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tracing: cleanup for tracing_trace_options_read()

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'\n' is already appended, and what we need is just an extra
space for the '\0'.

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
LKML-Reference: <4A3EED63.3090908@cn.fujitsu.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Xiao Guangrong 2009-06-22 10:33:07 +08:00 committed by Steven Rostedt
parent 7d536cb3fb
commit ff4e9da233
1 changed files with 3 additions and 3 deletions
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6
kernel/trace/trace.c
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@ -2256,8 +2256,8 @@ tracing_trace_options_read(struct file *filp, char __user *ubuf,
len += 3; /* "no" and newline */
}
/* +2 for \n and \0 */
buf = kmalloc(len + 2, GFP_KERNEL);
/* +1 for \0 */
buf = kmalloc(len + 1, GFP_KERNEL);
if (!buf) {
mutex_unlock(&trace_types_lock);
return -ENOMEM;
@ -2280,7 +2280,7 @@ tracing_trace_options_read(struct file *filp, char __user *ubuf,
}
mutex_unlock(&trace_types_lock);
WARN_ON(r >= len + 2);
WARN_ON(r >= len + 1);
r = simple_read_from_buffer(ubuf, cnt, ppos, buf, r);