--- zzzz-none-000/linux-3.10.107/drivers/tty/sysrq.c	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/drivers/tty/sysrq.c	2021-11-10 11:53:55.000000000 +0000
@@ -44,6 +44,9 @@
 #include <linux/uaccess.h>
 #include <linux/moduleparam.h>
 #include <linux/jiffies.h>
+#if defined(CONFIG_AVM_IPI_YIELD)
+#include <asm/yield_context.h>
+#endif/*--- #if defined(CONFIG_AVM_IPI_YIELD) ---*/
 
 #include <asm/ptrace.h>
 #include <asm/irq_regs.h>
@@ -254,13 +257,31 @@
 	.enable_mask	= SYSRQ_ENABLE_DUMP,
 };
 #endif
+#if defined(CONFIG_AVM_IPI_YIELD)
+static void per_cpu_sysrq_handle_showregs(void *dummy __maybe_unused) {
+	struct pt_regs *regs = get_irq_regs();
+	if (regs)
+		show_regs(regs);
+	perf_event_print_debug();
+}
+#endif/*--- #if defined(CONFIG_AVM_IPI_YIELD) ---*/
 
-static void sysrq_handle_showregs(int key)
-{
+static void sysrq_handle_showregs(int key) {
 	struct pt_regs *regs = get_irq_regs();
 	if (regs)
 		show_regs(regs);
 	perf_event_print_debug();
+
+#if defined(CONFIG_AVM_IPI_YIELD)
+    {
+        int cpu;
+        for_each_online_cpu(cpu) {
+            if(cpu != smp_processor_id()) {
+                yield_call(cpu, per_cpu_sysrq_handle_showregs, NULL);
+            }
+        }
+    }
+#endif/*--- #if defined(CONFIG_AVM_IPI_YIELD) ---*/
 }
 static struct sysrq_key_op sysrq_showregs_op = {
 	.handler	= sysrq_handle_showregs,