linux-kernel - [tip: sched/core] sched/eevdf: Remove min_vruntime

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Message-ID: <172396219227.2215.14819251232834033002.tip-bot2@tip-bot2>
Date: Sun, 18 Aug 2024 06:23:12 -0000
From: "tip-bot2 for Peter Zijlstra" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: "Peter Zijlstra (Intel)" <peterz@...radead.org>,
 Valentin Schneider <vschneid@...hat.com>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: sched/core] sched/eevdf: Remove min_vruntime_copy

The following commit has been merged into the sched/core branch of tip:

Commit-ID:     949090eaf0a3e39aa0f4a675407e16d0e975da11
Gitweb:        https://git.kernel.org/tip/949090eaf0a3e39aa0f4a675407e16d0e975da11
Author:        Peter Zijlstra <peterz@...radead.org>
AuthorDate:    Wed, 04 Oct 2023 12:43:53 +02:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Sat, 17 Aug 2024 11:06:40 +02:00

sched/eevdf: Remove min_vruntime_copy

Since commit e8f331bcc270 ("sched/smp: Use lag to simplify
cross-runqueue placement") the min_vruntime_copy is no longer used.

Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Reviewed-by: Valentin Schneider <vschneid@...hat.com>
Tested-by: Valentin Schneider <vschneid@...hat.com>
Link: https://lkml.kernel.org/r/20240727105028.395297941@infradead.org
---
 kernel/sched/fair.c  | 5 ++---
 kernel/sched/sched.h | 4 ----
 2 files changed, 2 insertions(+), 7 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 6d39a82..8201f0f 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -779,8 +779,7 @@ static void update_min_vruntime(struct cfs_rq *cfs_rq)
 	}
 
 	/* ensure we never gain time by being placed backwards. */
-	u64_u32_store(cfs_rq->min_vruntime,
-		      __update_min_vruntime(cfs_rq, vruntime));
+	cfs_rq->min_vruntime = __update_min_vruntime(cfs_rq, vruntime);
 }
 
 static inline bool __entity_less(struct rb_node *a, const struct rb_node *b)
@@ -12933,7 +12932,7 @@ static void set_next_task_fair(struct rq *rq, struct task_struct *p, bool first)
 void init_cfs_rq(struct cfs_rq *cfs_rq)
 {
 	cfs_rq->tasks_timeline = RB_ROOT_CACHED;
-	u64_u32_store(cfs_rq->min_vruntime, (u64)(-(1LL << 20)));
+	cfs_rq->min_vruntime = (u64)(-(1LL << 20));
 #ifdef CONFIG_SMP
 	raw_spin_lock_init(&cfs_rq->removed.lock);
 #endif
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 1e1d1b4..a6d6b6f 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -613,10 +613,6 @@ struct cfs_rq {
 	u64			min_vruntime_fi;
 #endif
 
-#ifndef CONFIG_64BIT
-	u64			min_vruntime_copy;
-#endif
-
 	struct rb_root_cached	tasks_timeline;
 
 	/*