From ab34b46d1a74e98996e67a7da7e5d683ecfd9f57 Mon Sep 17 00:00:00 2001
From: Dmitry Safonov <dima@arista.com>
Date: Mon, 8 Jun 2020 21:32:10 -0700
Subject: [PATCH] sysrq: use show_stack_loglvl()
Show the stack trace on a CPU with the same log level as "CPU%d" header.
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.com>
Link: http://lkml.kernel.org/r/20200418201944.482088-45-dima@arista.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
drivers/tty/sysrq.c | 2 +-
include/linux/sched/debug.h | 2 ++
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
index 477cdc1e9cf31..7bd935379dece 100644
--- a/drivers/tty/sysrq.c
+++ b/drivers/tty/sysrq.c
@@ -235,7 +235,7 @@ static void showacpu(void *dummy)
raw_spin_lock_irqsave(&show_lock, flags);
pr_info("CPU%d:\n", smp_processor_id());
- show_stack(NULL, NULL);
+ show_stack_loglvl(NULL, NULL, KERN_INFO);
raw_spin_unlock_irqrestore(&show_lock, flags);
}
diff --git a/include/linux/sched/debug.h b/include/linux/sched/debug.h
index 95fb9e025247e..373e4e3faf2ad 100644
--- a/include/linux/sched/debug.h
+++ b/include/linux/sched/debug.h
@@ -31,6 +31,8 @@ extern void show_regs(struct pt_regs *);
* trace (or NULL if the entire call-chain of the task should be shown).
*/
extern void show_stack(struct task_struct *task, unsigned long *sp);
+extern void show_stack_loglvl(struct task_struct *task, unsigned long *sp,
+ const char *loglvl);
extern void sched_show_task(struct task_struct *p);
--
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