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cpumask: use zalloc_cpumask_var() where possible

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Remove open-coded zalloc_cpumask_var() and zalloc_cpumask_var_node().

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Li Zefan 2009-06-15 14:58:26 +08:00 committed by Rusty Russell
parent a724eada8c
commit 79f5599772
9 changed files with 14 additions and 30 deletions
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7
arch/x86/kernel/apic/io_apic.c
View File

@ -227,17 +227,14 @@ static struct irq_cfg *get_one_free_irq_cfg(int node)
cfg = kzalloc_node(sizeof(*cfg), GFP_ATOMIC, node);
if (cfg) {
if (!alloc_cpumask_var_node(&cfg->domain, GFP_ATOMIC, node)) {
if (!zalloc_cpumask_var_node(&cfg->domain, GFP_ATOMIC, node)) {
kfree(cfg);
cfg = NULL;
} else if (!alloc_cpumask_var_node(&cfg->old_domain,
} else if (!zalloc_cpumask_var_node(&cfg->old_domain,
GFP_ATOMIC, node)) {
free_cpumask_var(cfg->domain);
kfree(cfg);
cfg = NULL;
} else {
cpumask_clear(cfg->domain);
cpumask_clear(cfg->old_domain);
}
}

6
arch/x86/kernel/process.c
View File

@ -555,10 +555,8 @@ void __cpuinit select_idle_routine(const struct cpuinfo_x86 *c)
void __init init_c1e_mask(void)
{
/* If we're using c1e_idle, we need to allocate c1e_mask. */
if (pm_idle == c1e_idle) {
alloc_cpumask_var(&c1e_mask, GFP_KERNEL);
cpumask_clear(c1e_mask);
}
if (pm_idle == c1e_idle)
zalloc_cpumask_var(&c1e_mask, GFP_KERNEL);
}
static int __init idle_setup(char *str)

9
arch/x86/kernel/smpboot.c
View File

@ -1059,12 +1059,9 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
#endif
current_thread_info()->cpu = 0; /* needed? */
for_each_possible_cpu(i) {
alloc_cpumask_var(&per_cpu(cpu_sibling_map, i), GFP_KERNEL);
alloc_cpumask_var(&per_cpu(cpu_core_map, i), GFP_KERNEL);
alloc_cpumask_var(&cpu_data(i).llc_shared_map, GFP_KERNEL);
cpumask_clear(per_cpu(cpu_core_map, i));
cpumask_clear(per_cpu(cpu_sibling_map, i));
cpumask_clear(cpu_data(i).llc_shared_map);
zalloc_cpumask_var(&per_cpu(cpu_sibling_map, i), GFP_KERNEL);
zalloc_cpumask_var(&per_cpu(cpu_core_map, i), GFP_KERNEL);
zalloc_cpumask_var(&cpu_data(i).llc_shared_map, GFP_KERNEL);
}
set_cpu_sibling_map(0);

3
drivers/acpi/processor_perflib.c
View File

@ -511,7 +511,7 @@ int acpi_processor_preregister_performance(
struct acpi_processor *match_pr;
struct acpi_psd_package *match_pdomain;
if (!alloc_cpumask_var(&covered_cpus, GFP_KERNEL))
if (!zalloc_cpumask_var(&covered_cpus, GFP_KERNEL))
return -ENOMEM;
mutex_lock(&performance_mutex);
@ -558,7 +558,6 @@ int acpi_processor_preregister_performance(
* Now that we have _PSD data from all CPUs, lets setup P-state
* domain info.
*/
cpumask_clear(covered_cpus);
for_each_possible_cpu(i) {
pr = per_cpu(processors, i);
if (!pr)

3
drivers/acpi/processor_throttling.c
View File

@ -77,7 +77,7 @@ static int acpi_processor_update_tsd_coord(void)
struct acpi_tsd_package *pdomain, *match_pdomain;
struct acpi_processor_throttling *pthrottling, *match_pthrottling;
if (!alloc_cpumask_var(&covered_cpus, GFP_KERNEL))
if (!zalloc_cpumask_var(&covered_cpus, GFP_KERNEL))
return -ENOMEM;
/*
@ -105,7 +105,6 @@ static int acpi_processor_update_tsd_coord(void)
if (retval)
goto err_ret;
cpumask_clear(covered_cpus);
for_each_possible_cpu(i) {
pr = per_cpu(processors, i);
if (!pr)

3
drivers/net/sfc/efx.c
View File

@ -884,13 +884,12 @@ static int efx_wanted_rx_queues(void)
int count;
int cpu;
if (unlikely(!alloc_cpumask_var(&core_mask, GFP_KERNEL))) {
if (unlikely(!zalloc_cpumask_var(&core_mask, GFP_KERNEL))) {
printk(KERN_WARNING
"sfc: RSS disabled due to allocation failure\n");
return 1;
}
cpumask_clear(core_mask);
count = 0;
for_each_online_cpu(cpu) {
if (!cpumask_test_cpu(cpu, core_mask)) {

3
drivers/oprofile/buffer_sync.c
View File

@ -154,9 +154,8 @@ int sync_start(void)
{
int err;
if (!alloc_cpumask_var(&marked_cpus, GFP_KERNEL))
if (!zalloc_cpumask_var(&marked_cpus, GFP_KERNEL))
return -ENOMEM;
cpumask_clear(marked_cpus);
start_cpu_work();

7
kernel/trace/trace.c
View File

@ -1984,11 +1984,9 @@ __tracing_open(struct inode *inode, struct file *file)
if (current_trace)
*iter->trace = *current_trace;
if (!alloc_cpumask_var(&iter->started, GFP_KERNEL))
if (!zalloc_cpumask_var(&iter->started, GFP_KERNEL))
goto fail;
cpumask_clear(iter->started);
if (current_trace && current_trace->print_max)
iter->tr = &max_tr;
else
@ -4389,7 +4387,7 @@ __init static int tracer_alloc_buffers(void)
if (!alloc_cpumask_var(&tracing_cpumask, GFP_KERNEL))
goto out_free_buffer_mask;
if (!alloc_cpumask_var(&tracing_reader_cpumask, GFP_KERNEL))
if (!zalloc_cpumask_var(&tracing_reader_cpumask, GFP_KERNEL))
goto out_free_tracing_cpumask;
/* To save memory, keep the ring buffer size to its minimum */
@ -4400,7 +4398,6 @@ __init static int tracer_alloc_buffers(void)
cpumask_copy(tracing_buffer_mask, cpu_possible_mask);
cpumask_copy(tracing_cpumask, cpu_all_mask);
cpumask_clear(tracing_reader_cpumask);
/* TODO: make the number of buffers hot pluggable with CPUS */
global_trace.buffer = ring_buffer_alloc(ring_buf_size,

3
virt/kvm/kvm_main.c
View File

@ -738,8 +738,7 @@ static bool make_all_cpus_request(struct kvm *kvm, unsigned int req)
bool called = true;
struct kvm_vcpu *vcpu;
if (alloc_cpumask_var(&cpus, GFP_ATOMIC))
cpumask_clear(cpus);
zalloc_cpumask_var(&cpus, GFP_ATOMIC);
spin_lock(&kvm->requests_lock);
me = smp_processor_id();