Messages in this thread Patch in this message | | | From | Nigel Cunningham <> | Subject | [ 16/23] [Suspend2] Helper to signal all threads of a type. | Date | Thu, 26 Jan 2006 13:45:59 +1000 |
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Add a helper to do the actual signalling of processes, telling them to enter the refrigerator.
Signed-off-by: Nigel Cunningham <nigel@suspend2.net>
kernel/power/process.c | 25 +++++++++++++++++++++++++ 1 files changed, 25 insertions(+), 0 deletions(-)
diff --git a/kernel/power/process.c b/kernel/power/process.c index 9cfafa7..2857c8b 100644 --- a/kernel/power/process.c +++ b/kernel/power/process.c @@ -250,6 +250,31 @@ static int num_uninterruptible(int do_al return count; } +/* + * Tell threads of the type to enter the freezer. + */ +static void signal_threads(int do_all_threads) +{ + struct task_struct *g, *p; + struct notifier_block *n; + + read_lock(&tasklist_lock); + do_each_thread(g, p) { + if (!freezeable(p, do_all_threads)) + continue; + + n = kmalloc(sizeof(struct notifier_block), + GFP_ATOMIC); + + if (n) { + n->notifier_call = freeze_process; + n->priority = 0; + notifier_chain_register(&p->todo, n); + } + } while_each_thread(g, p); + read_unlock(&tasklist_lock); +} + static inline void freeze(struct task_struct *p) { unsigned long flags; -- Nigel Cunningham nigel at suspend2 dot net - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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