x86/dumpstack: Make printk_stack_address() more generally useful
Change printk_stack_address() to be useful when called by an unwinder
outside the context of dump_trace().
Specifically:
- printk_stack_address()'s 'data' argument is always used as the log
level string. Make that explicit.
- Call touch_nmi_watchdog().
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Byungchul Park <byungchul.park@lge.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Nilay Vaish <nilayvaish@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/9fbe0db05bacf66d337c162edbf61450d0cff1e2.1472057064.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c
index 01072e9..f0ddf85 100644
--- a/arch/x86/kernel/dumpstack.c
+++ b/arch/x86/kernel/dumpstack.c
@@ -26,10 +26,11 @@
static int die_counter;
static void printk_stack_address(unsigned long address, int reliable,
- void *data)
+ char *log_lvl)
{
+ touch_nmi_watchdog();
printk("%s [<%p>] %s%pB\n",
- (char *)data, (void *)address, reliable ? "" : "? ",
+ log_lvl, (void *)address, reliable ? "" : "? ",
(void *)address);
}
@@ -148,7 +149,6 @@
*/
static int print_trace_address(void *data, unsigned long addr, int reliable)
{
- touch_nmi_watchdog();
printk_stack_address(addr, reliable, data);
return 0;
}