From patchwork Thu Oct 10 15:22:01 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kaixiong Yu X-Patchwork-Id: 13830176 Received: from szxga07-in.huawei.com (szxga07-in.huawei.com [45.249.212.35]) (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 1379B1CB322; Thu, 10 Oct 2024 14:11:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.35 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728569500; cv=none; b=lv4VdsA9Hqjr0Q41y40VTNRzZUjZkYzdOfQ3kQiA6x5LwTbjJppuwfIKPvUnAXT2kLSICOsI0YP8ARncDmJrzLcmhmBoiIhrvl583m/JqOM8Xpxc1n4yuZNO9e4yoj3Sbl0TF+/t9VU4t1kD1mk39oZxW45hJ3JcJ0B2yPknYK8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728569500; c=relaxed/simple; bh=UJ+x75BBdiY+1MErZMJVo7hyFVYKnh1GuT3vNeeZeyQ=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=uQtxqsQII3f7ZSPjxtTnzA66Y2Cz/GQFrI8dUfqWtnsdirJDV/nWjzKG0K2cgl8ttap+Cl3rtylR0WEtmsz2rFBoKdjIOBfzyYViPrHgHqsva7rIwBFrtog3b6tmursveSkqDGaiA8IGc/ZDvkVF3we+grWLlEuSL5drnqv5hFU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.35 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.163.17]) by szxga07-in.huawei.com (SkyGuard) with ESMTP id 4XPWqk51SGz1SCPQ; Thu, 10 Oct 2024 22:10:26 +0800 (CST) Received: from kwepemh100016.china.huawei.com (unknown [7.202.181.102]) by mail.maildlp.com (Postfix) with ESMTPS id F2A901A0188; Thu, 10 Oct 2024 22:11:33 +0800 (CST) Received: from huawei.com (10.175.113.32) by kwepemh100016.china.huawei.com (7.202.181.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 10 Oct 2024 22:11:30 +0800 From: Kaixiong Yu To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v3 -next 01/15] mm: vmstat: move sysctls to mm/vmstat.c Date: Thu, 10 Oct 2024 23:22:01 +0800 Message-ID: <20241010152215.3025842-2-yukaixiong@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241010152215.3025842-1-yukaixiong@huawei.com> References: <20241010152215.3025842-1-yukaixiong@huawei.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemh100016.china.huawei.com (7.202.181.102) This moves all vmstat related sysctls to its own file, removes useless extern variable declarations, and do some related clean-ups. To avoid compiler warnings when CONFIG_PROC_FS is not defined, add the macro definition CONFIG_PROC_FS ahead CONFIG_NUMA in vmstat.c. Signed-off-by: Kaixiong Yu Reviewed-by: Kees Cook --- v3: - change the title - change sysctl_stat_interval to static type --- include/linux/vmstat.h | 11 ----------- kernel/sysctl.c | 28 --------------------------- mm/vmstat.c | 44 ++++++++++++++++++++++++++++++++++++++---- 3 files changed, 40 insertions(+), 43 deletions(-) diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h index d2761bf8ff32..b2ccb6845595 100644 --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -10,15 +10,8 @@ #include #include -extern int sysctl_stat_interval; - #ifdef CONFIG_NUMA -#define ENABLE_NUMA_STAT 1 -#define DISABLE_NUMA_STAT 0 -extern int sysctl_vm_numa_stat; DECLARE_STATIC_KEY_TRUE(vm_numa_stat_key); -int sysctl_vm_numa_stat_handler(const struct ctl_table *table, int write, - void *buffer, size_t *length, loff_t *ppos); #endif struct reclaim_stat { @@ -304,10 +297,6 @@ void quiet_vmstat(void); void cpu_vm_stats_fold(int cpu); void refresh_zone_stat_thresholds(void); -struct ctl_table; -int vmstat_refresh(const struct ctl_table *, int write, void *buffer, size_t *lenp, - loff_t *ppos); - void drain_zonestat(struct zone *zone, struct per_cpu_zonestat *); int calculate_pressure_threshold(struct zone *zone); diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 79e6cb1d5c48..726b866af57b 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -49,7 +49,6 @@ #include #include #include -#include #include #include #include @@ -2081,17 +2080,6 @@ static struct ctl_table vm_table[] = { .extra1 = SYSCTL_ZERO, .extra2 = SYSCTL_TWO_HUNDRED, }, -#ifdef CONFIG_NUMA - { - .procname = "numa_stat", - .data = &sysctl_vm_numa_stat, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = sysctl_vm_numa_stat_handler, - .extra1 = SYSCTL_ZERO, - .extra2 = SYSCTL_ONE, - }, -#endif { .procname = "drop_caches", .data = &sysctl_drop_caches, @@ -2157,22 +2145,6 @@ static struct ctl_table vm_table[] = { .extra1 = SYSCTL_ZERO, }, #endif -#ifdef CONFIG_SMP - { - .procname = "stat_interval", - .data = &sysctl_stat_interval, - .maxlen = sizeof(sysctl_stat_interval), - .mode = 0644, - .proc_handler = proc_dointvec_jiffies, - }, - { - .procname = "stat_refresh", - .data = NULL, - .maxlen = 0, - .mode = 0600, - .proc_handler = vmstat_refresh, - }, -#endif #ifdef CONFIG_MMU { .procname = "mmap_min_addr", diff --git a/mm/vmstat.c b/mm/vmstat.c index bb081ae4d0ae..25cb31545bc0 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -31,8 +31,10 @@ #include "internal.h" +#ifdef CONFIG_PROC_FS #ifdef CONFIG_NUMA -int sysctl_vm_numa_stat = ENABLE_NUMA_STAT; +#define ENABLE_NUMA_STAT 1 +static int sysctl_vm_numa_stat = ENABLE_NUMA_STAT; /* zero numa counters within a zone */ static void zero_zone_numa_counters(struct zone *zone) @@ -74,7 +76,7 @@ static void invalid_numa_statistics(void) static DEFINE_MUTEX(vm_numa_stat_lock); -int sysctl_vm_numa_stat_handler(const struct ctl_table *table, int write, +static int sysctl_vm_numa_stat_handler(const struct ctl_table *table, int write, void *buffer, size_t *length, loff_t *ppos) { int ret, oldval; @@ -102,6 +104,7 @@ int sysctl_vm_numa_stat_handler(const struct ctl_table *table, int write, return ret; } #endif +#endif /* CONFIG_PROC_FS */ #ifdef CONFIG_VM_EVENT_COUNTERS DEFINE_PER_CPU(struct vm_event_state, vm_event_states) = {{0}}; @@ -1928,7 +1931,7 @@ static const struct seq_operations vmstat_op = { #ifdef CONFIG_SMP static DEFINE_PER_CPU(struct delayed_work, vmstat_work); -int sysctl_stat_interval __read_mostly = HZ; +static int sysctl_stat_interval __read_mostly = HZ; static int vmstat_late_init_done; #ifdef CONFIG_PROC_FS @@ -1937,7 +1940,7 @@ static void refresh_vm_stats(struct work_struct *work) refresh_cpu_vm_stats(true); } -int vmstat_refresh(const struct ctl_table *table, int write, +static int vmstat_refresh(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { long val; @@ -2175,6 +2178,38 @@ static int __init vmstat_late_init(void) late_initcall(vmstat_late_init); #endif +#ifdef CONFIG_PROC_FS +static struct ctl_table vmstat_table[] = { +#ifdef CONFIG_SMP + { + .procname = "stat_interval", + .data = &sysctl_stat_interval, + .maxlen = sizeof(sysctl_stat_interval), + .mode = 0644, + .proc_handler = proc_dointvec_jiffies, + }, + { + .procname = "stat_refresh", + .data = NULL, + .maxlen = 0, + .mode = 0600, + .proc_handler = vmstat_refresh, + }, +#endif +#ifdef CONFIG_NUMA + { + .procname = "numa_stat", + .data = &sysctl_vm_numa_stat, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = sysctl_vm_numa_stat_handler, + .extra1 = SYSCTL_ZERO, + .extra2 = SYSCTL_ONE, + }, +#endif +}; +#endif + struct workqueue_struct *mm_percpu_wq; void __init init_mm_internals(void) @@ -2206,6 +2241,7 @@ void __init init_mm_internals(void) proc_create_seq("pagetypeinfo", 0400, NULL, &pagetypeinfo_op); proc_create_seq("vmstat", 0444, NULL, &vmstat_op); proc_create_seq("zoneinfo", 0444, NULL, &zoneinfo_op); + register_sysctl_init("vm", vmstat_table); #endif } From patchwork Thu Oct 10 15:22:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kaixiong Yu X-Patchwork-Id: 13830177 Received: from szxga03-in.huawei.com (szxga03-in.huawei.com [45.249.212.189]) (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 6D89B1CBEBF; Thu, 10 Oct 2024 14:11:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.189 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; 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Thu, 10 Oct 2024 22:10:59 +0800 (CST) Received: from kwepemh100016.china.huawei.com (unknown [7.202.181.102]) by mail.maildlp.com (Postfix) with ESMTPS id 2FB1E180105; Thu, 10 Oct 2024 22:11:37 +0800 (CST) Received: from huawei.com (10.175.113.32) by kwepemh100016.china.huawei.com (7.202.181.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 10 Oct 2024 22:11:33 +0800 From: Kaixiong Yu To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v3 -next 02/15] mm: filemap: move sysctl to mm/filemap.c Date: Thu, 10 Oct 2024 23:22:02 +0800 Message-ID: <20241010152215.3025842-3-yukaixiong@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241010152215.3025842-1-yukaixiong@huawei.com> References: <20241010152215.3025842-1-yukaixiong@huawei.