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| author |   Oleg Nesterov <oleg@tv-sign.ru> | 2007-10-16 23:27:23 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-17 08:42:54 -0700 |
| commit | 6db840fa7887980ef68a649640d506fe069eef0c (patch) | |
| tree | 6248c1e65b572f1c2b14c46848e5a18df003f60e /scripts | |
| parent | exec: consolidate 2 fast-paths (diff) | |
| download | linux-dev-6db840fa7887980ef68a649640d506fe069eef0c.tar.xz linux-dev-6db840fa7887980ef68a649640d506fe069eef0c.zip | |
exec: RT sub-thread can livelock and monopolize CPU on exec
de_thread() yields waiting for ->group_leader to be a zombie. This deadlocks
if an rt-prio execer shares the same cpu with ->group_leader. Change the code
to use ->group_exit_task/notify_count mechanics.
This patch certainly uglifies the code, perhaps someone can suggest something
better.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts')
0 files changed, 0 insertions, 0 deletions