lkml.org 
[lkml]   [2015]   [Jun]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 1/6] power: hibernate: Use separate messages for "Syncing filesystems"
From
Date
On Tue, 2015-06-09 at 01:35 +0200, Rafael J. Wysocki wrote:
> On Thursday, June 04, 2015 11:36:44 AM Joe Perches wrote:
> > Add the ability to see how long it takes to sync the filesystems
> > via the printk time mechanism.
> >
> > Start to standardize the printk "PM: doing something...done"
> > messages on two separate lines.
>
> Well, it would be good to say what problem this is attempting to fix.
>
> And while I understand the underlying concern, there is a merit in keeping
> each of these messages in one line (if everything goes well), so I'm wondering
> what about printing each of them in one go after the operation with a tail
> depending on the result? Like
>
> printk(KERN_INFO "PM: Syncing filesystems ... done\n");
>
> on success or
>
> printk(KERN_INFO "PM: Syncing filesystems ... failed\n");
>
> on failure?

Maybe.

I believe there are multi-second delays possible when
syncing the filesystems on things like usb memory sticks.

I think the dmesg line count here isn't particularly important
and there's some small value in consistently presenting timing
information via dmesg timestamps when using 2 lines.

There's also some small value in patch 6/6 and the consistent
prefixing of "PM: " on all these messages.




\
 
 \ /
  Last update: 2015-06-09 01:41    [W:0.113 / U:0.284 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site