add RUSAGE_THREAD

Add the RUSAGE_THREAD option for the getrusage system call.  This is
essentially Roland's patch from http://lkml.org/lkml/2008/1/18/589, but the
line about RUSAGE_LWP line has been removed, as suggested by Ulrich and
Christoph.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Sripathi Kodi <sripathik@in.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Michael Kerrisk <mtk.manpages@googlemail.com>
Cc: Ulrich Drepper <drepper@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/resource.h b/include/linux/resource.h
index ae13db71474..aaa423a6f3d 100644
--- a/include/linux/resource.h
+++ b/include/linux/resource.h
@@ -19,6 +19,7 @@ struct task_struct;
 #define RUSAGE_SELF     0
 #define RUSAGE_CHILDREN (-1)
 #define RUSAGE_BOTH     (-2)            /* sys_wait4() uses this */
+#define RUSAGE_THREAD   1               /* only the calling thread */
 
 struct  rusage {
         struct timeval ru_utime;        /* user time used */