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authorThomas Gleixner <tglx@linutronix.de>2017-11-13 09:39:01 +0100
committerThomas Gleixner <tglx@linutronix.de>2017-11-13 10:03:53 +0100
commitf4c09f87adfe31587aa4b2aea2cb2dbde2150f54 (patch)
tree2f447482a8c304bc26d0ae02172f979e6ecd5c5b /include/linux/cpu.h
parentc6cd924efe941ef62eb805c59e4a09e219ac5c6d (diff)
downloadlwn-f4c09f87adfe31587aa4b2aea2cb2dbde2150f54.tar.gz
lwn-f4c09f87adfe31587aa4b2aea2cb2dbde2150f54.zip
cpu/hotplug: Get rid of CPU hotplug notifier leftovers
The CPU hotplug notifiers are history. Remove the last reminders. Reported-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/cpu.h')
-rw-r--r--include/linux/cpu.h27
1 files changed, 10 insertions, 17 deletions
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index cd4771b772c0..b6e4a598b2cd 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -55,24 +55,17 @@ extern void unregister_cpu(struct cpu *cpu);
extern ssize_t arch_cpu_probe(const char *, size_t);
extern ssize_t arch_cpu_release(const char *, size_t);
#endif
-struct notifier_block;
-
-#define CPU_ONLINE 0x0002 /* CPU (unsigned)v is up */
-#define CPU_UP_PREPARE 0x0003 /* CPU (unsigned)v coming up */
-#define CPU_DEAD 0x0007 /* CPU (unsigned)v dead */
-#define CPU_POST_DEAD 0x0009 /* CPU (unsigned)v dead, cpu_hotplug
- * lock is dropped */
-#define CPU_BROKEN 0x000B /* CPU (unsigned)v did not die properly,
- * perhaps due to preemption. */
-
-/* Used for CPU hotplug events occurring while tasks are frozen due to a suspend
- * operation in progress
- */
-#define CPU_TASKS_FROZEN 0x0010
-#define CPU_ONLINE_FROZEN (CPU_ONLINE | CPU_TASKS_FROZEN)
-#define CPU_UP_PREPARE_FROZEN (CPU_UP_PREPARE | CPU_TASKS_FROZEN)
-#define CPU_DEAD_FROZEN (CPU_DEAD | CPU_TASKS_FROZEN)
+/*
+ * These states are not related to the core CPU hotplug mechanism. They are
+ * used by various (sub)architectures to track internal state
+ */
+#define CPU_ONLINE 0x0002 /* CPU is up */
+#define CPU_UP_PREPARE 0x0003 /* CPU coming up */
+#define CPU_DEAD 0x0007 /* CPU dead */
+#define CPU_DEAD_FROZEN 0x0008 /* CPU timed out on unplug */
+#define CPU_POST_DEAD 0x0009 /* CPU successfully unplugged */
+#define CPU_BROKEN 0x000B /* CPU did not die properly */
#ifdef CONFIG_SMP
extern bool cpuhp_tasks_frozen;