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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by BN8NAM11FT071.mail.protection.outlook.com (10.13.177.92) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.5723.20 via Frontend Transport; Mon, 17 Oct 2022 22:27:29 +0000 Received: from [127.0.1.1] (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Mon, 17 Oct 2022 17:27:27 -0500 Subject: [PATCH v7 11/12] x86/resctrl: Replace smp_call_function_many() with on_each_cpu_mask() From: Babu Moger To: , , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , Date: Mon, 17 Oct 2022 17:27:27 -0500 Message-ID: <166604564729.5345.14834531439162556392.stgit@bmoger-ubuntu> In-Reply-To: <166604543832.5345.9696970469830919982.stgit@bmoger-ubuntu> References: <166604543832.5345.9696970469830919982.stgit@bmoger-ubuntu> User-Agent: StGit/1.1.dev103+g5369f4c MIME-Version: 1.0 Content-Type: text/plain; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Oct 2022 22:27:29.6295 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 29b24d8a-a7df-4b67-945a-08dab08ec6fe X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT071.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5042 Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org The call on_each_cpu_mask() can run the function on each CPU specified=0A= by cpumask, which may include the local processor. So, replace the call=0A= smp_call_function_many() with on_each_cpu_mask() to simplify the code.=0A= =0A= Signed-off-by: Babu Moger =0A= ---=0A= arch/x86/kernel/cpu/resctrl/rdtgroup.c | 29 ++++++++--------------------= -=0A= 1 file changed, 8 insertions(+), 21 deletions(-)=0A= =0A= diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/r= esctrl/rdtgroup.c=0A= index e744db5dc057..4f8a1c9c3e7a 100644=0A= --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c=0A= +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c=0A= @@ -325,12 +325,7 @@ static void update_cpu_closid_rmid(void *info)=0A= static void=0A= update_closid_rmid(const struct cpumask *cpu_mask, struct rdtgroup *r)=0A= {=0A= - int cpu =3D get_cpu();=0A= -=0A= - if (cpumask_test_cpu(cpu, cpu_mask))=0A= - update_cpu_closid_rmid(r);=0A= - smp_call_function_many(cpu_mask, update_cpu_closid_rmid, r, 1);=0A= - put_cpu();=0A= + on_each_cpu_mask(cpu_mask, update_cpu_closid_rmid, r, 1);=0A= }=0A= =0A= static int cpus_mon_write(struct rdtgroup *rdtgrp, cpumask_var_t newmask,= =0A= @@ -2131,13 +2126,9 @@ static int set_cache_qos_cfg(int level, bool enable)= =0A= /* Pick one CPU from each domain instance to update MSR */=0A= cpumask_set_cpu(cpumask_any(&d->cpu_mask), cpu_mask);=0A= }=0A= - cpu =3D get_cpu();=0A= - /* Update QOS_CFG MSR on this cpu if it's in cpu_mask. */=0A= - if (cpumask_test_cpu(cpu, cpu_mask))=0A= - update(&enable);=0A= - /* Update QOS_CFG MSR on all other cpus in cpu_mask. */=0A= - smp_call_function_many(cpu_mask, update, &enable, 1);=0A= - put_cpu();=0A= +=0A= + /* Update QOS_CFG MSR on all the CPUs in cpu_mask */=0A= + on_each_cpu_mask(cpu_mask, update, &enable, 1);=0A= =0A= free_cpumask_var(cpu_mask);=0A= =0A= @@ -2614,7 +2605,7 @@ static int reset_all_ctrls(struct rdt_resource *r)=0A= struct msr_param msr_param;=0A= cpumask_var_t cpu_mask;=0A= struct rdt_domain *d;=0A= - int i, cpu;=0A= + int i;=0A= =0A= if (!zalloc_cpumask_var(&cpu_mask, GFP_KERNEL))=0A= return -ENOMEM;=0A= @@ -2635,13 +2626,9 @@ static int reset_all_ctrls(struct rdt_resource *r)= =0A= for (i =3D 0; i < hw_res->num_closid; i++)=0A= hw_dom->ctrl_val[i] =3D r->default_ctrl;=0A= }=0A= - cpu =3D get_cpu();=0A= - /* Update CBM on this cpu if it's in cpu_mask. */=0A= - if (cpumask_test_cpu(cpu, cpu_mask))=0A= - rdt_ctrl_update(&msr_param);=0A= - /* Update CBM on all other cpus in cpu_mask. */=0A= - smp_call_function_many(cpu_mask, rdt_ctrl_update, &msr_param, 1);=0A= - put_cpu();=0A= +=0A= + /* Update CBM on all the CPUs in cpu_mask */=0A= + on_each_cpu_mask(cpu_mask, rdt_ctrl_update, &msr_param, 1);=0A= =0A= free_cpumask_var(cpu_mask);=0A= =0A= =0A=