From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/arch/xtensa/kernel/smp.c | 49 ++++++++++++++++++++++++++-----------------------
1 files changed, 26 insertions(+), 23 deletions(-)
diff --git a/kernel/arch/xtensa/kernel/smp.c b/kernel/arch/xtensa/kernel/smp.c
index be1f280..1254da0 100644
--- a/kernel/arch/xtensa/kernel/smp.c
+++ b/kernel/arch/xtensa/kernel/smp.c
@@ -53,16 +53,12 @@
#define IPI_IRQ 0
static irqreturn_t ipi_interrupt(int irq, void *dev_id);
-static struct irqaction ipi_irqaction = {
- .handler = ipi_interrupt,
- .flags = IRQF_PERCPU,
- .name = "ipi",
-};
void ipi_init(void)
{
unsigned irq = irq_create_mapping(NULL, IPI_IRQ);
- setup_irq(irq, &ipi_irqaction);
+ if (request_irq(irq, ipi_interrupt, IRQF_PERCPU, "ipi", NULL))
+ pr_err("Failed to request irq %u (ipi)\n", irq);
}
static inline unsigned int get_core_count(void)
@@ -126,7 +122,7 @@
init_mmu();
-#ifdef CONFIG_DEBUG_KERNEL
+#ifdef CONFIG_DEBUG_MISC
if (boot_secondary_processors == 0) {
pr_debug("%s: boot_secondary_processors:%d; Hanging cpu:%d\n",
__func__, boot_secondary_processors, cpu);
@@ -149,7 +145,6 @@
cpumask_set_cpu(cpu, mm_cpumask(mm));
enter_lazy_tlb(mm, current);
- preempt_disable();
trace_hardirqs_off();
calibrate_delay();
@@ -372,8 +367,7 @@
unsigned long mask = 0;
for_each_cpu(index, callmask)
- if (index != smp_processor_id())
- mask |= 1 << index;
+ mask |= 1 << index;
set_er(mask, MIPISET(msg_id));
}
@@ -412,22 +406,31 @@
{
unsigned int cpu = smp_processor_id();
struct ipi_data *ipi = &per_cpu(ipi_data, cpu);
- unsigned int msg;
- unsigned i;
- msg = get_er(MIPICAUSE(cpu));
- for (i = 0; i < IPI_MAX; i++)
- if (msg & (1 << i)) {
- set_er(1 << i, MIPICAUSE(cpu));
- ++ipi->ipi_count[i];
+ for (;;) {
+ unsigned int msg;
+
+ msg = get_er(MIPICAUSE(cpu));
+ set_er(msg, MIPICAUSE(cpu));
+
+ if (!msg)
+ break;
+
+ if (msg & (1 << IPI_CALL_FUNC)) {
+ ++ipi->ipi_count[IPI_CALL_FUNC];
+ generic_smp_call_function_interrupt();
}
- if (msg & (1 << IPI_RESCHEDULE))
- scheduler_ipi();
- if (msg & (1 << IPI_CALL_FUNC))
- generic_smp_call_function_interrupt();
- if (msg & (1 << IPI_CPU_STOP))
- ipi_cpu_stop(cpu);
+ if (msg & (1 << IPI_RESCHEDULE)) {
+ ++ipi->ipi_count[IPI_RESCHEDULE];
+ scheduler_ipi();
+ }
+
+ if (msg & (1 << IPI_CPU_STOP)) {
+ ++ipi->ipi_count[IPI_CPU_STOP];
+ ipi_cpu_stop(cpu);
+ }
+ }
return IRQ_HANDLED;
}
--
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