sh: stacktrace: Properly terminate the trace entry buffer.

Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

kernel os linux

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 <lethal@linux-sh.org>

Paul Mundt 16 years ago 606b4c99 f9967e23

1 changed file

expand all

arch

kernel

stacktrace.c

arch/sh/kernel/stacktrace.c

··· 62 62 unsigned long *sp = (unsigned long *)current_stack_pointer; 63 63 64 64 unwind_stack(current, NULL, sp, &save_stack_ops, trace); 65 + if (trace->nr_entries < trace->max_entries) 66 + trace->entries[trace->nr_entries++] = ULONG_MAX; 65 67 } 66 68 EXPORT_SYMBOL_GPL(save_stack_trace); 67 69 ··· 99 97 unsigned long *sp = (unsigned long *)tsk->thread.sp; 100 98 101 99 unwind_stack(current, NULL, sp, &save_stack_ops_nosched, trace); 100 + if (trace->nr_entries < trace->max_entries) 101 + trace->entries[trace->nr_entries++] = ULONG_MAX; 102 102 } 103 103 EXPORT_SYMBOL_GPL(save_stack_trace_tsk);