lkml.org 
[lkml]   [2015]   [Aug]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH RFC 2/2] net: Optimize snmp stat aggregation by walking all the percpu data at once
From
Date
On Tue, 2015-08-25 at 21:17 +0530, Raghavendra K T wrote:
> On 08/25/2015 07:58 PM, Eric Dumazet wrote:

> >
> >
> > This is a great idea, but kcalloc()/kmalloc() can fail and you'll crash
> > the whole kernel at this point.
> >
>
> Good catch, and my bad. Though system is in bad memory condition,
> since fill_stat is not critical for the system do you think silently
> returning from here is a good idea?
> or do you think we should handle with -ENOMEM way up.?

Hmm... presumably these 288 bytes could be allocated in
inet6_fill_ifla6_attrs() stack frame.

Also it is weird we fill all these stats for a device we just created
and never enabled : initial stats are all 0 for them.




\
 
 \ /
  Last update: 2015-08-25 18:21    [W:0.064 / U:0.172 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site