Re: [PATCH 3/3] tracing/mm: Don't trace mm_page_pcpu_drain on offline cpus

From: Steven Rostedt
Date: Wed Apr 29 2015 - 13:09:05 EST


On Wed, 29 Apr 2015 21:28:38 +0530
Shreyas B Prabhu <shreyas@xxxxxxxxxxxxxxxxxx> wrote:

>
>
> On Wednesday 29 April 2015 08:48 PM, Steven Rostedt wrote:
> > On Wed, 29 Apr 2015 20:19:28 +0530
> > Shreyas B Prabhu <shreyas@xxxxxxxxxxxxxxxxxx> wrote:
> >
> >> IIUC there is no existing macro which can both add a condition and
> >> override printk format, hence the fall back to TRACE_EVENT_CONDITION.
> >
> > Hmm, want me to send you a patch that changes that?
> >
> I am not sure if its worth the effort now. It doesn't look like any
> other trace point apart from the above use case will benefit from it.
> Only smbus_write and smbus_reply seem to come close. But even they need
> separate TP_fast_assign.

It shouldn't be a problem to implement. But I'm currently cleaning up
those files, and any changes will cause nasty conflicts.

Lets do this. Push the current changes as is, and when I get around to
adding a DEFINE_EVENT_PRINT_CONDITION(), we can modify that code to use
it.

-- Steve

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