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workqueue: mark init_workqueues() as early_initcall()
Mark init_workqueues() as early_initcall() and thus it will be initialized before smp bringup. init_workqueues() registers for the hotcpu notifier and thus it should cope with the processors that are brought online after the workqueues are initialized. x86 smp bringup code uses workqueues and uses a workaround for the cold boot process (as the workqueues are initialized post smp_init()). Marking init_workqueues() as early_initcall() will pave the way for cleaning up this code. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org>
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@ -327,7 +327,6 @@ extern int schedule_delayed_work_on(int cpu, struct delayed_work *work,
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extern int schedule_on_each_cpu(work_func_t func);
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extern int keventd_up(void);
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extern void init_workqueues(void);
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int execute_in_process_context(work_func_t fn, struct execute_work *);
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extern int flush_work(struct work_struct *work);
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@ -32,7 +32,6 @@
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#include <linux/start_kernel.h>
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#include <linux/security.h>
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#include <linux/smp.h>
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#include <linux/workqueue.h>
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#include <linux/profile.h>
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#include <linux/rcupdate.h>
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#include <linux/moduleparam.h>
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@ -786,7 +785,6 @@ static void __init do_initcalls(void)
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*/
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static void __init do_basic_setup(void)
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{
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init_workqueues();
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cpuset_init_smp();
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usermodehelper_init();
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init_tmpfs();
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@ -3507,7 +3507,7 @@ void thaw_workqueues(void)
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}
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#endif /* CONFIG_FREEZER */
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void __init init_workqueues(void)
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static int __init init_workqueues(void)
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{
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unsigned int cpu;
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int i;
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@ -3559,4 +3559,6 @@ void __init init_workqueues(void)
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system_unbound_wq = alloc_workqueue("events_unbound", WQ_UNBOUND,
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WQ_UNBOUND_MAX_ACTIVE);
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BUG_ON(!system_wq || !system_long_wq || !system_nrt_wq);
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return 0;
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}
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early_initcall(init_workqueues);
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