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Subject[PATCH] sched: share task comm length value to userspace
Date
This change allows to get a defined length of task comm in
userspace. For a moment this value is implied at least in two cases:
* max length of comm value got from /proc/$pid/stat
* max string length argument of prctl(PR_[SG]ET_NAME, ...)

For these reasons it becomes desirable to impart task comm max length
value to userspace.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
---
include/linux/sched.h | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 4ac2c05..21d300b 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -42,6 +42,9 @@
/* Can be ORed in to make sure the process is reverted back to SCHED_NORMAL on fork */
#define SCHED_RESET_ON_FORK 0x40000000

+/* Task command name length */
+#define TASK_COMM_LEN 16
+
#ifdef __KERNEL__

struct sched_param {
@@ -242,9 +245,6 @@ extern char ___assert_task_state[1 - 2*!!(
#define set_current_state(state_value) \
set_mb(current->state, (state_value))

-/* Task command name length */
-#define TASK_COMM_LEN 16
-
#include <linux/spinlock.h>

/*
--
1.7.5.4


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