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padata: Remove padata_get_cpumask

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A function that copies the padata cpumasks to a user buffer
is a bit error prone. The cpumask can change any time so we
can't be sure to have the right cpumask when using this function.
A user who is interested in the padata cpumasks should register
to the padata cpumask notifier chain instead. Users of
padata_get_cpumask are already updated, so we can remove it.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Steffen Klassert 2010-07-27 07:19:27 +02:00 committed by Herbert Xu
parent d3f64e46aa
commit 0500e9b3f1
2 changed files with 0 additions and 37 deletions
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2
include/linux/padata.h
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@ -176,8 +176,6 @@ extern void padata_free(struct padata_instance *pinst);
extern int padata_do_parallel(struct padata_instance *pinst,
struct padata_priv *padata, int cb_cpu);
extern void padata_do_serial(struct padata_priv *padata);
extern int padata_get_cpumask(struct padata_instance *pinst,
int cpumask_type, struct cpumask *out_mask);
extern int padata_set_cpumask(struct padata_instance *pinst, int cpumask_type,
cpumask_var_t cpumask);
extern int padata_set_cpumasks(struct padata_instance *pinst,

35
kernel/padata.c
View File

@ -589,41 +589,6 @@ static bool padata_validate_cpumask(struct padata_instance *pinst,
return true;
}
/**
* padata_get_cpumask: Fetch serial or parallel cpumask from the
* given padata instance and copy it to @out_mask
*
* @pinst: A pointer to padata instance
* @cpumask_type: Specifies which cpumask will be copied.
* Possible values are PADATA_CPU_SERIAL *or* PADATA_CPU_PARALLEL
* corresponding to serial and parallel cpumask respectively.
* @out_mask: A pointer to cpumask structure where selected
* cpumask will be copied.
*/
int padata_get_cpumask(struct padata_instance *pinst,
int cpumask_type, struct cpumask *out_mask)
{
struct parallel_data *pd;
int ret = 0;
rcu_read_lock_bh();
pd = rcu_dereference(pinst->pd);
switch (cpumask_type) {
case PADATA_CPU_SERIAL:
cpumask_copy(out_mask, pd->cpumask.cbcpu);
break;
case PADATA_CPU_PARALLEL:
cpumask_copy(out_mask, pd->cpumask.pcpu);
break;
default:
ret = -EINVAL;
}
rcu_read_unlock_bh();
return ret;
}
EXPORT_SYMBOL(padata_get_cpumask);
static int __padata_set_cpumasks(struct padata_instance *pinst,
cpumask_var_t pcpumask,
cpumask_var_t cbcpumask)