linux-kernel - [PATCH 02/38] MIPS: Replace deprecated CPU-hotplug functions.

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Message-Id: <20210803141621.780504-3-bigeasy@linutronix.de>
Date:   Tue,  3 Aug 2021 16:15:45 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     linux-kernel@...r.kernel.org
Cc:     tglx@...utronix.de, Peter Zijlstra <peterz@...radead.org>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        linux-mips@...r.kernel.org
Subject: [PATCH 02/38] MIPS: Replace deprecated CPU-hotplug functions.

The functions get_online_cpus() and put_online_cpus() have been
deprecated during the CPU hotplug rework. They map directly to
cpus_read_lock() and cpus_read_unlock().

Replace deprecated CPU-hotplug functions with the official version.
The behavior remains unchanged.

Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: linux-mips@...r.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
---
 arch/mips/kernel/mips-mt-fpaff.c | 10 +++++-----
 arch/mips/kernel/process.c       |  4 ++--
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/arch/mips/kernel/mips-mt-fpaff.c b/arch/mips/kernel/mips-mt-fpaff.c
index 6c590ef276482..67e130d3f0385 100644
--- a/arch/mips/kernel/mips-mt-fpaff.c
+++ b/arch/mips/kernel/mips-mt-fpaff.c
@@ -76,13 +76,13 @@ asmlinkage long mipsmt_sys_sched_setaffinity(pid_t pid, unsigned int len,
 	if (copy_from_user(&new_mask, user_mask_ptr, sizeof(new_mask)))
 		return -EFAULT;
 
-	get_online_cpus();
+	cpus_read_lock();
 	rcu_read_lock();
 
 	p = find_process_by_pid(pid);
 	if (!p) {
 		rcu_read_unlock();
-		put_online_cpus();
+		cpus_read_unlock();
 		return -ESRCH;
 	}
 
@@ -147,7 +147,7 @@ asmlinkage long mipsmt_sys_sched_setaffinity(pid_t pid, unsigned int len,
 	free_cpumask_var(cpus_allowed);
 out_put_task:
 	put_task_struct(p);
-	put_online_cpus();
+	cpus_read_unlock();
 	return retval;
 }
 
@@ -166,7 +166,7 @@ asmlinkage long mipsmt_sys_sched_getaffinity(pid_t pid, unsigned int len,
 	if (len < real_len)
 		return -EINVAL;
 
-	get_online_cpus();
+	cpus_read_lock();
 	rcu_read_lock();
 
 	retval = -ESRCH;
@@ -182,7 +182,7 @@ asmlinkage long mipsmt_sys_sched_getaffinity(pid_t pid, unsigned int len,
 
 out_unlock:
 	rcu_read_unlock();
-	put_online_cpus();
+	cpus_read_unlock();
 	if (retval)
 		return retval;
 	if (copy_to_user(user_mask_ptr, &mask, real_len))
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index 73c8e7990a973..95aa86fa60778 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -859,10 +859,10 @@ int mips_set_process_fp_mode(struct task_struct *task, unsigned int value)
 	 * scheduled in then it will already have picked up the new FP mode
 	 * whilst doing so.
 	 */
-	get_online_cpus();
+	cpus_read_lock();
 	for_each_cpu_and(cpu, &process_cpus, cpu_online_mask)
 		work_on_cpu(cpu, prepare_for_fp_mode_switch, NULL);
-	put_online_cpus();
+	cpus_read_unlock();
 
 	return 0;
 }
-- 
2.32.0