From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 26B32C433F5 for ; Tue, 30 Nov 2021 06:23:29 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4J3BxD2hdfz3cCs for ; Tue, 30 Nov 2021 17:23:28 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=huawei.com (client-ip=45.249.212.187; helo=szxga01-in.huawei.com; envelope-from=wangkefeng.wang@huawei.com; receiver=) Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4J3Bwh172Wz2xF1 for ; Tue, 30 Nov 2021 17:22:59 +1100 (AEDT) Received: from dggpemm500022.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4J3Brx04qczZdN0; Tue, 30 Nov 2021 14:19:45 +0800 (CST) Received: from dggpemm500001.china.huawei.com (7.185.36.107) by dggpemm500022.china.huawei.com (7.185.36.162) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.20; Tue, 30 Nov 2021 14:22:25 +0800 Received: from [10.174.177.243] (10.174.177.243) by dggpemm500001.china.huawei.com (7.185.36.107) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2308.20; Tue, 30 Nov 2021 14:22:23 +0800 Message-ID: <17a7ad25-d61d-d23d-29a2-c66ed7db02cc@huawei.com> Date: Tue, 30 Nov 2021 14:22:23 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.2.0 Subject: Re: [PATCH RFC 2/4] mm: percpu: Add pcpu_fc_cpu_to_node_fn_t typedef Content-Language: en-US To: Dennis Zhou References: <20211121093557.139034-1-wangkefeng.wang@huawei.com> <20211121093557.139034-3-wangkefeng.wang@huawei.com> From: Kefeng Wang In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [10.174.177.243] X-ClientProxiedBy: dggeme710-chm.china.huawei.com (10.1.199.106) To dggpemm500001.china.huawei.com (7.185.36.107) X-CFilter-Loop: Reflected X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-ia64@vger.kernel.org, dave.hansen@linux.intel.com, linux-mips@vger.kernel.org, linux-mm@kvack.org, paulus@samba.org, hpa@zytor.com, sparclinux@vger.kernel.org, cl@linux.com, will@kernel.org, linux-riscv@lists.infradead.org, x86@kernel.org, mingo@redhat.com, catalin.marinas@arm.com, aou@eecs.berkeley.edu, bp@alien8.de, paul.walmsley@sifive.com, tglx@linutronix.de, linux-arm-kernel@lists.infradead.org, tsbogend@alpha.franken.de, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, palmer@dabbelt.com, tj@kernel.org, akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org, davem@davemloft.net Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On 2021/11/30 6:40, Dennis Zhou wrote: > On Sun, Nov 21, 2021 at 05:35:55PM +0800, Kefeng Wang wrote: >> Add pcpu_fc_cpu_to_node_fn_t and pass it into pcpu_fc_alloc_fn_t, >> pcpu first chunk allocation will call it to alloc memblock on the >> corresponding node by it. >> >> Signed-off-by: Kefeng Wang >> --- >> arch/mips/mm/init.c | 12 +++++++++--- >> arch/powerpc/kernel/setup_64.c | 14 +++++++++++--- >> arch/sparc/kernel/smp_64.c | 8 +++++--- >> arch/x86/kernel/setup_percpu.c | 18 +++++++++++++----- >> drivers/base/arch_numa.c | 8 +++++--- >> include/linux/percpu.h | 7 +++++-- >> mm/percpu.c | 14 +++++++++----- >> 7 files changed, 57 insertions(+), 24 deletions(-) >> >> diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c ... >> diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c >> index 6052f5d5ded3..9a5609c821df 100644 >> --- a/arch/powerpc/kernel/setup_64.c >> +++ b/arch/powerpc/kernel/setup_64.c >> @@ -771,6 +771,12 @@ void __init emergency_stack_init(void) >> } >> >> #ifdef CONFIG_SMP >> + >> +static __init int pcpu_cpu_to_node(int cpu) >> +{ >> + return IS_ENABLED(CONFIG_NUMA) ? early_cpu_to_node(cpu) : NUMA_NO_NODE; >> +} >> + >> /** >> * pcpu_alloc_bootmem - NUMA friendly alloc_bootmem wrapper for percpu >> * @cpu: cpu to allocate for >> @@ -784,12 +790,12 @@ void __init emergency_stack_init(void) >> * RETURNS: >> * Pointer to the allocated area on success, NULL on failure. >> */ >> -static void * __init pcpu_alloc_bootmem(unsigned int cpu, size_t size, >> - size_t align) >> +static void * __init pcpu_alloc_bootmem(unsigned int cpu, size_t size, size_t align, >> + pcpu_fc_cpu_to_node_fn_t cpu_to_nd_fn) >> { >> const unsigned long goal = __pa(MAX_DMA_ADDRESS); >> #ifdef CONFIG_NUMA >> - int node = early_cpu_to_node(cpu); >> + int node = cpu_to_nd_fun(cpu); > ^ typo - cpu_to_nd_fn(). Will fix. ... >> if (rc < 0) >> diff --git a/include/linux/percpu.h b/include/linux/percpu.h >> index ae4004e7957e..41bb54715b0c 100644 >> --- a/include/linux/percpu.h >> +++ b/include/linux/percpu.h >> @@ -94,8 +94,9 @@ extern const char * const pcpu_fc_names[PCPU_FC_NR]; >> >> extern enum pcpu_fc pcpu_chosen_fc; >> >> -typedef void * (*pcpu_fc_alloc_fn_t)(unsigned int cpu, size_t size, >> - size_t align); >> +typedef int (pcpu_fc_cpu_to_node_fn_t)(int cpu); >> +typedef void * (*pcpu_fc_alloc_fn_t)(unsigned int cpu, size_t size, size_t align, >> + pcpu_fc_cpu_to_node_fn_t cpu_to_nd_fn); >> typedef void (*pcpu_fc_free_fn_t)(void *ptr, size_t size); >> typedef void (*pcpu_fc_populate_pte_fn_t)(unsigned long addr); >> typedef int (pcpu_fc_cpu_distance_fn_t)(unsigned int from, unsigned int to); >> @@ -111,6 +112,7 @@ extern void __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai, >> extern int __init pcpu_embed_first_chunk(size_t reserved_size, size_t dyn_size, >> size_t atom_size, >> pcpu_fc_cpu_distance_fn_t cpu_distance_fn, >> + pcpu_fc_cpu_to_node_fn_t cpu_to_nd_fn, >> pcpu_fc_alloc_fn_t alloc_fn, >> pcpu_fc_free_fn_t free_fn); >> #endif >> @@ -119,6 +121,7 @@ extern int __init pcpu_embed_first_chunk(size_t reserved_size, size_t dyn_size, >> extern int __init pcpu_page_first_chunk(size_t reserved_size, >> pcpu_fc_alloc_fn_t alloc_fn, >> pcpu_fc_free_fn_t free_fn, >> + pcpu_fc_cpu_to_node_fn_t cpu_to_nd_fn, >> pcpu_fc_populate_pte_fn_t populate_pte_fn); >> #endif > Be consistent here. In pcpu_setup_first_chunk() you add the > cpu_to_node() before alloc()/free() and then in pcpu_embed_first_chunk() > you add it after. I'd prefer to add it before as to keep the > cpu_distance()/cpu_to_node() grouping. Sure, will adjust the order.