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemh100016.china.huawei.com (7.202.181.102) This moves the filemap related sysctl to mm/filemap.c, and removes the redundant external variable declaration. Signed-off-by: Kaixiong Yu Reviewed-by: Kees Cook --- v3: - change the title --- include/linux/mm.h | 2 -- kernel/sysctl.c | 8 -------- mm/filemap.c | 18 +++++++++++++++--- 3 files changed, 15 insertions(+), 13 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index df0a5eac66b7..a3c3a7d64407 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -39,8 +39,6 @@ struct user_struct; struct pt_regs; struct folio_batch; -extern int sysctl_page_lock_unfairness; - void mm_core_init(void); void init_mm_internals(void); diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 726b866af57b..2a875b739054 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -2089,14 +2089,6 @@ static struct ctl_table vm_table[] = { .extra1 = SYSCTL_ONE, .extra2 = SYSCTL_FOUR, }, - { - .procname = "page_lock_unfairness", - .data = &sysctl_page_lock_unfairness, - .maxlen = sizeof(sysctl_page_lock_unfairness), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = SYSCTL_ZERO, - }, #ifdef CONFIG_MMU { .procname = "max_map_count", diff --git a/mm/filemap.c b/mm/filemap.c index 429895f1a564..0d4adf8068ca 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -47,6 +47,7 @@ #include #include #include +#include #include #include #include "internal.h" @@ -1069,6 +1070,19 @@ static wait_queue_head_t *folio_waitqueue(struct folio *folio) return &folio_wait_table[hash_ptr(folio, PAGE_WAIT_TABLE_BITS)]; } +/* How many times do we accept lock stealing from under a waiter? */ +static int sysctl_page_lock_unfairness = 5; +static struct ctl_table filemap_sysctl_table[] = { + { + .procname = "page_lock_unfairness", + .data = &sysctl_page_lock_unfairness, + .maxlen = sizeof(sysctl_page_lock_unfairness), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = SYSCTL_ZERO, + } +}; + void __init pagecache_init(void) { int i; @@ -1077,6 +1091,7 @@ void __init pagecache_init(void) init_waitqueue_head(&folio_wait_table[i]); page_writeback_init(); + register_sysctl_init("vm", filemap_sysctl_table); } /* @@ -1224,9 +1239,6 @@ static inline bool folio_trylock_flag(struct folio *folio, int bit_nr, return true; } -/* How many times do we accept lock stealing from under a waiter? */ -int sysctl_page_lock_unfairness = 5; - static inline int folio_wait_bit_common(struct folio *folio, int bit_nr, int state, enum behavior behavior) { From patchwork Thu Oct 10 15:22:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kaixiong Yu X-Patchwork-Id: 13830178 Received: from szxga04-in.huawei.com (szxga04-in.huawei.com [45.249.212.190]) (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 786D31CC8BB; Thu, 10 Oct 2024 14:11:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.190 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728569505; cv=none; b=IilkoAX45VVy+vOM9+iBsFHubwOn/xog81x+8lzZ9qCKqdntG13id+mC1Y4G7GCWtylbSL2rpcvRD4/IvSbT5xNAL7SL1NVK8YE9i4GPCmDqdI1XKYfiNNtT+T5d8d02MnLkkGfyB0x7yf89Hg7z/Ppw0O6Fb38nKz6V4ataT8I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728569505; c=relaxed/simple; bh=9HnIVvJJlsJgSWHst+FWrkiqo5XC5TruyMNtUEFlJFY=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=dfnIwgf4+bRkP/4M7/891HQJDSASwLDBmK2B3P/sX3h6/SRPPykTGNzrnRxgm2Y7/DueBt9clrynE1YOnRW99KqSV5KA8SyOZhB9cxgeVoWqcCdhYlNwOcaRhuarQJKrinajTfATYcZV8xmbrjCbpjTNq8HOXBFYrtkwv/vlYDs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.190 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.163.44]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4XPWqs4mTgz2DdD3; Thu, 10 Oct 2024 22:10:33 +0800 (CST) Received: from kwepemh100016.china.huawei.com (unknown [7.202.181.102]) by mail.maildlp.com (Postfix) with ESMTPS id 5C4C61400DC; Thu, 10 Oct 2024 22:11:40 +0800 (CST) Received: from huawei.com (10.175.113.32) by kwepemh100016.china.huawei.com (7.202.181.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 10 Oct 2024 22:11:37 +0800 From: Kaixiong Yu To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v3 -next 03/15] mm: swap: move sysctl to mm/swap.c Date: Thu, 10 Oct 2024 23:22:03 +0800 Message-ID: <20241010152215.3025842-4-yukaixiong@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241010152215.3025842-1-yukaixiong@huawei.com> References: <20241010152215.3025842-1-yukaixiong@huawei.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemh100016.china.huawei.com (7.202.181.102) The page-cluster belongs to mm/swap.c, move it to mm/swap.c . Removes the redundant external variable declaration and unneeded include(linux/swap.h). Signed-off-by: Kaixiong Yu Reviewed-by: Kees Cook --- v3: - change the title --- include/linux/mm.h | 2 -- kernel/sysctl.c | 10 ---------- mm/swap.c | 16 +++++++++++++++- mm/swap.h | 1 + 4 files changed, 16 insertions(+), 13 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index a3c3a7d64407..7c46de4290da 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -75,8 +75,6 @@ static inline void totalram_pages_add(long count) } extern void * high_memory; -extern int page_cluster; -extern const int page_cluster_max; #ifdef CONFIG_SYSCTL extern int sysctl_legacy_va_layout; diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 2a875b739054..9fad501311a1 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -21,7 +21,6 @@ #include #include -#include #include #include #include @@ -2054,15 +2053,6 @@ static struct ctl_table vm_table[] = { .mode = 0644, .proc_handler = overcommit_kbytes_handler, }, - { - .procname = "page-cluster", - .data = &page_cluster, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = SYSCTL_ZERO, - .extra2 = (void *)&page_cluster_max, - }, { .procname = "dirtytime_expire_seconds", .data = &dirtytime_expire_interval, diff --git a/mm/swap.c b/mm/swap.c index 835bdf324b76..2f7d415e66a3 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -45,7 +45,7 @@ /* How many pages do we try to swap or page in/out together? As a power of 2 */ int page_cluster; -const int page_cluster_max = 31; +static const int page_cluster_max = 31; struct cpu_fbatches { /* @@ -1089,6 +1089,18 @@ void folio_batch_remove_exceptionals(struct folio_batch *fbatch) fbatch->nr = j; } +static struct ctl_table swap_sysctl_table[] = { + { + .procname = "page-cluster", + .data = &page_cluster, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = SYSCTL_ZERO, + .extra2 = (void *)&page_cluster_max, + } +}; + /* * Perform any setup for the swap system */ @@ -1105,4 +1117,6 @@ void __init swap_setup(void) * Right now other parts of the system means that we * _really_ don't want to cluster much more */ + + register_sysctl_init("vm", swap_sysctl_table); } diff --git a/mm/swap.h b/mm/swap.h index ad2f121de970..274dcc6219a0 100644 --- a/mm/swap.h +++ b/mm/swap.h @@ -3,6 +3,7 @@ #define _MM_SWAP_H struct mempolicy; +extern int page_cluster; #ifdef CONFIG_SWAP #include /* for swp_offset */ From patchwork Thu Oct 10 15:22:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kaixiong Yu X-Patchwork-Id: 13830179 Received: from szxga05-in.huawei.com (szxga05-in.huawei.com [45.249.212.191]) (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 C979A1CCEE2; Thu, 10 Oct 2024 14:11:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.191 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728569509; cv=none; b=RbL5b3huaKKhyhOpLBGCpzuJ2phRaMAWJTXfHdU46V5pihKnhIgxtlkEBnIkUyN5OKJDdSOjLV5g427KaDqDX1nDcRRB9DFo7/d24+3R+zpcRddsp5K3AWhwfyBWd5v4y/a8pdCZ9BiSDYOl1J0faL/3K4MJQpEZc71zR9Zv/Es= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728569509; c=relaxed/simple; bh=naPOESKaE5CdzE8pdiFCJO/doUvAnVUTkP9QEjwlvNw=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=iMEf1iXj3TZrOeKCQsbGyd4gt4xtzKm0nEV4D5abWdZTFUSJedNQnq00bi7wrWXc8tsEJSJ7KBFwbZwaoo065f7RVT2/4FYNkHp5UTiPnSx+h7PvYTHqmgvXPkRwhhm8VzCTg/+aLT8v4WPvAMAlNfddN4FXa/qN8SPL3PIS+t0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.191 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.163.44]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4XPWmS55yMz1HKl3; Thu, 10 Oct 2024 22:07:36 +0800 (CST) Received: from kwepemh100016.china.huawei.com (unknown [7.202.181.102]) by mail.maildlp.com (Postfix) with ESMTPS id A35011400DC; Thu, 10 Oct 2024 22:11:43 +0800 (CST) Received: from huawei.com (10.175.113.32) by kwepemh100016.china.huawei.com (7.202.181.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 10 Oct 2024 22:11:40 +0800 From: Kaixiong Yu To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v3 -next 04/15] mm: vmscan: move vmscan sysctls to mm/vmscan.c Date: Thu, 10 Oct 2024 23:22:04 +0800 Message-ID: <20241010152215.3025842-5-yukaixiong@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241010152215.3025842-1-yukaixiong@huawei.com> References: <20241010152215.3025842-1-yukaixiong@huawei.