From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756856AbcILRe1 (ORCPT ); Mon, 12 Sep 2016 13:34:27 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:45411 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933259AbcILRKK (ORCPT ); Mon, 12 Sep 2016 13:10:10 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dasaratharaman Chandramouli , Micah Barany , Hubert Chrzaniuk , Pawel Karczewski , Len Brown , Sasha Levin Subject: [PATCH 4.4 097/192] [PATCH 101/135] intel_idle: Support for Intel Xeon Phi Processor x200 Product Family Date: Mon, 12 Sep 2016 19:00:06 +0200 Message-Id: <20160912152203.007110811@linuxfoundation.org> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20160912152158.855601725@linuxfoundation.org> References: <20160912152158.855601725@linuxfoundation.org> User-Agent: quilt/0.64 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit 281baf7a702693deaa45c98ef0c5161006b48257 ] Enables "Intel(R) Xeon Phi(TM) Processor x200 Product Family" support, formerly code-named KNL. It is based on modified Intel Atom Silvermont microarchitecture. Signed-off-by: Dasaratharaman Chandramouli [micah.barany@intel.com: adjusted values of residency and latency] Signed-off-by: Micah Barany [hubert.chrzaniuk@intel.com: removed deprecated CPUIDLE_FLAG_TIME_VALID flag] Signed-off-by: Hubert Chrzaniuk Signed-off-by: Pawel Karczewski Signed-off-by: Len Brown Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/idle/intel_idle.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) --- a/drivers/idle/intel_idle.c +++ b/drivers/idle/intel_idle.c @@ -716,6 +716,26 @@ static struct cpuidle_state avn_cstates[ { .enter = NULL } }; +static struct cpuidle_state knl_cstates[] = { + { + .name = "C1-KNL", + .desc = "MWAIT 0x00", + .flags = MWAIT2flg(0x00), + .exit_latency = 1, + .target_residency = 2, + .enter = &intel_idle, + .enter_freeze = intel_idle_freeze }, + { + .name = "C6-KNL", + .desc = "MWAIT 0x10", + .flags = MWAIT2flg(0x10) | CPUIDLE_FLAG_TLB_FLUSHED, + .exit_latency = 120, + .target_residency = 500, + .enter = &intel_idle, + .enter_freeze = intel_idle_freeze }, + { + .enter = NULL } +}; /** * intel_idle @@ -890,6 +910,10 @@ static const struct idle_cpu idle_cpu_av .disable_promotion_to_c1e = true, }; +static const struct idle_cpu idle_cpu_knl = { + .state_table = knl_cstates, +}; + #define ICPU(model, cpu) \ { X86_VENDOR_INTEL, 6, model, X86_FEATURE_MWAIT, (unsigned long)&cpu } @@ -921,6 +945,7 @@ static const struct x86_cpu_id intel_idl ICPU(0x56, idle_cpu_bdw), ICPU(0x4e, idle_cpu_skl), ICPU(0x5e, idle_cpu_skl), + ICPU(0x57, idle_cpu_knl), {} }; MODULE_DEVICE_TABLE(x86cpu, intel_idle_ids);