sched/balancing: Rename run_rebalance_domains() => sched_balance_softirq()

run_rebalance_domains() is a misnomer, as it doesn't only
run rebalance_domains(), but since the introduction of the
NOHZ code it also runs nohz_idle_balance().

Rename it to sched_balance_softirq(), reflecting its more
generic purpose and that it's a softirq handler.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Valentin Schneider <vschneid@redhat.com>
Reviewed-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Link: https://lore.kernel.org/r/20240308111819.1101550-2-mingo@kernel.org

diff --git a/Documentation/scheduler/sched-domains.rst b/Documentation/scheduler/sched-domains.rst
index e57ad28301bde983d583436eb055ed4703567fa1..6577b068f9215c7cb9ae21303a0ec28a94120fc3 100644 (file)
--- a/Documentation/scheduler/sched-domains.rst
+++ b/Documentation/scheduler/sched-domains.rst
@@ -34,7 +34,7 @@ out of balance are tasks moved between groups.
 In kernel/sched/core.c, trigger_load_balance() is run periodically on each CPU
 through scheduler_tick(). It raises a softirq after the next regularly scheduled
 rebalancing event for the current runqueue has arrived. The actual load
-balancing workhorse, run_rebalance_domains()->rebalance_domains(), is then run
+balancing workhorse, sched_balance_softirq()->rebalance_domains(), is then run
 in softirq context (SCHED_SOFTIRQ).
 
 The latter function takes two arguments: the runqueue of current CPU and whether

diff --git a/Documentation/translations/zh_CN/scheduler/sched-domains.rst b/Documentation/translations/zh_CN/scheduler/sched-domains.rst
index e814d4c0114194331ab59d0067b0f83666701d20..fbc326668e37799bbb203c34f9d2f4d02705312a 100644 (file)
--- a/Documentation/translations/zh_CN/scheduler/sched-domains.rst
+++ b/Documentation/translations/zh_CN/scheduler/sched-domains.rst
@@ -36,7 +36,7 @@ CPU共享。任意两个组的CPU掩码的交集不一定为空，如果是这
 
 在kernel/sched/core.c中，trigger_load_balance()在每个CPU上通过scheduler_tick()
 周期执行。在当前运行队列下一个定期调度再平衡事件到达后，它引发一个软中断。负载均衡真正
-的工作由run_rebalance_domains()->rebalance_domains()完成，在软中断上下文中执行
+的工作由sched_balance_softirq()->rebalance_domains()完成，在软中断上下文中执行
 （SCHED_SOFTIRQ）。
 
 后一个函数有两个入参：当前CPU的运行队列、它在scheduler_tick()调用时是否空闲。函数会从

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 116a640534b9efc1b5d3eb73ceffea1a101d4353..953f39deb68e50bed1088664cba49cb7aa814a4a 100644 (file)
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -12415,7 +12415,7 @@ out:
  * - indirectly from a remote scheduler_tick() for NOHZ idle balancing
  *   through the SMP cross-call nohz_csd_func()
  */
-static __latent_entropy void run_rebalance_domains(struct softirq_action *h)
+static __latent_entropy void sched_balance_softirq(struct softirq_action *h)
 {
        struct rq *this_rq = this_rq();
        enum cpu_idle_type idle = this_rq->idle_balance;
@@ -13216,7 +13216,7 @@ __init void init_sched_fair_class(void)
 #endif
        }
 
-       open_softirq(SCHED_SOFTIRQ, run_rebalance_domains);
+       open_softirq(SCHED_SOFTIRQ, sched_balance_softirq);
 
 #ifdef CONFIG_NO_HZ_COMMON
        nohz.next_balance = jiffies;