The patch titled
x86, ia64, smp: use workqueues unconditionally during do_boot_cpu()
has been added to the -mm tree. Its filename is
x86-ia64-smp-use-workqueues-unconditionally-during-do_boot_cpu.patch
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------------------------------------------------------
Subject: x86, ia64, smp: use workqueues unconditionally during do_boot_cpu()
From: Suresh Siddha <suresh.b.siddha@xxxxxxxxx>
Workqueues are now initialized as part of the early_initcall(). So they
are available for use during cold boot process aswell.
Signed-off-by: Suresh Siddha <suresh.b.siddha@xxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Tony Luck <tony.luck@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/ia64/kernel/smpboot.c | 15 ++++++---------
arch/x86/kernel/smpboot.c | 8 ++------
2 files changed, 8 insertions(+), 15 deletions(-)
diff -puN arch/ia64/kernel/smpboot.c~x86-ia64-smp-use-workqueues-unconditionally-during-do_boot_cpu arch/ia64/kernel/smpboot.c
--- a/arch/ia64/kernel/smpboot.c~x86-ia64-smp-use-workqueues-unconditionally-during-do_boot_cpu
+++ a/arch/ia64/kernel/smpboot.c
@@ -508,21 +508,18 @@ do_boot_cpu (int sapicid, int cpu)
.done = COMPLETION_INITIALIZER(c_idle.done),
};
+ /*
+ * We can't use kernel_thread since we must avoid to
+ * reschedule the child.
+ */
c_idle.idle = get_idle_for_cpu(cpu);
if (c_idle.idle) {
init_idle(c_idle.idle, cpu);
goto do_rest;
}
- /*
- * We can't use kernel_thread since we must avoid to reschedule the child.
- */
- if (!keventd_up())
- c_idle.work.func(&c_idle.work);
- else {
- schedule_work(&c_idle.work);
- wait_for_completion(&c_idle.done);
- }
+ schedule_work(&c_idle.work);
+ wait_for_completion(&c_idle.done);
if (IS_ERR(c_idle.idle))
panic("failed fork for CPU %d", cpu);
diff -puN arch/x86/kernel/smpboot.c~x86-ia64-smp-use-workqueues-unconditionally-during-do_boot_cpu arch/x86/kernel/smpboot.c
--- a/arch/x86/kernel/smpboot.c~x86-ia64-smp-use-workqueues-unconditionally-during-do_boot_cpu
+++ a/arch/x86/kernel/smpboot.c
@@ -735,12 +735,8 @@ static int __cpuinit do_boot_cpu(int api
goto do_rest;
}
- if (!keventd_up())
- c_idle.work.func(&c_idle.work);
- else {
- schedule_work(&c_idle.work);
- wait_for_completion(&c_idle.done);
- }
+ schedule_work(&c_idle.work);
+ wait_for_completion(&c_idle.done);
if (IS_ERR(c_idle.idle)) {
printk("failed fork for CPU %d\n", cpu);
_
Patches currently in -mm which might be from suresh.b.siddha@xxxxxxxxx are
linux-next.patch
x86-ia64-smp-use-workqueues-unconditionally-during-do_boot_cpu.patch
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