[PATCH 27/38] padata: Replace deprecated CPU-hotplug functions.

From: Sebastian Andrzej Siewior
Date: Tue Aug 03 2021 - 10:18:43 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: Steffen Klassert <steffen.klassert@xxxxxxxxxxx>
Cc: Daniel Jordan <daniel.m.jordan@xxxxxxxxxx>
Cc: linux-crypto@xxxxxxxxxxxxxxx
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
---
kernel/padata.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/kernel/padata.c b/kernel/padata.c
index d4d3ba6e1728a..0b0b6e8917d10 100644
--- a/kernel/padata.c
+++ b/kernel/padata.c
@@ -733,7 +733,7 @@ int padata_set_cpumask(struct padata_instance *pinst, int cpumask_type,
struct cpumask *serial_mask, *parallel_mask;
int err = -EINVAL;

- get_online_cpus();
+ cpus_read_lock();
mutex_lock(&pinst->lock);

switch (cpumask_type) {
@@ -753,7 +753,7 @@ int padata_set_cpumask(struct padata_instance *pinst, int cpumask_type,

out:
mutex_unlock(&pinst->lock);
- put_online_cpus();
+ cpus_read_unlock();

return err;
}
@@ -992,7 +992,7 @@ struct padata_instance *padata_alloc(const char *name)
if (!pinst->parallel_wq)
goto err_free_inst;

- get_online_cpus();
+ cpus_read_lock();

pinst->serial_wq = alloc_workqueue("%s_serial", WQ_MEM_RECLAIM |
WQ_CPU_INTENSIVE, 1, name);
@@ -1026,7 +1026,7 @@ struct padata_instance *padata_alloc(const char *name)
&pinst->cpu_dead_node);
#endif

- put_online_cpus();
+ cpus_read_unlock();

return pinst;

@@ -1036,7 +1036,7 @@ struct padata_instance *padata_alloc(const char *name)
err_free_serial_wq:
destroy_workqueue(pinst->serial_wq);
err_put_cpus:
- put_online_cpus();
+ cpus_read_unlock();
destroy_workqueue(pinst->parallel_wq);
err_free_inst:
kfree(pinst);
@@ -1074,9 +1074,9 @@ struct padata_shell *padata_alloc_shell(struct padata_instance *pinst)

ps->pinst = pinst;

- get_online_cpus();
+ cpus_read_lock();
pd = padata_alloc_pd(ps);
- put_online_cpus();
+ cpus_read_unlock();

if (!pd)
goto out_free_ps;
--
2.32.0