diff options
author | Paul Mackerras <paulus@samba.org> | 2006-08-08 17:09:11 +1000 |
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committer | Paul Mackerras <paulus@samba.org> | 2006-08-08 17:09:11 +1000 |
commit | 32bc6e095d75233e7c87cc6fa0e07942b124d194 (patch) | |
tree | 8f83ef9a23d52d1305878b65dd98fc22b09b7f3e /kernel/power | |
parent | 5cf13911b1e72707b6f0eb39b2d819ec6e343d76 (diff) | |
parent | 81b73dd92b97423b8f5324a59044da478c04f4c4 (diff) |
Merge branch 'merge'
Diffstat (limited to 'kernel/power')
-rw-r--r-- | kernel/power/process.c | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/kernel/power/process.c b/kernel/power/process.c index b2a5f671d6c..72e72d2c61e 100644 --- a/kernel/power/process.c +++ b/kernel/power/process.c @@ -66,13 +66,25 @@ static inline void freeze_process(struct task_struct *p) } } +static void cancel_freezing(struct task_struct *p) +{ + unsigned long flags; + + if (freezing(p)) { + pr_debug(" clean up: %s\n", p->comm); + do_not_freeze(p); + spin_lock_irqsave(&p->sighand->siglock, flags); + recalc_sigpending_tsk(p); + spin_unlock_irqrestore(&p->sighand->siglock, flags); + } +} + /* 0 = success, else # of processes that we failed to stop */ int freeze_processes(void) { int todo, nr_user, user_frozen; unsigned long start_time; struct task_struct *g, *p; - unsigned long flags; printk( "Stopping tasks: " ); start_time = jiffies; @@ -85,6 +97,10 @@ int freeze_processes(void) continue; if (frozen(p)) continue; + if (p->state == TASK_TRACED && frozen(p->parent)) { + cancel_freezing(p); + continue; + } if (p->mm && !(p->flags & PF_BORROWED_MM)) { /* The task is a user-space one. * Freeze it unless there's a vfork completion @@ -126,13 +142,7 @@ int freeze_processes(void) do_each_thread(g, p) { if (freezeable(p) && !frozen(p)) printk(KERN_ERR " %s\n", p->comm); - if (freezing(p)) { - pr_debug(" clean up: %s\n", p->comm); - p->flags &= ~PF_FREEZE; - spin_lock_irqsave(&p->sighand->siglock, flags); - recalc_sigpending_tsk(p); - spin_unlock_irqrestore(&p->sighand->siglock, flags); - } + cancel_freezing(p); } while_each_thread(g, p); read_unlock(&tasklist_lock); return todo; |