ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/arch/um/kernel/sysrq.c b/marvell/linux/arch/um/kernel/sysrq.c
new file mode 100644
index 0000000..c4667a9
--- /dev/null
+++ b/marvell/linux/arch/um/kernel/sysrq.c
@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ * Copyright (C) 2013 Richard Weinberger <richrd@nod.at>
+ */
+
+#include <linux/kallsyms.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/sched/debug.h>
+#include <linux/sched/task_stack.h>
+
+#include <asm/sysrq.h>
+#include <asm/stacktrace.h>
+#include <os.h>
+
+static void _print_addr(void *data, unsigned long address, int reliable)
+{
+ const char *loglvl = data;
+
+ printk("%s [<%08lx>] %s%pS\n", loglvl, address, reliable ? "" : "? ",
+ (void *)address);
+}
+
+static const struct stacktrace_ops stackops = {
+ .address = _print_addr
+};
+
+void show_stack_loglvl(struct task_struct *task, unsigned long *stack,
+ const char *loglvl)
+{
+ struct pt_regs *segv_regs = current->thread.segv_regs;
+ int i;
+
+ if (!segv_regs && os_is_signal_stack()) {
+ pr_err("Received SIGSEGV in SIGSEGV handler,"
+ " aborting stack trace!\n");
+ return;
+ }
+
+ if (!stack)
+ stack = get_stack_pointer(task, segv_regs);
+
+ printk("%sStack:\n", loglvl);
+ for (i = 0; i < 3 * STACKSLOTS_PER_LINE; i++) {
+ if (kstack_end(stack))
+ break;
+ if (i && ((i % STACKSLOTS_PER_LINE) == 0))
+ pr_cont("\n");
+ pr_cont(" %08lx", *stack++);
+ }
+
+ printk("%sCall Trace:\n", loglvl);
+ dump_trace(task ?: current, &stackops, (void *)loglvl);
+}
+
+void show_stack(struct task_struct *task, unsigned long *stack)
+{
+ show_stack_loglvl(task, stack, KERN_INFO);
+}