Messages in this thread | | | From | (Eric W. Biederman) | Subject | Re: [PATCH 3/3] ftrace: add ability to only trace swapper tasks | Date | Thu, 04 Dec 2008 04:59:04 -0800 |
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Ingo Molnar <mingo@elte.hu> writes:
> * Andrew Morton <akpm@linux-foundation.org> wrote: > >> > Signed-off-by: Steven Rostedt <srostedt@redhat.com> >> >> What does this patch actually do? Is swapper currently excluded from >> tracing for undisclosed reasons and this patch permits it to be traced? >> If so, why was swapper thus excluded? Or am I totally off track? > >> > +static struct pid * const ftrace_swapper_pid = (struct pid *)1; >> >> eh? > > all side-effects of getting rid of the integer based PID namespace and > replacing them with struct pid pointers.
Thanks for asking Andrew it looks like an unnecessary side effect.
Eric
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