offline_class was defined as an early_param. But the callback
function return 1 which lead to a warning message
"[ 0.000000] Malformed early option 'offline_class'"
when booting.
Signed-off-by: Xiaoguang Chen <xiaoggchen@tencent.com>
This commit add cpu.offline to cpu cgroup, echo 1 > cpu.offline would
convert all tasks under this cgroup to offline task. Beside, a new
sysctl sysctl_sched_bt_ignore_cpubind is added, which makes offline
tasks ignoring CPU binding and running on any CPU.
Signed-off-by: Xiaoming Gao <newtongao@tencent.com>
Signed-off-by: Hua Liu <shookliu@tencent.com>
Signed-off-by: Xiaogguang Chen <xiaoggchen@tencent.com>
Signed-off-by: Zhiguang Peng <zgpeng@tencent.com>
Signed-off-by: Bin Fan <tombinfan@tencent.com>
Signed-off-by: He Chen <heddchen@tencent.com>
The offline scheduler named BT sched is based on the CFS scheduler. We
also use the rb-tree as the run queue to save the runnable tasks. And the
vruntime concept is also used in the offline scheduler. And the priority
of offline scheduler is from 140 to 179. So now the schedulers in the
kernel are as follows: stop, RT, CFS, BT and idle.
Signed-off-by: Xiaoming Gao <newtongao@tencent.com>
Signed-off-by: Hua Liu <shookliu@tencent.com>
Signed-off-by: Xiaogguang Chen <xiaoggchen@tencent.com>
Signed-off-by: Zhiguang Peng <zgpeng@tencent.com>
Signed-off-by: Bin Fan <tombinfan@tencent.com>
Signed-off-by: He Chen <heddchen@tencent.com>
chen xiaoguang