proc: add RLIMIT_RTTIME to /proc/<pid>/limits

RLIMIT_RTTIME was introduced to allow the user to set a runtime timeout on
real-time tasks: http://lkml.org/lkml/2007/12/18/218. This patch updates
/proc/<pid>/limits with the new rlimit.

Signed-off-by: Eugene Teo <eugeneteo@kernel.sg>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/proc/base.c b/fs/proc/base.c
index 88f8edf18258ac50681474ffc9542c75de30ecda..96ee899d65020e76e5c0c8d49b0683c74214ebed 100644 (file)
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -416,6 +416,7 @@ static const struct limit_names lnames[RLIM_NLIMITS] = {
        [RLIMIT_MSGQUEUE] = {"Max msgqueue size", "bytes"},
        [RLIMIT_NICE] = {"Max nice priority", NULL},
        [RLIMIT_RTPRIO] = {"Max realtime priority", NULL},
+       [RLIMIT_RTTIME] = {"Max realtime timeout", "us"},
 };
 
 /* Display limits for a process */