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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] Clean up recent changes to reboot code. This fixes PV save/restore.
# HG changeset patch
# User kfraser@xxxxxxxxxxxxxxxxxxxxx
# Node ID 6ad98bc30cb4b8e2b59e91e0bf4fbf7099609bc4
# Parent ada9ee6ce078f3af3f85cc7486f48851bb9ff28c
Clean up recent changes to reboot code. This fixes PV save/restore.
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
---
linux-2.6-xen-sparse/include/xen/reboot.h | 19 ------
linux-2.6-xen-sparse/drivers/xen/core/machine_reboot.c | 19 ------
linux-2.6-xen-sparse/drivers/xen/core/reboot.c | 51 +++++++++++++----
tools/python/xen/xend/image.py | 2
4 files changed, 43 insertions(+), 48 deletions(-)
diff -r ada9ee6ce078 -r 6ad98bc30cb4
linux-2.6-xen-sparse/drivers/xen/core/machine_reboot.c
--- a/linux-2.6-xen-sparse/drivers/xen/core/machine_reboot.c Tue Oct 31
15:04:05 2006 +0000
+++ b/linux-2.6-xen-sparse/drivers/xen/core/machine_reboot.c Tue Oct 31
15:54:03 2006 +0000
@@ -18,7 +18,6 @@
#include <xen/gnttab.h>
#include <xen/xencons.h>
#include <xen/cpu_hotplug.h>
-#include <xen/reboot.h>
#if defined(__i386__) || defined(__x86_64__)
@@ -125,7 +124,7 @@ static void post_suspend(void)
#endif
-int __do_suspend(void *ignore)
+int __xen_suspend(void)
{
int err;
@@ -164,8 +163,6 @@ int __do_suspend(void *ignore)
*/
HYPERVISOR_suspend(virt_to_mfn(xen_start_info));
- shutting_down = SHUTDOWN_INVALID;
-
post_suspend();
gnttab_resume();
@@ -186,17 +183,3 @@ int __do_suspend(void *ignore)
return err;
}
-
-int kthread_create_on_cpu(int (*f)(void *arg),
- void *arg,
- const char *name,
- int cpu)
-{
- struct task_struct *p;
- p = kthread_create(f, arg, name);
- if (IS_ERR(p))
- return PTR_ERR(p);
- kthread_bind(p, cpu);
- wake_up_process(p);
- return 0;
-}
diff -r ada9ee6ce078 -r 6ad98bc30cb4
linux-2.6-xen-sparse/drivers/xen/core/reboot.c
--- a/linux-2.6-xen-sparse/drivers/xen/core/reboot.c Tue Oct 31 15:04:05
2006 +0000
+++ b/linux-2.6-xen-sparse/drivers/xen/core/reboot.c Tue Oct 31 15:54:03
2006 +0000
@@ -8,12 +8,30 @@
#include <asm/hypervisor.h>
#include <xen/xenbus.h>
#include <linux/kthread.h>
-#include <xen/reboot.h>
MODULE_LICENSE("Dual BSD/GPL");
+
+#define SHUTDOWN_INVALID -1
+#define SHUTDOWN_POWEROFF 0
+#define SHUTDOWN_SUSPEND 2
+/* Code 3 is SHUTDOWN_CRASH, which we don't use because the domain can only
+ * report a crash, not be instructed to crash!
+ * HALT is the same as POWEROFF, as far as we're concerned. The tools use
+ * the distinction when we return the reason code to them.
