From 04dd17822334871b23ea2862f7798fb0e0007777 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 11 May 2024 08:53:19 +0000
Subject: [PATCH] change otg to host mode
---
kernel/arch/microblaze/kernel/unwind.c | 40 ++++++++++++++++++++++++----------------
1 files changed, 24 insertions(+), 16 deletions(-)
diff --git a/kernel/arch/microblaze/kernel/unwind.c b/kernel/arch/microblaze/kernel/unwind.c
index 34c270c..778a761 100644
--- a/kernel/arch/microblaze/kernel/unwind.c
+++ b/kernel/arch/microblaze/kernel/unwind.c
@@ -154,7 +154,8 @@
static void microblaze_unwind_inner(struct task_struct *task,
unsigned long pc, unsigned long fp,
unsigned long leaf_return,
- struct stack_trace *trace);
+ struct stack_trace *trace,
+ const char *loglvl);
/**
* unwind_trap - Unwind through a system trap, that stored previous state
@@ -162,16 +163,18 @@
*/
#ifdef CONFIG_MMU
static inline void unwind_trap(struct task_struct *task, unsigned long pc,
- unsigned long fp, struct stack_trace *trace)
+ unsigned long fp, struct stack_trace *trace,
+ const char *loglvl)
{
/* To be implemented */
}
#else
static inline void unwind_trap(struct task_struct *task, unsigned long pc,
- unsigned long fp, struct stack_trace *trace)
+ unsigned long fp, struct stack_trace *trace,
+ const char *loglvl)
{
const struct pt_regs *regs = (const struct pt_regs *) fp;
- microblaze_unwind_inner(task, regs->pc, regs->r1, regs->r15, trace);
+ microblaze_unwind_inner(task, regs->pc, regs->r1, regs->r15, trace, loglvl);
}
#endif
@@ -184,11 +187,13 @@
* the caller's return address.
* @trace : Where to store stack backtrace (PC values).
* NULL == print backtrace to kernel log
+ * @loglvl : Used for printk log level if (trace == NULL).
*/
static void microblaze_unwind_inner(struct task_struct *task,
unsigned long pc, unsigned long fp,
unsigned long leaf_return,
- struct stack_trace *trace)
+ struct stack_trace *trace,
+ const char *loglvl)
{
int ofs = 0;
@@ -214,11 +219,11 @@
const struct pt_regs *regs =
(const struct pt_regs *) fp;
#endif
- pr_info("HW EXCEPTION\n");
+ printk("%sHW EXCEPTION\n", loglvl);
#ifndef CONFIG_MMU
microblaze_unwind_inner(task, regs->r17 - 4,
fp + EX_HANDLER_STACK_SIZ,
- regs->r15, trace);
+ regs->r15, trace, loglvl);
#endif
return;
}
@@ -228,8 +233,8 @@
if ((return_to >= handler->start_addr)
&& (return_to <= handler->end_addr)) {
if (!trace)
- pr_info("%s\n", handler->trap_name);
- unwind_trap(task, pc, fp, trace);
+ printk("%s%s\n", loglvl, handler->trap_name);
+ unwind_trap(task, pc, fp, trace, loglvl);
return;
}
}
@@ -248,13 +253,13 @@
} else {
/* Have we reached userland? */
if (unlikely(pc == task_pt_regs(task)->pc)) {
- pr_info("[<%p>] PID %lu [%s]\n",
- (void *) pc,
+ printk("%s[<%p>] PID %lu [%s]\n",
+ loglvl, (void *) pc,
(unsigned long) task->pid,
task->comm);
break;
} else
- print_ip_sym(pc);
+ print_ip_sym(loglvl, pc);
}
/* Stop when we reach anything not part of the kernel */
@@ -282,14 +287,16 @@
* @task : Task whose stack we are to unwind (NULL == current)
* @trace : Where to store stack backtrace (PC values).
* NULL == print backtrace to kernel log
+ * @loglvl : Used for printk log level if (trace == NULL).
*/
-void microblaze_unwind(struct task_struct *task, struct stack_trace *trace)
+void microblaze_unwind(struct task_struct *task, struct stack_trace *trace,
+ const char *loglvl)
{
if (task) {
if (task == current) {
const struct pt_regs *regs = task_pt_regs(task);
microblaze_unwind_inner(task, regs->pc, regs->r1,
- regs->r15, trace);
+ regs->r15, trace, loglvl);
} else {
struct thread_info *thread_info =
(struct thread_info *)(task->stack);
@@ -299,7 +306,8 @@
microblaze_unwind_inner(task,
(unsigned long) &_switch_to,
cpu_context->r1,
- cpu_context->r15, trace);
+ cpu_context->r15,
+ trace, loglvl);
}
} else {
unsigned long pc, fp;
@@ -314,7 +322,7 @@
);
/* Since we are not a leaf function, use leaf_return = 0 */
- microblaze_unwind_inner(current, pc, fp, 0, trace);
+ microblaze_unwind_inner(current, pc, fp, 0, trace, loglvl);
}
}
--
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