diff options
| author | Heiko Carstens <hca@linux.ibm.com> | 2023-09-11 21:39:58 +0200 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2023-09-19 13:26:56 +0200 |
| commit | 8d5e98f8d6b11dd0e61323ece3b7ccceea55c281 (patch) | |
| tree | 7e0ff091fc8130648550fc2dfb147df93b8960af /arch/s390/kernel/smp.c | |
| parent | a74e4fc168d284e1e4e7296f8cf4b884035ebd45 (diff) | |
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>
Diffstat (limited to 'arch/s390/kernel/smp.c')
| -rw-r--r-- | arch/s390/kernel/smp.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index 204c72428696..1c65bbd411c7 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -888,14 +888,14 @@ int __cpu_up(unsigned int cpu, struct task_struct *tidle) * Make sure global control register contents do not change * until new CPU has initialized control registers. */ - ctlreg_lock(); + system_ctlreg_lock(); pcpu_prepare_secondary(pcpu, cpu); pcpu_attach_task(pcpu, tidle); pcpu_start_fn(pcpu, smp_start_secondary, NULL); /* Wait until cpu puts itself in the online & active maps */ while (!cpu_online(cpu)) cpu_relax(); - ctlreg_unlock(); + system_ctlreg_unlock(); return 0; } @@ -922,11 +922,11 @@ int __cpu_disable(void) /* Disable pseudo page faults on this cpu. */ pfault_fini(); /* Disable interrupt sources via control register. */ - __ctl_store(cregs, 0, 15); + __local_ctl_store(cregs, 0, 15); cregs[0] &= ~0x0000ee70UL; /* disable all external interrupts */ cregs[6] &= ~0xff000000UL; /* disable all I/O interrupts */ cregs[14] &= ~0x1f000000UL; /* disable most machine checks */ - __ctl_load(cregs, 0, 15); + __local_ctl_load(cregs, 0, 15); clear_cpu_flag(CIF_NOHZ_DELAY); return 0; } @@ -968,10 +968,10 @@ void __init smp_prepare_cpus(unsigned int max_cpus) { if (register_external_irq(EXT_IRQ_EMERGENCY_SIG, do_ext_call_interrupt)) panic("Couldn't request external interrupt 0x1201"); - ctl_set_bit(0, 14); + system_ctl_set_bit(0, 14); if (register_external_irq(EXT_IRQ_EXTERNAL_CALL, do_ext_call_interrupt)) panic("Couldn't request external interrupt 0x1202"); - ctl_set_bit(0, 13); + system_ctl_set_bit(0, 13); } void __init smp_prepare_boot_cpu(void) |