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[IA64] wider use of for_each_cpu_mask() in arch/ia64

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In arch/ia64 change the explicit use of for-loops and NR_CPUS into the
general for_each_cpu() or for_each_online_cpu() constructs, as
appropriate.  This widens the scope of potential future optimizations
of the general constructs, as well as takes advantage of the existing
optimizations of first_cpu() and next_cpu().

Signed-off-by: John Hawkes <hawkes@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
hawkes@sgi.com 2005-10-10 08:43:26 -07:00 committed by Tony Luck
parent 444d1d9bb5
commit dc565b525d
5 changed files with 20 additions and 19 deletions
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12
arch/ia64/kernel/irq.c
View File

@ -57,9 +57,9 @@ int show_interrupts(struct seq_file *p, void *v)
if (i == 0) {
seq_printf(p, " ");
for (j=0; j<NR_CPUS; j++)
if (cpu_online(j))
seq_printf(p, "CPU%d ",j);
for_each_online_cpu(j) {
seq_printf(p, "CPU%d ",j);
}
seq_putc(p, '\n');
}
@ -72,9 +72,9 @@ int show_interrupts(struct seq_file *p, void *v)
#ifndef CONFIG_SMP
seq_printf(p, "%10u ", kstat_irqs(i));
#else
for (j = 0; j < NR_CPUS; j++)
if (cpu_online(j))
seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
for_each_online_cpu(j) {
seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
}
#endif
seq_printf(p, " %14s", irq_desc[i].handler->typename);
seq_printf(p, " %s", action->name);

6
arch/ia64/kernel/module.c
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@ -947,8 +947,8 @@ void
percpu_modcopy (void *pcpudst, const void *src, unsigned long size)
{
unsigned int i;
for (i = 0; i < NR_CPUS; i++)
if (cpu_possible(i))
memcpy(pcpudst + __per_cpu_offset[i], src, size);
for_each_cpu(i) {
memcpy(pcpudst + __per_cpu_offset[i], src, size);
}
}
#endif /* CONFIG_SMP */

10
arch/ia64/kernel/smp.c
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@ -185,8 +185,8 @@ send_IPI_allbutself (int op)
{
unsigned int i;
for (i = 0; i < NR_CPUS; i++) {
if (cpu_online(i) && i != smp_processor_id())
for_each_online_cpu(i) {
if (i != smp_processor_id())
send_IPI_single(i, op);
}
}
@ -199,9 +199,9 @@ send_IPI_all (int op)
{
int i;
for (i = 0; i < NR_CPUS; i++)
if (cpu_online(i))
send_IPI_single(i, op);
for_each_online_cpu(i) {
send_IPI_single(i, op);
}
}
/*

6
arch/ia64/kernel/smpboot.c
View File

@ -694,9 +694,9 @@ smp_cpus_done (unsigned int dummy)
* Allow the user to impress friends.
*/
for (cpu = 0; cpu < NR_CPUS; cpu++)
if (cpu_online(cpu))
bogosum += cpu_data(cpu)->loops_per_jiffy;
for_each_online_cpu(cpu) {
bogosum += cpu_data(cpu)->loops_per_jiffy;
}
printk(KERN_INFO "Total of %d processors activated (%lu.%02lu BogoMIPS).\n",
(int)num_online_cpus(), bogosum/(500000/HZ), (bogosum/(5000/HZ))%100);

5
arch/ia64/mm/tlb.c
View File

@ -77,9 +77,10 @@ wrap_mmu_context (struct mm_struct *mm)
/* can't call flush_tlb_all() here because of race condition with O(1) scheduler [EF] */
{
int cpu = get_cpu(); /* prevent preemption/migration */
for (i = 0; i < NR_CPUS; ++i)
if (cpu_online(i) && (i != cpu))
for_each_online_cpu(i) {
if (i != cpu)
per_cpu(ia64_need_tlb_flush, i) = 1;
}
put_cpu();
}
local_flush_tlb_all();