aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/base/topology.c
diff options
context:
space:
mode:
authorRafael J. Wysocki <rjw@sisk.pl>2007-05-09 05:35:10 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-09 15:30:56 -0400
commit8bb7844286fb8c9fce6f65d8288aeb09d03a5e0d (patch)
treef4e305edaedbde05774bb1e4acd89a9475661d2e /drivers/base/topology.c
parentf37bc2712b54ec641e0c0c8634f1a4b61d9956c0 (diff)
Add suspend-related notifications for CPU hotplug
Since nonboot CPUs are now disabled after tasks and devices have been frozen and the CPU hotplug infrastructure is used for this purpose, we need special CPU hotplug notifications that will help the CPU-hotplug-aware subsystems distinguish normal CPU hotplug events from CPU hotplug events related to a system-wide suspend or resume operation in progress. This patch introduces such notifications and causes them to be used during suspend and resume transitions. It also changes all of the CPU-hotplug-aware subsystems to take these notifications into consideration (for now they are handled in the same way as the corresponding "normal" ones). [oleg@tv-sign.ru: cleanups] Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: Gautham R Shenoy <ego@in.ibm.com> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/base/topology.c')
-rw-r--r--drivers/base/topology.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/base/topology.c b/drivers/base/topology.c
index 067a9e8bc377..8d8cdfec6529 100644
--- a/drivers/base/topology.c
+++ b/drivers/base/topology.c
@@ -126,10 +126,13 @@ static int __cpuinit topology_cpu_callback(struct notifier_block *nfb,
126 126
127 switch (action) { 127 switch (action) {
128 case CPU_UP_PREPARE: 128 case CPU_UP_PREPARE:
129 case CPU_UP_PREPARE_FROZEN:
129 rc = topology_add_dev(cpu); 130 rc = topology_add_dev(cpu);
130 break; 131 break;
131 case CPU_UP_CANCELED: 132 case CPU_UP_CANCELED:
133 case CPU_UP_CANCELED_FROZEN:
132 case CPU_DEAD: 134 case CPU_DEAD:
135 case CPU_DEAD_FROZEN:
133 topology_remove_dev(cpu); 136 topology_remove_dev(cpu);
134 break; 137 break;
135 } 138 }