From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BDEC3C433DB for ; Fri, 8 Jan 2021 13:26:40 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0BF6B235FF for ; Fri, 8 Jan 2021 13:26:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0BF6B235FF Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=chris-wilson.co.uk Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 85CFE6E827; Fri, 8 Jan 2021 13:26:39 +0000 (UTC) Received: from fireflyinternet.com (unknown [77.68.26.236]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9218C6E83C for ; Fri, 8 Jan 2021 13:26:37 +0000 (UTC) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.65.138; Received: from localhost (unverified [78.156.65.138]) by fireflyinternet.com (Firefly Internet (M1)) with ESMTP (TLS) id 23538462-1500050 for multiple; Fri, 08 Jan 2021 13:26:23 +0000 MIME-Version: 1.0 In-Reply-To: References: <20210107221724.10036-1-chris@chris-wilson.co.uk> From: Chris Wilson To: Andi Shyti Date: Fri, 08 Jan 2021 13:26:22 +0000 Message-ID: <161011238272.28368.13711350036924329757@build.alporthouse.com> User-Agent: alot/0.9 Subject: Re: [Intel-gfx] [PATCH 1/5] drm/i915/selftests: Skip unstable timing measurements X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: intel-gfx@lists.freedesktop.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Quoting Andi Shyti (2021-01-08 12:26:45) > Hi Chris, > > > diff --git a/drivers/gpu/drm/i915/selftests/intel_memory_region.c b/drivers/gpu/drm/i915/selftests/intel_memory_region.c > > index 75839db63bea..59c58a276677 100644 > > --- a/drivers/gpu/drm/i915/selftests/intel_memory_region.c > > +++ b/drivers/gpu/drm/i915/selftests/intel_memory_region.c > > @@ -852,6 +852,9 @@ static int _perf_memcpy(struct intel_memory_region *src_mr, > > } > > > > sort(t, ARRAY_SIZE(t), sizeof(*t), wrap_ktime_compare, NULL); > > + if (!t[0]) > > + continue; > > + > > are you assuming here that if t[0] is '0', also the rest of 't' > is '0'? It's sorted into ascending order with ktime_t... Hmm, s64 not u64 as I presumed. So better to check <= 0. -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx