lkml.org 
[lkml]   [2006]   [May]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 2/9] [I/OAT] Driver for the Intel(R) I/OAT DMA engine
Chris Leech <christopher.leech@intel.com> wrote:
>
> +static void ioat_dma_memcpy_cleanup(struct ioat_dma_chan *chan)
> +{
> + unsigned long phys_complete;
> + struct ioat_desc_sw *desc, *_desc;
> + dma_cookie_t cookie = 0;
> +
> + prefetch(chan->completion_virt);
> +
> + if (!spin_trylock(&chan->cleanup_lock))
> + return;
> +

spin_trylock() is a red flag. It often means that someone screwed their
locking up.

It at least needs a comment explaining its presence.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-05-24 02:59    [W:0.103 / U:1.248 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site