| Message ID | 20180419124140.9309-17-hch@lst.de |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | [01/39] net/can: single_open_net needs to be paired with single_release_net | expand |
On 04/19/2018 07:41 AM, Christoph Hellwig wrote: > Use remove_proc_subtree to remove the whole subtree on cleanup instead > of a hand rolled list of proc entries, unwind the registration loop into > individual calls. Switch to use proc_create_single to further simplify > the code. I'm yanking all the proc code out of the IPMI driver in 3.18. So this is probably not necessary. Thanks, -corey > Signed-off-by: Christoph Hellwig <hch@lst.de> > --- > drivers/char/ipmi/ipmi_msghandler.c | 150 +++++----------------------- > drivers/char/ipmi/ipmi_si_intf.c | 47 +-------- > drivers/char/ipmi/ipmi_ssif.c | 34 +------ > include/linux/ipmi_smi.h | 8 +- > 4 files changed, 33 insertions(+), 206 deletions(-) > > diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c > index 361148938801..c18db313e4c4 100644 > --- a/drivers/char/ipmi/ipmi_msghandler.c > +++ b/drivers/char/ipmi/ipmi_msghandler.c > @@ -247,13 +247,6 @@ struct ipmi_my_addrinfo { > unsigned char lun; > }; > > -#ifdef CONFIG_IPMI_PROC_INTERFACE > -struct ipmi_proc_entry { > - char *name; > - struct ipmi_proc_entry *next; > -}; > -#endif > - > /* > * Note that the product id, manufacturer id, guid, and device id are > * immutable in this structure, so dyn_mutex is not required for > @@ -430,10 +423,6 @@ struct ipmi_smi { > void *send_info; > > #ifdef CONFIG_IPMI_PROC_INTERFACE > - /* A list of proc entries for this interface. */ > - struct mutex proc_entry_lock; > - struct ipmi_proc_entry *proc_entries; > - > struct proc_dir_entry *proc_dir; > char proc_dir_name[10]; > #endif > @@ -2358,18 +2347,6 @@ static int smi_ipmb_proc_show(struct seq_file *m, void *v) > return 0; > } > > -static int smi_ipmb_proc_open(struct inode *inode, struct file *file) > -{ > - return single_open(file, smi_ipmb_proc_show, PDE_DATA(inode)); > -} > - > -static const struct file_operations smi_ipmb_proc_ops = { > - .open = smi_ipmb_proc_open, > - .read = seq_read, > - .llseek = seq_lseek, > - .release = single_release, > -}; > - > static int smi_version_proc_show(struct seq_file *m, void *v) > { > ipmi_smi_t intf = m->private; > @@ -2387,18 +2364,6 @@ static int smi_version_proc_show(struct seq_file *m, void *v) > return 0; > } > > -static int smi_version_proc_open(struct inode *inode, struct file *file) > -{ > - return single_open(file, smi_version_proc_show, PDE_DATA(inode)); > -} > - > -static const struct file_operations smi_version_proc_ops = { > - .open = smi_version_proc_open, > - .read = seq_read, > - .llseek = seq_lseek, > - .release = single_release, > -}; > - > static int smi_stats_proc_show(struct seq_file *m, void *v) > { > ipmi_smi_t intf = m->private; > @@ -2462,95 +2427,45 @@ static int smi_stats_proc_show(struct seq_file *m, void *v) > return 0; > } > > -static int smi_stats_proc_open(struct inode *inode, struct file *file) > -{ > - return single_open(file, smi_stats_proc_show, PDE_DATA(inode)); > -} > - > -static const struct file_operations smi_stats_proc_ops = { > - .open = smi_stats_proc_open, > - .read = seq_read, > - .llseek = seq_lseek, > - .release = single_release, > -}; > - > int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name, > - const struct file_operations *proc_ops, > - void *data) > + int (*show)(struct seq_file *, void *), void *data) > { > - int rv = 0; > - struct proc_dir_entry *file; > - struct ipmi_proc_entry *entry; > - > - /* Create a list element. */ > - entry = kmalloc(sizeof(*entry), GFP_KERNEL); > - if (!entry) > + if (!proc_create_single_data(name, 0, smi->proc_dir, show, data)) > return -ENOMEM; > - entry->name = kstrdup(name, GFP_KERNEL); > - if (!entry->name) { > - kfree(entry); > - return -ENOMEM; > - } > - > - file = proc_create_data(name, 0, smi->proc_dir, proc_ops, data); > - if (!file) { > - kfree(entry->name); > - kfree(entry); > - rv = -ENOMEM; > - } else { > - mutex_lock(&smi->proc_entry_lock); > - /* Stick it on the list. */ > - entry->next = smi->proc_entries; > - smi->proc_entries = entry; > - mutex_unlock(&smi->proc_entry_lock); > - } > - > - return rv; > + return 0; > } > EXPORT_SYMBOL(ipmi_smi_add_proc_entry); > > static int add_proc_entries(ipmi_smi_t smi, int num) > { > - int rv = 0; > - > sprintf(smi->proc_dir_name, "%d", num); > smi->proc_dir = proc_mkdir(smi->proc_dir_name, proc_ipmi_root); > if (!smi->proc_dir) > - rv = -ENOMEM; > - > - if (rv == 0) > - rv = ipmi_smi_add_proc_entry(smi, "stats", > - &smi_stats_proc_ops, > - smi); > - > - if (rv == 0) > - rv = ipmi_smi_add_proc_entry(smi, "ipmb", > - &smi_ipmb_proc_ops, > - smi); > - > - if (rv == 0) > - rv = ipmi_smi_add_proc_entry(smi, "version", > - &smi_version_proc_ops, > - smi); > - > - return rv; > + return -ENOMEM; > + if (!proc_create_single_data("stats", 0, smi->proc_dir, > + smi_stats_proc_show, smi)) > + return -ENOMEM; > + if (!proc_create_single_data("ipmb", 0, smi->proc_dir, > + smi_ipmb_proc_show, smi)) > + return -ENOMEM; > + if (!proc_create_single_data("version", 0, smi->proc_dir, > + smi_version_proc_show, smi)) > + return -ENOMEM; > + return 0; > } > > static void remove_proc_entries(ipmi_smi_t smi) > { > - struct ipmi_proc_entry *entry; > - > - mutex_lock(&smi->proc_entry_lock); > - while (smi->proc_entries) { > - entry = smi->proc_entries; > - smi->proc_entries = entry->next; > - > - remove_proc_entry(entry->name, smi->proc_dir); > - kfree(entry->name); > - kfree(entry); > - } > - mutex_unlock(&smi->proc_entry_lock); > - remove_proc_entry(smi->proc_dir_name, proc_ipmi_root); > + if (smi->proc_dir) > + remove_proc_subtree(smi->proc_dir_name, proc_ipmi_root); > +} > +#else > +static int add_proc_entries(ipmi_smi_t smi, int num) > +{ > + return 0; > +} > +static void remove_proc_entries(ipmi_smi_t smi) > +{ > } > #endif /* CONFIG_IPMI_PROC_INTERFACE */ > > @@ -3386,9 +3301,6 @@ int ipmi_register_smi(const struct ipmi_smi_handlers *handlers, > intf->seq_table[j].seqid = 0; > } > intf->curr_seq = 0; > -#ifdef CONFIG_IPMI_PROC_INTERFACE > - mutex_init(&intf->proc_entry_lock); > -#endif > spin_lock_init(&intf->waiting_rcv_msgs_lock); > INIT_LIST_HEAD(&intf->waiting_rcv_msgs); > tasklet_init(&intf->recv_tasklet, > @@ -3410,10 +3322,6 @@ int ipmi_register_smi(const struct ipmi_smi_handlers *handlers, > for (i = 0; i < IPMI_NUM_STATS; i++) > atomic_set(&intf->stats[i], 0); > > -#ifdef CONFIG_IPMI_PROC_INTERFACE > - intf->proc_dir = NULL; > -#endif > - > mutex_lock(&smi_watchers_mutex); > mutex_lock(&ipmi_interfaces_mutex); > /* Look for a hole in the numbers. */ > @@ -3448,17 +3356,11 @@ int ipmi_register_smi(const struct ipmi_smi_handlers *handlers, > if (rv) > goto out; > > -#ifdef CONFIG_IPMI_PROC_INTERFACE > rv = add_proc_entries(intf, i); > -#endif > - > out: > if (rv) { > ipmi_bmc_unregister(intf); > -#ifdef CONFIG_IPMI_PROC_INTERFACE > - if (intf->proc_dir) > - remove_proc_entries(intf); > -#endif > + remove_proc_entries(intf); > intf->handlers = NULL; > list_del_rcu(&intf->link); > mutex_unlock(&ipmi_interfaces_mutex); > @@ -3563,9 +3465,7 @@ int ipmi_unregister_smi(ipmi_smi_t intf) > intf->handlers = NULL; > mutex_unlock(&ipmi_interfaces_mutex); > > -#ifdef CONFIG_IPMI_PROC_INTERFACE > remove_proc_entries(intf); > -#endif > ipmi_bmc_unregister(intf); > > /* > diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c > index ff870aa91cfe..7acc8cbf8d6f 100644 > --- a/drivers/char/ipmi/ipmi_si_intf.c > +++ b/drivers/char/ipmi/ipmi_si_intf.c > @@ -1602,18 +1602,6 @@ static int smi_type_proc_show(struct seq_file *m, void *v) > return 0; > } > > -static int smi_type_proc_open(struct inode *inode, struct file *file) > -{ > - return single_open(file, smi_type_proc_show, PDE_DATA(inode)); > -} > - > -static const struct file_operations smi_type_proc_ops = { > - .open = smi_type_proc_open, > - .read = seq_read, > - .llseek = seq_lseek, > - .release = single_release, > -}; > - > static int smi_si_stats_proc_show(struct seq_file *m, void *v) > { > struct smi_info *smi = m->private; > @@ -1645,18 +1633,6 @@ static int smi_si_stats_proc_show(struct seq_file *m, void *v) > return 0; > } > > -static int smi_si_stats_proc_open(struct inode *inode, struct file *file) > -{ > - return single_open(file, smi_si_stats_proc_show, PDE_DATA(inode)); > -} > - > -static const struct file_operations smi_si_stats_proc_ops = { > - .open = smi_si_stats_proc_open, > - .read = seq_read, > - .llseek = seq_lseek, > - .release = single_release, > -}; > - > static int smi_params_proc_show(struct seq_file *m, void *v) > { > struct smi_info *smi = m->private; > @@ -1674,18 +1650,6 @@ static int smi_params_proc_show(struct seq_file *m, void *v) > > return 0; > } > - > -static int smi_params_proc_open(struct inode *inode, struct file *file) > -{ > - return single_open(file, smi_params_proc_show, PDE_DATA(inode)); > -} > - > -static const struct file_operations smi_params_proc_ops = { > - .open = smi_params_proc_open, > - .read = seq_read, > - .llseek = seq_lseek, > - .release = single_release, > -}; > #endif > > #define IPMI_SI_ATTR(name) \ > @@ -2182,10 +2146,8 @@ static int try_smi_init(struct smi_info *new_smi) > goto out_err; > } > > -#ifdef CONFIG_IPMI_PROC_INTERFACE > rv = ipmi_smi_add_proc_entry(new_smi->intf, "type", > - &smi_type_proc_ops, > - new_smi); > + smi_type_proc_show, new_smi); > if (rv) { > dev_err(new_smi->io.dev, > "Unable to create proc entry: %d\n", rv); > @@ -2193,8 +2155,7 @@ static int try_smi_init(struct smi_info *new_smi) > } > > rv = ipmi_smi_add_proc_entry(new_smi->intf, "si_stats", > - &smi_si_stats_proc_ops, > - new_smi); > + smi_si_stats_proc_show, new_smi); > if (rv) { > dev_err(new_smi->io.dev, > "Unable to create proc entry: %d\n", rv); > @@ -2202,14 +2163,12 @@ static int try_smi_init(struct smi_info *new_smi) > } > > rv = ipmi_smi_add_proc_entry(new_smi->intf, "params", > - &smi_params_proc_ops, > - new_smi); > + smi_params_proc_show, new_smi); > if (rv) { > dev_err(new_smi->io.dev, > "Unable to create proc entry: %d\n", rv); > goto out_err; > } > -#endif > > /* Don't increment till we know we have succeeded. */ > smi_num++; > diff --git a/drivers/char/ipmi/ipmi_ssif.c b/drivers/char/ipmi/ipmi_ssif.c > index 35a82f4bfd78..57f6116a17b2 100644 > --- a/drivers/char/ipmi/ipmi_ssif.c > +++ b/drivers/char/ipmi/ipmi_ssif.c > @@ -1349,18 +1349,6 @@ static int smi_type_proc_show(struct seq_file *m, void *v) > return 0; > } > > -static int smi_type_proc_open(struct inode *inode, struct file *file) > -{ > - return single_open(file, smi_type_proc_show, inode->i_private); > -} > - > -static const struct file_operations smi_type_proc_ops = { > - .open = smi_type_proc_open, > - .read = seq_read, > - .llseek = seq_lseek, > - .release = single_release, > -}; > - > static