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemh100016.china.huawei.com (7.202.181.102) This moves vm_swappiness and zone_reclaim_mode to mm/vmscan.c, as part of the kernel/sysctl.c cleaning, also moves some external variable declarations and function declarations from include/linux/swap.h into mm/internal.h. Signed-off-by: Kaixiong Yu Reviewed-by: Kees Cook --- v3: - change the title --- include/linux/swap.h | 9 --------- kernel/sysctl.c | 19 ------------------- mm/internal.h | 10 ++++++++++ mm/vmscan.c | 23 +++++++++++++++++++++++ 4 files changed, 33 insertions(+), 28 deletions(-) diff --git a/include/linux/swap.h b/include/linux/swap.h index ca533b478c21..c95fb8d87b05 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -425,19 +425,10 @@ extern int vm_swappiness; long remove_mapping(struct address_space *mapping, struct folio *folio); #ifdef CONFIG_NUMA -extern int node_reclaim_mode; extern int sysctl_min_unmapped_ratio; extern int sysctl_min_slab_ratio; -#else -#define node_reclaim_mode 0 #endif -static inline bool node_reclaim_enabled(void) -{ - /* Is any node_reclaim_mode bit set? */ - return node_reclaim_mode & (RECLAIM_ZONE|RECLAIM_WRITE|RECLAIM_UNMAP); -} - void check_move_unevictable_folios(struct folio_batch *fbatch); extern void __meminit kswapd_run(int nid); diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 9fad501311a1..184d39944e16 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -2061,15 +2061,6 @@ static struct ctl_table vm_table[] = { .proc_handler = dirtytime_interval_handler, .extra1 = SYSCTL_ZERO, }, - { - .procname = "swappiness", - .data = &vm_swappiness, - .maxlen = sizeof(vm_swappiness), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = SYSCTL_ZERO, - .extra2 = SYSCTL_TWO_HUNDRED, - }, { .procname = "drop_caches", .data = &sysctl_drop_caches, @@ -2117,16 +2108,6 @@ static struct ctl_table vm_table[] = { .extra1 = SYSCTL_ZERO, }, #endif -#ifdef CONFIG_NUMA - { - .procname = "zone_reclaim_mode", - .data = &node_reclaim_mode, - .maxlen = sizeof(node_reclaim_mode), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = SYSCTL_ZERO, - }, -#endif #ifdef CONFIG_MMU { .procname = "mmap_min_addr", diff --git a/mm/internal.h b/mm/internal.h index 906da6280c2d..84c46fe6a07c 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -1038,9 +1038,13 @@ static inline void mminit_verify_zonelist(void) #define NODE_RECLAIM_SUCCESS 1 #ifdef CONFIG_NUMA +extern int node_reclaim_mode; + extern int node_reclaim(struct pglist_data *, gfp_t, unsigned int); extern int find_next_best_node(int node, nodemask_t *used_node_mask); #else +#define node_reclaim_mode 0 + static inline int node_reclaim(struct pglist_data *pgdat, gfp_t mask, unsigned int order) { @@ -1052,6 +1056,12 @@ static inline int find_next_best_node(int node, nodemask_t *used_node_mask) } #endif +static inline bool node_reclaim_enabled(void) +{ + /* Is any node_reclaim_mode bit set? */ + return node_reclaim_mode & (RECLAIM_ZONE|RECLAIM_WRITE|RECLAIM_UNMAP); +} + /* * mm/memory-failure.c */ diff --git a/mm/vmscan.c b/mm/vmscan.c index f9919b522c01..1188978e46d5 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -7384,6 +7384,28 @@ void __meminit kswapd_stop(int nid) pgdat_kswapd_unlock(pgdat); } +static struct ctl_table vmscan_sysctl_table[] = { + { + .procname = "swappiness", + .data = &vm_swappiness, + .maxlen = sizeof(vm_swappiness), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = SYSCTL_ZERO, + .extra2 = SYSCTL_TWO_HUNDRED, + }, +#ifdef CONFIG_NUMA + { + .procname = "zone_reclaim_mode", + .data = &node_reclaim_mode, + .maxlen = sizeof(node_reclaim_mode), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = SYSCTL_ZERO, + } +#endif +}; + static int __init kswapd_init(void) { int nid; @@ -7391,6 +7413,7 @@ static int __init kswapd_init(void) swap_setup(); for_each_node_state(nid, N_MEMORY) kswapd_run(nid); + register_sysctl_init("vm", vmscan_sysctl_table); return 0; } From patchwork Thu Oct 10 15:22:05 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kaixiong Yu X-Patchwork-Id: 13830180 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) (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 B770C1CCECB; Thu, 10 Oct 2024 14:11:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.188 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728569512; cv=none; b=KcwPaI5FeIeKK1Fo+j/oyNxMBy4tY/2q4kQ4Ix3nChWMIx5SQmn2t+39/mchff91DV7fcAwQlJaAL/VsbpAVb3jLJ2ZQiLCpVlR6Ta2meOrZ8xKacpntfO48QJhJHpky5iY4NXdbxlElz18F9sQveiyyTLvNGbv358KYd0X+b7k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728569512; c=relaxed/simple; bh=qjQUM9Pu/xL1uv+5ViWjTEXFrOxn79eIJadQW9kS6+Q=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=sLa2DaTfBN6noUylcDLlZmFkOdjIZ+MkBojN/49wudXQR0LkpLZBlvfki7nmg7RkFGkadiHir3pb3W39/DqBOwrlZW3pUorEC3ol5PujpiqHXtqPXjPLddJqexVJXiB5OYw1NBVfevmPtcYejo3qjfa35Fn/CB08GUfq2Mf9n40= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.188 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.162.254]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4XPWpV3pGKzfdB3; Thu, 10 Oct 2024 22:09:22 +0800 (CST) Received: from kwepemh100016.china.huawei.com (unknown [7.202.181.102]) by mail.maildlp.com (Postfix) with ESMTPS id C5727180105; Thu, 10 Oct 2024 22:11:46 +0800 (CST) Received: from huawei.com (10.175.113.32) by kwepemh100016.china.huawei.com (7.202.181.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 10 Oct 2024 22:11:43 +0800 From: Kaixiong Yu To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v3 -next 05/15] mm: util: move sysctls to mm/util.c Date: Thu, 10 Oct 2024 23:22:05 +0800 Message-ID: <20241010152215.3025842-6-yukaixiong@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241010152215.3025842-1-yukaixiong@huawei.com> References: <20241010152215.3025842-1-yukaixiong@huawei.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemh100016.china.huawei.com (7.202.181.102) This moves all util related sysctls to mm/util.c, as part of the kernel/sysctl.c cleaning, also removes redundant external variable declarations and function declarations. Signed-off-by: Kaixiong Yu Reviewed-by: Kees Cook --- v3: - change the title --- include/linux/mm.h | 11 -------- include/linux/mman.h | 2 -- kernel/sysctl.c | 37 ------------------------ mm/util.c | 67 ++++++++++++++++++++++++++++++++++++++------ 4 files changed, 59 insertions(+), 58 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 7c46de4290da..50f0069280f4 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -204,17 +204,6 @@ extern int sysctl_max_map_count; extern unsigned long sysctl_user_reserve_kbytes; extern unsigned long sysctl_admin_reserve_kbytes; -extern int sysctl_overcommit_memory; -extern int sysctl_overcommit_ratio; -extern unsigned long sysctl_overcommit_kbytes; - -int overcommit_ratio_handler(const struct ctl_table *, int, void *, size_t *, - loff_t *); -int overcommit_kbytes_handler(const struct ctl_table *, int, void *, size_t *, - loff_t *); -int overcommit_policy_handler(const struct ctl_table *, int, void *, size_t *, - loff_t *); - #if defined(CONFIG_SPARSEMEM) && !defined(CONFIG_SPARSEMEM_VMEMMAP) #define nth_page(page,n) pfn_to_page(page_to_pfn((page)) + (n)) #define folio_page_idx(folio, p) (page_to_pfn(p) - folio_pfn(folio)) diff --git a/include/linux/mman.h b/include/linux/mman.h index bcb201ab7a41..e62ef272d140 100644 --- a/include/linux/mman.h +++ b/include/linux/mman.h @@ -58,8 +58,6 @@ | MAP_HUGE_1GB) extern int sysctl_overcommit_memory; -extern int sysctl_overcommit_ratio; -extern unsigned long sysctl_overcommit_kbytes; extern struct percpu_counter vm_committed_as; #ifdef CONFIG_SMP diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 184d39944e16..ad3ac6f6c808 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -2030,29 +2030,6 @@ static struct ctl_table kern_table[] = { }; static struct ctl_table vm_table[] = { - { - .procname = "overcommit_memory", - .data = &sysctl_overcommit_memory, - .maxlen = sizeof(sysctl_overcommit_memory), - .mode = 0644, - .proc_handler = overcommit_policy_handler, - .extra1 = SYSCTL_ZERO, - .extra2 = SYSCTL_TWO, - }, - { - .procname = "overcommit_ratio", - .data = &sysctl_overcommit_ratio, - .maxlen = sizeof(sysctl_overcommit_ratio), - .mode = 0644, - .proc_handler = overcommit_ratio_handler, - }, - { - .procname = "overcommit_kbytes", - .data = &sysctl_overcommit_kbytes, - .maxlen = sizeof(sysctl_overcommit_kbytes), - .mode = 0644, - .proc_handler = overcommit_kbytes_handler, - }, { .procname = "dirtytime_expire_seconds", .data = &dirtytime_expire_interval, @@ -2133,20 +2110,6 @@ static struct ctl_table vm_table[] = { .extra1 = SYSCTL_ZERO, }, #endif - { - .procname = "user_reserve_kbytes", - .data = &sysctl_user_reserve_kbytes, - .maxlen = sizeof(sysctl_user_reserve_kbytes), - .mode = 0644, - .proc_handler = proc_doulongvec_minmax, - }, - { - .procname = "admin_reserve_kbytes", - .data = &sysctl_admin_reserve_kbytes, - .maxlen = sizeof(sysctl_admin_reserve_kbytes), - .mode = 0644, - .proc_handler = proc_doulongvec_minmax, - }, #ifdef CONFIG_HAVE_ARCH_MMAP_RND_BITS { .procname = "mmap_rnd_bits", diff --git a/mm/util.c b/mm/util.c index c1c3b06ab4f9..d0c5f5110aa1 100644 --- a/mm/util.c +++ b/mm/util.