Message ID | 20200218190432.866086714@linuxfoundation.org |
---|---|
State | New |
Headers | show
Return-Path: <SRS0=OEC5=4G=vger.kernel.org=stable-owner@kernel.org> 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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 1AD4DC34026 for <stable@archiver.kernel.org>; Tue, 18 Feb 2020 20:00:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E614024655 for <stable@archiver.kernel.org>; Tue, 18 Feb 2020 20:00:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582056012; bh=wAdqqFi0pp9/8Gp8KwrMsD1sYSgVs/A5mAIDtyCLqwg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=tZzlkoK8KxMbmy/Ke42gGURKyvHKl2gEjtq184PcQ4K8cM39VO37JhMv6sExUXdSs qIlzc3hx6k8SNR4vjWsKSgeJR7uPzWhYopsWI6rcqm4Ej2SBdlt9x7n6V1fQM6Xswh zI2ZG9QF8IL1NZGjBeWTHmogRN95/vhCTzRUptCg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728299AbgBRUAL (ORCPT <rfc822;stable@archiver.kernel.org>); Tue, 18 Feb 2020 15:00:11 -0500 Received: from mail.kernel.org ([198.145.29.99]:39276 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728286AbgBRUAK (ORCPT <rfc822;stable@vger.kernel.org>); Tue, 18 Feb 2020 15:00:10 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9AE8424125; Tue, 18 Feb 2020 20:00:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582056010; bh=wAdqqFi0pp9/8Gp8KwrMsD1sYSgVs/A5mAIDtyCLqwg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=C8C2+HZLQU+ku5DKTjUe/SZ82C9+dNg5ZpxctsK1qTylvHwW/umCaSNhUxytnrNdg c0oTvrmGH6TuVeXoedQDiaTcJJEj+q6RQjX9f2v9PN7a23syqZecGsLUlzJ38L0F92 zpzLklOaL3jh+MX8Z58/wOWmPskyn/gZ1tIP87W8= From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, stable@vger.kernel.org, Kan Liang <kan.liang@linux.intel.com>, "Peter Zijlstra (Intel)" <peterz@infradead.org>, Ingo Molnar <mingo@kernel.org> Subject: [PATCH 5.4 52/66] perf/x86/intel: Fix inaccurate period in context switch for auto-reload Date: Tue, 18 Feb 2020 20:55:19 +0100 Message-Id: <20200218190432.866086714@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200218190428.035153861@linuxfoundation.org> References: <20200218190428.035153861@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: <stable.vger.kernel.org> X-Mailing-List: stable@vger.kernel.org |
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--- a/arch/x86/events/intel/ds.c +++ b/arch/x86/events/intel/ds.c @@ -1713,6 +1713,8 @@ intel_pmu_save_and_restart_reload(struct old = ((s64)(prev_raw_count << shift) >> shift); local64_add(new - old + count * period, &event->count); + local64_set(&hwc->period_left, -new); + perf_event_update_userpage(event); return 0;