int smi_stats_proc_show(struct seq_file *m, void *v) > { > struct ssif_info *ssif_info = m->private; > @@ -1393,18 +1381,6 @@ static int smi_stats_proc_show(struct seq_file *m, void *v) > ssif_get_stat(ssif_info, alerts)); > return 0; > } > - > -static int smi_stats_proc_open(struct inode *inode, struct file *file) > -{ > - return single_open(file, smi_stats_proc_show, PDE_DATA(inode)); > -} > - > -static const struct file_operations smi_stats_proc_ops = { > - .open = smi_stats_proc_open, > - .read = seq_read, > - .llseek = seq_lseek, > - .release = single_release, > -}; > #endif > > static int strcmp_nospace(char *s1, char *s2) > @@ -1740,23 +1716,19 @@ static int ssif_probe(struct i2c_client *client, const struct i2c_device_id *id) > goto out_remove_attr; > } > > -#ifdef CONFIG_IPMI_PROC_INTERFACE > rv = ipmi_smi_add_proc_entry(ssif_info->intf, "type", > - &smi_type_proc_ops, > - ssif_info); > + smi_type_proc_show, ssif_info); > if (rv) { > pr_err(PFX "Unable to create proc entry: %d\n", rv); > goto out_err_unreg; > } > > rv = ipmi_smi_add_proc_entry(ssif_info->intf, "ssif_stats", > - &smi_stats_proc_ops, > - ssif_info); > + smi_stats_proc_show, ssif_info); > if (rv) { > pr_err(PFX "Unable to create proc entry: %d\n", rv); > goto out_err_unreg; > } > -#endif > > out: > if (rv) { > @@ -1775,10 +1747,8 @@ static int ssif_probe(struct i2c_client *client, const struct i2c_device_id *id) > kfree(resp); > return rv; > > -#ifdef CONFIG_IPMI_PROC_INTERFACE > out_err_unreg: > ipmi_unregister_smi(ssif_info->intf); > -#endif > > out_remove_attr: > device_remove_group(&ssif_info->client->dev, &ipmi_ssif_dev_attr_group); > diff --git a/include/linux/ipmi_smi.h b/include/linux/ipmi_smi.h > index af457b5a689e..78d9fd480fe8 100644 > --- a/include/linux/ipmi_smi.h > +++ b/include/linux/ipmi_smi.h > @@ -223,12 +223,10 @@ static inline void ipmi_free_smi_msg(struct ipmi_smi_msg *msg) > } > > #ifdef CONFIG_IPMI_PROC_INTERFACE > -/* Allow the lower layer to add things to the proc filesystem > - directory for this interface. Note that the entry will > - automatically be dstroyed when the interface is destroyed. */ > int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name, > - const struct file_operations *proc_ops, > - void *data); > + int (*show)(struct seq_file *, void *), void *data); > +#else > +#define ipmi_smi_add_proc_entry(smi, name, show, data) 0 > #endif > > #endif /* __LINUX_IPMI_SMI_H */
On Thu, Apr 19, 2018 at 10:29:29AM -0500, Corey Minyard wrote: > On 04/19/2018 07:41 AM, Christoph Hellwig wrote: >> Use remove_proc_subtree to remove the whole subtree on cleanup instead >> of a hand rolled list of proc entries, unwind the registration loop into >> individual calls. Switch to use proc_create_single to further simplify >> the code. > > I'm yanking all the proc code out of the IPMI driver in 3.18. So this is > probably > not necessary. Ok, I'll drop this patch.
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c index 361148938801..c18db313e4c4 100644 --- a/drivers/char/ipmi/ipmi_msghandler.c +++ b/drivers/char/ipmi/ipmi_msghandler.c @@ -247,13 +247,6 @@ struct ipmi_my_addrinfo { unsigned char lun; }; -#ifdef CONFIG_IPMI_PROC_INTERFACE -struct ipmi_proc_entry { - char *name; - struct ipmi_proc_entry *next; -}; -#endif - /* * Note that the product id, manufacturer id, guid, and device id are * immutable in this structure, so dyn_mutex is not required for @@ -430,10 +423,6 @@ struct ipmi_smi { void *send_info; #ifdef CONFIG_IPMI_PROC_INTERFACE - /* A list of proc entries for this interface. */ - struct mutex