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -894,14 +895,16 @@ int folio_mc_copy(struct folio *dst, struct folio *src) EXPORT_SYMBOL(folio_mc_copy); int sysctl_overcommit_memory __read_mostly = OVERCOMMIT_GUESS; -int sysctl_overcommit_ratio __read_mostly = 50; -unsigned long sysctl_overcommit_kbytes __read_mostly; +static int sysctl_overcommit_ratio __read_mostly = 50; +static unsigned long sysctl_overcommit_kbytes __read_mostly; int sysctl_max_map_count __read_mostly = DEFAULT_MAX_MAP_COUNT; unsigned long sysctl_user_reserve_kbytes __read_mostly = 1UL << 17; /* 128MB */ unsigned long sysctl_admin_reserve_kbytes __read_mostly = 1UL << 13; /* 8MB */ -int overcommit_ratio_handler(const struct ctl_table *table, int write, void *buffer, - size_t *lenp, loff_t *ppos) +#ifdef CONFIG_SYSCTL + +static int overcommit_ratio_handler(const struct ctl_table *table, int write, + void *buffer, size_t *lenp, loff_t *ppos) { int ret; @@ -916,8 +919,8 @@ static void sync_overcommit_as(struct work_struct *dummy) percpu_counter_sync(&vm_committed_as); } -int overcommit_policy_handler(const struct ctl_table *table, int write, void *buffer, - size_t *lenp, loff_t *ppos) +static int overcommit_policy_handler(const struct ctl_table *table, int write, + void *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table t; int new_policy = -1; @@ -952,8 +955,8 @@ int overcommit_policy_handler(const struct ctl_table *table, int write, void *bu return ret; } -int overcommit_kbytes_handler(const struct ctl_table *table, int write, void *buffer, - size_t *lenp, loff_t *ppos) +static int overcommit_kbytes_handler(const struct ctl_table *table, int write, + void *buffer, size_t *lenp, loff_t *ppos) { int ret; @@ -963,6 +966,54 @@ int overcommit_kbytes_handler(const struct ctl_table *table, int write, void *bu return ret; } +static struct ctl_table util_sysctl_table[] = { + { + .procname = "overcommit_memory", + .data = &sysctl_overcommit_memory, + .maxlen = sizeof(sysctl_overcommit_memory), + .mode = 0644, + .proc_handler = overcommit_policy_handler, + .extra1 = SYSCTL_ZERO, + .extra2 = SYSCTL_TWO, + }, + { + .procname = "overcommit_ratio", + .data = &sysctl_overcommit_ratio, + .maxlen = sizeof(sysctl_overcommit_ratio), + .mode = 0644, + .proc_handler = overcommit_ratio_handler, + }, + { + .procname = "overcommit_kbytes", + .data = &sysctl_overcommit_kbytes, + .maxlen = sizeof(sysctl_overcommit_kbytes), + .mode = 0644, + .proc_handler = overcommit_kbytes_handler, + }, + { + .procname = "user_reserve_kbytes", + .data = &sysctl_user_reserve_kbytes, + .maxlen = sizeof(sysctl_user_reserve_kbytes), + .mode = 0644, + .proc_handler = proc_doulongvec_minmax, + }, + { + .procname = "admin_reserve_kbytes", + .data = &sysctl_admin_reserve_kbytes, + .maxlen = sizeof(sysctl_admin_reserve_kbytes), + .mode = 0644, + .proc_handler = proc_doulongvec_minmax, + }, +}; + +static int __init init_vm_util_sysctls(void) +{ + register_sysctl_init("vm", util_sysctl_table); + return 0; +} +subsys_initcall(init_vm_util_sysctls); +#endif /* CONFIG_SYSCTL */ + /* * Committed memory limit enforced when OVERCOMMIT_NEVER policy is used */ From patchwork Thu Oct 10 15:22:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kaixiong Yu X-Patchwork-Id: 13830181 Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) (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 E1E9C1CDFD9; Thu, 10 Oct 2024 14:11:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.255 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728569517; cv=none; b=ETZTg2Sshk+S+CUP/MMvdEFLN3LsonZd8AMCYx0xkGrCdT/1GXPgHFHBFkfdkybWaeGMInTVlAVI8aC9xJj/U61L+P3ifif6ebTO+4vyRA8XdASvG/DwwAgZwJkx2iN192IyiP0HJ2i6Mop5asNHhrfJBi0G0jgyehhnZJG9Xfg= ARC-Message-Signature: i=1; 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Thu, 10 Oct 2024 22:11:50 +0800 (CST) Received: from huawei.com (10.175.113.32) by kwepemh100016.china.huawei.com (7.202.181.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 10 Oct 2024 22:11:46 +0800 From: Kaixiong Yu To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v3 -next 06/15] mm: mmap: move sysctl to mm/mmap.c Date: Thu, 10 Oct 2024 23:22:06 +0800 Message-ID: <20241010152215.3025842-7-yukaixiong@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241010152215.3025842-1-yukaixiong@huawei.com> References: <20241010152215.3025842-1-yukaixiong@huawei.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemh100016.china.huawei.com (7.202.181.102) This moves all mmap related sysctls to mm/mmap.c, as part of the kernel/sysctl.c cleaning, also move the variable declaration from kernel/sysctl.c into mm/mmap.c. Signed-off-by: Kaixiong Yu Reviewed-by: Kees Cook --- v3: - change the title v2: - fix sysctl_max_map_count undeclared issue in mm/nommu.c --- kernel/sysctl.c | 50 +-------------------------------------------- mm/mmap.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 55 insertions(+), 49 deletions(-) diff --git a/kernel/sysctl.c b/kernel/sysctl.c index ad3ac6f6c808..41d4afc978e6 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -127,12 +127,6 @@ enum sysctl_writes_mode { static enum sysctl_writes_mode sysctl_writes_strict = SYSCTL_WRITES_STRICT; #endif /* CONFIG_PROC_SYSCTL */ - -#if defined(HAVE_ARCH_PICK_MMAP_LAYOUT) || \ - defined(CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT) -int sysctl_legacy_va_layout; -#endif - #endif /* CONFIG_SYSCTL */ /* @@ -2047,16 +2041,7 @@ static struct ctl_table vm_table[] = { .extra1 = SYSCTL_ONE, .extra2 = SYSCTL_FOUR, }, -#ifdef CONFIG_MMU - { - .procname = "max_map_count", - .data = &sysctl_max_map_count, - .maxlen = sizeof(sysctl_max_map_count), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = SYSCTL_ZERO, - }, -#else +#ifndef CONFIG_MMU { .procname = "nr_trim_pages", .data = &sysctl_nr_trim_pages, @@ -2074,17 +2059,6 @@ static struct ctl_table vm_table[] = { .proc_handler = proc_dointvec_minmax, .extra1 = SYSCTL_ZERO, }, -#if defined(HAVE_ARCH_PICK_MMAP_LAYOUT) || \ - defined(CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT) - { - .procname = "legacy_va_layout", - .data = &sysctl_legacy_va_layout, - .maxlen = sizeof(sysctl_legacy_va_layout), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = SYSCTL_ZERO, - }, -#endif #ifdef CONFIG_MMU { .procname = "mmap_min_addr", @@ -2110,28 +2084,6 @@ static struct ctl_table vm_table[] = { .extra1 = SYSCTL_ZERO, }, #endif -#ifdef CONFIG_HAVE_ARCH_MMAP_RND_BITS - { - .procname = "mmap_rnd_bits", - .data = &mmap_rnd_bits, - .maxlen = sizeof(mmap_rnd_bits), - .mode = 0600, - .proc_handler = proc_dointvec_minmax, - .extra1 = (void *)&mmap_rnd_bits_min, - .extra2 = (void *)&mmap_rnd_bits_max, - }, -#endif -#ifdef CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS - { - .procname = "mmap_rnd_compat_bits", - .data = &mmap_rnd_compat_bits, - .maxlen = sizeof(mmap_rnd_compat_bits), - .mode = 0600, - .proc_handler = proc_dointvec_minmax, - .extra1 = (void *)&mmap_rnd_compat_bits_min, - .extra2 = (void *)&mmap_rnd_compat_bits_max, - }, -#endif }; int __init sysctl_init_bases(void) diff --git a/mm/mmap.c b/mm/mmap.c index 4ef58ad80a33..6d584e67d045 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -2176,6 +2176,57 @@ struct vm_area_struct *_install_special_mapping( &special_mapping_vmops); } +#ifdef CONFIG_SYSCTL +#if defined(HAVE_ARCH_PICK_MMAP_LAYOUT) || \ + defined(CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT) +int sysctl_legacy_va_layout; +#endif + +static struct ctl_table mmap_table[] = { + { + .procname = "max_map_count", + .data = &sysctl_max_map_count, + .maxlen = sizeof(sysctl_max_map_count), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = SYSCTL_ZERO, + }, +#if defined(HAVE_ARCH_PICK_MMAP_LAYOUT) || \ + defined(CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT) + { + .procname = "legacy_va_layout", + .data = &sysctl_legacy_va_layout, + .maxlen = sizeof(sysctl_legacy_va_layout), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = SYSCTL_ZERO, + }, +#endif +#ifdef CONFIG_HAVE_ARCH_MMAP_RND_BITS + { + .procname = "mmap_rnd_bits", + .data = &mmap_rnd_bits, + .maxlen = sizeof(mmap_rnd_bits), + .mode = 0600, + .proc_handler = proc_dointvec_minmax, + .extra1 = (void *)&mmap_rnd_bits_min, + .extra2 = (void *)&mmap_rnd_bits_max, + }, +#endif +#ifdef CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS + { + .procname = "mmap_rnd_compat_bits", + .data = &mmap_rnd_compat_bits, + .maxlen = sizeof(mmap_rnd_compat_bits), + .mode = 0600, + .proc_handler = proc_dointvec_minmax, + .extra1 = (void *)&mmap_rnd_compat_bits_min, + .extra2 = (void *)&mmap_rnd_compat_bits_max, + }, +#endif +}; +#endif /* CONFIG_SYSCTL */ + /* * initialise the percpu counter for VM */ @@ -2185,6 +2236,9 @@ void __init mmap_init(void) ret = percpu_counter_init(&vm_committed_as, 0, GFP_KERNEL); VM_BUG_ON(ret); +#ifdef CONFIG_SYSCTL + register_sysctl_init("vm", mmap_table); +#endif } /* From patchwork Thu Oct 10 15:22:07 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kaixiong Yu X-Patchwork-Id: 13830182 Received: from szxga06-in.huawei.com (szxga06-in.huawei.com [45.249.212.32]) (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 DB8A91CB518; Thu, 10 Oct 2024 14:11:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.32 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728569517; cv=none; b=TZulgkrIeRif4qvbBE+T68F769KmiKcf/8A9gIZ2hjQ01HOmV0vGW7THus1WhQcxRzOgs6WXTIskp5TRBeIv0bsdHlhscWZHjWuxKusB3PE37W+vbEYzaex85hujN6r4wiK7fXzqNxAAaM2Q2puaskVW2VG8PgfKAyiK1Btm7b4= ARC-Message-Signature: i=1; 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Thu, 10 Oct 2024 22:11:53 +0800 (CST) Received: from huawei.com (10.175.113.32) by kwepemh100016.china.huawei.com (7.202.181.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 10 Oct 2024 22:11:49 +0800 From: Kaixiong Yu To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v3 -next 07/15] security: min_addr: move sysctl to security/min_addr.c Date: Thu, 10 Oct 2024 23:22:07 +0800 Message-ID: <20241010152215.3025842-8-yukaixiong@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241010152215.3025842-1-yukaixiong@huawei.com> References: <20241010152215.3025842-1-yukaixiong@huawei.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemh100016.china.huawei.com (7.202.181.102) The dac_mmap_min_addr belongs to min_addr.c, move it to min_addr.c from /kernel/sysctl.c. In the previous Linux kernel boot process, sysctl_init_bases needs to be executed before init_mmap_min_addr, So, register_sysctl_init should be executed before update_mmap_min_addr in init_mmap_min_addr. And according to the compilation condition in security/Makefile: obj-$(CONFIG_MMU) += min_addr.o if CONFIG_MMU is not defined, min_addr.c would not be included in the compilation process. So, drop the CONFIG_MMU check. Signed-off-by: Kaixiong Yu Reviewed-by: Kees Cook Acked-by: Paul Moore --- v3: - change the title v2: - update the changelog to explain why drop CONFIG_MMU check. --- kernel/sysctl.c | 9 --------- security/min_addr.c | 11 +++++++++++ 2 files changed, 11 insertions(+), 9 deletions(-) diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 41d4afc978e6..0c0bab3dad7d 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -2059,15 +2059,6 @@ static struct ctl_table vm_table[] = { .proc_handler = proc_dointvec_minmax, .extra1 = SYSCTL_ZERO, }, -#ifdef CONFIG_MMU - { - .procname = "mmap_min_addr", - .data = &dac_mmap_min_addr, - .maxlen = sizeof(unsigned long), - .mode = 0644, - .proc_handler = mmap_min_addr_handler, - }, -#endif #if (defined(CONFIG_X86_32) && !defined(CONFIG_UML))|| \ (defined(CONFIG_SUPERH) && defined(CONFIG_VSYSCALL)) { diff --git a/security/min_addr.c b/security/min_addr.c index 0ce267c041ab..b2f61649e110 100644 --- a/security/min_addr.c +++ b/security/min_addr.c @@ -44,8 +44,19 @@ int mmap_min_addr_handler(const struct ctl_table *table, int write, return ret; } +static struct ctl_table min_addr_sysctl_table[] = { + { + .procname = "mmap_min_addr", + .data = &dac_mmap_min_addr, + .maxlen = sizeof(unsigned long), + .mode = 0644, + .proc_handler = mmap_min_addr_handler, + }, +}; + static int __init init_mmap_min_addr(void) { + register_sysctl_init("vm", min_addr_sysctl_table); update_mmap_min_addr(); return 0; From patchwork Thu Oct 10 15:22:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kaixiong Yu X-Patchwork-Id: 13830183 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) (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 BCE121CF2A6; Thu, 10 Oct 2024 14:11:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.188 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728569520; cv=none; b=G+tk/x8sN0LP3OlZNTZSX+OhEIYTbBuXsZLUYx6Bjp0JvGfKaS4MNL70iqq0lyQtp0EMoWeGNww90odvi/gJyROyQYfHUxq8EcPGKQrsjPujwIqotY7g30k3qXJt2gkqS5zJRwlaESjXc0S/7IXgFthCYAqcyD6oBkNtda1bPe8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728569520; c=relaxed/simple; bh=g732Esp/mIWetNdl4HDHlNnRSeKJ2ZsaaYF6CuxydeY=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=DNVwqbYy/jRBUCusIsqcMz6lTyMzJJk+K/F7Ljhxlu+vofS1j5+EOS61cFMU1xo20cyp2mN3dP6g/aM5RiyJ2RNwIWbqJMdPNxXuVqtVYHlzJMQ8SPniq/pfS4IigdAvMs1am1zN4zNeNYRRbBZJFbARDZx99hwQegj57PyVsfM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.188 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.163.174]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4XPWph1BJGzfdCv; Thu, 10 Oct 2024 22:09:32 +0800 (CST) Received: from kwepemh100016.china.huawei.com (unknown [7.202.181.102]) by mail.maildlp.com (Postfix) with ESMTPS id 6BB25140157; Thu, 10 Oct 2024 22:11:56 +0800 (CST) Received: from huawei.com (10.175.113.32) by kwepemh100016.china.huawei.com (7.202.181.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 10 Oct 2024 22:11:53 +0800 From: Kaixiong Yu To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v3 -next 08/15] mm: nommu: move sysctl to mm/nommu.c Date: Thu, 10 Oct 2024 23:22:08 +0800 Message-ID: <20241010152215.3025842-9-yukaixiong@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241010152215.3025842-1-yukaixiong@huawei.com> References: <20241010152215.3025842-1-yukaixiong@huawei.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemh100016.china.huawei.com (7.202.181.102) The sysctl_nr_trim_pages belongs to nommu.c, move it to mm/nommu.c from /kernel/sysctl.c. And remove the useless extern variable declaration from include/linux/mm.h Signed-off-by: Kaixiong Yu --- v3: - change the title v2: - fix the build error: expected ';' after top level declarator - fix the build error: call to undeclared function 'register_syscall_init', use 'register_sysctl_init' to replace it. --- include/linux/mm.h | 2 -- kernel/sysctl.c | 10 ---------- mm/nommu.c | 15 ++++++++++++++- 3 files changed, 14 insertions(+), 13 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 50f0069280f4..c7f73bf32024 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -4070,8 +4070,6 @@ unsigned long wp_shared_mapping_range(struct address_space *mapping, pgoff_t first_index, pgoff_t nr); #endif -extern int sysctl_nr_trim_pages; - #ifdef CONFIG_PRINTK void mem_dump_obj(void *object); #else diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 0c0bab3dad7d..d3de31ec74bf 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -2041,16 +2041,6 @@ static struct ctl_table vm_table[] = { .extra1 = SYSCTL_ONE, .extra2 = SYSCTL_FOUR, }, -#ifndef CONFIG_MMU - { - .procname = "nr_trim_pages", - .data = &sysctl_nr_trim_pages, - .maxlen = sizeof(sysctl_nr_trim_pages), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = SYSCTL_ZERO, - }, -#endif { .procname = "vfs_cache_pressure", .data = &sysctl_vfs_cache_pressure, diff --git a/mm/nommu.c b/mm/nommu.c index 385b0c15add8..48b2812f492a 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -48,7 +48,6 @@ struct page *mem_map; unsigned long max_mapnr; EXPORT_SYMBOL(max_mapnr); unsigned long highest_memmap_pfn; -int sysctl_nr_trim_pages = CONFIG_NOMMU_INITIAL_TRIM_EXCESS; int heap_stack_gap = 0; atomic_long_t mmap_pages_allocated; @@ -392,6 +391,19 @@ SYSCALL_DEFINE1(brk, unsigned long, brk) return mm->brk = brk; } +static int sysctl_nr_trim_pages = CONFIG_NOMMU_INITIAL_TRIM_EXCESS; + +static struct ctl_table nommu_table[] = { + { + .procname = "nr_trim_pages", + .data = &sysctl_nr_trim_pages, + .maxlen = sizeof(sysctl_nr_trim_pages), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = SYSCTL_ZERO, + }, +}; + /* * initialise the percpu counter for VM and region record slabs */ @@ -402,6 +414,7 @@ void __init mmap_init(void) ret = percpu_counter_init(&vm_committed_as, 0, GFP_KERNEL); VM_BUG_ON(ret); vm_region_jar = KMEM_CACHE(vm_region, SLAB_PANIC|SLAB_ACCOUNT); + register_sysctl_init("vm", nommu_table); } /* From patchwork Thu Oct 10 15:22:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kaixiong Yu X-Patchwork-Id: 13830184 Received: from szxga05-in.huawei.com (szxga05-in.huawei.com [45.249.212.191]) (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 270FA1D0400; 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dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.88.163]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4XPWmm4zJFz1HKkx; Thu, 10 Oct 2024 22:07:52 +0800 (CST) Received: from kwepemh100016.china.huawei.com (unknown [7.202.181.102]) by mail.maildlp.com (Postfix) with ESMTPS id 9D41D18001B; Thu, 10 Oct 2024 22:11:59 +0800 (CST) Received: from huawei.com (10.175.113.32) by kwepemh100016.china.huawei.com (7.202.181.