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s390/kdump: fix compile for !SMP

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Fix this compile error:

arch/s390/kernel/setup.c:875:2: error:
 implicit declaration of function 'smp_save_dump_cpus'

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2015-06-26 12:10:49 +02:00 committed by Martin Schwidefsky
parent 1592a8e456
commit 1af135a1e7
2 changed files with 22 additions and 23 deletions
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1
arch/s390/include/asm/smp.h
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@ -55,6 +55,7 @@ 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_save_dump_cpus(void) { }
#endif /* CONFIG_SMP */

44
arch/s390/kernel/smp.c
View file

@ -560,6 +560,25 @@ static void __smp_store_cpu_state(struct save_area_ext *sa_ext, u16 address,
memblock_free(vx_sa, PAGE_SIZE);
}
int smp_store_status(int cpu)
{
unsigned long vx_sa;
struct pcpu *pcpu;
pcpu = pcpu_devices + cpu;
if (__pcpu_sigp_relax(pcpu->address, SIGP_STOP_AND_STORE_STATUS,
0, NULL) != SIGP_CC_ORDER_CODE_ACCEPTED)
return -EIO;
if (!MACHINE_HAS_VX)
return 0;
vx_sa = __pa(pcpu->lowcore->vector_save_area_addr);
__pcpu_sigp_relax(pcpu->address, SIGP_STORE_ADDITIONAL_STATUS,
vx_sa, NULL);
return 0;
}
#endif /* CONFIG_CRASH_DUMP */
/*
* Collect CPU state of the previous, crashed system.
* There are four cases:
@ -589,6 +608,7 @@ static void __smp_store_cpu_state(struct save_area_ext *sa_ext, u16 address,
*/
void __init smp_save_dump_cpus(void)
{
#ifdef CONFIG_CRASH_DUMP
int addr, cpu, boot_cpu_addr, max_cpu_addr;
struct save_area_ext *sa_ext;
bool is_boot_cpu;
@ -629,30 +649,8 @@ void __init smp_save_dump_cpus(void)
}
diag308_reset();
pcpu_set_smt(0);
}
int smp_store_status(int cpu)
{
unsigned long vx_sa;
struct pcpu *pcpu;
pcpu = pcpu_devices + cpu;
if (__pcpu_sigp_relax(pcpu->address, SIGP_STOP_AND_STORE_STATUS,
0, NULL) != SIGP_CC_ORDER_CODE_ACCEPTED)
return -EIO;
if (!MACHINE_HAS_VX)
return 0;
vx_sa = __pa(pcpu->lowcore->vector_save_area_addr);
__pcpu_sigp_relax(pcpu->address, SIGP_STORE_ADDITIONAL_STATUS,
vx_sa, NULL);
return 0;
}
#else
void smp_save_dump_cpus(void)
{
}
#endif /* CONFIG_CRASH_DUMP */
}
void smp_cpu_set_polarization(int cpu, int val)
{