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-rw-r--r--arch/s390/kernel/processor.c69
-rw-r--r--arch/s390/kernel/setup.c10
-rw-r--r--arch/s390/kernel/smp.c8
3 files changed, 41 insertions, 46 deletions
diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c
index 82c1872cfe80..423da1bd42a4 100644
--- a/arch/s390/kernel/processor.c
+++ b/arch/s390/kernel/processor.c
@@ -18,10 +18,11 @@
#include <asm/lowcore.h>
#include <asm/param.h>
-void __cpuinit print_cpu_info(struct cpuinfo_S390 *cpuinfo)
+void __cpuinit print_cpu_info(void)
{
pr_info("Processor %d started, address %d, identification %06X\n",
- cpuinfo->cpu_nr, cpuinfo->cpu_addr, cpuinfo->cpu_id.ident);
+ S390_lowcore.cpu_nr, S390_lowcore.cpu_addr,
+ S390_lowcore.cpu_id.ident);
}
/*
@@ -34,44 +35,42 @@ static int show_cpuinfo(struct seq_file *m, void *v)
"esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp",
"edat"
};
- struct cpuinfo_S390 *cpuinfo;
- unsigned long n = (unsigned long) v - 1;
- int i;
+ struct _lowcore *lc;
+ unsigned long n = (unsigned long) v - 1;
+ int i;
- s390_adjust_jiffies();
- preempt_disable();
- if (!n) {
- seq_printf(m, "vendor_id : IBM/S390\n"
- "# processors : %i\n"
- "bogomips per cpu: %lu.%02lu\n",
- num_online_cpus(), loops_per_jiffy/(500000/HZ),
- (loops_per_jiffy/(5000/HZ))%100);
- seq_puts(m, "features\t: ");
- for (i = 0; i < 8; i++)
- if (hwcap_str[i] && (elf_hwcap & (1UL << i)))
- seq_printf(m, "%s ", hwcap_str[i]);
- seq_puts(m, "\n");
- }
+ s390_adjust_jiffies();
+ preempt_disable();
+ if (!n) {
+ seq_printf(m, "vendor_id : IBM/S390\n"
+ "# processors : %i\n"
+ "bogomips per cpu: %lu.%02lu\n",
+ num_online_cpus(), loops_per_jiffy/(500000/HZ),
+ (loops_per_jiffy/(5000/HZ))%100);
+ seq_puts(m, "features\t: ");
+ for (i = 0; i < 8; i++)
+ if (hwcap_str[i] && (elf_hwcap & (1UL << i)))
+ seq_printf(m, "%s ", hwcap_str[i]);
+ seq_puts(m, "\n");
+ }
- if (cpu_online(n)) {
+ if (cpu_online(n)) {
#ifdef CONFIG_SMP
- if (smp_processor_id() == n)
- cpuinfo = &S390_lowcore.cpu_data;
- else
- cpuinfo = &lowcore_ptr[n]->cpu_data;
+ lc = (smp_processor_id() == n) ?
+ &S390_lowcore : lowcore_ptr[n];
#else
- cpuinfo = &S390_lowcore.cpu_data;
+ lc = &S390_lowcore;
#endif
- seq_printf(m, "processor %li: "
- "version = %02X, "
- "identification = %06X, "
- "machine = %04X\n",
- n, cpuinfo->cpu_id.version,
- cpuinfo->cpu_id.ident,
- cpuinfo->cpu_id.machine);
- }
- preempt_enable();
- return 0;
+ seq_printf(m, "processor %li: "
+ "version = %02X, "
+ "identification = %06X, "
+ "machine = %04X\n",
+ n, lc->cpu_id.version,
+ lc->cpu_id.ident,
+ lc->cpu_id.machine);
+ }
+ preempt_enable();
+ return 0;
}
static void *c_start(struct seq_file *m, loff_t *pos)
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index dd3c51736270..9c8853f21bb2 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -121,13 +121,10 @@ static struct resource data_resource = {
*/
void __cpuinit cpu_init(void)
{
- int addr = hard_smp_processor_id();
-
/*
* Store processor id in lowcore (used e.g. in timer_interrupt)
*/
- get_cpu_id(&S390_lowcore.cpu_data.cpu_id);
- S390_lowcore.cpu_data.cpu_addr = addr;
+ get_cpu_id(&S390_lowcore.cpu_id);
/*
* Force FPU initialization:
@@ -686,7 +683,6 @@ setup_memory(void)
static void __init setup_hwcaps(void)
{
static const int stfl_bits[6] = { 0, 2, 7, 17, 19, 21 };
- struct cpuinfo_S390 *cpuinfo = &S390_lowcore.cpu_data;
unsigned long long facility_list_extended;
unsigned int facility_list;
int i;
@@ -732,7 +728,7 @@ static void __init setup_hwcaps(void)
if (MACHINE_HAS_HPAGE)
elf_hwcap |= 1UL << 7;
- switch (cpuinfo->cpu_id.machine) {
+ switch (S390_lowcore.cpu_id.machine) {
case 0x9672:
#if !defined(CONFIG_64BIT)
default: /* Use "g5" as default for 31 bit kernels. */
@@ -825,7 +821,7 @@ setup_arch(char **cmdline_p)
setup_lowcore();
cpu_init();
- __cpu_logical_map[0] = S390_lowcore.cpu_data.cpu_addr;
+ __cpu_logical_map[0] = stap();
s390_init_cpu_topology();
/*
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index a8858634dd05..b167f74d94cd 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -372,7 +372,7 @@ static void __init smp_detect_cpus(void)
c_cpus = 1;
s_cpus = 0;
- boot_cpu_addr = S390_lowcore.cpu_data.cpu_addr;
+ boot_cpu_addr = __cpu_logical_map[0];
info = kmalloc(sizeof(*info), GFP_KERNEL);
if (!info)
panic("smp_detect_cpus failed to allocate memory\n");
@@ -446,7 +446,7 @@ int __cpuinit start_secondary(void *cpuvoid)
/* Switch on interrupts */
local_irq_enable();
/* Print info about this processor */
- print_cpu_info(&S390_lowcore.cpu_data);
+ print_cpu_info();
/* cpu_idle will call schedule for us */
cpu_idle();
return 0;
@@ -564,7 +564,7 @@ int __cpuinit __cpu_up(unsigned int cpu)
: : "a" (&cpu_lowcore->access_regs_save_area) : "memory");
cpu_lowcore->percpu_offset = __per_cpu_offset[cpu];
cpu_lowcore->current_task = (unsigned long) idle;
- cpu_lowcore->cpu_data.cpu_nr = cpu;
+ cpu_lowcore->cpu_nr = cpu;
cpu_lowcore->kernel_asce = S390_lowcore.kernel_asce;
cpu_lowcore->ipl_device = S390_lowcore.ipl_device;
eieio();
@@ -656,7 +656,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
/* request the 0x1201 emergency signal external interrupt */
if (register_external_interrupt(0x1201, do_ext_call_interrupt) != 0)
panic("Couldn't request external interrupt 0x1201");
- print_cpu_info(&S390_lowcore.cpu_data);
+ print_cpu_info();
/* Reallocate current lowcore, but keep its contents. */
lc_order = sizeof(long) == 8 ? 1 : 0;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 15:37:29 +0000