Messages in this thread Patch in this message | | | Date | Thu, 04 Jun 2009 14:01:31 -0700 | From | Yinghai Lu <> | Subject | [PATCH] cpumask: alloc blank cpumask left over |
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avoid suprise when MAXSMP is enabled
Signed-off-by: Yinghai Lu <yinghai.lu@kernel.org>
diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c index 54b6de2..71fe451 100644 --- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c +++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c @@ -552,7 +552,7 @@ static int __init acpi_cpufreq_early_init(void) for_each_possible_cpu(i) { if (!alloc_cpumask_var_node( &per_cpu_ptr(acpi_perf_data, i)->shared_cpu_map, - GFP_KERNEL, cpu_to_node(i))) { + GFP_KERNEL | __GFP_ZERO, cpu_to_node(i))) { /* Freeing a NULL pointer is OK: alloc_percpu zeroes. */ free_acpi_perf_data(); diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k7.c b/arch/x86/kernel/cpu/cpufreq/powernow-k7.c index a8363e5..17940ed 100644 --- a/arch/x86/kernel/cpu/cpufreq/powernow-k7.c +++ b/arch/x86/kernel/cpu/cpufreq/powernow-k7.c @@ -323,7 +323,7 @@ static int powernow_acpi_init(void) } if (!alloc_cpumask_var(&acpi_processor_perf->shared_cpu_map, - GFP_KERNEL)) { + GFP_KERNEL | __GFP_ZERO)) { retval = -ENOMEM; goto err05; } diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c index f6b32d1..2e9428a 100644 --- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c +++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c @@ -886,7 +886,8 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data) /* notify BIOS that we exist */ acpi_processor_notify_smm(THIS_MODULE); - if (!alloc_cpumask_var(&data->acpi_data.shared_cpu_map, GFP_KERNEL)) { + if (!alloc_cpumask_var(&data->acpi_data.shared_cpu_map, + GFP_KERNEL | __GFP_ZERO)) { printk(KERN_ERR PFX "unable to alloc powernow_k8_data cpumask\n"); ret_val = -ENOMEM; diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c b/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c index c9f1fdc..3a6a559 100644 --- a/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c +++ b/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c @@ -471,7 +471,8 @@ static int centrino_target (struct cpufreq_policy *policy, if (unlikely(!alloc_cpumask_var(&saved_mask, GFP_KERNEL))) return -ENOMEM; - if (unlikely(!alloc_cpumask_var(&covered_cpus, GFP_KERNEL))) { + if (unlikely(!alloc_cpumask_var(&covered_cpus, + GFP_KERNEL | __GFP_ZERO))) { free_cpumask_var(saved_mask); return -ENOMEM; } diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index 1d0aa9c..3dbfd3a 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -1297,7 +1297,7 @@ static __init int mce_init_device(void) if (!mce_available(&boot_cpu_data)) return -EIO; - alloc_cpumask_var(&mce_dev_initialized, GFP_KERNEL); + alloc_cpumask_var(&mce_dev_initialized, GFP_KERNEL | __GFP_ZERO); err = mce_init_banks(); if (err) diff --git a/arch/x86/kernel/tlb_uv.c b/arch/x86/kernel/tlb_uv.c index 16f0fd4..2f718e2 100644 --- a/arch/x86/kernel/tlb_uv.c +++ b/arch/x86/kernel/tlb_uv.c @@ -844,7 +844,8 @@ static int __init uv_bau_init(void) for_each_possible_cpu(cur_cpu) alloc_cpumask_var_node(&per_cpu(uv_flush_tlb_mask, cur_cpu), - GFP_KERNEL, cpu_to_node(cur_cpu)); + GFP_KERNEL | __GFP_ZERO, + cpu_to_node(cur_cpu)); uv_bau_retry_limit = 1; uv_nshift = uv_hub_info->n_val; diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index 45ad328..62b854d 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -844,7 +844,8 @@ static int acpi_processor_add(struct acpi_device *device) if (!pr) return -ENOMEM; - if (!alloc_cpumask_var(&pr->throttling.shared_cpu_map, GFP_KERNEL)) { + if (!alloc_cpumask_var(&pr->throttling.shared_cpu_map, + GFP_KERNEL | __GFP_ZERO)) { kfree(pr); return -ENOMEM; } diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 47d2ad0..28648a2 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -808,7 +808,8 @@ static int cpufreq_add_dev(struct sys_device *sys_dev) ret = -ENOMEM; goto nomem_out; } - if (!alloc_cpumask_var(&policy->related_cpus, GFP_KERNEL)) { + if (!alloc_cpumask_var(&policy->related_cpus, + GFP_KERNEL | __GFP_ZERO)) { free_cpumask_var(policy->cpus); kfree(policy); ret = -ENOMEM; diff --git a/kernel/sched_cpupri.c b/kernel/sched_cpupri.c index cdd3c89..ce7cec8 100644 --- a/kernel/sched_cpupri.c +++ b/kernel/sched_cpupri.c @@ -165,7 +165,7 @@ int __init_refok cpupri_init(struct cpupri *cp, bool bootmem) vec->count = 0; if (bootmem) alloc_bootmem_cpumask_var(&vec->mask); - else if (!alloc_cpumask_var(&vec->mask, GFP_KERNEL)) + else if (!alloc_cpumask_var(&vec->mask, GFP_KERNEL | __GFP_ZERO)) goto cleanup; } diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c index f2c66f8..181cbe5 100644 --- a/kernel/sched_rt.c +++ b/kernel/sched_rt.c @@ -1592,7 +1592,8 @@ static inline void init_sched_rt_class(void) for_each_possible_cpu(i) alloc_cpumask_var_node(&per_cpu(local_cpu_mask, i), - GFP_KERNEL, cpu_to_node(i)); + GFP_KERNEL | __GFP_ZERO, + cpu_to_node(i)); } #endif /* CONFIG_SMP */ diff --git a/kernel/smp.c b/kernel/smp.c index 858baac..0c7b82f 100644 --- a/kernel/smp.c +++ b/kernel/smp.c @@ -52,8 +52,9 @@ hotplug_cfd(struct notifier_block *nfb, unsigned long action, void *hcpu) switch (action) { case CPU_UP_PREPARE: case CPU_UP_PREPARE_FROZEN: - if (!alloc_cpumask_var_node(&cfd->cpumask, GFP_KERNEL, - cpu_to_node(cpu))) + if (!alloc_cpumask_var_node(&cfd->cpumask, + GFP_KERNEL | __GFP_ZERO, + cpu_to_node(cpu))) return NOTIFY_BAD; break;
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