x86/mtrr: 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.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210803141621.780504-8-bigeasy@linutronix.de

diff --git a/arch/x86/kernel/cpu/mtrr/mtrr.c b/arch/x86/kernel/cpu/mtrr/mtrr.c
index a76694bffe86a43c60e92079f41e1134049d04ed..2746cac9d8a946229031e5d60653dacbb90a4066 100644 (file)
--- a/arch/x86/kernel/cpu/mtrr/mtrr.c
+++ b/arch/x86/kernel/cpu/mtrr/mtrr.c
@@ -336,7 +336,7 @@ int mtrr_add_page(unsigned long base, unsigned long size,
        replace = -1;
 
        /* No CPU hotplug when we change MTRR entries */
-       get_online_cpus();
+       cpus_read_lock();
 
        /* Search for existing MTRR  */
        mutex_lock(&mtrr_mutex);
@@ -398,7 +398,7 @@ int mtrr_add_page(unsigned long base, unsigned long size,
        error = i;
  out:
        mutex_unlock(&mtrr_mutex);
-       put_online_cpus();
+       cpus_read_unlock();
        return error;
 }
 
@@ -485,7 +485,7 @@ int mtrr_del_page(int reg, unsigned long base, unsigned long size)
 
        max = num_var_ranges;
        /* No CPU hotplug when we change MTRR entries */
-       get_online_cpus();
+       cpus_read_lock();
        mutex_lock(&mtrr_mutex);
        if (reg < 0) {
                /*  Search for existing MTRR  */
@@ -520,7 +520,7 @@ int mtrr_del_page(int reg, unsigned long base, unsigned long size)
        error = reg;
  out:
        mutex_unlock(&mtrr_mutex);
-       put_online_cpus();
+       cpus_read_unlock();
        return error;
 }