From patchwork Tue Apr 16 18:27:34 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Howells X-Patchwork-Id: 2450621 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Original-To: patchwork-linux-pci@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id 1B7F43FD8C for ; Tue, 16 Apr 2013 18:28:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965303Ab3DPS1v (ORCPT ); Tue, 16 Apr 2013 14:27:51 -0400 Received: from mx1.redhat.com ([209.132.183.28]:47367 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965003Ab3DPS1t (ORCPT ); Tue, 16 Apr 2013 14:27:49 -0400 Received: from int-mx12.intmail.prod.int.phx2.redhat.com (int-mx12.intmail.prod.int.phx2.redhat.com [10.5.11.25]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r3GIRbP4008147 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Tue, 16 Apr 2013 14:27:37 -0400 Received: from warthog.procyon.org.uk (ovpn-113-46.phx2.redhat.com [10.3.113.46]) by int-mx12.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id r3GIRYMY028048; Tue, 16 Apr 2013 14:27:35 -0400 Organization: Red Hat UK Ltd. 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Registered in England and Wales under Company Registration No. 3798903 Subject: [PATCH 26/28] proc: Supply a function to remove a proc entry by PDE [RFC] To: linux-kernel@vger.kernel.org From: David Howells Cc: alsa-devel@alsa-project.org, linux-pci@vger.kernel.org, devicetree-discuss@lists.ozlabs.org, linux-acpi@vger.kernel.org, netfilter-devel@vger.kernel.org, viro@zeniv.linux.org.uk, netdev@vger.kernel.org, linux-fsdevel@vger.kernel.org, openipmi-developer@lists.sourceforge.net Date: Tue, 16 Apr 2013 19:27:34 +0100 Message-ID: <20130416182734.27773.47452.stgit@warthog.procyon.org.uk> In-Reply-To: <20130416182550.27773.89310.stgit@warthog.procyon.org.uk> References: <20130416182550.27773.89310.stgit@warthog.procyon.org.uk> User-Agent: StGit/0.16 MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.68 on 10.5.11.25 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Supply a function (proc_remove()) to remove a proc entry (and any subtree rooted there) by proc_dir_entry pointer rather than by name and (optionally) root dir entry pointer. This allows us to eliminate all remaining pde->name accesses outside of procfs. Signed-off-by: David Howells cc: linux-acpi@vger.kernel.org cc: openipmi-developer@lists.sourceforge.net cc: devicetree-discuss@lists.ozlabs.org cc: linux-pci@vger.kernel.org cc: netdev@vger.kernel.org cc: netfilter-devel@vger.kernel.org cc: alsa-devel@alsa-project.org Acked-by: Grant Likely Acked-by: Bjorn Helgaas Acked-by: Rafael J. Wysocki --- drivers/acpi/sbs.c | 21 ++++----------------- drivers/char/ipmi/ipmi_msghandler.c | 2 +- drivers/misc/sgi-gru/gruprocfs.c | 2 +- drivers/of/base.c | 11 +---------- drivers/pci/proc.c | 12 +++--------- fs/proc/generic.c | 7 +++++++ fs/proc/vmcore.c | 2 +- include/linux/proc_fs.h | 2 ++ kernel/irq/proc.c | 6 +----- net/8021q/vlanproc.c | 9 ++------- net/core/pktgen.c | 6 ++---- net/ipv4/netfilter/ipt_CLUSTERIP.c | 4 ++-- net/ipv6/proc.c | 3 +-- net/netfilter/xt_hashlimit.c | 4 ++-- sound/core/info.c | 19 +++++-------------- 15 files changed, 35 insertions(+), 75 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c index a296e08..b6241ee 100644 --- a/drivers/acpi/sbs.c +++ b/drivers/acpi/sbs.c @@ -521,19 +521,6 @@ acpi_sbs_add_fs(struct proc_dir_entry **dir, return 0; } -static void -acpi_sbs_remove_fs(struct proc_dir_entry **dir, - struct proc_dir_entry *parent_dir) -{ - if (*dir) { - remove_proc_entry(ACPI_SBS_FILE_INFO, *dir); - remove_proc_entry(ACPI_SBS_FILE_STATE, *dir); - remove_proc_entry(ACPI_SBS_FILE_ALARM, *dir); - remove_proc_entry((*dir)->name, parent_dir); - *dir = NULL; - } -} - /* Smart Battery Interface */ static struct proc_dir_entry *acpi_battery_dir = NULL; @@ -836,8 +823,8 @@ static void acpi_battery_remove(struct acpi_sbs *sbs, int id) power_supply_unregister(&battery->bat); } #ifdef CONFIG_ACPI_PROCFS_POWER - if (battery->proc_entry) - acpi_sbs_remove_fs(&battery->proc_entry, acpi_battery_dir); + proc_remove(battery->proc_entry); + battery->proc_entry = NULL; #endif } @@ -873,8 +860,8 @@ static void acpi_charger_remove(struct acpi_sbs *sbs) if (sbs->charger.dev) power_supply_unregister(&sbs->charger); #ifdef CONFIG_ACPI_PROCFS_POWER - if (sbs->charger_entry) - acpi_sbs_remove_fs(&sbs->charger_entry, acpi_ac_dir); + proc_remove(sbs->charger_entry); + sbs->charger_entry = NULL; #endif } diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c index 1420bbb..4d439d2 100644 --- a/drivers/char/ipmi/ipmi_msghandler.c +++ b/drivers/char/ipmi/ipmi_msghandler.c @@ -4541,7 +4541,7 @@ static void __exit cleanup_ipmi(void) del_timer_sync(&ipmi_timer); #ifdef CONFIG_PROC_FS - remove_proc_entry(proc_ipmi_root->name, NULL); + proc_remove(proc_ipmi_root); #endif /* CONFIG_PROC_FS */ driver_unregister(&ipmidriver.driver); diff --git a/drivers/misc/sgi-gru/gruprocfs.c b/drivers/misc/sgi-gru/gruprocfs.c index 950dbe9..797d796 100644 --- a/drivers/misc/sgi-gru/gruprocfs.c +++ b/drivers/misc/sgi-gru/gruprocfs.c @@ -355,7 +355,7 @@ static void delete_proc_files(void) for (p = proc_files; p->name; p++) if (p->entry) remove_proc_entry(p->name, proc_gru); - remove_proc_entry("gru", proc_gru->parent); + proc_remove(proc_gru); } } diff --git a/drivers/of/base.c b/drivers/of/base.c index 321d3ef..9c70436 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -1452,16 +1452,7 @@ int of_attach_node(struct device_node *np) #ifdef CONFIG_PROC_DEVICETREE static void of_remove_proc_dt_entry(struct device_node *dn) { - struct device_node *parent = dn->parent; - struct property *prop = dn->properties; - - while (prop) { - remove_proc_entry(prop->name, dn->pde); - prop = prop->next; - } - - if (dn->pde) - remove_proc_entry(dn->pde->name, parent->pde); + proc_remove(dn->pde); } #else static void of_remove_proc_dt_entry(struct device_node *dn) diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c index 7cde7c1..0812608 100644 --- a/drivers/pci/proc.c +++ b/drivers/pci/proc.c @@ -427,20 +427,14 @@ int pci_proc_attach_device(struct pci_dev *dev) int pci_proc_detach_device(struct pci_dev *dev) { - struct proc_dir_entry *e; - - if ((e = dev->procent)) { - remove_proc_entry(e->name, dev->bus->procdir); - dev->procent = NULL; - } + proc_remove(dev->procent); + dev->procent = NULL; return 0; } int pci_proc_detach_bus(struct pci_bus* bus) { - struct proc_dir_entry *de = bus->procdir; - if (de) - remove_proc_entry(de->name, proc_bus_pci_dir); + proc_remove(bus->procdir); return 0; } diff --git a/fs/proc/generic.c b/fs/proc/generic.c index 2c6d6be..4b48033 100644 --- a/fs/proc/generic.c +++ b/fs/proc/generic.c @@ -630,3 +630,10 @@ const char *get_proc_name(const struct proc_dir_entry *de) return de->name; } EXPORT_SYMBOL_GPL(get_proc_name); + +void proc_remove(struct proc_dir_entry *de) +{ + if (de) + remove_proc_subtree(de->name, de->parent); +} +EXPORT_SYMBOL(proc_remove); diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c index 38edddc..17f7e08 100644 --- a/fs/proc/vmcore.c +++ b/fs/proc/vmcore.c @@ -699,7 +699,7 @@ void vmcore_cleanup(void) struct list_head *pos, *next; if (proc_vmcore) { - remove_proc_entry(proc_vmcore->name, proc_vmcore->parent); + proc_remove(proc_vmcore); proc_vmcore = NULL; } diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h index 7abc72a..b8949b1 100644 --- a/include/linux/proc_fs.h +++ b/include/linux/proc_fs.h @@ -67,6 +67,7 @@ struct proc_dir_entry *proc_create_data(const char *name, umode_t mode, struct proc_dir_entry *parent, const struct file_operations *proc_fops, void *data); +extern void proc_remove(struct proc_dir_entry *); extern void remove_proc_entry(const char *name, struct proc_dir_entry *parent); extern int remove_proc_subtree(const char *name, struct proc_dir_entry *parent); @@ -103,6 +104,7 @@ static inline struct proc_dir_entry *proc_create_data(const char *name, { return NULL; } +static inline void proc_remove(struct proc_dir_entry *de) {} #define remove_proc_entry(name, parent) do {} while (0) #define remove_proc_subtree(name, parent) do {} while (0) diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c index d59ae37..19ed5c4 100644 --- a/kernel/irq/proc.c +++ b/kernel/irq/proc.c @@ -366,11 +366,7 @@ void unregister_irq_proc(unsigned int irq, struct irq_desc *desc) void unregister_handler_proc(unsigned int irq, struct irqaction *action) { - if (action->dir) { - struct irq_desc *desc = irq_to_desc(irq); - - remove_proc_entry(action->dir->name, desc->dir); - } + proc_remove(action->dir); } static void register_default_affinity_proc(void) diff --git a/net/8021q/vlanproc.c b/net/8021q/vlanproc.c index 959ddbb..1d0e8921 100644 --- a/net/8021q/vlanproc.c +++ b/net/8021q/vlanproc.c @@ -184,14 +184,9 @@ int vlan_proc_add_dev(struct net_device *vlandev) */ int vlan_proc_rem_dev(struct net_device *vlandev) { - struct vlan_net *vn = net_generic(dev_net(vlandev), vlan_net_id); - /** NOTE: This will consume the memory pointed to by dent, it seems. */ - if (vlan_dev_priv(vlandev)->dent) { - remove_proc_entry(vlan_dev_priv(vlandev)->dent->name, - vn->proc_vlan_dir); - vlan_dev_priv(vlandev)->dent = NULL; - } + proc_remove(vlan_dev_priv(vlandev)->dent); + vlan_dev_priv(vlandev)->dent = NULL; return 0; } diff --git a/net/core/pktgen.c b/net/core/pktgen.c index f6af4fe..6c41e97 100644 --- a/net/core/pktgen.c +++ b/net/core/pktgen.c @@ -1904,7 +1904,7 @@ static void pktgen_change_name(const struct pktgen_net *pn, struct net_device *d if (pkt_dev->odev != dev) continue; - remove_proc_entry(pkt_dev->entry->name, pn->proc_dir); + proc_remove(pkt_dev->entry); pkt_dev->entry = proc_create_data(dev->name, 0600, pn->proc_dir, @@ -3576,8 +3576,6 @@ static void _rem_dev_from_if_list(struct pktgen_thread *t, static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *pkt_dev) { - struct pktgen_net *pn = t->net; - pr_debug("remove_device pkt_dev=%p\n", pkt_dev); if (pkt_dev->running) { @@ -3597,7 +3595,7 @@ static int pktgen_remove_device(struct pktgen_thread *t, _rem_dev_from_if_list(t, pkt_dev); if (pkt_dev->entry) - remove_proc_entry(pkt_dev->entry->name, pn->proc_dir); + proc_remove(pkt_dev->entry); #ifdef CONFIG_XFRM free_SAs(pkt_dev); diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c index e4738fe..0b732ef 100644 --- a/net/ipv4/netfilter/ipt_CLUSTERIP.c +++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c @@ -105,7 +105,7 @@ clusterip_config_entry_put(struct