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sched/isolation: Move housekeeping related code to its own file

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The housekeeping code is currently tied to the NOHZ code. As we are
planning to make housekeeping independent from it, start with moving
the relevant code to its own file.

Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Wanpeng Li <kernellwp@gmail.com>
Link: http://lkml.kernel.org/r/1509072159-31808-2-git-send-email-frederic@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Frederic Weisbecker
2017-10-27 04:42:28 +02:00
committed by Ingo Molnar
parent 54b933c6c9
commit 7863406143
12 changed files with 98 additions and 56 deletions
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18
kernel/time/tick-sched.c
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@@ -166,7 +166,6 @@ static void tick_sched_handle(struct tick_sched *ts, struct pt_regs *regs)
#ifdef CONFIG_NO_HZ_FULL
cpumask_var_t tick_nohz_full_mask;
cpumask_var_t housekeeping_mask;
bool tick_nohz_full_running;
static atomic_t tick_dep_mask;
@@ -438,13 +437,6 @@ void __init tick_nohz_init(void)
return;
}
if (!alloc_cpumask_var(&housekeeping_mask, GFP_KERNEL)) {
WARN(1, "NO_HZ: Can't allocate not-full dynticks cpumask\n");
cpumask_clear(tick_nohz_full_mask);
tick_nohz_full_running = false;
return;
}
/*
* Full dynticks uses irq work to drive the tick rescheduling on safe
* locking contexts. But then we need irq work to raise its own
@@ -453,7 +445,6 @@ void __init tick_nohz_init(void)
if (!arch_irq_work_has_interrupt()) {
pr_warn("NO_HZ: Can't run full dynticks because arch doesn't support irq work self-IPIs\n");
cpumask_clear(tick_nohz_full_mask);
cpumask_copy(housekeeping_mask, cpu_possible_mask);
tick_nohz_full_running = false;
return;
}
@@ -466,9 +457,6 @@ void __init tick_nohz_init(void)
cpumask_clear_cpu(cpu, tick_nohz_full_mask);
}
cpumask_andnot(housekeeping_mask,
cpu_possible_mask, tick_nohz_full_mask);
for_each_cpu(cpu, tick_nohz_full_mask)
context_tracking_cpu_set(cpu);
@@ -478,12 +466,6 @@ void __init tick_nohz_init(void)
WARN_ON(ret < 0);
pr_info("NO_HZ: Full dynticks CPUs: %*pbl.\n",
cpumask_pr_args(tick_nohz_full_mask));
/*
* We need at least one CPU to handle housekeeping work such
* as timekeeping, unbound timers, workqueues, ...
*/
WARN_ON_ONCE(cpumask_empty(housekeeping_mask));
}
#endif