[PATCH v5 03/15] sched.h: introduce TASK_COMM_LEN_16

[Yafang Shao]

There're many hard-coded 16 used to store task comm in the kernel, that
makes it error prone if we want to change the value of TASK_COMM_LEN. A
new marco TASK_COMM_LEN_16 is introduced to replace these old ones, then
we can easily grep them.

Signed-off-by: Yafang Shao <laoar.shao@xxxxxxxxx>
Cc: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Petr Mladek <pmladek@xxxxxxxx>
---
 include/linux/sched.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/sched.h b/include/linux/sched.h
index c1a927ddec64..62d5b30d310c 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -274,6 +274,8 @@ struct task_group;
 
 #define get_current_state()	READ_ONCE(current->__state)
 
+/* To replace the old hard-coded 16 */
+#define TASK_COMM_LEN_16		16
 /* Task command name length: */
 #define TASK_COMM_LEN			16
 
-- 
2.17.1