+ */
+#define SHUTDOWN_HALT 4
+
+/* Ignore multiple shutdown requests. */
+static int shutting_down = SHUTDOWN_INVALID;
static void __shutdown_handler(void *unused);
static DECLARE_WORK(shutdown_work, __shutdown_handler, NULL);
+
+#ifdef CONFIG_XEN
+int __xen_suspend(void);
+#else
+#define __xen_suspend() 0
+#endif
static int shutdown_process(void *__unused)
{
@@ -41,21 +59,36 @@ static int shutdown_process(void *__unus
return 0;
}
+static int xen_suspend(void *__unused)
+{
+ __xen_suspend();
+ shutting_down = SHUTDOWN_INVALID;
+ return 0;
+}
+
+static int kthread_create_on_cpu(int (*f)(void *arg),
+ void *arg,
+ const char *name,
+ int cpu)
+{
+ struct task_struct *p;
+ p = kthread_create(f, arg, name);
+ if (IS_ERR(p))
+ return PTR_ERR(p);
+ kthread_bind(p, cpu);
+ wake_up_process(p);
+ return 0;
+}
static void __shutdown_handler(void *unused)
{
int err;
-#ifdef CONFIG_XEN
if (shutting_down != SHUTDOWN_SUSPEND)
err = kernel_thread(shutdown_process, NULL,
CLONE_FS | CLONE_FILES);
else
- err = kthread_create_on_cpu(__do_suspend, NULL, "suspend", 0);
-#else /* !CONFIG_XEN */
- err = kernel_thread(shutdown_process, NULL,
- CLONE_FS | CLONE_FILES);
-#endif /* !CONFIG_XEN */
+ err = kthread_create_on_cpu(xen_suspend, NULL, "suspend", 0);
if (err < 0) {
printk(KERN_WARNING "Error creating shutdown process (%d): "
@@ -71,8 +104,6 @@ static void shutdown_handler(struct xenb
struct xenbus_transaction xbt;
int err;
- int cad_pid = 1;
-
if (shutting_down != SHUTDOWN_INVALID)
return;
@@ -98,7 +129,7 @@ static void shutdown_handler(struct xenb
if (strcmp(str, "poweroff") == 0)
shutting_down = SHUTDOWN_POWEROFF;
else if (strcmp(str, "reboot") == 0)
- kill_proc(cad_pid, SIGINT, 1);
+ kill_proc(1, SIGINT, 1); /* interrupt init */
else if (strcmp(str, "suspend") == 0)
shutting_down = SHUTDOWN_SUSPEND;
else if (strcmp(str, "halt") == 0)
diff -r ada9ee6ce078 -r 6ad98bc30cb4 tools/python/xen/xend/image.py
--- a/tools/python/xen/xend/image.py Tue Oct 31 15:04:05 2006 +0000
+++ b/tools/python/xen/xend/image.py Tue Oct 31 15:54:03 2006 +0000
@@ -462,7 +462,7 @@ class HVMImageHandler(ImageHandler):
def register_reboot_feature_watch(self):
""" add xen store watch on control/feature-reboot """
- self.rebootModuleWatch = xswatch(self.vm.dompath +
"/control/feature-reboot", \
+ self.rebootFeatureWatch = xswatch(self.vm.dompath +
"/control/feature-reboot", \
self.hvm_reboot_feature)
log.debug("hvm reboot feature watch registered")
diff -r ada9ee6ce078 -r 6ad98bc30cb4 linux-2.6-xen-sparse/include/xen/reboot.h
--- a/linux-2.6-xen-sparse/include/xen/reboot.h Tue Oct 31 15:04:05 2006 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,19 +0,0 @@
-#define SHUTDOWN_INVALID -1
-#define SHUTDOWN_POWEROFF 0
-#define SHUTDOWN_SUSPEND 2
-/* Code 3 is SHUTDOWN_CRASH, which we don't use because the domain can only
- * report a crash, not be instructed to crash!
- * HALT is the same as POWEROFF, as far as we're concerned. The tools use
- * the distinction when we return the reason code to them.
- */
-#define SHUTDOWN_HALT 4
-
-/******************************************************************************
- * Stop/pickle callback handling.
- */
-
-/* Ignore multiple shutdown requests. */
-static int shutting_down = SHUTDOWN_INVALID;
-
-int kthread_create_on_cpu(int (*f)(void *), void *, const char *, int);
-int __do_suspend(void *);
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