From 606b4c992f3b28f906100f1b6eb49059909d8da7 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Sat, 15 Aug 2009 01:11:37 +0900 Subject: [PATCH] sh: stacktrace: Properly terminate the trace entry buffer. This inserts a ULONG_MAX entry at the end of the valid entries in the stack trace buffer so the default code doesn't need to scan to the end of available slots. This also makes the trace buffer termination behaviour consistent with the other architectures. Signed-off-by: Paul Mundt --- arch/sh/kernel/stacktrace.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/sh/kernel/stacktrace.c b/arch/sh/kernel/stacktrace.c index a0f497b..c2e45c4 100644 --- a/arch/sh/kernel/stacktrace.c +++ b/arch/sh/kernel/stacktrace.c @@ -62,6 +62,8 @@ void save_stack_trace(struct stack_trace *trace) unsigned long *sp = (unsigned long *)current_stack_pointer; unwind_stack(current, NULL, sp, &save_stack_ops, trace); + if (trace->nr_entries < trace->max_entries) + trace->entries[trace->nr_entries++] = ULONG_MAX; } EXPORT_SYMBOL_GPL(save_stack_trace); @@ -97,5 +99,7 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace) unsigned long *sp = (unsigned long *)tsk->thread.sp; unwind_stack(current, NULL, sp, &save_stack_ops_nosched, trace); + if (trace->nr_entries < trace->max_entries) + trace->entries[trace->nr_entries++] = ULONG_MAX; } EXPORT_SYMBOL_GPL(save_stack_trace_tsk); -- 2.7.4