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authorOleg Nesterov <oleg@tv-sign.ru>2007-10-16 23:27:23 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-17 08:42:54 -0700
commit6db840fa7887980ef68a649640d506fe069eef0c (patch)
tree6248c1e65b572f1c2b14c46848e5a18df003f60e /Documentation/xterm-linux.xpm
parent356d6d5058c8082b9e811838ab2fa27825c947e4 (diff)
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 'Documentation/xterm-linux.xpm')
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