proc_entry_lock; - struct ipmi_proc_entry *proc_entries; - struct proc_dir_entry *proc_dir; char proc_dir_name[10]; #endif @@ -2358,18 +2347,6 @@ static int smi_ipmb_proc_show(struct seq_file *m, void *v) return 0; } -static int smi_ipmb_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, smi_ipmb_proc_show, PDE_DATA(inode)); -} - -static const struct file_operations smi_ipmb_proc_ops = { - .open = smi_ipmb_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - static int smi_version_proc_show(struct seq_file *m, void *v) { ipmi_smi_t intf = m->private; @@ -2387,18 +2364,6 @@ static int smi_version_proc_show(struct seq_file *m, void *v) return 0; } -static int smi_version_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, smi_version_proc_show, PDE_DATA(inode)); -} - -static const struct file_operations smi_version_proc_ops = { - .open = smi_version_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - static int smi_stats_proc_show(struct seq_file *m, void *v) { ipmi_smi_t intf = m->private; @@ -2462,95 +2427,45 @@ static int smi_stats_proc_show(struct seq_file *m, void *v) return 0; } -static int smi_stats_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, smi_stats_proc_show, PDE_DATA(inode)); -} - -static const struct file_operations smi_stats_proc_ops = { - .open = smi_stats_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name, - const struct file_operations *proc_ops, - void *data) + int (*show)(struct seq_file *, void *), void *data) { - int rv = 0; - struct proc_dir_entry *file; - struct ipmi_proc_entry *entry; - - /* Create a list element. */ - entry = kmalloc(sizeof(*entry), GFP_KERNEL); - if (!entry) + if (!proc_create_single_data(name, 0, smi->proc_dir, show, data)) return -ENOMEM; - entry->name = kstrdup(name, GFP_KERNEL); - if (!entry->name) { - kfree(entry); - return -ENOMEM; - } - - file = proc_create_data(name, 0, smi->proc_dir, proc_ops, data); - if (!file) { - kfree(entry->name); - kfree(entry); - rv = -ENOMEM; - } else { - mutex_lock(&smi->proc_entry_lock); - /* Stick it on the list. */ - entry->next = smi->proc_entries; - smi->proc_entries = entry; - mutex_unlock(&smi->proc_entry_lock); - } - - return rv; + return 0; } EXPORT_SYMBOL(ipmi_smi_add_proc_entry); static int add_proc_entries(ipmi_smi_t smi, int num) { - int rv = 0; - sprintf(smi->proc_dir_name, "%d", num); smi->proc_dir = proc_mkdir(smi->proc_dir_name, proc_ipmi_root); if (!smi->proc_dir) - rv = -ENOMEM; - - if (rv == 0) - rv = ipmi_smi_add_proc_entry(smi, "stats", - &smi_stats_proc_ops, - smi); - - if (rv == 0) - rv = ipmi_smi_add_proc_entry(smi, "ipmb", - &smi_ipmb_proc_ops, - smi); - - if (rv == 0) - rv = ipmi_smi_add_proc_entry(smi, "version", - &smi_version_proc_ops, - smi); - - return rv; + return -ENOMEM; + if (!proc_create_single_data("stats", 0, smi->proc_dir, + smi_stats_proc_show, smi)) + return -ENOMEM; + if (!proc_create_single_data("ipmb", 0, smi->proc_dir, + smi_ipmb_proc_show, smi)) + return -ENOMEM; + if (!proc_create_single_data("version", 0, smi->proc_dir, + smi_version_proc_show, smi)) + return -ENOMEM; + return 0; } static void remove_proc_entries(ipmi_smi_t smi) { - struct ipmi_proc_entry *entry; - - mutex_lock(&smi->proc_entry_lock); - while (smi->proc_entries) { - entry = smi->proc_entries; - smi->proc_entries = entry->next; - - remove_proc_entry(entry->name, smi->proc_dir); - kfree(entry->name); - kfree(entry); - } - mutex_unlock(&smi->proc_entry_lock); - remove_proc_entry(smi->proc_dir_name, proc_ipmi_root); + if (smi->proc_dir) + remove_proc_subtree(smi->proc_dir_name, proc_ipmi_root); +} +#else +static int