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sched: Remove the obsolete exit_state/signal hacks

account_group_xxx() functions check ->exit_state to ensure that
current->signal is valid and can't go away. This is not needed
since ea6d290c, task->signal is pinned to task_struct.

The comment and another hack in account_group_exec_runtime() refers
to task_rq_unlock_wait() which was already removed by b7b8ff63.

Signed-off-by: Oleg Nesterov <>
Signed-off-by: Peter Zijlstra <>
LKML-Reference: <>
Signed-off-by: Ingo Molnar <>

Oleg Nesterov Oleg Nesterov 2010-06-10

Ingo Molnar Ingo Molnar 2010-06-18

changed kernel
changed kernel/sched_stats.h
kernel/sched_stats.h Diff Switch to side-by-side view