diff options
Diffstat (limited to 'kernel/trace/trace_stack.c')
| -rw-r--r-- | kernel/trace/trace_stack.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c index 2b0d1ee3241c..eec648a0d673 100644 --- a/kernel/trace/trace_stack.c +++ b/kernel/trace/trace_stack.c @@ -286,7 +286,7 @@ __next(struct seq_file *m, loff_t *pos) { long n = *pos - 1; - if (n > stack_trace_max.nr_entries || stack_dump_trace[n] == ULONG_MAX) + if (n >= stack_trace_max.nr_entries || stack_dump_trace[n] == ULONG_MAX) return NULL; m->private = (void *)n; @@ -448,8 +448,10 @@ static char stack_trace_filter_buf[COMMAND_LINE_SIZE+1] __initdata; static __init int enable_stacktrace(char *str) { - if (strncmp(str, "_filter=", 8) == 0) - strncpy(stack_trace_filter_buf, str+8, COMMAND_LINE_SIZE); + int len; + + if ((len = str_has_prefix(str, "_filter="))) + strncpy(stack_trace_filter_buf, str + len, COMMAND_LINE_SIZE); stack_tracer_enabled = 1; last_stack_tracer_enabled = 1; |