From: Yong Zhang Date: Tue, 28 Jun 2011 02:51:31 +0000 (+0800) Subject: sched: Skip autogroup when looking for all rt sched groups X-Git-Tag: v3.1-rc1~298^2~15 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1c09ab0d257317f97e8629a3d0c8713d6dd9de4c;p=pandora-kernel.git sched: Skip autogroup when looking for all rt sched groups Since commit ec514c48 ("sched: Fix rt_rq runtime leakage bug") 'cat /proc/sched_debug' will print data of root_task_group.rt_rq multiple times. This is because autogroup does not have its own rt group, instead rt group of autogroup is linked to root_task_group. So skip it when we are looking for all rt sched groups, and it will also save some noop operation against root_task_group when __disable_runtime()/__enable_runtime(). -v2: Based on Cheng Xu's idea which uses less code. Signed-off-by: Yong Zhang Cc: Mike Galbraith Cc: Cheng Xu Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/BANLkTi=87P3RoTF_UEtamNfc_XGxQXE__Q@mail.gmail.com Signed-off-by: Ingo Molnar --- Reading git-diff-tree failed