add_proc_entries(ipmi_smi_t smi, int num) +{ + return 0; +} +static void remove_proc_entries(ipmi_smi_t smi) +{ } #endif /* CONFIG_IPMI_PROC_INTERFACE */ @@ -3386,9 +3301,6 @@ int ipmi_register_smi(const struct ipmi_smi_handlers *handlers, intf->seq_table[j].seqid = 0; } intf->curr_seq = 0; -#ifdef CONFIG_IPMI_PROC_INTERFACE - mutex_init(&intf->proc_entry_lock); -#endif spin_lock_init(&intf->waiting_rcv_msgs_lock); INIT_LIST_HEAD(&intf->waiting_rcv_msgs); tasklet_init(&intf->recv_tasklet, @@ -3410,10 +3322,6 @@ int ipmi_register_smi(const struct ipmi_smi_handlers *handlers, for (i = 0; i < IPMI_NUM_STATS; i++) atomic_set(&intf->stats[i], 0); -#ifdef CONFIG_IPMI_PROC_INTERFACE - intf->proc_dir = NULL; -#endif - mutex_lock(&smi_watchers_mutex); mutex_lock(&ipmi_interfaces_mutex); /* Look for a hole in the numbers. */ @@ -3448,17 +3356,11 @@ int ipmi_register_smi(const struct ipmi_smi_handlers *handlers, if (rv) goto out; -#ifdef CONFIG_IPMI_PROC_INTERFACE rv = add_proc_entries(intf, i); -#endif - out: if (rv) { ipmi_bmc_unregister(intf); -#ifdef CONFIG_IPMI_PROC_INTERFACE - if (intf->proc_dir) - remove_proc_entries(intf); -#endif + remove_proc_entries(intf); intf->handlers = NULL; list_del_rcu(&intf->link); mutex_unlock(&ipmi_interfaces_mutex); @@ -3563,9 +3465,7 @@ int ipmi_unregister_smi(ipmi_smi_t intf) intf->handlers = NULL; mutex_unlock(&ipmi_interfaces_mutex); -#ifdef CONFIG_IPMI_PROC_INTERFACE remove_proc_entries(intf); -#endif ipmi_bmc_unregister(intf); /* diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c index ff870aa91cfe..7acc8cbf8d6f 100644 --- a/drivers/char/ipmi/ipmi_si_intf.c +++ b/drivers/char/ipmi/ipmi_si_intf.c @@ -1602,18 +1602,6 @@ static int smi_type_proc_show(struct seq_file *m, void *v) return 0; } -static int smi_type_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, smi_type_proc_show, PDE_DATA(inode)); -} - -static const struct file_operations smi_type_proc_ops = { - .open = smi_type_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - static int smi_si_stats_proc_show(struct seq_file *m, void *v) { struct smi_info *smi = m->private; @@ -1645,18 +1633,6 @@ static int smi_si_stats_proc_show(struct seq_file *m, void *v) return 0; } -static int smi_si_stats_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, smi_si_stats_proc_show, PDE_DATA(inode)); -} - -static const struct file_operations smi_si_stats_proc_ops = { - .open = smi_si_stats_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - static int smi_params_proc_show(struct seq_file *m, void *v) { struct smi_info *smi = m->private; @@ -1674,18 +1650,6 @@ static int smi_params_proc_show(struct seq_file *m, void *v) return 0; } - -static int smi_params_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, smi_params_proc_show, PDE_DATA(inode)); -} - -static const struct file_operations smi_params_proc_ops = { - .open = smi_params_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; #endif #define IPMI_SI_ATTR(name) \ @@ -2182,10 +2146,8 @@ static int try_smi_init(struct smi_info *new_smi) goto out_err; } -#ifdef CONFIG_IPMI_PROC_INTERFACE rv = ipmi_smi_add_proc_entry(new_smi->intf, "type", - &smi_type_proc_ops, - new_smi); + smi_type_proc_show, new_smi); if (rv) { dev_err(new_smi->io.dev, "Unable to create proc entry: %d\n", rv); @@ -2193,8 +2155,7 @@ static int try_smi_init(struct smi_info *new_smi) } rv = ipmi_smi_add_proc_entry(new_smi->intf, "si_stats", - &smi_si_stats_proc_ops, - new_smi); + smi_si_stats_proc_show, new_smi); if (rv) { dev_err(new_smi->io.dev, "Unable to create proc entry: %d\n", rv); @@ -2202,14 +2163,12 @@ static int