alloc_nodes_vectors

Name:Allocate vector number for each node, so that for each node:* 1) the allocated number is >= 1* 2) the allocated numbver is <= active CPU number of this node* The actual allocated total vectors may be less than @numvecs when

Proto:static void alloc_nodes_vectors(unsigned int numvecs, cpumask_var_t *node_to_cpumask, const struct cpumask *cpu_mask, const nodemask_t nodemsk, struct cpumask *nmsk, struct node_vectors *node_vectors)

Type:void

Parameter:

Type	Parameter	Name
unsigned int	numvecs
cpumask_var_t *	node_to_cpumask
const struct cpumask *	cpu_mask
const nodemask_t	nodemsk
struct cpumask *	nmsk
struct node_vectors *	node_vectors

135

remaining_ncpus = 0

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When n < nr_node_ids cycle

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id = n

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ncpus = UINT_MAX

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pumask_and - *dstp = *src1p & *src2p*@dstp: the cpumask result*@src1p: the first input*@src2p: the second input* If *@dstp is empty, returns 0, else returns 1

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ncpus = pumask_weight - Count of bits in *srcp*@srcp: the cpumask to count bits (< nr_cpu_ids) in.

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If Not ncpus Then Continue

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remaining_ncpus += ncpus

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numvecs = min_t - return minimum of two values, using the specified type*@type: data type to use*@x: first value*@y: second value(unsigned, remaining_ncpus, numvecs)

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sort(node_vectors, nr_node_ids, size of node_vectors[0] , ncpus_cmp_func, NULL)

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When n < nr_node_ids cycle

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If ncpus == UINT_MAX Then Continue

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WARN_ON_ONCE(numvecs == 0)

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nvectors = max_t - return maximum of two values, using the specified type*@type: data type to use*@x: first value*@y: second value(unsigned, 1, numvecs * ncpus / remaining_ncpus)

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WARN_ON_ONCE(nvectors > ncpus)

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nvectors = nvectors

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remaining_ncpus -= ncpus

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numvecs -= nvectors

**Caller**
Name	Describe
__irq_build_affinity_masks

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