Re: Regression from 2.6.36

[Mel Gorman]

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