Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1208425

Re: [PATCH] net/wireless: enable wiphy device to suspend/resume asynchronously

Show all headers | View raw

On Mon, 2015-08-17 at 09:48 +0800, Fu, Zhonghui wrote:
> 
> The suspend/resume timing of wiphy device and related devices will be 
> ensured by their parent/child relationship. So, enabling wiphy device 
> to suspend/resume asynchronously does not change any  dependency. It 
> can only take advantage of multicore and improve system 
> suspend/resume speed.
> 

You're going to have to explain that to me, because I don't see that.
All I see is that when looking at a device, if async is possible, it
gets added to an async work, and if async is not possible then it gets
done immediately. Even putting aside the question of whether or not
async is ordered or not (I don't know), if the wiphy is async and the
PCI (or other bus) device isn't, then it seems they could get handled
out of order, no? Or is there some magic code somewhere that I'm
missing that explicitly waits for the async of the parent/child
relationship?

johannes
--
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/

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Re: [PATCH] net/wireless: enable wiphy device to suspend/resume asynchronously "Fu, Zhonghui" <zhonghui.fu@linux.intel.com> - 2015-08-17 03:50 +0200
  Re: [PATCH] net/wireless: enable wiphy device to suspend/resume  asynchronously Johannes Berg <johannes@sipsolutions.net> - 2015-08-17 09:30 +0200
    Re: [PATCH] net/wireless: enable wiphy device to suspend/resume asynchronously Arend van Spriel <arend@broadcom.com> - 2015-08-17 10:50 +0200

csiph-web