Move xen patchset to new version's subdir.

[people/pmueller/ipfire-2.x.git] / src / patches / suse-2.6.27.31 / patches.xen / 769-evtchn-CPU-offline.patch

diff --git a/src/patches/suse-2.6.27.31/patches.xen/769-evtchn-CPU-offline.patch b/src/patches/suse-2.6.27.31/patches.xen/769-evtchn-CPU-offline.patch
new file mode 100644 (file)
index 0000000..19fe4d1
--- /dev/null
+++ b/src/patches/suse-2.6.27.31/patches.xen/769-evtchn-CPU-offline.patch
@@ -0,0 +1,48 @@
+From: http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/79e82ae1bad0
+# HG changeset 769 patch
+# User Keir Fraser <keir.fraser@citrix.com>
+# Date 1231154982 0
+# Node ID 79e82ae1bad02c0dfb504db3153599e52a0affb3
+# Parent  cfb171ddbb333df9671a1da62e40122a56213ab4
+Subject: evtchn: Fix CPU offlining to switch all affected ports
+belonging to a particular /dev/evcthn user.
+Patch-mainline: obsolete
+
+Original patch by James Harper <james.harper@bendigoit.com.au>
+
+Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
+Acked-by: jbeulich@novell.com
+
+--- head-2009-01-06.orig/drivers/xen/evtchn/evtchn.c   2008-09-01 12:20:11.000000000 +0200
++++ head-2009-01-06/drivers/xen/evtchn/evtchn.c        2009-01-05 12:29:42.000000000 +0100
+@@ -497,20 +497,22 @@ static int __cpuinit evtchn_cpu_notify(s
+ {
+       int hotcpu = (unsigned long)hcpu;
+       cpumask_t map = cpu_online_map;
+-      int port, newcpu;
++      int i, j, newcpu;
+       struct per_user_data *u;
+ 
+       switch (action) {
+       case CPU_DOWN_PREPARE:
+               cpu_clear(hotcpu, map);
+               spin_lock_irq(&port_user_lock);
+-              for (port = 0; port < NR_EVENT_CHANNELS; port++) {
+-                      if ((u = port_user[port]) != NULL && 
+-                          u->bind_cpu == hotcpu &&
+-                          (newcpu = next_bind_cpu(map)) < NR_CPUS) {
+-                              rebind_evtchn_to_cpu(port, newcpu);
+-                              u->bind_cpu = newcpu;
+-                      }
++              for (i = 0; i < NR_EVENT_CHANNELS; i++) {
++                      u = port_user[i];
++                      if ((u == NULL) || (u->bind_cpu != hotcpu))
++                              continue;
++                      newcpu = next_bind_cpu(map);
++                      for (j = i; j < NR_EVENT_CHANNELS; j++)
++                              if (port_user[j] == u)
++                                      rebind_evtchn_to_cpu(j, newcpu);
++                      u->bind_cpu = newcpu;
+               }
+               spin_unlock_irq(&port_user_lock);
+               break;