Re: [PATCH 0/6] [git pull] updates for tip/tracing/ftrace

Ingo Molnar
2009-02-18T18:20:21Z

* Steven Rostedt <rostedt@goodmis.org> wrote:

>
> [ Note, I upgrade my email server which caused a bit of havoc, I'm
> just getting emails back from yesterday ]
>
>
> On Wed, 18 Feb 2009, Ingo Molnar wrote:
>
> >
> > * Ingo Molnar <mingo@elte.hu> wrote:
> >
> > > it's one of these recent commits:
> > >
> > > fa7c7f6: tracing/core: remove unused parameter in tracing_fill_pipe_page()
> > > 6eaaa5d: tracing/core: use appropriate waiting on trace_pipe
> > > 35ebf1c: ftrace: show unlimited when traceon or traceoff has no counter
> > > 73d8b8b: tracing: fix typing mistake in hint message and comments
> > > d2ef7c2: tracing: fix the return value of trace selftest
> > > af51309: tracing: use the more proper parameter
> > > b6887d7: ftrace: rename _hook to _probe
> > > 6a24a24: ftrace: clean up coding style
> > >
> > > Have not bisected it any further, excluded them from
> > > tip:master for the time being.
> >
> > actually - it's one of these:
> >
> > 37bd824: Merge branches 'tracing/ftrace' and 'tracing/urgent' into tracing/core
> > 5b058bc: tracing/function-graph-tracer: trace the idle tasks
> > 73d3fd9: ftrace: fix !CONFIG_DYNAMIC_FTRACE ftrace_swapper_pid definition
> > 97d0bb8: ftrace: fix !CONFIG_FTRACE [un_]register_ftrace_command() prototypes
> > f492d3f8: Merge branch 'tip/tracing/ftrace' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into tracing/ftrace
> > c4e2b43: Merge branches 'tracing/hw-branch-tracing' and 'tracing/power-tracer' into tracing/core
> > e110e3d: ftrace: add pretty print function for traceon and traceoff hooks
> > 809dcf2: ftrace: add pretty print to selected fuction traces
> > 8fc0c70: ftrace: show selected functions in set_ftrace_filter
> > 23b4ff3: ftrace: add traceon traceoff commands to enable/disable the buffers
> > 988ae9d: ring-buffer: add tracing_is_on to test if ring buffer is enabled
> > 59df055: ftrace: trace different functions with a different tracer
> > e6ea44e: ftrace: consolidate mutexes
>
> The above consolidate mutexs would be a prime suspect for a hard lockup.
> It may very well be that. When I finally receive your config, I'll give it
> a test. I saw you post the config by looking a web archive, but my email
> server is still in the processes of retrieving all my email from the last
> day or so.

here's a clickable link:

http://redhat.com/~mingo/misc/config-ftrace-breakage-2009-02-18

ngo