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 10 Oct 2024 22:11:56 +0800 From: Kaixiong Yu To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v3 -next 09/15] fs: fs-writeback: move sysctl to fs/fs-writeback.c Date: Thu, 10 Oct 2024 23:22:09 +0800 Message-ID: <20241010152215.3025842-10-yukaixiong@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241010152215.3025842-1-yukaixiong@huawei.com> References: <20241010152215.3025842-1-yukaixiong@huawei.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemh100016.china.huawei.com (7.202.181.102) The dirtytime_expire_interval belongs to fs/fs-writeback.c, move it to fs/fs-writeback.c from /kernel/sysctl.c. And remove the useless extern variable declaration and the function declaration from include/linux/writeback.h Signed-off-by: Kaixiong Yu Reviewed-by: Kees Cook Reviewed-by: Jan Kara --- v3: - change dirtytime_expire_interval to static type - change the title --- fs/fs-writeback.c | 30 +++++++++++++++++++++--------- include/linux/writeback.h | 4 ---- kernel/sysctl.c | 8 -------- 3 files changed, 21 insertions(+), 21 deletions(-) diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index d8bec3c1bb1f..4fedefdb8e15 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -65,7 +65,7 @@ struct wb_writeback_work { * timestamps written to disk after 12 hours, but in the worst case a * few inodes might not their timestamps updated for 24 hours. */ -unsigned int dirtytime_expire_interval = 12 * 60 * 60; +static unsigned int dirtytime_expire_interval = 12 * 60 * 60; static inline struct inode *wb_inode(struct list_head *head) { @@ -2413,14 +2413,7 @@ static void wakeup_dirtytime_writeback(struct work_struct *w) schedule_delayed_work(&dirtytime_work, dirtytime_expire_interval * HZ); } -static int __init start_dirtytime_writeback(void) -{ - schedule_delayed_work(&dirtytime_work, dirtytime_expire_interval * HZ); - return 0; -} -__initcall(start_dirtytime_writeback); - -int dirtytime_interval_handler(const struct ctl_table *table, int write, +static int dirtytime_interval_handler(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { int ret; @@ -2431,6 +2424,25 @@ int dirtytime_interval_handler(const struct ctl_table *table, int write, return ret; } +static struct ctl_table vm_fs_writeback_table[] = { + { + .procname = "dirtytime_expire_seconds", + .data = &dirtytime_expire_interval, + .maxlen = sizeof(dirtytime_expire_interval), + .mode = 0644, + .proc_handler = dirtytime_interval_handler, + .extra1 = SYSCTL_ZERO, + }, +}; + +static int __init start_dirtytime_writeback(void) +{ + schedule_delayed_work(&dirtytime_work, dirtytime_expire_interval * HZ); + register_sysctl_init("vm", vm_fs_writeback_table); + return 0; +} +__initcall(start_dirtytime_writeback); + /** * __mark_inode_dirty - internal function to mark an inode dirty * diff --git a/include/linux/writeback.h b/include/linux/writeback.h index d6db822e4bb3..5f35b24aff7b 100644 --- a/include/linux/writeback.h +++ b/include/linux/writeback.h @@ -351,12 +351,8 @@ extern struct wb_domain global_wb_domain; /* These are exported to sysctl. */ extern unsigned int dirty_writeback_interval; extern unsigned int dirty_expire_interval; -extern unsigned int dirtytime_expire_interval; extern int laptop_mode; -int dirtytime_interval_handler(const struct ctl_table *table, int write, - void *buffer, size_t *lenp, loff_t *ppos); - void global_dirty_limits(unsigned long *pbackground, unsigned long *pdirty); unsigned long wb_calc_thresh(struct bdi_writeback *wb, unsigned long thresh); unsigned long cgwb_calc_thresh(struct bdi_writeback *wb); diff --git a/kernel/sysctl.c b/kernel/sysctl.c index d3de31ec74bf..373e018b950c 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -2024,14 +2024,6 @@ static struct ctl_table kern_table[] = { }; static struct ctl_table vm_table[] = { - { - .procname = "dirtytime_expire_seconds", - .data = &dirtytime_expire_interval, - .maxlen = sizeof(dirtytime_expire_interval), - .mode = 0644, - .proc_handler = dirtytime_interval_handler, - .extra1 = SYSCTL_ZERO, - }, { .procname = "drop_caches", .data = &sysctl_drop_caches, From patchwork Thu Oct 10 15:22:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kaixiong Yu X-Patchwork-Id: 13830185 Received: from szxga07-in.huawei.com (szxga07-in.huawei.com [45.249.212.35]) (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 BE8A11CBE84; Thu, 10 Oct 2024 14:12:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.35 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728569527; cv=none; b=IMOUm/wR4cSoyvNaUWptmNuvFWESbtUhP/NTVAUhgyUkfp65GSZR6l6YQLa0gDp8MQu6M14Yeo5yXuJQd3dkSKUaeBNOnmbWKTSqizd+96HT6OR+o8aPdRn0+zUdcHP/uxezEwYj3r4z4yezMcL8OV9vXbrYSsDs5Zh4YbGeiPA= ARC-Message-Signature: i=1; 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Thu, 10 Oct 2024 22:12:02 +0800 (CST) Received: from huawei.com (10.175.113.32) by kwepemh100016.china.huawei.com (7.202.181.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 10 Oct 2024 22:11:59 +0800 From: Kaixiong Yu To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v3 -next 10/15] fs: drop_caches: move sysctl to fs/drop_caches.c Date: Thu, 10 Oct 2024 23:22:10 +0800 Message-ID: <20241010152215.3025842-11-yukaixiong@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241010152215.3025842-1-yukaixiong@huawei.com> References: <20241010152215.3025842-1-yukaixiong@huawei.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemh100016.china.huawei.com (7.202.181.102) The sysctl_drop_caches to fs/drop_caches.c, move it to fs/drop_caches.c from /kernel/sysctl.c. And remove the useless extern variable declaration from include/linux/mm.h Signed-off-by: Kaixiong Yu Reviewed-by: Kees Cook Reviewed-by: Jan Kara Reviewed-by: Christian Brauner --- v3: - change the title --- fs/drop_caches.c | 23 +++++++++++++++++++++-- include/linux/mm.h | 6 ------ kernel/sysctl.c | 9 --------- 3 files changed, 21 insertions(+), 17 deletions(-) diff --git a/fs/drop_caches.c b/fs/drop_caches.c index d45ef541d848..f2551ace800f 100644 --- a/fs/drop_caches.c +++ b/fs/drop_caches.c @@ -14,7 +14,7 @@ #include "internal.h" /* A global variable is a bit ugly, but it keeps the code simple */ -int sysctl_drop_caches; +static int sysctl_drop_caches; static void drop_pagecache_sb(struct super_block *sb, void *unused) { @@ -48,7 +48,7 @@ static void drop_pagecache_sb(struct super_block *sb, void *unused) iput(toput_inode); } -int drop_caches_sysctl_handler(const struct ctl_table *table, int write, +static int drop_caches_sysctl_handler(const struct ctl_table *table, int write, void *buffer, size_t *length, loff_t *ppos) { int ret; @@ -77,3 +77,22 @@ int drop_caches_sysctl_handler(const struct ctl_table *table, int write, } return 0; } + +static struct ctl_table drop_caches_table[] = { + { + .procname = "drop_caches", + .data = &sysctl_drop_caches, + .maxlen = sizeof(int), + .mode = 0200, + .proc_handler = drop_caches_sysctl_handler, + .extra1 = SYSCTL_ONE, + .extra2 = SYSCTL_FOUR, + }, +}; + +static int __init init_vm_drop_caches_sysctls(void) +{ + register_sysctl_init("vm", drop_caches_table); + return 0; +} +fs_initcall(init_vm_drop_caches_sysctls); diff --git a/include/linux/mm.h b/include/linux/mm.h index c7f73bf32024..ed2e7425c838 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -3791,12 +3791,6 @@ static inline int in_gate_area(struct mm_struct *mm, unsigned long addr) extern bool process_shares_mm(struct task_struct *p, struct mm_struct *mm); -#ifdef CONFIG_SYSCTL -extern int sysctl_drop_caches; -int drop_caches_sysctl_handler(const struct ctl_table *, int, void *, size_t *, - loff_t *); -#endif - void drop_slab(void); #ifndef CONFIG_MMU diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 373e018b950c..d638a1bac9af 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -2024,15 +2024,6 @@ static struct ctl_table kern_table[] = { }; static struct ctl_table vm_table[] = { - { - .procname = "drop_caches", - .data = &sysctl_drop_caches, - .maxlen = sizeof(int), - .mode = 0200, - .proc_handler = drop_caches_sysctl_handler, - .extra1 = SYSCTL_ONE, - .extra2 = SYSCTL_FOUR, - }, { .procname = "vfs_cache_pressure", .data = &sysctl_vfs_cache_pressure, From patchwork Thu Oct 10 15:22:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kaixiong Yu X-Patchwork-Id: 13830186 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) (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 838BE1E1A1A; Thu, 10 Oct 2024 14:12:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.163.174]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4XPWps55PlzfcvP; Thu, 10 Oct 2024 22:09:41 +0800 (CST) Received: from kwepemh100016.china.huawei.com (unknown [7.202.181.102]) by mail.maildlp.com (Postfix) with ESMTPS id F30D8140157; Thu, 10 Oct 2024 22:12:05 +0800 (CST) Received: from huawei.com (10.175.113.32) by kwepemh100016.china.huawei.com (7.202.181.