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    cgroup: don't use subsys->can_attach_task() or ->attach_task() · bb9d97b6
    Tejun Heo 提交于
    Now that subsys->can_attach() and attach() take @tset instead of
    @task, they can handle per-task operations.  Convert
    ->can_attach_task() and ->attach_task() users to use ->can_attach()
    and attach() instead.  Most converions are straight-forward.
    Noteworthy changes are,
    
    * In cgroup_freezer, remove unnecessary NULL assignments to unused
      methods.  It's useless and very prone to get out of sync, which
      already happened.
    
    * In cpuset, PF_THREAD_BOUND test is checked for each task.  This
      doesn't make any practical difference but is conceptually cleaner.
    Signed-off-by: NTejun Heo <tj@kernel.org>
    Reviewed-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
    Reviewed-by: NFrederic Weisbecker <fweisbec@gmail.com>
    Acked-by: NLi Zefan <lizf@cn.fujitsu.com>
    Cc: Paul Menage <paul@paulmenage.org>
    Cc: Balbir Singh <bsingharora@gmail.com>
    Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
    Cc: James Morris <jmorris@namei.org>
    Cc: Ingo Molnar <mingo@elte.hu>
    Cc: Peter Zijlstra <peterz@infradead.org>
    bb9d97b6
core.c 161.5 KB