Resend. IMHO this makes sense anyway, but mostly this is preparation for other changes. show_state_filter() and other "slow" users of for_each_process() can livelock and even trigger hard lockups.
Peter, you have already reviewed at least 1/2 (heh, two years ago) and iirc you were mostly agree but pointed out that for_each_xxx() in _continue() could be SPEND_TOO_MUCH_TIME themselves. I added a note into the changelog. Oleg. include/linux/sched/signal.h | 10 ++++++++++ kernel/exit.c | 42 ++++++++++++++++++++++++++++++++++++++++++ kernel/hung_task.c | 25 +++++++++---------------- 3 files changed, 61 insertions(+), 16 deletions(-)
