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=-10.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT 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 CFB56C43441 for ; Thu, 29 Nov 2018 17:07:07 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 A045D20863 for ; Thu, 29 Nov 2018 17:07:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="rcBZsEfm" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A045D20863 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=xvhBZFYSkk1ffyAUPRqa3IBXUKAjOJi/mduObYjjLJk=; b=rcBZsEfmYv7b0S H5NS8oP14Qac8LClhPWFRfmo9eX6iYkHINL0uFO/0CZTOL8RF7RP15k1L9ixnQBGsM6WByQank2uO GOxPK1jcgMelhih+y8e8sj31e1ykN0MtSIqWFciwNCfDtWqr3eVDGrlXGvQ4xc/kMPPPr20/Eaz4/ 8v1+XSbfvjqZmvtLvpRJ/lo0pkgWG3qHdrSfSACuS3YfGQLIspLv1+mDE1LPR2+fw0rD3zPzEyY9l L699ORrCCg64WjiTPKPChCQk8E3vA+PO349NmtDBVA0FTQqrM1PFUGjnJnMfNwPz6K0J9sJmz6xkV YKvAF3Bir0fqnD3PlDhQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gSPmG-0001HR-4R; Thu, 29 Nov 2018 17:07:00 +0000 Received: from foss.arm.com ([217.140.101.70]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gSPlP-0000Rp-IB for linux-arm-kernel@lists.infradead.org; Thu, 29 Nov 2018 17:06:14 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 8F7B615AD; Thu, 29 Nov 2018 09:06:04 -0800 (PST) Received: from e119884-lin.cambridge.arm.com (e119884-lin.cambridge.arm.com [10.1.196.72]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 7C8473F59C; Thu, 29 Nov 2018 09:06:02 -0800 (PST) From: Vincenzo Frascino To: linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 04/28] kernel: Add masks support for Raw and NTP time Date: Thu, 29 Nov 2018 17:05:06 +0000 Message-Id: <20181129170530.37789-5-vincenzo.frascino@arm.com> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20181129170530.37789-1-vincenzo.frascino@arm.com> References: <20181129170530.37789-1-vincenzo.frascino@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181129_090608_452628_5D46E39F X-CRM114-Status: GOOD ( 12.83 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Arnd Bergmann , Catalin Marinas , Daniel Lezcano , Will Deacon , Russell King , Ralf Baechle , Mark Salyzyn , Paul Burton , Thomas Gleixner , Peter Collingbourne Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Depending on the clocksource selected there can be supported a different resolution hence we require a mask to be applied to the time calculation. This patch exposes the mask in the datapage for Raw and NTP adjusted clock. Cc: Arnd Bergmann Signed-off-by: Vincenzo Frascino --- include/vdso/datapage.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/vdso/datapage.h b/include/vdso/datapage.h index d50a108afaed..0a7bdccf5773 100644 --- a/include/vdso/datapage.h +++ b/include/vdso/datapage.h @@ -34,6 +34,8 @@ struct vdso_data { __u64 wtm_clock_nsec; __u64 btm_nsec; /* Monotonic to boot time */ __u64 tai_sec; /* International Atomic Time */ + __u64 cs_mono_mask; /* NTP-adjusted clocksource mask */ + __u64 cs_raw_mask; /* Raw clocksource mask */ __u32 tb_seq_count; /* Timebase sequence counter */ __u32 cs_mono_mult; /* NTP-adjusted clocksource multiplier */ __u32 cs_shift; /* Clocksource shift (mono = raw) */ -- 2.19.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel