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| author | Steffen Klassert <steffen.klassert@secunet.com> | 2010-07-27 07:19:27 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2010-07-31 19:53:06 +0800 |
| commit | 0500e9b3f11ce84fc6ee48a3e29909145e58ba48 (patch) | |
| tree | 42b21a89575b6b919c09ef33469143f38cf1a04e | |
| parent | d3f64e46aa21dd86a239274d218ec286461bfa68 (diff) | |
| download | op-kernel-dev-0500e9b3f11ce84fc6ee48a3e29909145e58ba48.zip op-kernel-dev-0500e9b3f11ce84fc6ee48a3e29909145e58ba48.tar.gz | |
padata: Remove padata_get_cpumask
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>
| -rw-r--r-- | include/linux/padata.h | 2 | ||||
| -rw-r--r-- | kernel/padata.c | 35 |
2 files changed, 0 insertions, 37 deletions
diff --git a/include/linux/padata.h b/include/linux/padata.h index 43db792..bdcd1e9 100644 --- a/include/linux/padata.h +++ b/include/linux/padata.h @@ -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, diff --git a/kernel/padata.c b/kernel/padata.c index 1c8c1d1..fd46792 100644 --- a/kernel/padata.c +++ b/kernel/padata.c @@ -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) |
