Commit-ID: d438f5fda30ec087512355e405e9c8955d8bd337
Gitweb: http://git.kernel.org/tip/d438f5fda30ec087512355e405e9c8955d8bd337
Author: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
AuthorDate: Wed, 24 Aug 2016 11:50:16 -0500
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Thu, 8 Sep 2016 08:58:40 +0200
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@xxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
Cc: Brian Gerst <brgerst@xxxxxxxxx>
Cc: Byungchul Park <byungchul.park@xxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Nilay Vaish <nilayvaish@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/9fbe0db05bacf66d337c162edbf61450d0cff1e2.1472057064.git.jpoimboe@xxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
arch/x86/kernel/dumpstack.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
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 @@ int kstack_depth_to_print = 3 * STACKSLOTS_PER_LINE;
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_stack(void *data, char *name)
*/
static int print_trace_address(void *data, unsigned long addr, int reliable)
{
- touch_nmi_watchdog();
printk_stack_address(addr, reliable, data);
return 0;
}
--
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