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authorThomas Gleixner <tglx@linutronix.de>2016-02-26 18:43:28 +0000
committerThomas Gleixner <tglx@linutronix.de>2016-03-01 20:36:54 +0100
commitcff7d378d3fdbb53db9b6e2578b14855f401cd41 (patch)
tree2a81d3627fa3bd7397f89e0998c2cf4141f2e8a4 /init
parent5ba9ac8e2c45ab165e5b4a246f4821d319656e9d (diff)
downloadlinux-stericsson-cff7d378d3fdbb53db9b6e2578b14855f401cd41.tar.gz
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 'init')
-rw-r--r--init/main.c15
1 files changed, 1 insertions, 14 deletions
diff --git a/init/main.c b/init/main.c
index 58c9e374704b..c2ea72362ee3 100644
--- a/init/main.c
+++ b/init/main.c
@@ -452,20 +452,6 @@ void __init parse_early_param(void)
done = 1;
}
-/*
- * Activate the first processor.
- */
-
-static void __init boot_cpu_init(void)
-{
- int cpu = smp_processor_id();
- /* Mark the boot cpu "present", "online" etc for SMP and UP case */
- set_cpu_online(cpu, true);
- set_cpu_active(cpu, true);
- set_cpu_present(cpu, true);
- set_cpu_possible(cpu, true);
-}
-
void __init __weak smp_setup_processor_id(void)
{
}
@@ -530,6 +516,7 @@ asmlinkage __visible void __init start_kernel(void)
setup_command_line(command_line);
setup_nr_cpu_ids();
setup_per_cpu_areas();
+ boot_cpu_state_init();
smp_prepare_boot_cpu(); /* arch-specific boot-cpu hooks */
build_all_zonelists(NULL, NULL);