diff options
| author | Peter Huewe <peterhuewe@gmx.de> | 2011-06-07 21:58:27 +0200 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2011-06-15 04:48:50 +0200 |
| commit | 22fe9b54d859e53bfbbbdc1a0a77a82bc453927c (patch) | |
| tree | 4aec2d069decbe0786ad5474908f5bbe49732ad4 /kernel/trace/ring_buffer.c | |
| parent | tracing, function_graph: Add context-info support for function_graph tracer (diff) | |
| download | linux-22fe9b54d859e53bfbbbdc1a0a77a82bc453927c.tar.xz linux-22fe9b54d859e53bfbbbdc1a0a77a82bc453927c.zip | |
tracing: Convert to kstrtoul_from_user
This patch replaces the code for getting an unsigned long from a
userspace buffer by a simple call to kstroul_from_user.
This makes it easier to read and less error prone.
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Link: http://lkml.kernel.org/r/1307476707-14762-1-git-send-email-peterhuewe@gmx.de
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/ring_buffer.c')
| -rw-r--r-- | kernel/trace/ring_buffer.c | 13 |
1 files changed, 2 insertions, 11 deletions
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index 725153d6cf73..f00ede314eb6 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c @@ -3980,20 +3980,11 @@ rb_simple_write(struct file *filp, const char __user *ubuf, size_t cnt, loff_t *ppos) { unsigned long *p = filp->private_data; - char buf[64]; unsigned long val; int ret; - if (cnt >= sizeof(buf)) - return -EINVAL; - - if (copy_from_user(&buf, ubuf, cnt)) - return -EFAULT; - - buf[cnt] = 0; - - ret = strict_strtoul(buf, 10, &val); - if (ret < 0) + ret = kstrtoul_from_user(ubuf, cnt, 10, &val); + if (ret) return ret; if (val) |