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Message-ID: <20241030175253.125248-5-longman@redhat.com>
Date: Wed, 30 Oct 2024 13:52:53 -0400
From: Waiman Long <longman@...hat.com>
To: Ingo Molnar <mingo@...hat.com>,
Peter Zijlstra <peterz@...radead.org>,
Juri Lelli <juri.lelli@...hat.com>,
Vincent Guittot <vincent.guittot@...aro.org>,
Dietmar Eggemann <dietmar.eggemann@....com>,
Steven Rostedt <rostedt@...dmis.org>,
Ben Segall <bsegall@...gle.com>,
Mel Gorman <mgorman@...e.de>,
Valentin Schneider <vschneid@...hat.com>,
Frederic Weisbecker <frederic@...nel.org>
Cc: linux-kernel@...r.kernel.org,
Phil Auld <pauld@...hat.com>,
Waiman Long <longman@...hat.com>
Subject: [RESEND PATCH v4 4/4] sched: Unify HK_TYPE_{TIMER|TICK|MISC} to HK_TYPE_KERNEL_NOISE
As all the non-domain and non-managed_irq housekeeping types have been
unified to HK_TYPE_KERNEL_NOISE, replace all these references in the
scheduler to use HK_TYPE_KERNEL_NOISE.
Signed-off-by: Waiman Long <longman@...hat.com>
Acked-by: Frederic Weisbecker <frederic@...nel.org>
---
kernel/sched/core.c | 12 ++++++------
kernel/sched/fair.c | 5 +++--
2 files changed, 9 insertions(+), 8 deletions(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index a7af49b3a337..3412d0046d08 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -1114,13 +1114,13 @@ int get_nohz_timer_target(void)
struct sched_domain *sd;
const struct cpumask *hk_mask;
- if (housekeeping_cpu(cpu, HK_TYPE_TIMER)) {
+ if (housekeeping_cpu(cpu, HK_TYPE_KERNEL_NOISE)) {
if (!idle_cpu(cpu))
return cpu;
default_cpu = cpu;
}
- hk_mask = housekeeping_cpumask(HK_TYPE_TIMER);
+ hk_mask = housekeeping_cpumask(HK_TYPE_KERNEL_NOISE);
guard(rcu)();
@@ -1135,7 +1135,7 @@ int get_nohz_timer_target(void)
}
if (default_cpu == -1)
- default_cpu = housekeeping_any_cpu(HK_TYPE_TIMER);
+ default_cpu = housekeeping_any_cpu(HK_TYPE_KERNEL_NOISE);
return default_cpu;
}
@@ -5526,7 +5526,7 @@ void sched_tick(void)
unsigned long hw_pressure;
u64 resched_latency;
- if (housekeeping_cpu(cpu, HK_TYPE_TICK))
+ if (housekeeping_cpu(cpu, HK_TYPE_KERNEL_NOISE))
arch_scale_freq_tick();
sched_clock_tick();
@@ -5652,7 +5652,7 @@ static void sched_tick_start(int cpu)
int os;
struct tick_work *twork;
- if (housekeeping_cpu(cpu, HK_TYPE_TICK))
+ if (housekeeping_cpu(cpu, HK_TYPE_KERNEL_NOISE))
return;
WARN_ON_ONCE(!tick_work_cpu);
@@ -5673,7 +5673,7 @@ static void sched_tick_stop(int cpu)
struct tick_work *twork;
int os;
- if (housekeeping_cpu(cpu, HK_TYPE_TICK))
+ if (housekeeping_cpu(cpu, HK_TYPE_KERNEL_NOISE))
return;
WARN_ON_ONCE(!tick_work_cpu);
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index f76690c15bfe..08a3d024faf9 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -12208,7 +12208,7 @@ static inline int find_new_ilb(void)
const struct cpumask *hk_mask;
int ilb_cpu;
- hk_mask = housekeeping_cpumask(HK_TYPE_MISC);
+ hk_mask = housekeeping_cpumask(HK_TYPE_KERNEL_NOISE);
for_each_cpu_and(ilb_cpu, nohz.idle_cpus_mask, hk_mask) {
@@ -12226,7 +12226,8 @@ static inline int find_new_ilb(void)
* Kick a CPU to do the NOHZ balancing, if it is time for it, via a cross-CPU
* SMP function call (IPI).
*
- * We pick the first idle CPU in the HK_TYPE_MISC housekeeping set (if there is one).
+ * We pick the first idle CPU in the HK_TYPE_KERNEL_NOISE housekeeping set
+ * (if there is one).
*/
static void kick_ilb(unsigned int flags)
{
--
2.43.5
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