/*
* Create ELF notes for one CPU
*/
static void add_elf_notes(int cpu)
{
struct save_area *sa = (void *) 4608 + store_prefix();
void *ptr;
memcpy((void *) (4608UL + sa->pref_reg), sa, sizeof(*sa));
ptr = (u64 *) per_cpu_ptr(crash_notes, cpu);
ptr = fill_cpu_elf_notes(ptr, sa);
memset(ptr, 0, sizeof(struct elf_note));
}
static void __init smp_get_save_area(unsigned int cpu, unsigned int phy_cpu)
{
if (ipl_info.type != IPL_TYPE_FCP_DUMP)
return;
if (cpu >= NR_CPUS) {
pr_warning("CPU %i exceeds the maximum %i and is excluded from "
"the dump\n", cpu, NR_CPUS - 1);
return;
}
zfcpdump_save_areas[cpu] = kmalloc(sizeof(struct save_area), GFP_KERNEL);
while (raw_sigp(phy_cpu, sigp_stop_and_store_status) == sigp_busy)
cpu_relax();
memcpy_real(zfcpdump_save_areas[cpu],
(void *)(unsigned long) store_prefix() + SAVE_AREA_BASE,
sizeof(struct save_area));
}
/*
* Store status of next available physical CPU
*/
static int store_status_next(int start_cpu, int this_cpu)
{
struct save_area_s390x *sa = (void *) 4608 + store_prefix();
int cpu, rc;
for (cpu = start_cpu; cpu < 65536; cpu++) {
if (cpu == this_cpu)
continue;
do {
rc = raw_sigp(cpu, sigp_stop_and_store_status);
} while (rc == sigp_busy);
if (rc != sigp_order_code_accepted)
continue;
if (sa->pref_reg)
return cpu;
}
return -1;
}