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 10 Oct 2024 22:12:02 +0800 From: Kaixiong Yu To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v3 -next 11/15] sunrpc: use vfs_pressure_ratio() helper Date: Thu, 10 Oct 2024 23:22:11 +0800 Message-ID: <20241010152215.3025842-12-yukaixiong@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241010152215.3025842-1-yukaixiong@huawei.com> References: <20241010152215.3025842-1-yukaixiong@huawei.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemh100016.china.huawei.com (7.202.181.102) Use vfs_pressure_ratio() to simplify code. Signed-off-by: Kaixiong Yu Reviewed-by: Kees Cook Acked-by: Anna Schumaker Acked-by: Jeff Layton --- net/sunrpc/auth.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c index 04534ea537c8..3d2b51d7e934 100644 --- a/net/sunrpc/auth.c +++ b/net/sunrpc/auth.c @@ -489,7 +489,7 @@ static unsigned long rpcauth_cache_shrink_count(struct shrinker *shrink, struct shrink_control *sc) { - return number_cred_unused * sysctl_vfs_cache_pressure / 100; + return vfs_pressure_ratio(number_cred_unused); } static void From patchwork Thu Oct 10 15:22:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Kaixiong Yu X-Patchwork-Id: 13830187 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) (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 0F2BF1E1A1A; Thu, 10 Oct 2024 14:12:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.188 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728569533; cv=none; b=Z+QOn/q6xhz+glV6GkZxk4K/mwADSg/5r50hUG2/5czDlyRq/tEAnJUJw5HRZEjNz6nZHQyNUuF9GxDGRHDz6H0PnnhAYWAhTiwPQqZuVOeQkJw9Ibjm6wUeIHkMZg3695PKP0YR4V0/ZYUzdMQ9LoAWsnphKsQM5q0P8O/rOLo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728569533; c=relaxed/simple; bh=SM1NMf/PE+Pu6vl6vagF/bkcuUOXNMdiKAkEIgYsFR4=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=NA4GeW+vBJ6pV2Q0tEj9Nqdb8SWC48c7HHaefNpzvoNHUJUyEQTXDjgu8chLOJv4TKR+7RY33vwru+ZPdP/ak5tuSvZHlO1e7LZCCt/Ai9CcYI//qTToLlni0VuCOPiLvMYMD3sWWmZ/6647XksSVLWXIMadhNPEKOzHCgbWWOc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.188 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.88.105]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4XPWqP4l4qzpWhQ; Thu, 10 Oct 2024 22:10:09 +0800 (CST) Received: from kwepemh100016.china.huawei.com (unknown [7.202.181.102]) by mail.maildlp.com (Postfix) with ESMTPS id 342941402CA; Thu, 10 Oct 2024 22:12:09 +0800 (CST) Received: from huawei.com (10.175.113.32) by kwepemh100016.china.huawei.com (7.202.181.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 10 Oct 2024 22:12:05 +0800 From: Kaixiong Yu To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v3 -next 12/15] fs: dcache: move the sysctl to fs/dcache.c Date: Thu, 10 Oct 2024 23:22:12 +0800 Message-ID: <20241010152215.3025842-13-yukaixiong@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241010152215.3025842-1-yukaixiong@huawei.com> References: <20241010152215.3025842-1-yukaixiong@huawei.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemh100016.china.huawei.com (7.202.181.102) The sysctl_vfs_cache_pressure belongs to fs/dcache.c, move it to fs/dcache.c from kernel/sysctl.c. As a part of fs/dcache.c cleaning, sysctl_vfs_cache_pressure is changed to a static variable, and change the inline-type function vfs_pressure_ratio() to out-of-inline type, export vfs_pressure_ratio() with EXPORT_SYMBOL_GPL to be used by other files. Move the unneeded include(linux/dcache.h). Signed-off-by: Kaixiong Yu Reviewed-by: Kees Cook Reviewed-by: Jan Kara Reviewed-by: Christian Brauner --- v3； - change the title v2: - update the changelog to call out changing the inline-type function vfs_pressure_ratio() to out-of-inline type --- fs/dcache.c | 21 +++++++++++++++++++-- include/linux/dcache.h | 7 +------ kernel/sysctl.c | 9 --------- 3 files changed, 20 insertions(+), 17 deletions(-) diff --git a/fs/dcache.c b/fs/dcache.c index b4d5e9e1e43d..de240b7f6c47 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -73,8 +73,13 @@ * If no ancestor relationship: * arbitrary, since it's serialized on rename_lock */ -int sysctl_vfs_cache_pressure __read_mostly = 100; -EXPORT_SYMBOL_GPL(sysctl_vfs_cache_pressure); +static int sysctl_vfs_cache_pressure __read_mostly = 100; + +unsigned long vfs_pressure_ratio(unsigned long val) +{ + return mult_frac(val, sysctl_vfs_cache_pressure, 100); +} +EXPORT_SYMBOL_GPL(vfs_pressure_ratio); __cacheline_aligned_in_smp DEFINE_SEQLOCK(rename_lock); @@ -211,8 +216,20 @@ static struct ctl_table fs_dcache_sysctls[] = { }, }; +static struct ctl_table vm_dcache_sysctls[] = { + { + .procname = "vfs_cache_pressure", + .data = &sysctl_vfs_cache_pressure, + .maxlen = sizeof(sysctl_vfs_cache_pressure), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = SYSCTL_ZERO, + }, +}; + static int __init init_fs_dcache_sysctls(void) { + register_sysctl_init("vm", vm_dcache_sysctls); register_sysctl_init("fs", fs_dcache_sysctls); return 0; } diff --git a/include/linux/dcache.h b/include/linux/dcache.h index bff956f7b2b9..c81c2e9e13df 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -508,12 +508,7 @@ static inline int simple_positive(const struct dentry *dentry) return d_really_is_positive(dentry) && !d_unhashed(dentry); } -extern int sysctl_vfs_cache_pressure; - -static inline unsigned long vfs_pressure_ratio(unsigned long val) -{ - return mult_frac(val, sysctl_vfs_cache_pressure, 100); -} +unsigned long vfs_pressure_ratio(unsigned long val); /** * d_inode - Get the actual inode of this dentry diff --git a/kernel/sysctl.c b/kernel/sysctl.c index d638a1bac9af..6f03fc749794 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -46,7 +46,6 @@ #include #include #include -#include #include #include #include @@ -2024,14 +2023,6 @@ static struct ctl_table kern_table[] = { }; static struct ctl_table vm_table[] = { - { - .procname = "vfs_cache_pressure", - .data = &sysctl_vfs_cache_pressure, - .maxlen = sizeof(sysctl_vfs_cache_pressure), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = SYSCTL_ZERO, - }, #if (defined(CONFIG_X86_32) && !defined(CONFIG_UML))|| \ (defined(CONFIG_SUPERH) && defined(CONFIG_VSYSCALL)) { From patchwork Thu Oct 10 15:22:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kaixiong Yu X-Patchwork-Id: 13830188 Received: from szxga05-in.huawei.com (szxga05-in.huawei.com [45.249.212.191]) (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 91EA71E47BF; Thu, 10 Oct 2024 14:12:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.191 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728569536; 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Thu, 10 Oct 2024 22:08:05 +0800 (CST) Received: from kwepemh100016.china.huawei.com (unknown [7.202.181.102]) by mail.maildlp.com (Postfix) with ESMTPS id 688EA18001B; Thu, 10 Oct 2024 22:12:12 +0800 (CST) Received: from huawei.com (10.175.113.32) by kwepemh100016.china.huawei.com (7.202.181.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 10 Oct 2024 22:12:09 +0800 From: Kaixiong Yu To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v3 -next 13/15] x86: vdso: move the sysctl to arch/x86/entry/vdso/vdso32-setup.c Date: Thu, 10 Oct 2024 23:22:13 +0800 Message-ID: <20241010152215.3025842-14-yukaixiong@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241010152215.3025842-1-yukaixiong@huawei.com> References: <20241010152215.3025842-1-yukaixiong@huawei.