From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752478AbeCLI1s (ORCPT ); Mon, 12 Mar 2018 04:27:48 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:59230 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751254AbeCLI1r (ORCPT ); Mon, 12 Mar 2018 04:27:47 -0400 Date: Mon, 12 Mar 2018 09:27:41 +0100 From: Peter Zijlstra To: Jason Vas Dias Cc: x86@kernel.org, LKML , Thomas Gleixner , andi Subject: Re: [PATCH v4.16-rc4 2/2] x86/vdso: on Intel, VDSO should handle CLOCK_MONOTONIC_RAW Message-ID: <20180312082741.GD4064@hirez.programming.kicks-ass.net> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.3 (2018-01-21) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 12, 2018 at 07:01:20AM +0000, Jason Vas Dias wrote: > Sometimes, particularly when correlating elapsed time to performance > counter values, So what actual problem are you tring to solve here? Perf can already give you sample time in various clocks, including MONOTONIC_RAW.