From nobody Thu Apr 2 15:41:24 2026 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5D7F9330B38 for ; Fri, 27 Mar 2026 23:02:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.21 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774652562; cv=none; b=Am9A19HUAnkS5a7HMLkVdgYxfq0ssZP807inccFBUo1OGWwqx3VI/LtwVy3aeGOdSsQvjLveS4Chvf1FpAMUFn7OIXEhBlUfcJGxnFVeqRiKLOti4i2o7XOxlcLNy83LoQGaPHCCwU0hksG7jxeL4n/WIYvUBzw0DpHNbhViMVg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774652562; c=relaxed/simple; bh=Km0j+Rqo4NuIEA773l2R+LZ+xd4ZDOhQuQfnLs2zeAQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=PUCyVvMbXJtiUN9iwKWbMTDfRKrXKAycWYhywC+854CgxwqVqmjsG7VokzvFAUk+jZ9m3xCtrxq0Uw+vXkdap7zkP+kQH7Ba4ZfcUdNzp6pkXJ4TsSRf0Gum+I3juvSPVe+drRMT1+Dm4AnjhuAfcHDDnubWHKHINpxnywa72Vs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=LxZ/xmfO; arc=none smtp.client-ip=198.175.65.21 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="LxZ/xmfO" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1774652561; x=1806188561; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Km0j+Rqo4NuIEA773l2R+LZ+xd4ZDOhQuQfnLs2zeAQ=; b=LxZ/xmfOfpRd/smzqvvcc/BGgB13DhnZJJZG+pRncjHB3yEyTiW17DGh br89ewNPzn/8f/FME+CWWOHdZ6tXithc2oymPGKZ3Wm4qY+RPbGxSR4Jx I15j6QT9T/ZTfJVoSLL1NTdNHQoKtICiRFc1jA52s09JoMXOlW0ipwbaV +R2/FRmfm602Uwq1llSLQqmc9uYVBFgmy9kVsl0tlwmDc7fLNvrOdN22f HJbqdnNovRd7pM8pOAi34l2PcSRLdPyX4Dke/hLMKPTAMNtu1SWHTu8GQ aB/a53RJVvrTdgdRH/VrTrw577V4qV1s/AoidsNypSqcCcTWkcDk6L/5/ A==; X-CSE-ConnectionGUID: SDEQpciqTdiTY/EAsisaNA== X-CSE-MsgGUID: KPDFcYgST6ux7mx6OAIcQw== X-IronPort-AV: E=McAfee;i="6800,10657,11742"; a="75613274" X-IronPort-AV: E=Sophos;i="6.23,145,1770624000"; d="scan'208";a="75613274" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Mar 2026 16:02:39 -0700 X-CSE-ConnectionGUID: z++Qj9jUQMCSjGfWCBFVTQ== X-CSE-MsgGUID: ympgy13pT5WOCsibrfBmEQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,145,1770624000"; d="scan'208";a="218816025" Received: from rfrazer-mobl3.amr.corp.intel.com (HELO agluck-desk3.home.arpa) ([10.124.222.83]) by fmviesa009-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Mar 2026 16:02:15 -0700 From: Tony Luck To: Fenghua Yu , Reinette Chatre , Maciej Wieczor-Retman , Peter Newman , James Morse , Babu Moger , Drew Fustini , Dave Martin , Chen Yu , David E Box , x86@kernel.org Cc: linux-kernel@vger.kernel.org, patches@lists.linux.dev, Tony Luck Subject: [PATCH v3 2/7] fs/resctrl: Add interface to disable a monitor event Date: Fri, 27 Mar 2026 16:02:03 -0700 Message-ID: <20260327230208.18094-3-tony.luck@intel.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260327230208.18094-1-tony.luck@intel.com> References: <20260323163452.25044-1-tony.luck@intel.com> <20260327230208.18094-1-tony.luck@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Architecture code can ask file system code to enable events. But there is no way to clean up and disable events. Add resctrl_disable_mon_event(). Signed-off-by: Tony Luck --- include/linux/resctrl.h | 1 + fs/resctrl/monitor.c | 12 ++++++++++++ 2 files changed, 13 insertions(+) diff --git a/include/linux/resctrl.h b/include/linux/resctrl.h index 006e57fd7ca5..b312aaf76974 100644 --- a/include/linux/resctrl.h +++ b/include/linux/resctrl.h @@ -416,6 +416,7 @@ int resctrl_arch_update_domains(struct rdt_resource *r,= u32 closid); =20 bool resctrl_enable_mon_event(enum resctrl_event_id eventid, bool any_cpu, unsigned int binary_bits, void *arch_priv); +void resctrl_disable_mon_event(enum resctrl_event_id eventid); =20 bool resctrl_is_mon_event_enabled(enum resctrl_event_id eventid); =20 diff --git a/fs/resctrl/monitor.c b/fs/resctrl/monitor.c index 49f3f6b846b2..0def41c26edc 100644 --- a/fs/resctrl/monitor.c +++ b/fs/resctrl/monitor.c @@ -1010,6 +1010,18 @@ bool resctrl_enable_mon_event(enum resctrl_event_id = eventid, bool any_cpu, return true; } =20 +void resctrl_disable_mon_event(enum resctrl_event_id eventid) +{ + if (WARN_ON_ONCE(eventid < QOS_FIRST_EVENT || eventid >=3D QOS_NUM_EVENTS= )) + return; + if (!mon_event_all[eventid].enabled) { + pr_warn("Repeat disable for event %d\n", eventid); + return; + } + + mon_event_all[eventid].enabled =3D false; +} + bool resctrl_is_mon_event_enabled(enum resctrl_event_id eventid) { return eventid >=3D QOS_FIRST_EVENT && eventid < QOS_NUM_EVENTS && --=20 2.53.0