lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Tue, 21 Mar 2017 13:25:10 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:     Jason Wang <jasowang@...hat.com>, mst@...hat.com,
        kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 1/8] ptr_ring: introduce batch dequeuing

Hello!

On 3/21/2017 7:04 AM, Jason Wang wrote:

> Signed-off-by: Jason Wang <jasowang@...hat.com>
> ---
>  include/linux/ptr_ring.h | 65 ++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 65 insertions(+)
>
> diff --git a/include/linux/ptr_ring.h b/include/linux/ptr_ring.h
> index 6c70444..4771ded 100644
> --- a/include/linux/ptr_ring.h
> +++ b/include/linux/ptr_ring.h
> @@ -247,6 +247,22 @@ static inline void *__ptr_ring_consume(struct ptr_ring *r)
>  	return ptr;
>  }
>
> +static inline int __ptr_ring_consume_batched(struct ptr_ring *r,
> +					     void **array, int n)
> +{
> +	void *ptr;
> +	int i = 0;
> +
> +	while (i < n) {

    Hm, why not *for*?

> +		ptr = __ptr_ring_consume(r);
> +		if (!ptr)
> +			break;
> +		array[i++] = ptr;
> +	}
> +
> +	return i;
> +}
> +
>  /*
>   * Note: resize (below) nests producer lock within consumer lock, so if you
>   * call this in interrupt or BH context, you must disable interrupts/BH when
> @@ -297,6 +313,55 @@ static inline void *ptr_ring_consume_bh(struct ptr_ring *r)
[...]

MBR, Sergei

Powered by blists - more mailing lists