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authorHans-Joachim Picht <hans@linux.vnet.ibm.com>2009-06-16 10:30:52 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2009-06-16 10:31:22 +0200
commit155af2f95f905c830688dd0ca7c7cac4107334fd (patch)
tree4304a39e713d1594903e838830c4029715cc7a2a /arch/s390/power/swsusp.c
parentc369527f18f8560bd3580be2676cb55b54b02ee6 (diff)
downloadlinux-linaro-stable-155af2f95f905c830688dd0ca7c7cac4107334fd.tar.gz
[S390] s390: hibernation support for s390
This patch introduces the hibernation backend support to the s390 architecture. Now it is possible to suspend a mainframe Linux guest using the following command: echo disk > /sys/power/state Signed-off-by: Hans-Joachim Picht <hans@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/power/swsusp.c')
-rw-r--r--arch/s390/power/swsusp.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/s390/power/swsusp.c b/arch/s390/power/swsusp.c
new file mode 100644
index 000000000000..e6a4fe9f5f24
--- /dev/null
+++ b/arch/s390/power/swsusp.c
@@ -0,0 +1,30 @@
+/*
+ * Support for suspend and resume on s390
+ *
+ * Copyright IBM Corp. 2009
+ *
+ * Author(s): Hans-Joachim Picht <hans@linux.vnet.ibm.com>
+ *
+ */
+
+
+/*
+ * save CPU registers before creating a hibernation image and before
+ * restoring the memory state from it
+ */
+void save_processor_state(void)
+{
+ /* implentation contained in the
+ * swsusp_arch_suspend function
+ */
+}
+
+/*
+ * restore the contents of CPU registers
+ */
+void restore_processor_state(void)
+{
+ /* implentation contained in the
+ * swsusp_arch_resume function
+ */
+}