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| author | Oleg Nesterov <[email protected]> | 2010-05-26 21:43:11 +0000 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2010-05-27 16:12:46 +0000 |
| commit | d344193a05da89c97e965da2c5cbf687d7385eae (patch) | |
| tree | 6267b68c31c4547f1749acd35d2a5bfaff919839 /fs/proc/array.c | |
| parent | exit: change zap_other_threads() to count sub-threads (diff) | |
| download | kernel-d344193a05da89c97e965da2c5cbf687d7385eae.tar.gz kernel-d344193a05da89c97e965da2c5cbf687d7385eae.zip | |
exit: avoid sig->count in de_thread/__exit_signal synchronization
de_thread() and __exit_signal() use signal_struct->count/notify_count for
synchronization. We can simplify the code and use ->notify_count only.
Instead of comparing these two counters, we can change de_thread() to set
->notify_count = nr_of_sub_threads, then change __exit_signal() to
dec-and-test this counter and notify group_exit_task.
Note that __exit_signal() checks "notify_count > 0" just for symmetry with
exit_notify(), we could just check it is != 0.
Signed-off-by: Oleg Nesterov <[email protected]>
Acked-by: Roland McGrath <[email protected]>
Cc: Veaceslav Falico <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'fs/proc/array.c')
0 files changed, 0 insertions, 0 deletions