linux-kernel - Re: [PATCH 3/3] tracing/mm: Don't trace mm_page_pcpu

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Message-ID: <5540FFAE.2050502@linux.vnet.ibm.com>
Date:	Wed, 29 Apr 2015 21:28:38 +0530
From:	Shreyas B Prabhu <shreyas@...ux.vnet.ibm.com>
To:	Steven Rostedt <rostedt@...dmis.org>
CC:	Preeti Murthy <preeti.lkml@...il.com>,
	Paul McKenney <paulmck@...ux.vnet.ibm.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...hat.com>,
	aneesh.kumar@...ux.vnet.ibm.com,
	Preeti U Murthy <preeti@...ux.vnet.ibm.com>
Subject: Re: [PATCH 3/3] tracing/mm: Don't trace mm_page_pcpu_drain on offline
 cpus



On Wednesday 29 April 2015 08:48 PM, Steven Rostedt wrote:
> On Wed, 29 Apr 2015 20:19:28 +0530
> Shreyas B Prabhu <shreyas@...ux.vnet.ibm.com> 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.

Thanks,
Shreyas

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