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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-10-16 09:22:22 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-10-16 09:22:22 +0200
commit58f2c391cc0560231d7636c39d31b1b26c9396b7 (patch)
tree67956eea736a8763f67be8a52bcaf0d3fe4374f4 /include/linux/cpuhotplug.h
parentc2e5df616e1ae6c2a074cb241ebb65a318ebaf7c (diff)
parent33d930e59a98fa10a0db9f56c7fa2f21a4aef9b9 (diff)
downloadlinux-58f2c391cc0560231d7636c39d31b1b26c9396b7.tar.gz
linux-58f2c391cc0560231d7636c39d31b1b26c9396b7.tar.xz
Merge 4.14-rc5 into char-misc-next
We need the fixes in here to resolve merge issues and for testing. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/cpuhotplug.h')
-rw-r--r--include/linux/cpuhotplug.h21
1 files changed, 20 insertions, 1 deletions
diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h
index f24bfb2b9a2d..6d508767e144 100644
--- a/include/linux/cpuhotplug.h
+++ b/include/linux/cpuhotplug.h
@@ -3,8 +3,27 @@
#include <linux/types.h>
+/*
+ * CPU-up CPU-down
+ *
+ * BP AP BP AP
+ *
+ * OFFLINE OFFLINE
+ * | ^
+ * v |
+ * BRINGUP_CPU->AP_OFFLINE BRINGUP_CPU <- AP_IDLE_DEAD (idle thread/play_dead)
+ * | AP_OFFLINE
+ * v (IRQ-off) ,---------------^
+ * AP_ONLNE | (stop_machine)
+ * | TEARDOWN_CPU <- AP_ONLINE_IDLE
+ * | ^
+ * v |
+ * AP_ACTIVE AP_ACTIVE
+ */
+
enum cpuhp_state {
- CPUHP_OFFLINE,
+ CPUHP_INVALID = -1,
+ CPUHP_OFFLINE = 0,
CPUHP_CREATE_THREADS,
CPUHP_PERF_PREPARE,
CPUHP_PERF_X86_PREPARE,