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authorIan Campbell <Ian.Campbell@citrix.com>2009-11-25 14:12:08 +0000
committerJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2009-12-03 11:14:55 -0800
commitf6eafe3665bcc374c66775d58312d1c06c55303f (patch)
tree2f344a1ab46b3c92990af71a8f89d2f6f7096083 /arch/x86/xen
parent6aaf5d633bb6cead81b396d861d7bae4b9a0ba7e (diff)
downloadop-kernel-dev-f6eafe3665bcc374c66775d58312d1c06c55303f.zip
op-kernel-dev-f6eafe3665bcc374c66775d58312d1c06c55303f.tar.gz
xen: call clock resume notifier on all CPUs
tick_resume() is never called on secondary processors. Presumably this is because they are offlined for suspend on native and so this is normally taken care of in the CPU onlining path. Under Xen we keep all CPUs online over a suspend. This patch papers over the issue for me but I will investigate a more generic, less hacky, way of doing to the same. tick_suspend is also only called on the boot CPU which I presume should be fixed too. Signed-off-by: Ian Campbell <Ian.Campbell@citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Stable Kernel <stable@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/xen')
-rw-r--r--arch/x86/xen/suspend.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/arch/x86/xen/suspend.c b/arch/x86/xen/suspend.c
index 6343a5d..987267f 100644
--- a/arch/x86/xen/suspend.c
+++ b/arch/x86/xen/suspend.c
@@ -1,4 +1,5 @@
#include <linux/types.h>
+#include <linux/clockchips.h>
#include <xen/interface/xen.h>
#include <xen/grant_table.h>
@@ -46,7 +47,19 @@ void xen_post_suspend(int suspend_cancelled)
}
+static void xen_vcpu_notify_restore(void *data)
+{
+ unsigned long reason = (unsigned long)data;
+
+ /* Boot processor notified via generic timekeeping_resume() */
+ if ( smp_processor_id() == 0)
+ return;
+
+ clockevents_notify(reason, NULL);
+}
+
void xen_arch_resume(void)
{
- /* nothing */
+ smp_call_function(xen_vcpu_notify_restore,
+ (void *)CLOCK_EVT_NOTIFY_RESUME, 1);
}
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