Add a helper, which returns the number of threads of the given type
(userspace only or all) that are still to be frozen.
Signed-off-by: Nigel Cunningham <[email protected]>
kernel/power/process.c | 23 +++++++++++++++++++++++
1 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/kernel/power/process.c b/kernel/power/process.c
index dffe645..d5d052a 100644
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -204,6 +204,29 @@ void thaw_processes(int do_all_threads)
}
}
+/*
+ * num_freezeable
+ *
+ * Description: Determine how many processes of our type are still to be
+ * frozen. As a side effect, update the progress bar too.
+ * Parameters: int Which type we are trying to freeze.
+ * int Whether we are displaying our progress.
+ */
+static int num_freezeable(int do_all_threads)
+{
+ struct task_struct *g, *p;
+ int todo_this_type = 0;
+
+ read_lock(&tasklist_lock);
+ do_each_thread(g, p) {
+ if (freezeable(p, do_all_threads))
+ todo_this_type++;
+ } while_each_thread(g, p);
+ read_unlock(&tasklist_lock);
+
+ return todo_this_type;
+}
+
static inline void freeze(struct task_struct *p)
{
unsigned long flags;
--
Nigel Cunningham nigel at suspend2 dot net
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