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authorLi Zefan <lizf@cn.fujitsu.com>2009-06-15 14:58:26 +0800
committerRusty Russell <rusty@rustcorp.com.au>2009-09-24 09:34:24 +0930
commit79f5599772ac2f138d7a75b8f3f06a93f09c75f7 (patch)
tree092c9f6e3f7c49d8f5bb9f3d39752ae7cfb9415a
parenta724eada8c2a7b62463b73ccf73fd0bb6e928aeb (diff)
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cpumask: use zalloc_cpumask_var() where possible
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>
-rw-r--r--arch/x86/kernel/apic/io_apic.c7
-rw-r--r--arch/x86/kernel/process.c6
-rw-r--r--arch/x86/kernel/smpboot.c9
-rw-r--r--drivers/acpi/processor_perflib.c3
-rw-r--r--drivers/acpi/processor_throttling.c3
-rw-r--r--drivers/net/sfc/efx.c3
-rw-r--r--drivers/oprofile/buffer_sync.c3
-rw-r--r--kernel/trace/trace.c7
-rw-r--r--virt/kvm/kvm_main.c3
9 files changed, 14 insertions, 30 deletions
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 64970b9885f..dc69f28489f 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -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);
}
}
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 847ab416031..5284cd2b577 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -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)
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 09c5e077dff..565ebc65920 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -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);
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index 11088cf1031..8ba0ed0b9dd 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -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)
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index ce7cf3bc510..4c6c14c1e30 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -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)
diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index 07a7e4b8f8f..cc4b2f99989 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -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)) {
diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c
index 8574622e36a..c9e2ae90f19 100644
--- a/drivers/oprofile/buffer_sync.c
+++ b/drivers/oprofile/buffer_sync.c
@@ -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();
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 6c0f6a8a22e..411af37f4be 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -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,
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 897bff3b7df..034a798b043 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -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();