From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pd0-f181.google.com (mail-pd0-f181.google.com [209.85.192.181]) by kanga.kvack.org (Postfix) with ESMTP id AB1BA6B0038 for ; Thu, 16 Apr 2015 12:55:44 -0400 (EDT) Received: by pdbqd1 with SMTP id qd1so98174083pdb.2 for ; Thu, 16 Apr 2015 09:55:44 -0700 (PDT) Received: from mga09.intel.com (mga09.intel.com. [134.134.136.24]) by mx.google.com with ESMTP id qy7si12864192pab.240.2015.04.16.09.55.43 for ; Thu, 16 Apr 2015 09:55:43 -0700 (PDT) Message-ID: <552FE98F.2080705@intel.com> Date: Thu, 16 Apr 2015 09:55:43 -0700 From: Dave Hansen MIME-Version: 1.0 Subject: Re: [PATCH 1/4] x86, mm: Trace when an IPI is about to be sent References: <1429179766-26711-1-git-send-email-mgorman@suse.de> <1429179766-26711-2-git-send-email-mgorman@suse.de> In-Reply-To: <1429179766-26711-2-git-send-email-mgorman@suse.de> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Mel Gorman , Linux-MM Cc: Rik van Riel , Hugh Dickins , Minchan Kim , Andi Kleen , LKML On 04/16/2015 03:22 AM, Mel Gorman wrote: > It is easy to trace when an IPI is received to flush a TLB but harder to > detect what event sent it. This patch makes it easy to identify the source > of IPIs being transmitted for TLB flushes on x86. Looks fine to me. I think I even thought about adding this but didn't see an immediate need for it. I guess this does let you see how many IPIs are sent vs. received. Reviewed-by: Dave Hansen -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org