu]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) void irq_ctx_exit(int cpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) hardirq_ctx[cpu] = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) void do_softirq_own_stack(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) struct thread_info *curctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) union irq_ctx *irqctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) u32 *isp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) curctx = current_thread_info();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) irqctx = softirq_ctx[smp_processor_id()];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) irqctx->tinfo.task = curctx->task;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) irqctx->tinfo.previous_sp = current_stack_pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) /* build the stack frame on the softirq stack */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) isp = (u32 *)((char *)irqctx + sizeof(*irqctx));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) __asm__ __volatile__ (
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) "mov r15, r9 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) "jsr @%0 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) /* switch to the softirq stack */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) " mov %1, r15 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) /* restore the thread stack */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) "mov r9, r15 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) : /* no outputs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) : "r" (__do_softirq), "r" (isp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) : "memory", "r0", "r1", "r2", "r3", "r4",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) "r5", "r6", "r7", "r8", "r9", "r15", "t", "pr"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) static inline void handle_one_irq(unsigned int irq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) generic_handle_irq(irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) asmlinkage __irq_entry int do_IRQ(unsigned int irq, struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) struct pt_regs *old_regs = set_irq_regs(regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) irq_enter();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) irq = irq_demux(irq_lookup(irq));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) if (irq != NO_IRQ_IGNORE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) handle_one_irq(irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) irq_finish(irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) irq_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) set_irq_regs(old_regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) void __init init_IRQ(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) plat_irq_setup();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) /* Perform the machine specific initialisation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) if (sh_mv.mv_init_irq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) sh_mv.mv_init_irq();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) intc_finalize();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) irq_ctx_init(smp_processor_id());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) #ifdef CONFIG_HOTPLUG_CPU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) * The CPU has been marked offline. Migrate IRQs off this CPU. If
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) * the affinity settings do not allow other CPUs, force them onto any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) * available CPU.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) void migrate_irqs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) unsigned int irq, cpu = smp_processor_id();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) for_each_active_irq(irq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) struct irq_data *data = irq_get_irq_data(irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) if (irq_data_get_node(data) == cpu) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) struct cpumask *mask = irq_data_get_affinity_mask(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) unsigned int newcpu = cpumask_any_and(mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) cpu_online_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) if (newcpu >= nr_cpu_ids) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) pr_info_ratelimited("IRQ%u no longer affine to CPU%u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) irq, cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) cpumask_setall(mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) irq_set_affinity(irq, mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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