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemh100016.china.huawei.com (7.202.181.102) When CONFIG_X86_32 is defined and CONFIG_UML is not defined, vdso_enabled belongs to arch/x86/entry/vdso/vdso32-setup.c. So, move it into its own file. Before this patch, vdso_enabled was allowed to be set to a value exceeding 1 on x86_32 architecture. After this patch is applied, vdso_enabled is not permitted to set the value more than 1. It does not matter, because according to the function load_vdso32(), only vdso_enabled is set to 1, VDSO would be enabled. Other values all mean "disabled". The same limitation could be seen in the function vdso32_setup(). Signed-off-by: Kaixiong Yu Reviewed-by: Kees Cook --- arch/x86/entry/vdso/vdso32-setup.c | 16 +++++++++++----- kernel/sysctl.c | 8 +------- 2 files changed, 12 insertions(+), 12 deletions(-) diff --git a/arch/x86/entry/vdso/vdso32-setup.c b/arch/x86/entry/vdso/vdso32-setup.c index 76e4e74f35b5..5a6886a006ab 100644 --- a/arch/x86/entry/vdso/vdso32-setup.c +++ b/arch/x86/entry/vdso/vdso32-setup.c @@ -51,15 +51,17 @@ __setup("vdso32=", vdso32_setup); __setup_param("vdso=", vdso_setup, vdso32_setup, 0); #endif -#ifdef CONFIG_X86_64 #ifdef CONFIG_SYSCTL -/* Register vsyscall32 into the ABI table */ #include -static struct ctl_table abi_table2[] = { +static struct ctl_table vdso_table[] = { { +#ifdef CONFIG_X86_64 .procname = "vsyscall32", +#elif (defined(CONFIG_X86_32) && !defined(CONFIG_UML)) + .procname = "vdso_enabled", +#endif .data = &vdso32_enabled, .maxlen = sizeof(int), .mode = 0644, @@ -71,10 +73,14 @@ static struct ctl_table abi_table2[] = { static __init int ia32_binfmt_init(void) { - register_sysctl("abi", abi_table2); +#ifdef CONFIG_X86_64 + /* Register vsyscall32 into the ABI table */ + register_sysctl("abi", vdso_table); +#elif (defined(CONFIG_X86_32) && !defined(CONFIG_UML)) + register_sysctl_init("vm", vdso_table); +#endif return 0; } __initcall(ia32_binfmt_init); #endif /* CONFIG_SYSCTL */ -#endif /* CONFIG_X86_64 */ diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 6f03fc749794..24617be93119 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -2023,17 +2023,11 @@ static struct ctl_table kern_table[] = { }; static struct ctl_table vm_table[] = { -#if (defined(CONFIG_X86_32) && !defined(CONFIG_UML))|| \ - (defined(CONFIG_SUPERH) && defined(CONFIG_VSYSCALL)) +#if defined(CONFIG_SUPERH) && defined(CONFIG_VSYSCALL) { .procname = "vdso_enabled", -#ifdef CONFIG_X86_32 - .data = &vdso32_enabled, - .maxlen = sizeof(vdso32_enabled), -#else .data = &vdso_enabled, .maxlen = sizeof(vdso_enabled), -#endif .mode = 0644, .proc_handler = proc_dointvec, .extra1 = SYSCTL_ZERO, From patchwork Thu Oct 10 15:22:14 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kaixiong Yu X-Patchwork-Id: 13830189 Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) (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 3C0B21E5739; Thu, 10 Oct 2024 14:12:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.255 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728569539; cv=none; b=hAubYoGkOOBtJxXPoGvdNo5lnpZphhitKpNDPLa1FzUiT1qoIbB3HMFVb17OnzrcQ54IsgOmEb9DHRkv/643nqWrgt6jvkXXaLCDeQlJUq6t2nx8iSx3M+jNEyFE8iHTo7pmjgO37HypIhwSwFXSbVOf5bwuDEQc/34z2fFyFSQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728569539; c=relaxed/simple; bh=eROh2JCkHMw7fUfcULTP0cPlgLYUVQ+0Ybp9xn6yevM=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; 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Thu, 10 Oct 2024 22:12:12 +0800 From: Kaixiong Yu To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v3 -next 14/15] sh: vdso: move the sysctl to arch/sh/kernel/vsyscall/vsyscall.c Date: Thu, 10 Oct 2024 23:22:14 +0800 Message-ID: <20241010152215.3025842-15-yukaixiong@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241010152215.3025842-1-yukaixiong@huawei.com> References: <20241010152215.3025842-1-yukaixiong@huawei.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemh100016.china.huawei.com (7.202.181.102) When CONFIG_SUPERH and CONFIG_VSYSCALL are defined, vdso_enabled belongs to arch/sh/kernel/vsyscall/vsyscall.c. So, move it into its own file. After this patch is applied, all sysctls of vm_table would be moved. So, delete vm_table. Signed-off-by: Kaixiong Yu Reviewed-by: Kees Cook --- v3: - change the title --- arch/sh/kernel/vsyscall/vsyscall.c | 14 ++++++++++++++ kernel/sysctl.c | 14 -------------- 2 files changed, 14 insertions(+), 14 deletions(-) diff --git a/arch/sh/kernel/vsyscall/vsyscall.c b/arch/sh/kernel/vsyscall/vsyscall.c index add35c51e017..43bc3715e38c 100644 --- a/arch/sh/kernel/vsyscall/vsyscall.c +++ b/arch/sh/kernel/vsyscall/vsyscall.c @@ -14,6 +14,7 @@ #include #include #include +#include #include /* @@ -30,6 +31,17 @@ static int __init vdso_setup(char *s) } __setup("vdso=", vdso_setup); +static struct ctl_table vdso_table[] = { + { + .procname = "vdso_enabled", + .data = &vdso_enabled, + .maxlen = sizeof(vdso_enabled), + .mode = 0644, + .proc_handler = proc_dointvec, + .extra1 = SYSCTL_ZERO, + }, +}; + /* * These symbols are defined by vsyscall.o to mark the bounds * of the ELF DSO images included therein. @@ -55,6 +67,8 @@ int __init vsyscall_init(void) &vsyscall_trapa_start, &vsyscall_trapa_end - &vsyscall_trapa_start); + register_sysctl_init("vm", vdso_table); + return 0; } diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 24617be93119..f04da9f3abc6 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -2022,23 +2022,9 @@ static struct ctl_table kern_table[] = { #endif }; -static struct ctl_table vm_table[] = { -#if defined(CONFIG_SUPERH) && defined(CONFIG_VSYSCALL) - { - .procname = "vdso_enabled", - .data = &vdso_enabled, - .maxlen = sizeof(vdso_enabled), - .mode = 0644, - .proc_handler = proc_dointvec, - .extra1 = SYSCTL_ZERO, - }, -#endif -}; - int __init sysctl_init_bases(void) { register_sysctl_init("kernel", kern_table); - register_sysctl_init("vm", vm_table); return 0; } From patchwork Thu Oct 10 15:22:15 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kaixiong Yu X-Patchwork-Id: 13830190 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) (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 0E7D71E7C21; Thu, 10 Oct 2024 14:12:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.188 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728569542; cv=none; b=RVnGeU0BaxojRjuvmkiV/un8SWgAMpr03T1aBjgFsi9XsATXCTvxDBHucKhqpXWy/Nk9eDuaLfi/6bNsgI8AE3qvYuAbeclHkAE4Bqq6fiGOOCaeXNxfkIN0bIbyIGom/PHexPCx4PmJyORez61nvHdDORf9w+kuXiBJRO5trUE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728569542; c=relaxed/simple; bh=3Bjfe7NAtCXidb5TFTCiuIh/dnHj0G/gKNNhaIgHxTY=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=C0Mo0gu6kmEC2G+kPmnWPcXnDmTwem8BZp8M2lh4Hfxw5I6DUlg2+yB7o5aZPgbd7DPS+hQjbpEUy9by+P+dklEVE2ABPz9mmHVPO9ubdHpcUl3VBNXdJ/+WriQ8DvMsGaqjL+kzW+34YTZ32ajcAtSKt+PJqskSISQennokphI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.188 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.163.48]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4XPWq6495SzfdDh; Thu, 10 Oct 2024 22:09:54 +0800 (CST) Received: from kwepemh100016.china.huawei.com (unknown [7.202.181.102]) by mail.maildlp.com (Postfix) with ESMTPS id CE3A218007C; Thu, 10 Oct 2024 22:12:18 +0800 (CST) Received: from huawei.com (10.175.113.32) by kwepemh100016.china.huawei.com (7.202.181.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 10 Oct 2024 22:12:15 +0800 From: Kaixiong Yu To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v3 -next 15/15] sysctl: remove unneeded include Date: Thu, 10 Oct 2024 23:22:15 +0800 Message-ID: <20241010152215.3025842-16-yukaixiong@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241010152215.3025842-1-yukaixiong@huawei.com> References: <20241010152215.3025842-1-yukaixiong@huawei.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemh100016.china.huawei.com (7.202.181.102) Removing unneeded mm includes in kernel/sysctl.c. Signed-off-by: Kaixiong Yu Reviewed-by: Kees Cook --- kernel/sysctl.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/kernel/sysctl.c b/kernel/sysctl.c index f04da9f3abc6..6e3e0ce4da79 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -20,8 +20,6 @@ */ #include -#include -#include #include #include #include @@ -30,7 +28,6 @@ #include #include #include -#include #include #include #include @@ -41,7 +38,6 @@ #include #include #include -#include #include #include #include @@ -52,13 +48,11 @@ #include #include #include -#include #include #include #include #include #include -#include #include #include "../lib/kstrtox.h"