On Sun, Mar 31, 2013 at 8:01 PM, Viresh Kumar <viresh.kumar@xxxxxxxxxx> wrote:
> This patch adds system wide system_freezable_unbound_wq which will be used by
> code that currently uses system_freezable_wq and can be moved to unbound
> workqueues.
_Why_ do i need this change?
> Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
> ---
> include/linux/workqueue.h | 4 ++++
> kernel/workqueue.c | 7 ++++++-
> 2 files changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
> index 835d12b..ab7597b 100644
> --- a/include/linux/workqueue.h
> +++ b/include/linux/workqueue.h
> @@ -325,11 +325,15 @@ enum {
> *
> * system_freezable_wq is equivalent to system_wq except that it's
> * freezable.
> + *
> + * system_freezable_unbound_wq is equivalent to system_unbound_wq except that
> + * it's freezable.
> */
> extern struct workqueue_struct *system_wq;
> extern struct workqueue_struct *system_long_wq;
> extern struct workqueue_struct *system_unbound_wq;
> extern struct workqueue_struct *system_freezable_wq;
> +extern struct workqueue_struct *system_freezable_unbound_wq;
>
> static inline struct workqueue_struct * __deprecated __system_nrt_wq(void)
> {
> diff --git a/kernel/workqueue.c b/kernel/workqueue.c
> index df2f6c4..771a5cc 100644
> --- a/kernel/workqueue.c
> +++ b/kernel/workqueue.c
> @@ -281,6 +281,8 @@ struct workqueue_struct *system_unbound_wq __read_mostly;
> EXPORT_SYMBOL_GPL(system_unbound_wq);
> struct workqueue_struct *system_freezable_wq __read_mostly;
> EXPORT_SYMBOL_GPL(system_freezable_wq);
> +struct workqueue_struct *system_freezable_unbound_wq __read_mostly;
> +EXPORT_SYMBOL_GPL(system_freezable_unbound_wq);
>
> static int worker_thread(void *__worker);
> static void copy_workqueue_attrs(struct workqueue_attrs *to,
> @@ -4467,8 +4469,11 @@ static int __init init_workqueues(void)
> WQ_UNBOUND_MAX_ACTIVE);
> system_freezable_wq = alloc_workqueue("events_freezable",
> WQ_FREEZABLE, 0);
> + system_freezable_unbound_wq = alloc_workqueue("events_unbound_freezable",
> + WQ_FREEZABLE | WQ_UNBOUND, 0);
> BUG_ON(!system_wq || !system_highpri_wq || !system_long_wq ||
> - !system_unbound_wq || !system_freezable_wq);
> + !system_unbound_wq || !system_freezable_wq ||
> + !system_freezable_unbound_wq);
> return 0;
> }
> early_initcall(init_workqueues);
> --
> 1.7.12.rc2.18.g61b472e
>
>
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