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s390: enforce CONFIG_SMP

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There never have been distributions that shiped with CONFIG_SMP=n for
s390. In addition the kernel currently doesn't even compile with
CONFIG_SMP=n for s390. Most likely it wouldn't even work, even if we
fix the compile error, since nobody tests it, since there is no use
case that I can think of.
Therefore simply enforce CONFIG_SMP and get rid of some more or
less unused code.

Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
This commit is contained in:
Heiko Carstens
2019-06-03 14:25:18 +02:00
parent 753469a23b
commit 67626fadd2
12 changed files with 7 additions and 95 deletions
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30
arch/s390/include/asm/smp.h
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@@ -9,9 +9,6 @@
#define __ASM_SMP_H
#include <asm/sigp.h>
#ifdef CONFIG_SMP
#include <asm/lowcore.h>
#define raw_smp_processor_id() (S390_lowcore.cpu_nr)
@@ -40,33 +37,6 @@ extern int smp_cpu_get_polarization(int cpu);
extern void smp_fill_possible_mask(void);
extern void smp_detect_cpus(void);
#else /* CONFIG_SMP */
#define smp_cpu_mtid 0
static inline void smp_call_ipl_cpu(void (*func)(void *), void *data)
{
func(data);
}
static inline void smp_call_online_cpu(void (*func)(void *), void *data)
{
func(data);
}
static inline void smp_emergency_stop(void)
{
}
static inline int smp_find_processor_id(u16 address) { return 0; }
static inline int smp_store_status(int cpu) { return 0; }
static inline int smp_vcpu_scheduled(int cpu) { return 1; }
static inline void smp_yield_cpu(int cpu) { }
static inline void smp_fill_possible_mask(void) { }
static inline void smp_detect_cpus(void) { }
#endif /* CONFIG_SMP */
static inline void smp_stop_cpu(void)
{
u16 pcpu = stap();