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authorKirill Korotaev <dev@sw.ru>2005-06-23 00:09:51 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-23 09:45:27 -0700
commit4fea2838aa00b9e59efde974dcdb455608192811 (patch)
treef5de626cd00b232c8d3183bfcf3a1a669c1ff738
parentaf4d2ecbf007b7df3db7a41eedccdc05b8006d0b (diff)
[PATCH] Software suspend and recalc sigpending bug fix
This patch fixes recalc_sigpending() to work correctly with tasks which are being freezed. The problem is that freeze_processes() sets PF_FREEZE and TIF_SIGPENDING flags on tasks, but recalc_sigpending() called from e.g. sys_rt_sigtimedwait or any other kernel place will clear TIF_SIGPENDING due to no pending signals queued and the tasks won't be freezed until it recieves a real signal or freezed_processes() fail due to timeout. Signed-Off-By: Kirill Korotaev <dev@sw.ru> Signed-Off-By: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--kernel/signal.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/signal.c b/kernel/signal.c
index c89821b69ae..d1258729a5f 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -213,6 +213,7 @@ static inline int has_pending_signals(sigset_t *signal, sigset_t *blocked)
fastcall void recalc_sigpending_tsk(struct task_struct *t)
{
if (t->signal->group_stop_count > 0 ||
+ (t->flags & PF_FREEZE) ||
PENDING(&t->pending, &t->blocked) ||
PENDING(&t->signal->shared_pending, &t->blocked))
set_tsk_thread_flag(t, TIF_SIGPENDING);