echo nop > /sys/kernel/debug/tracing/options/current_tracer
echo 1 > /sys/kernel/debug/tracing/options/test_nop_accept
echo 0 > /sys/kernel/debug/tracing/options/test_nop_accept
echo 1 > /sys/kernel/debug/tracing/options/test_nop_refuse
Before the fix, the dmesg is a bit ugly since a align issue.
[ 191.973081] nop_test_accept flag set to 1: we accept. Now cat trace_options
to see the result
[ 195.156942] nop_test_refuse flag set to 1: we refuse.Now cat trace_options
to see the result
After the fix, the dmesg will show aligned log for nop_test_refuse and
nop_test_accept.
[ 2718.032413] nop_test_refuse flag set to 1: we refuse. Now cat trace_options
to see the result
[ 2734.253360] nop_test_accept flag set to 1: we accept. Now cat trace_options
to see the result
Signed-off-by: Chunyu Hu <ch...@redhat.com>
---
kernel/trace/trace_nop.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/trace/trace_nop.c b/kernel/trace/trace_nop.c
index 8bb2071..49f61fe 100644
--- a/kernel/trace/trace_nop.c
+++ b/kernel/trace/trace_nop.c
@@ -56,7 +56,7 @@ static void nop_trace_reset(struct trace_array *tr)
}
/* It only serves as a signal handler and a callback to
- * accept or refuse tthe setting of a flag.
+ * accept or refuse the setting of a flag.
* If you don't implement it, then the flag setting will be
* automatically accepted.
*/
@@ -75,7 +75,7 @@ static int nop_set_flag(struct trace_array *tr, u32
old_flags, u32 bit, int set)
if (bit == TRACE_NOP_OPT_REFUSE) {
printk(KERN_DEBUG "nop_test_refuse flag set to %d: we refuse."
- "Now cat trace_options to see the result\n",
+ " Now cat trace_options to see the result\n",
set);
return -EINVAL;
}
--
1.8.3.1
