Received-SPF: pass (google.com: domain of linux-kernel+bounces-33861-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.199.223 as permitted sender) client-ip=147.75.199.223;
From: Shrikanth Hegde <sshegde@linux.ibm.com>
To: linux-kernel@vger.kernel.org, linux-ntfs-dev@lists.sourceforge.net,
        linux-xfs@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Cc: sshegde@linux.ibm.com, mpe@ellerman.id.au, mingo@kernel.org,
        peterz@infradead.org, chandan.babu@oracle.com, anton@tuxera.com,
        djwong@kernel.org
Subject: [RFC PATCH v2 1/4] sched: remove duplicate ifdefs
Date: Mon, 22 Jan 2024 23:19:01 +0530
Message-Id: <20240122174904.178594-2-sshegde@linux.ibm.com>
In-Reply-To: <20240122174904.178594-1-sshegde@linux.ibm.com>
References: <20240122174904.178594-1-sshegde@linux.ibm.com>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

when a ifdef is used in the below manner, second one could be considered as
duplicate.

ifdef DEFINE_A
..code block...
ifdef DEFINE_A
..code block...
endif
..code block...
endif

In the scheduler code, there are two places where above pattern can be
observed. Hence second ifdef is a duplicate and not needed.
Plus a minor comment update to reflect the else case.

No functional change is intended here. It only aims to improve code
readability.

Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>
---
 kernel/sched/core.c | 4 +---
 kernel/sched/fair.c | 2 --
 2 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 9116bcc90346..a76c7095f736 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -1792,7 +1792,6 @@ static void cpu_util_update_eff(struct cgroup_subsys_state *css);
 #endif

 #ifdef CONFIG_SYSCTL
-#ifdef CONFIG_UCLAMP_TASK
 #ifdef CONFIG_UCLAMP_TASK_GROUP
 static void uclamp_update_root_tg(void)
 {
@@ -1898,7 +1897,6 @@ static int sysctl_sched_uclamp_handler(struct ctl_table *table, int write,
 	return result;
 }
 #endif
-#endif

 static int uclamp_validate(struct task_struct *p,
 			   const struct sched_attr *attr)
@@ -2065,7 +2063,7 @@ static void __init init_uclamp(void)
 	}
 }

-#else /* CONFIG_UCLAMP_TASK */
+#else /* !CONFIG_UCLAMP_TASK */
 static inline void uclamp_rq_inc(struct rq *rq, struct task_struct *p) { }
 static inline void uclamp_rq_dec(struct rq *rq, struct task_struct *p) { }
 static inline int uclamp_validate(struct task_struct *p,
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 533547e3c90a..8e30e2bb77a0 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -10182,10 +10182,8 @@ static int idle_cpu_without(int cpu, struct task_struct *p)
 	 * be computed and tested before calling idle_cpu_without().
 	 */

-#ifdef CONFIG_SMP
 	if (rq->ttwu_pending)
 		return 0;
-#endif

 	return 1;
 }
--
2.39.3