[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Message-ID: <20110421213724.GD24898@home.goodmis.org>
Date: Thu, 21 Apr 2011 17:37:24 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: Jan Kiszka <jan.kiszka@....de>
Cc: David Ahern <dsahern@...il.com>,
LKML <linux-kernel@...r.kernel.org>,
KVM mailing list <kvm@...r.kernel.org>
Subject: Re: trace-cmd errors on kvm events
On Fri, Apr 08, 2011 at 11:07:23PM +0200, Jan Kiszka wrote:
> On 2011-04-08 20:53, David Ahern wrote:
> > 2.6.38.2 kernel with trace-cmd git pulled this morning:
> >
> > trace-cmd record -e kvm
> >
> > trace-cmd report 2>&1 | less
> >
> > trace-cmd: No such file or directory
>
> Does this error come from trace-cmd failing to find its kvm plugin?
> Check what strace -e open says.
>
I need to spend some time and fix it. That "No such file or directory"
is from the way trace-cmd does error handling. It checks if errno is set
and if so, it prints out perror(). What usually happens is I do a stat()
on a file which sets errno, and forget about it. Then if trace-cmd finds
some internal error, it calls the warning() message, which then prints
out the stale errno.
-- Steve
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists