Re: Regression from 2.6.36

[azurIt]

# mount -t debugfs none /sys/kernel/debug
mount: mount point /sys/kernel/debug does not exist

# mkdir /sys/kernel/debug
mkdir: cannot create directory `/sys/kernel/debug': No such file or directory


config file used for testing is here:
http://watchdog.sk/lkml/config


azur


______________________________________________________________
> Od: "Mel Gorman" <mgorman@xxxxxxx>
> Komu: azurIt <azurit@xxxxxxxx>
> DÃtum: 15.04.2011 12:47
> Predmet: Re: Regression from 2.6.36
>
> CC: "Mel Gorman" <mel@xxxxxxxxx>, "Andrew Morton" <akpm@xxxxxxxxxxxxxxxxxxxx>, "Eric Dumazet" <eric.dumazet@xxxxxxxxx>, "Changli Gao" <xiaosuo@xxxxxxxxx>, "Am?rico Wang" <xiyou.wangcong@xxxxxxxxx>, "Jiri Slaby" <jslaby@xxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, "Jiri Slaby" <jirislaby@xxxxxxxxx>
>On Fri, Apr 15, 2011 at 11:59:03AM +0200, azurIt wrote:
>> 
>> Also this new patch is working fine and fixing the problem.
>> 
>> Mel, I cannot run your script:
>> # perl watch-highorder-latency.pl
>> Failed to open /sys/kernel/debug/tracing/set_ftrace_filter for writing at watch-highorder-latency.pl line 17.
>> 
>> # ls -ld /sys/kernel/debug/
>> ls: cannot access /sys/kernel/debug/: No such file or directory
>> 
>
>mount -t debugfs none /sys/kernel/debug
>
>If it still doesn't work, sysfs or the necessary FTRACE options are
>not enabled on your .config. I'll give you a list if that is the case.
>
>Thanks.
>
>-- 
>Mel Gorman
>SUSE Labs
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