[ 02/23] [Suspend2] Add new include/linux/freezer.h header.

[Nigel Cunningham <nigel@suspend2.net>]

This patch implements a new freezer header file, separated from
suspend.h and sched.h so that 95 percent of the kernel doesn't need
to be recompiled if/when we modify the freezer implementation.

Signed-off-by: Nigel Cunningham <nigel@suspend2.net>

 include/linux/freezer.h |   28 ++++++++++++++++++++++++++++
 1 files changed, 28 insertions(+), 0 deletions(-)

diff --git a/include/linux/freezer.h b/include/linux/freezer.h
new file mode 100644
index 0000000..5663f24
--- /dev/null
+++ b/include/linux/freezer.h
@@ -0,0 +1,28 @@
+/* Freezer declarations */
+
+#define FREEZER_ON 0
+#define ABORT_FREEZING 1
+
+#define FREEZER_KERNEL_THREADS 0
+#define FREEZER_ALL_THREADS 1
+
+#ifdef CONFIG_PM
+extern unsigned long freezer_state;
+
+#define test_freezer_state(bit) test_bit(bit, &freezer_state)
+#define set_freezer_state(bit) set_bit(bit, &freezer_state)
+#define clear_freezer_state(bit) clear_bit(bit, &freezer_state)
+
+#define freezer_is_on() (test_freezer_state(FREEZER_ON))
+
+extern void do_freeze_process(struct notifier_block *nl);
+
+#else
+
+#define test_freezer_state(bit) (0)
+#define set_freezer_state(bit) do { } while(0)
+#define clear_freezer_state(bit) do { } while(0)
+
+#define freezer_is_on() (0)
+
+#endif

--
Nigel Cunningham		nigel at suspend2 dot net
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