lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

x86: use cpumask function for present, possible, and online cpus

Browse Source 
cpu_online(), cpu_present(), for_each_possible_cpu(), num_possible_cpus()

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Akinobu Mita
2008-04-19 23:55:17 +09:00
committed by Ingo Molnar
parent 877084fb1c
commit 7c04e64a1b
5 changed files with 11 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/kernel/genapic_64.c
View File

@@ -51,7 +51,7 @@ void __init setup_apic_routing(void)
else else
#endif #endif
if (cpus_weight(cpu_possible_map) <= 8) if (num_possible_cpus() <= 8)
genapic = &apic_flat; genapic = &apic_flat;
else else
genapic = &apic_physflat; genapic = &apic_physflat;

4
arch/x86/kernel/smpboot.c
View File

@@ -1058,7 +1058,7 @@ int __cpuinit native_cpu_up(unsigned int cpu)
check_tsc_sync_source(cpu); check_tsc_sync_source(cpu);
local_irq_restore(flags); local_irq_restore(flags);
while (!cpu_isset(cpu, cpu_online_map)) { while (!cpu_online(cpu)) {
cpu_relax(); cpu_relax();
touch_nmi_watchdog(); touch_nmi_watchdog();
} }
@@ -1168,7 +1168,7 @@ static void __init smp_cpu_index_default(void)
int i; int i;
struct cpuinfo_x86 *c; struct cpuinfo_x86 *c;
for_each_cpu_mask(i, cpu_possible_map) { for_each_possible_cpu(i) {
c = &cpu_data(i); c = &cpu_data(i);
/* mark all to hotplug */ /* mark all to hotplug */
c->cpu_index = NR_CPUS; c->cpu_index = NR_CPUS;

4
arch/x86/kernel/tlb_64.c
View File

@@ -195,9 +195,9 @@ static int __cpuinit init_smp_flush(void)
{ {
int i; int i;
for_each_cpu_mask(i, cpu_possible_map) { for_each_possible_cpu(i)
spin_lock_init(&per_cpu(flush_state, i).tlbstate_lock); spin_lock_init(&per_cpu(flush_state, i).tlbstate_lock);
}
return 0; return 0;
} }
core_initcall(init_smp_flush); core_initcall(init_smp_flush);

8
arch/x86/mach-voyager/voyager_smp.c
View File

@@ -113,7 +113,7 @@ static inline void send_QIC_CPI(__u32 cpuset, __u8 cpi)
for_each_online_cpu(cpu) { for_each_online_cpu(cpu) {
if (cpuset & (1 << cpu)) { if (cpuset & (1 << cpu)) {
#ifdef VOYAGER_DEBUG #ifdef VOYAGER_DEBUG
if (!cpu_isset(cpu, cpu_online_map)) if (!cpu_online(cpu))
VDEBUG(("CPU%d sending cpi %d to CPU%d not in " VDEBUG(("CPU%d sending cpi %d to CPU%d not in "
"cpu_online_map\n", "cpu_online_map\n",
hard_smp_processor_id(), cpi, cpu)); hard_smp_processor_id(), cpi, cpu));
@@ -683,8 +683,8 @@ void __init smp_boot_cpus(void)
* Code added from smpboot.c */ * Code added from smpboot.c */
{ {
unsigned long bogosum = 0; unsigned long bogosum = 0;
for (i = 0; i < NR_CPUS; i++)
if (cpu_isset(i, cpu_online_map)) for_each_online_cpu(i)
bogosum += cpu_data(i).loops_per_jiffy; bogosum += cpu_data(i).loops_per_jiffy;
printk(KERN_INFO "Total of %d processors activated " printk(KERN_INFO "Total of %d processors activated "
"(%lu.%02lu BogoMIPS).\n", "(%lu.%02lu BogoMIPS).\n",
@@ -1838,7 +1838,7 @@ static int __cpuinit voyager_cpu_up(unsigned int cpu)
return -EIO; return -EIO;
/* Unleash the CPU! */ /* Unleash the CPU! */
cpu_set(cpu, smp_commenced_mask); cpu_set(cpu, smp_commenced_mask);
while (!cpu_isset(cpu, cpu_online_map)) while (!cpu_online(cpu))
mb(); mb();
return 0; return 0;
} }

2
arch/x86/xen/smp.c
View File

@@ -193,7 +193,7 @@ void __init xen_smp_prepare_cpus(unsigned int max_cpus)
/* Restrict the possible_map according to max_cpus. */ /* Restrict the possible_map according to max_cpus. */
while ((num_possible_cpus() > 1) && (num_possible_cpus() > max_cpus)) { while ((num_possible_cpus() > 1) && (num_possible_cpus() > max_cpus)) {
for (cpu = NR_CPUS-1; !cpu_isset(cpu, cpu_possible_map); cpu--) for (cpu = NR_CPUS - 1; !cpu_possible(cpu); cpu--)
continue; continue;
cpu_clear(cpu, cpu_possible_map); cpu_clear(cpu, cpu_possible_map);
} }