[PATCH 2/5] dump_stack: introduce dump_stack_lvl

[aris@redhat.com]

[-- Attachment #1: introduce_dump_stack_lvl.patch --]
[-- Type: text/plain, Size: 1736 bytes --]

dump_stack_lvl() allows passing the log level down to the architecture specific
code.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Greg Thelen <gthelen@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Aristeu Rozanski <aris@redhat.com>

---
 include/linux/printk.h |    1 +
 lib/dump_stack.c       |   11 +++++++++++
 2 files changed, 12 insertions(+)

--- linux-2.6.orig/lib/dump_stack.c	2015-11-05 10:56:52.529526114 -0500
+++ linux-2.6/lib/dump_stack.c	2015-11-05 13:16:15.057078858 -0500
@@ -55,6 +55,11 @@ was_locked = 0;
 	preempt_enable();
 }
 
+asmlinkage __visible void dump_stack_lvl(char *log_lvl)
+{
+	_dump_stack(log_lvl);
+}
+
 asmlinkage __visible void dump_stack(void)
 {
 	_dump_stack(KERN_DEFAULT);
@@ -65,5 +70,11 @@ asmlinkage __visible void dump_stack(voi
 {
 	__dump_stack(KERN_DEFAULT);
 }
+
+asmlinkage __visible void dump_stack_lvl(char *log_lvl)
+{
+	__dump_stack(log_lvl);
+}
 #endif
 EXPORT_SYMBOL(dump_stack);
+EXPORT_SYMBOL(dump_stack_lvl);
--- linux-2.6.orig/include/linux/printk.h	2015-11-05 10:56:13.163970713 -0500
+++ linux-2.6/include/linux/printk.h	2015-11-05 13:16:15.057078858 -0500
@@ -231,6 +231,7 @@ static inline void show_regs_print_info(
 #endif
 
 extern asmlinkage void dump_stack(void) __cold;
+extern asmlinkage void dump_stack_lvl(char *log_lvl);
 
 #ifndef pr_fmt
 #define pr_fmt(fmt) fmt

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