s390/ctlreg: add local and system prefix to some functions

Add local and system prefix to some functions to clarify they change
control register contents on either the local CPU or the on all CPUs.

This results in the following API:

Two defines which load and save multiple control registers.
The defines correlate with the following C prototypes:

void __local_ctl_load(unsigned long *, unsigned int cr_low, unsigned int cr_high);
void __local_ctl_store(unsigned long *, unsigned int cr_low, unsigned int cr_high);

Two functions which locally set or clear one bit for a specified
control register:

void local_ctl_set_bit(unsigned int cr, unsigned int bit);
void local_ctl_clear_bit(unsigned int cr, unsigned int bit);

Two functions which set or clear one bit for a specified control
register on all CPUs:

void system_ctl_set_bit(unsigned int cr, unsigned int bit);
void system_ctl_clear_bit(unsigend int cr, unsigned int bit);

Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

4 files changed, 9 insertions, 9 deletions

diff --git a/drivers/s390/char/sclp.c b/drivers/s390/char/sclp.c
index 8f74db689a0c..1ebc60d9cedc 100644
--- a/drivers/s390/char/sclp.c
+++ b/drivers/s390/char/sclp.c
@@ -732,10 +732,10 @@ sclp_sync_wait(void)
 	/* Enable service-signal interruption, disable timer interrupts */
 	old_tick = local_tick_disable();
 	trace_hardirqs_on();
-	__ctl_store(cr0, 0, 0);
+	__local_ctl_store(cr0, 0, 0);
 	cr0_sync = cr0 & ~CR0_IRQ_SUBCLASS_MASK;
 	cr0_sync |= 1UL << (63 - 54);
-	__ctl_load(cr0_sync, 0, 0);
+	__local_ctl_load(cr0_sync, 0, 0);
 	__arch_local_irq_stosm(0x01);
 	/* Loop until driver state indicates finished request */
 	while (sclp_running_state != sclp_running_state_idle) {
@@ -745,7 +745,7 @@ sclp_sync_wait(void)
 		cpu_relax();
 	}
 	local_irq_disable();
-	__ctl_load(cr0, 0, 0);
+	__local_ctl_load(cr0, 0, 0);
 	if (!irq_context)
 		_local_bh_enable();
 	local_tick_enable(old_tick);
diff --git a/drivers/s390/char/sclp_early_core.c b/drivers/s390/char/sclp_early_core.c
index f7067a70c461..fa5b7d63a254 100644
--- a/drivers/s390/char/sclp_early_core.c
+++ b/drivers/s390/char/sclp_early_core.c
@@ -32,11 +32,11 @@ void sclp_early_wait_irq(void)
 	psw_t psw_ext_save, psw_wait;
 	union ctlreg0 cr0, cr0_new;
 
-	__ctl_store(cr0.val, 0, 0);
+	__local_ctl_store(cr0.val, 0, 0);
 	cr0_new.val = cr0.val & ~CR0_IRQ_SUBCLASS_MASK;
 	cr0_new.lap = 0;
 	cr0_new.sssm = 1;
-	__ctl_load(cr0_new.val, 0, 0);
+	__local_ctl_load(cr0_new.val, 0, 0);
 
 	psw_ext_save = S390_lowcore.external_new_psw;
 	psw_mask = __extract_psw();
@@ -59,7 +59,7 @@ void sclp_early_wait_irq(void)
 	} while (S390_lowcore.ext_int_code != EXT_IRQ_SERVICE_SIG);
 
 	S390_lowcore.external_new_psw = psw_ext_save;
-	__ctl_load(cr0.val, 0, 0);
+	__local_ctl_load(cr0.val, 0, 0);
 }
 
 int sclp_early_cmd(sclp_cmdw_t cmd, void *sccb)
diff --git a/drivers/s390/cio/crw.c b/drivers/s390/cio/crw.c
index 58f22270d9c4..872b1f2855cb 100644
--- a/drivers/s390/cio/crw.c
+++ b/drivers/s390/cio/crw.c
@@ -156,7 +156,7 @@ static int __init crw_machine_check_init(void)
 	task = kthread_run(crw_collect_info, NULL, "kmcheck");
 	if (IS_ERR(task))
 		return PTR_ERR(task);
-	ctl_set_bit(14, 28);	/* enable channel report MCH */
+	system_ctl_set_bit(14, 28);	/* enable channel report MCH */
 	return 0;
 }
 device_initcall(crw_machine_check_init);
diff --git a/drivers/s390/cio/isc.c b/drivers/s390/cio/isc.c
index 77fde9f5ea8b..dbc2ac7711e5 100644
--- a/drivers/s390/cio/isc.c
+++ b/drivers/s390/cio/isc.c
@@ -33,7 +33,7 @@ void isc_register(unsigned int isc)
 
 	spin_lock(&isc_ref_lock);
 	if (isc_refs[isc] == 0)
-		ctl_set_bit(6, 31 - isc);
+		system_ctl_set_bit(6, 31 - isc);
 	isc_refs[isc]++;
 	spin_unlock(&isc_ref_lock);
 }
@@ -61,7 +61,7 @@ void isc_unregister(unsigned int isc)
 		goto out_unlock;
 	}
 	if (isc_refs[isc] == 1)
-		ctl_clear_bit(6, 31 - isc);
+		system_ctl_clear_bit(6, 31 - isc);
 	isc_refs[isc]--;
 out_unlock:
 	spin_unlock(&isc_ref_lock);