clusterip_config *c) * functions are also incrementing the refcount on their own, * so it's safe to remove the entry even if it's in use. */ #ifdef CONFIG_PROC_FS - remove_proc_entry(c->pde->name, c->pde->parent); + proc_remove(c->pde); #endif return; } @@ -736,7 +736,7 @@ static void __exit clusterip_tg_exit(void) { pr_info("ClusterIP Version %s unloading\n", CLUSTERIP_VERSION); #ifdef CONFIG_PROC_FS - remove_proc_entry(clusterip_procdir->name, clusterip_procdir->parent); + proc_remove(clusterip_procdir); #endif nf_unregister_hook(&cip_arp_ops); xt_unregister_target(&clusterip_tg_reg); diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c index 7ea6e18..537d9ee 100644 --- a/net/ipv6/proc.c +++ b/net/ipv6/proc.c @@ -287,8 +287,7 @@ int snmp6_unregister_dev(struct inet6_dev *idev) return -ENOENT; if (!idev->stats.proc_dir_entry) return -EINVAL; - remove_proc_entry(idev->stats.proc_dir_entry->name, - net->mib.proc_net_devsnmp6); + proc_remove(idev->stats.proc_dir_entry); idev->stats.proc_dir_entry = NULL; return 0; } diff --git a/net/netfilter/xt_hashlimit.c b/net/netfilter/xt_hashlimit.c index d2fd53b..40002ef 100644 --- a/net/netfilter/xt_hashlimit.c +++ b/net/netfilter/xt_hashlimit.c @@ -330,7 +330,7 @@ static void htable_destroy(struct xt_hashlimit_htable *hinfo) parent = hashlimit_net->ip6t_hashlimit; if(parent != NULL) - remove_proc_entry(hinfo->pde->name, parent); + proc_remove(hinfo->pde); htable_selective_cleanup(hinfo, select_all); vfree(hinfo); @@ -887,7 +887,7 @@ static void __net_exit hashlimit_proc_net_exit(struct net *net) pde = hashlimit_net->ip6t_hashlimit; hlist_for_each_entry(hinfo, &hashlimit_net->htables, node) - remove_proc_entry(hinfo->pde->name, pde); + proc_remove(hinfo->pde); hashlimit_net->ipt_hashlimit = NULL; hashlimit_net->ip6t_hashlimit = NULL; diff --git a/sound/core/info.c b/sound/core/info.c index c7f41c3..3c9bd6b 100644 --- a/sound/core/info.c +++ b/sound/core/info.c @@ -153,13 +153,6 @@ EXPORT_SYMBOL(snd_seq_root); struct snd_info_entry *snd_oss_root; #endif -static void snd_remove_proc_entry(struct proc_dir_entry *parent, - struct proc_dir_entry *de) -{ - if (de) - remove_proc_entry(de->name, parent); -} - static loff_t snd_info_entry_llseek(struct file *file, loff_t offset, int orig) { struct snd_info_private_data *data; @@ -580,7 +573,7 @@ int __exit snd_info_done(void) #ifdef CONFIG_SND_OSSEMUL snd_info_free_entry(snd_oss_root); #endif - snd_remove_proc_entry(NULL, snd_proc_root); + proc_remove(snd_proc_root); } return 0; } @@ -642,7 +635,7 @@ void snd_info_card_id_change(struct snd_card *card) { mutex_lock(&info_mutex); if (card->proc_root_link) { - snd_remove_proc_entry(snd_proc_root, card->proc_root_link); + proc_remove(card->proc_root_link); card->proc_root_link = NULL; } if (strcmp(card->id, card->proc_root->name)) @@ -661,10 +654,8 @@ void snd_info_card_disconnect(struct snd_card *card) if (!card) return; mutex_lock(&info_mutex); - if (card->proc_root_link) { - snd_remove_proc_entry(snd_proc_root, card->proc_root_link); - card->proc_root_link = NULL; - } + proc_remove(card->proc_root_link); + card->proc_root_link = NULL; if (card->proc_root) snd_info_disconnect(card->proc_root); mutex_unlock(&info_mutex); @@ -856,7 +847,7 @@ static void snd_info_disconnect(struct snd_info_entry *entry) list_del_init(&entry->list); root = entry->parent == NULL ? snd_proc_root : entry->parent->p; snd_BUG_ON(!root); - snd_remove_proc_entry(root, entry->p); + proc_remove(entry->p); entry->p = NULL; }