# 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 >-- >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/ > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>