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authorThomas Gleixner <tglx@linutronix.de>2016-02-26 21:43:28 +0300
committerThomas Gleixner <tglx@linutronix.de>2016-03-01 22:36:54 +0300
commitcff7d378d3fdbb53db9b6e2578b14855f401cd41 (patch)
tree2a81d3627fa3bd7397f89e0998c2cf4141f2e8a4 /include/linux/cpu.h
parent5ba9ac8e2c45ab165e5b4a246f4821d319656e9d (diff)
downloadlinux-cff7d378d3fdbb53db9b6e2578b14855f401cd41.tar.xz
cpu/hotplug: Convert to a state machine for the control processor
Move the split out steps into a callback array and let the cpu_up/down code iterate through the array functions. For now most of the callbacks are asymmetric to resemble the current hotplug maze. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: linux-arch@vger.kernel.org Cc: Rik van Riel <riel@redhat.com> Cc: Rafael Wysocki <rafael.j.wysocki@intel.com> Cc: "Srivatsa S. Bhat" <srivatsa@mit.edu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Tejun Heo <tj@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul Turner <pjt@google.com> Link: http://lkml.kernel.org/r/20160226182340.671816690@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/cpu.h')
-rw-r--r--include/linux/cpu.h9
1 files changed, 4 insertions, 5 deletions
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index f2fb54938ee6..78989f20420f 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -16,6 +16,7 @@
#include <linux/node.h>
#include <linux/compiler.h>
#include <linux/cpumask.h>
+#include <linux/cpuhotplug.h>
struct device;
struct device_node;
@@ -27,6 +28,9 @@ struct cpu {
struct device dev;
};
+extern void boot_cpu_init(void);
+extern void boot_cpu_state_init(void);
+
extern int register_cpu(struct cpu *cpu, int num);
extern struct device *get_cpu_device(unsigned cpu);
extern bool cpu_is_hotpluggable(unsigned cpu);
@@ -267,11 +271,6 @@ static inline int disable_nonboot_cpus(void) { return 0; }
static inline void enable_nonboot_cpus(void) {}
#endif /* !CONFIG_PM_SLEEP_SMP */
-enum cpuhp_state {
- CPUHP_OFFLINE,
- CPUHP_ONLINE,
-};
-
void cpu_startup_entry(enum cpuhp_state state);
void cpu_idle_poll_ctrl(bool enable);