Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752106AbdGYVQb (ORCPT ); Tue, 25 Jul 2017 17:16:31 -0400 Received: from mga14.intel.com ([192.55.52.115]:7453 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752478AbdGYVNK (ORCPT ); Tue, 25 Jul 2017 17:13:10 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.40,412,1496127600"; d="scan'208";a="291390301" From: Vikas Shivappa To: vikas.shivappa@intel.com Cc: vikas.shivappa@linux.intel.com, x86@kernel.org, linux-kernel@vger.kernel.org, hpa@zytor.com, tglx@linutronix.de, peterz@infradead.org, ravi.v.shankar@intel.com, tony.luck@intel.com, fenghua.yu@intel.com, eranian@google.com, davidcc@google.com, ak@linux.intel.com, reinette.chatre@intel.com Subject: [PATCH 14/28] x86/intel_rdt: Change closid type from int to u32 Date: Tue, 25 Jul 2017 14:14:33 -0700 Message-Id: <1501017287-28083-15-git-send-email-vikas.shivappa@linux.intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1501017287-28083-1-git-send-email-vikas.shivappa@linux.intel.com> References: <1501017287-28083-1-git-send-email-vikas.shivappa@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2253 Lines: 67 OS associates a CLOSid(Class of service id) to a task by writing the high 32 bits of per CPU IA32_PQR_ASSOC MSR when a task is scheduled in. CPUID.(EAX=10H, ECX=1):EDX[15:0] enumerates the max CLOSID supported and it is zero indexed. Hence change the type to u32 from int. Signed-off-by: Vikas Shivappa --- arch/x86/include/asm/intel_rdt_sched.h | 2 +- arch/x86/kernel/cpu/intel_rdt.h | 2 +- arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 2 +- include/linux/sched.h | 2 +- 4 files changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/x86/include/asm/intel_rdt_sched.h b/arch/x86/include/asm/intel_rdt_sched.h index 4dee77b..1d8d45a 100644 --- a/arch/x86/include/asm/intel_rdt_sched.h +++ b/arch/x86/include/asm/intel_rdt_sched.h @@ -46,7 +46,7 @@ static inline void intel_rdt_sched_in(void) { if (static_branch_likely(&rdt_alloc_enable_key)) { struct intel_pqr_state *state = this_cpu_ptr(&pqr_state); - int closid; + u32 closid; /* * If this task has a closid assigned, use it. diff --git a/arch/x86/kernel/cpu/intel_rdt.h b/arch/x86/kernel/cpu/intel_rdt.h index e8fb08f..b2a2de3 100644 --- a/arch/x86/kernel/cpu/intel_rdt.h +++ b/arch/x86/kernel/cpu/intel_rdt.h @@ -72,7 +72,7 @@ struct mongroup { struct rdtgroup { struct kernfs_node *kn; struct list_head rdtgroup_list; - int closid; + u32 closid; struct cpumask cpu_mask; int flags; atomic_t waitcount; diff --git a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c index cfb2a89..843a131 100644 --- a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c +++ b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c @@ -77,7 +77,7 @@ static void closid_init(void) static int closid_alloc(void) { - int closid = ffs(closid_free_map); + u32 closid = ffs(closid_free_map); if (closid == 0) return -ENOSPC; diff --git a/include/linux/sched.h b/include/linux/sched.h index 9e31b3d..b8d0d5c 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -865,7 +865,7 @@ struct task_struct { struct list_head cg_list; #endif #ifdef CONFIG_INTEL_RDT - int closid; + u32 closid; #endif #ifdef CONFIG_FUTEX struct robust_list_head __user *robust_list; -- 1.9.1