show_stack_lvl() works like show_stack() but allows also passing the log level.
The default implementation that should be overrided by architecture specific
code simply will call the existing show_stack().
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Greg Thelen <gthelen@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Signed-off-by: Aristeu Rozanski <aris@xxxxxxxxxx>
---
include/linux/sched.h | 2 ++
lib/dump_stack.c | 8 +++++++-
2 files changed, 9 insertions(+), 1 deletion(-)
--- linux-2.6.orig/lib/dump_stack.c 2015-11-05 14:31:44.581921915 -0500
+++ linux-2.6/lib/dump_stack.c 2015-11-05 14:32:47.508211219 -0500
@@ -9,10 +9,16 @@
#include <linux/smp.h>
#include <linux/atomic.h>
+void __weak show_stack_lvl(struct task_struct *task, unsigned long *sp,
+ char *log_lvl)
+{
+ return show_stack(task, sp);
+}
+
static void __dump_stack(char *log_lvl)
{
dump_stack_print_info(log_lvl);
- show_stack(NULL, NULL);
+ show_stack_lvl(NULL, NULL, log_lvl);
}
/**
--- linux-2.6.orig/include/linux/sched.h 2015-11-05 14:31:44.581921915 -0500
+++ linux-2.6/include/linux/sched.h 2015-11-05 14:31:52.426833314 -0500
@@ -368,6 +368,8 @@ 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_lvl(struct task_struct *task, unsigned long *sp,
+ char *log_lvl);
extern void cpu_init (void);
extern void trap_init(void);
--
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