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cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.: ia64

Browse source 
Impact: cleanup, futureproof

In fact, all cpumask ops will only be valid (in general) for bit
numbers < nr_cpu_ids.  So use that instead of NR_CPUS in various
places.

This is always safe: no cpu number can be >= nr_cpu_ids, and
nr_cpu_ids is initialized to NR_CPUS at boot.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Rusty Russell 2009-03-16 14:12:42 +10:30
parent 40fe697a17
commit 5dd3c9949a
8 changed files with 18 additions and 18 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
arch/ia64/kernel/acpi.c
View file

@ -924,9 +924,9 @@ int acpi_map_lsapic(acpi_handle handle, int *pcpu)
buffer.length = ACPI_ALLOCATE_BUFFER;
buffer.pointer = NULL;
cpus_complement(tmp_map, cpu_present_map);
cpu = first_cpu(tmp_map);
if (cpu >= NR_CPUS)
cpumask_complement(&tmp_map, cpu_present_mask);
cpu = cpumask_first(&tmp_map);
if (cpu >= nr_cpu_ids)
return -EINVAL;
acpi_map_cpu2node(handle, cpu, physid);

6
arch/ia64/kernel/mca.c
View file

@ -1456,9 +1456,9 @@ ia64_mca_cmc_int_caller(int cmc_irq, void *arg)
ia64_mca_cmc_int_handler(cmc_irq, arg);
for (++cpuid ; cpuid < NR_CPUS && !cpu_online(cpuid) ; cpuid++);
cpuid = cpumask_next(cpuid+1, cpu_online_mask);
if (cpuid < NR_CPUS) {
if (cpuid < nr_cpu_ids) {
platform_send_ipi(cpuid, IA64_CMCP_VECTOR, IA64_IPI_DM_INT, 0);
} else {
/* If no log record, switch out of polling mode */
@ -1525,7 +1525,7 @@ ia64_mca_cpe_int_caller(int cpe_irq, void *arg)
ia64_mca_cpe_int_handler(cpe_irq, arg);
for (++cpuid ; cpuid < NR_CPUS && !cpu_online(cpuid) ; cpuid++);
cpuid = cpumask_next(cpuid+1, cpu_online_mask);
if (cpuid < NR_CPUS) {
platform_send_ipi(cpuid, IA64_CPEP_VECTOR, IA64_IPI_DM_INT, 0);

4
arch/ia64/kernel/perfmon.c
View file

@ -5603,7 +5603,7 @@ pfm_interrupt_handler(int irq, void *arg)
* /proc/perfmon interface, for debug only
*/
#define PFM_PROC_SHOW_HEADER ((void *)NR_CPUS+1)
#define PFM_PROC_SHOW_HEADER ((void *)nr_cpu_ids+1)
static void *
pfm_proc_start(struct seq_file *m, loff_t *pos)
@ -5612,7 +5612,7 @@ pfm_proc_start(struct seq_file *m, loff_t *pos)
return PFM_PROC_SHOW_HEADER;
}
while (*pos <= NR_CPUS) {
while (*pos <= nr_cpu_ids) {
if (cpu_online(*pos - 1)) {
return (void *)*pos;
}

6
arch/ia64/kernel/salinfo.c
View file

@ -317,7 +317,7 @@ retry:
}
n = data->cpu_check;
for (i = 0; i < NR_CPUS; i++) {
for (i = 0; i < nr_cpu_ids; i++) {
if (cpu_isset(n, data->cpu_event)) {
if (!cpu_online(n)) {
cpu_clear(n, data->cpu_event);
@ -326,7 +326,7 @@ retry:
cpu = n;
break;
}
if (++n == NR_CPUS)
if (++n == nr_cpu_ids)
n = 0;
}
@ -337,7 +337,7 @@ retry:
/* for next read, start checking at next CPU */
data->cpu_check = cpu;
if (++data->cpu_check == NR_CPUS)
if (++data->cpu_check == nr_cpu_ids)
data->cpu_check = 0;
snprintf(cmd, sizeof(cmd), "read %d\n", cpu);

4
arch/ia64/kernel/setup.c
View file

@ -730,10 +730,10 @@ static void *
c_start (struct seq_file *m, loff_t *pos)
{
#ifdef CONFIG_SMP
while (*pos < NR_CPUS && !cpu_isset(*pos, cpu_online_map))
while (*pos < nr_cpu_ids && !cpu_online(*pos))
++*pos;
#endif
return *pos < NR_CPUS ? cpu_data(*pos) : NULL;
return *pos < nr_cpu_ids ? cpu_data(*pos) : NULL;
}
static void *

2
arch/ia64/sn/kernel/setup.c
View file

@ -750,7 +750,7 @@ nasid_slice_to_cpuid(int nasid, int slice)
{
long cpu;
for (cpu = 0; cpu < NR_CPUS; cpu++)
for (cpu = 0; cpu < nr_cpu_ids; cpu++)
if (cpuid_to_nasid(cpu) == nasid &&
cpuid_to_slice(cpu) == slice)
return cpu;

6
arch/ia64/sn/kernel/sn2/sn2_smp.c
View file

@ -461,7 +461,7 @@ bool sn_cpu_disable_allowed(int cpu)
static void *sn2_ptc_seq_start(struct seq_file *file, loff_t * offset)
{
if (*offset < NR_CPUS)
if (*offset < nr_cpu_ids)
return offset;
return NULL;
}
@ -469,7 +469,7 @@ static void *sn2_ptc_seq_start(struct seq_file *file, loff_t * offset)
static void *sn2_ptc_seq_next(struct seq_file *file, void *data, loff_t * offset)
{
(*offset)++;
if (*offset < NR_CPUS)
if (*offset < nr_cpu_ids)
return offset;
return NULL;
}
@ -491,7 +491,7 @@ static int sn2_ptc_seq_show(struct seq_file *file, void *data)
seq_printf(file, "# ptctest %d, flushopt %d\n", sn2_ptctest, sn2_flush_opt);
}
if (cpu < NR_CPUS && cpu_online(cpu)) {
if (cpu < nr_cpu_ids && cpu_online(cpu)) {
stat = &per_cpu(ptcstats, cpu);
seq_printf(file, "cpu %d %ld %ld %ld %ld %ld %ld %ld %ld %ld %ld %ld %ld\n", cpu, stat->ptc_l,
stat->change_rid, stat->shub_ptc_flushes, stat->nodes_flushed,

2
arch/ia64/sn/kernel/sn2/sn_hwperf.c
View file

@ -612,7 +612,7 @@ static int sn_hwperf_op_cpu(struct sn_hwperf_op_info *op_info)
op_info->a->arg &= SN_HWPERF_ARG_OBJID_MASK;
if (cpu != SN_HWPERF_ARG_ANY_CPU) {
if (cpu >= NR_CPUS || !cpu_online(cpu)) {
if (cpu >= nr_cpu_ids || !cpu_online(cpu)) {
r = -EINVAL;
goto out;
}