Re: [PATCH] dm crypt: export sysfs of kcryptd workqueue

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Hi Mike,

What about this patch?

On 11/30/20 7:33 PM, Jeffle Xu wrote:
> It should be helpful to export sysfs of "kcryptd" workqueue in some
> cases, such as setting specific CPU affinity of the workqueue.
> 
> Besides, also tweak the name format a little. The slash inside a
> directory name will be translate into exclamation mark, such as
> /sys/devices/virtual/workqueue/'kcryptd!253:0'.
> 
> Signed-off-by: Jeffle Xu <jefflexu@xxxxxxxxxxxxxxxxx>
> ---
>  drivers/md/dm-crypt.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
> index 392337f16ecf..6b4c1f674239 100644
> --- a/drivers/md/dm-crypt.c
> +++ b/drivers/md/dm-crypt.c
> @@ -3166,11 +3166,12 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv)
>  	}
>  
>  	if (test_bit(DM_CRYPT_SAME_CPU, &cc->flags))
> -		cc->crypt_queue = alloc_workqueue("kcryptd/%s", WQ_CPU_INTENSIVE | WQ_MEM_RECLAIM,
> +		cc->crypt_queue = alloc_workqueue("kcryptd-%s", WQ_CPU_INTENSIVE | WQ_MEM_RECLAIM,
>  						  1, devname);
>  	else
> -		cc->crypt_queue = alloc_workqueue("kcryptd/%s",
> -						  WQ_CPU_INTENSIVE | WQ_MEM_RECLAIM | WQ_UNBOUND,
> +		cc->crypt_queue = alloc_workqueue("kcryptd-%s",
> +						  WQ_CPU_INTENSIVE | WQ_MEM_RECLAIM |
> +						  WQ_UNBOUND | WQ_SYSFS,
>  						  num_online_cpus(), devname);
>  	if (!cc->crypt_queue) {
>  		ti->error = "Couldn't create kcryptd queue";
> 

-- 
Thanks,
Jeffle

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