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

From: Sebastian Andrzej Siewior
Date: Tue Aug 03 2021 - 10:17:10 EST


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@xxxxxxxxxxxxxxxx>
Cc: linux-mips@xxxxxxxxxxxxxxx
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
---
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