Commit 3d13ec2e authored Dec 30, 2009 by Li Zefan Committed by Ingo Molnar Dec 30, 2009

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 d954fbf0
("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>

parent 88f7a890

kernel/trace/trace_ksym.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -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;