diff options
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/smp.h | 1 | ||||
| -rw-r--r-- | arch/s390/kernel/smp.c | 44 |
2 files changed, 22 insertions, 23 deletions
diff --git a/arch/s390/include/asm/smp.h b/arch/s390/include/asm/smp.h index 409830692862..5df26b11cf47 100644 --- a/arch/s390/include/asm/smp.h +++ b/arch/s390/include/asm/smp.h @@ -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 */ diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index 24ad89df7e5f..6f54c175f5c9 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -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) { |