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authorLi Zefan <lizf@cn.fujitsu.com>2009-12-30 14:23:19 +0800
committerIngo Molnar <mingo@elte.hu>2009-12-30 07:50:49 +0100
commit3d13ec2efdb5843ad91e57b60d50b44d922cf063 (patch)
tree35eb9a0ce4571bded972c28bc00526d9f51819dd /kernel
parent88f7a890d74137ab0d126a5d65679cd620f1a289 (diff)
downloadvexpress-lsk-3d13ec2efdb5843ad91e57b60d50b44d922cf063.tar.gz
ksym_tracer: Fix to allow writing newline to ksym_trace_filter
It used to work, but now doesn't: # echo > ksym_filter bash: echo: write error: Invalid argument It's caused by d954fbf0ff6b5fdfb32350e85a2f15d3db976506 ("tracing: Fix wrong usage of strstrip in trace_ksyms"). Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <4B3AF1D7.5040400@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/trace/trace_ksym.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/trace/trace_ksym.c b/kernel/trace/trace_ksym.c
index 340b6ff193e..160a8d8b37a 100644
--- a/kernel/trace/trace_ksym.c
+++ b/kernel/trace/trace_ksym.c
@@ -299,8 +299,8 @@ static ssize_t ksym_trace_filter_write(struct file *file,
* 2: echo 0 > ksym_trace_filter
* 3: echo "*:---" > ksym_trace_filter
*/
- if (!buf[0] || !strcmp(buf, "0") ||
- !strcmp(buf, "*:---")) {
+ if (!input_string[0] || !strcmp(input_string, "0") ||
+ !strcmp(input_string, "*:---")) {
__ksym_trace_reset();
ret = 0;
goto out;