try_smi_init(struct smi_info *new_smi) } rv = ipmi_smi_add_proc_entry(new_smi->intf, "params", - &smi_params_proc_ops, - new_smi); + smi_params_proc_show, new_smi); if (rv) { dev_err(new_smi->io.dev, "Unable to create proc entry: %d\n", rv); goto out_err; } -#endif /* Don't increment till we know we have succeeded. */ smi_num++; diff --git a/drivers/char/ipmi/ipmi_ssif.c b/drivers/char/ipmi/ipmi_ssif.c index 35a82f4bfd78..57f6116a17b2 100644 --- a/drivers/char/ipmi/ipmi_ssif.c +++ b/drivers/char/ipmi/ipmi_ssif.c @@ -1349,18 +1349,6 @@ static int smi_type_proc_show(struct seq_file *m, void *v) return 0; } -static int smi_type_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, smi_type_proc_show, inode->i_private); -} - -static const struct file_operations smi_type_proc_ops = { - .open = smi_type_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - static int smi_stats_proc_show(struct seq_file *m, void *v) { struct ssif_info *ssif_info = m->private; @@ -1393,18 +1381,6 @@ static int smi_stats_proc_show(struct seq_file *m, void *v) ssif_get_stat(ssif_info, alerts)); return 0; } - -static int smi_stats_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, smi_stats_proc_show, PDE_DATA(inode)); -} - -static const struct file_operations smi_stats_proc_ops = { - .open = smi_stats_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; #endif static int strcmp_nospace(char *s1, char *s2) @@ -1740,23 +1716,19 @@ static int ssif_probe(struct i2c_client *client, const struct i2c_device_id *id) goto out_remove_attr; } -#ifdef CONFIG_IPMI_PROC_INTERFACE rv = ipmi_smi_add_proc_entry(ssif_info->intf, "type", - &smi_type_proc_ops, - ssif_info); + smi_type_proc_show, ssif_info); if (rv) { pr_err(PFX "Unable to create proc entry: %d\n", rv); goto out_err_unreg; } rv = ipmi_smi_add_proc_entry(ssif_info->intf, "ssif_stats", - &smi_stats_proc_ops, - ssif_info); + smi_stats_proc_show, ssif_info); if (rv) { pr_err(PFX "Unable to create proc entry: %d\n", rv); goto out_err_unreg; } -#endif out: if (rv) { @@ -1775,10 +1747,8 @@ static int ssif_probe(struct i2c_client *client, const struct i2c_device_id *id) kfree(resp); return rv; -#ifdef CONFIG_IPMI_PROC_INTERFACE out_err_unreg: ipmi_unregister_smi(ssif_info->intf); -#endif out_remove_attr: device_remove_group(&ssif_info->client->dev, &ipmi_ssif_dev_attr_group); diff --git a/include/linux/ipmi_smi.h b/include/linux/ipmi_smi.h index af457b5a689e..78d9fd480fe8 100644 --- a/include/linux/ipmi_smi.h +++ b/include/linux/ipmi_smi.h @@ -223,12 +223,10 @@ static inline void ipmi_free_smi_msg(struct ipmi_smi_msg *msg) } #ifdef CONFIG_IPMI_PROC_INTERFACE -/* Allow the lower layer to add things to the proc filesystem - directory for this interface. Note that the entry will - automatically be dstroyed when the interface is destroyed. */ int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name, - const struct file_operations *proc_ops, - void *data); + int (*show)(struct seq_file *, void *), void *data); +#else +#define ipmi_smi_add_proc_entry(smi, name, show, data) 0 #endif #endif /* __LINUX_IPMI_SMI_H */
Use remove_proc_subtree to remove the whole subtree on cleanup instead of a hand rolled list of proc entries, unwind the registration loop into individual calls. Switch to use proc_create_single to further simplify the code. Signed-off-by: Christoph Hellwig <hch@lst.de> --- drivers/char/ipmi/ipmi_msghandler.c | 150 +++++----------------------- drivers/char/ipmi/ipmi_si_intf.c | 47 +-------- drivers/char/ipmi/ipmi_ssif.c | 34 +------ include/linux/ipmi_smi.h | 8 +- 4 files changed, 33 insertions(+), 206 deletions(-)