linux-kernel - [RFC 37/60] cosched: Use hrq_of() for (indirect calls to) ___update_load

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Date:   Fri,  7 Sep 2018 23:40:24 +0200
From:   Jan H. Schönherr <jschoenh@...zon.de>
To:     Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     Jan H. Schönherr <jschoenh@...zon.de>,
        linux-kernel@...r.kernel.org
Subject: [RFC 37/60] cosched: Use hrq_of() for (indirect calls to) ___update_load_sum()

The cpu argument supplied to all callers of ___update_load_sum() is used
in accumulate_sum() to scale load values according to the CPU capacity.
While we should think about that at some point, it is out-of-scope for now.
Also, it does not matter on homogeneous system topologies.

Update all callers to use hrq_of() instead of rq_of() to derive the cpu
argument.

Signed-off-by: Jan H. Schönherr <jschoenh@...zon.de>
---
 kernel/sched/fair.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index fde1c4ba4bb4..a2945355f823 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -3114,7 +3114,7 @@ void set_task_rq_fair(struct sched_entity *se,
 	p_last_update_time = prev->avg.last_update_time;
 	n_last_update_time = next->avg.last_update_time;
 #endif
-	__update_load_avg_blocked_se(p_last_update_time, cpu_of(rq_of(prev)), se);
+	__update_load_avg_blocked_se(p_last_update_time, cpu_of(hrq_of(prev)), se);
 	se->avg.last_update_time = n_last_update_time;
 }
 
@@ -3397,7 +3397,7 @@ update_cfs_rq_load_avg(u64 now, struct cfs_rq *cfs_rq)
 		decayed = 1;
 	}
 
-	decayed |= __update_load_avg_cfs_rq(now, cpu_of(rq_of(cfs_rq)), cfs_rq);
+	decayed |= __update_load_avg_cfs_rq(now, cpu_of(hrq_of(cfs_rq)), cfs_rq);
 
 #ifndef CONFIG_64BIT
 	smp_wmb();
@@ -3487,7 +3487,7 @@ static void detach_entity_load_avg(struct cfs_rq *cfs_rq, struct sched_entity *s
 static inline void update_load_avg(struct cfs_rq *cfs_rq, struct sched_entity *se, int flags)
 {
 	u64 now = cfs_rq_clock_task(cfs_rq);
-	struct rq *rq = rq_of(cfs_rq);
+	struct rq *rq = hrq_of(cfs_rq);
 	int cpu = cpu_of(rq);
 	int decayed;
 
@@ -3548,7 +3548,7 @@ void sync_entity_load_avg(struct sched_entity *se)
 	u64 last_update_time;
 
 	last_update_time = cfs_rq_last_update_time(cfs_rq);
-	__update_load_avg_blocked_se(last_update_time, cpu_of(rq_of(cfs_rq)), se);
+	__update_load_avg_blocked_se(last_update_time, cpu_of(hrq_of(cfs_rq)), se);
 }
 
 /*
-- 
2.9.3.1.gcba166c.dirty