Message ID | 20200218190438.077772696@linuxfoundation.org |
---|---|
State | Superseded |
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 E34C0C34026 for <stable@archiver.kernel.org>; Tue, 18 Feb 2020 20:04:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BAFAD21D56 for <stable@archiver.kernel.org>; Tue, 18 Feb 2020 20:04:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582056287; bh=wAdqqFi0pp9/8Gp8KwrMsD1sYSgVs/A5mAIDtyCLqwg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=K3+luFreUnFQ7zOWxa4+R3+eSDiLNh7aZ5i3MGhENMNsLk1pbFYUNObL1RP7ZPfuE wEVZub754jWWu5HfyOzD5b1ETLRo1VXQTeYFzye9iyC1BRY1MAjNkL4ljssDfOar73 KINFrZnQyTu9a6ko+HYrDSinlLe7gtN6aIuG23ew= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729035AbgBRUC6 (ORCPT <rfc822;stable@archiver.kernel.org>); Tue, 18 Feb 2020 15:02:58 -0500 Received: from mail.kernel.org ([198.145.29.99]:43880 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729032AbgBRUC5 (ORCPT <rfc822;stable@vger.kernel.org>); Tue, 18 Feb 2020 15:02:57 -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 782C22464E; Tue, 18 Feb 2020 20:02:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582056176; bh=wAdqqFi0pp9/8Gp8KwrMsD1sYSgVs/A5mAIDtyCLqwg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BF3SOAMWqT93+4TyokxgohwhnWGm0B0QNv35qw9FJ8kKptcGg8xzAvl89LHcgvLUk GknXFdQTYQGqDpPvgnx3ADjVmWR1wSIwShO6ylqmmshpJm5FUD29WkipGIjDeRq2Zp LTaILgLPOWSMZfFKu4YHUOWkPC9yqdhZcv4id8pk= 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 5.5 63/80] perf/x86/intel: Fix inaccurate period in context switch for auto-reload Date: Tue, 18 Feb 2020 20:55:24 +0100 Message-Id: <20200218190438.077772696@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200218190432.043414522@linuxfoundation.org> References: <20200218190432.043414522@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;