From 3f3942aca6da351a12543aa776467791b63b3a78 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 15 May 2018 15:57:23 +0200 Subject: proc: introduce proc_create_single{,_data} Variants of proc_create{,_data} that directly take a seq_file show callback and drastically reduces the boilerplate code in the callers. All trivial callers converted over. Signed-off-by: Christoph Hellwig --- drivers/block/DAC960.c | 49 ++++++------------------------------------------- drivers/block/pktcdvd.c | 14 +------------- drivers/block/ps3vram.c | 17 ++--------------- 3 files changed, 9 insertions(+), 71 deletions(-) (limited to 'drivers/block') diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c index f781eff7d23e..6918c3d9482e 100644 --- a/drivers/block/DAC960.c +++ b/drivers/block/DAC960.c @@ -6451,19 +6451,6 @@ static int dac960_proc_show(struct seq_file *m, void *v) return 0; } -static int dac960_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, dac960_proc_show, NULL); -} - -static const struct file_operations dac960_proc_fops = { - .owner = THIS_MODULE, - .open = dac960_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - static int dac960_initial_status_proc_show(struct seq_file *m, void *v) { DAC960_Controller_T *Controller = (DAC960_Controller_T *)m->private; @@ -6471,19 +6458,6 @@ static int dac960_initial_status_proc_show(struct seq_file *m, void *v) return 0; } -static int dac960_initial_status_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, dac960_initial_status_proc_show, PDE_DATA(inode)); -} - -static const struct file_operations dac960_initial_status_proc_fops = { - .owner = THIS_MODULE, - .open = dac960_initial_status_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - static int dac960_current_status_proc_show(struct seq_file *m, void *v) { DAC960_Controller_T *Controller = (DAC960_Controller_T *) m->private; @@ -6517,19 +6491,6 @@ static int dac960_current_status_proc_show(struct seq_file *m, void *v) return 0; } -static int dac960_current_status_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, dac960_current_status_proc_show, PDE_DATA(inode)); -} - -static const struct file_operations dac960_current_status_proc_fops = { - .owner = THIS_MODULE, - .open = dac960_current_status_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - static int dac960_user_command_proc_show(struct seq_file *m, void *v) { DAC960_Controller_T *Controller = (DAC960_Controller_T *)m->private; @@ -6584,16 +6545,18 @@ static void DAC960_CreateProcEntries(DAC960_Controller_T *Controller) if (DAC960_ProcDirectoryEntry == NULL) { DAC960_ProcDirectoryEntry = proc_mkdir("rd", NULL); - proc_create("status", 0, DAC960_ProcDirectoryEntry, - &dac960_proc_fops); + proc_create_single("status", 0, DAC960_ProcDirectoryEntry, + dac960_proc_show); } snprintf(Controller->ControllerName, sizeof(Controller->ControllerName), "c%d", Controller->ControllerNumber); ControllerProcEntry = proc_mkdir(Controller->ControllerName, DAC960_ProcDirectoryEntry); - proc_create_data("initial_status", 0, ControllerProcEntry, &dac960_initial_status_proc_fops, Controller); - proc_create_data("current_status", 0, ControllerProcEntry, &dac960_current_status_proc_fops, Controller); + proc_create_single_data("initial_status", 0, ControllerProcEntry, + dac960_initial_status_proc_show, Controller); + proc_create_single_data("current_status", 0, ControllerProcEntry, + dac960_current_status_proc_show, Controller); proc_create_data("user_command", S_IWUSR | S_IRUSR, ControllerProcEntry, &dac960_user_command_proc_fops, Controller); Controller->ControllerProcEntry = ControllerProcEntry; } diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index c61d20c9f3f8..8dce5c04dbf2 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -2538,18 +2538,6 @@ static int pkt_seq_show(struct seq_file *m, void *p) return 0; } -static int pkt_seq_open(struct inode *inode, struct file *file) -{ - return single_open(file, pkt_seq_show, PDE_DATA(inode)); -} - -static const struct file_operations pkt_proc_fops = { - .open = pkt_seq_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release -}; - static int pkt_new_dev(struct pktcdvd_device *pd, dev_t dev) { int i; @@ -2604,7 +2592,7 @@ static int pkt_new_dev(struct pktcdvd_device *pd, dev_t dev) goto out_mem; } - proc_create_data(pd->name, 0, pkt_proc, &pkt_proc_fops, pd); + proc_create_single_data(pd->name, 0, pkt_proc, pkt_seq_show, pd); pkt_dbg(1, pd, "writer mapped to %s\n", bdevname(bdev, b)); return 0; diff --git a/drivers/block/ps3vram.c b/drivers/block/ps3vram.c index 6a55959cbf78..8fa4533a1249 100644 --- a/drivers/block/ps3vram.c +++ b/drivers/block/ps3vram.c @@ -521,26 +521,13 @@ static int ps3vram_proc_show(struct seq_file *m, void *v) return 0; } -static int ps3vram_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, ps3vram_proc_show, PDE_DATA(inode)); -} - -static const struct file_operations ps3vram_proc_fops = { - .owner = THIS_MODULE, - .open = ps3vram_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - static void ps3vram_proc_init(struct ps3_system_bus_device *dev) { struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); struct proc_dir_entry *pde; - pde = proc_create_data(DEVICE_NAME, 0444, NULL, &ps3vram_proc_fops, - priv); + pde = proc_create_single_data(DEVICE_NAME, 0444, NULL, + ps3vram_proc_show, priv); if (!pde) dev_warn(&dev->core, "failed to create /proc entry\n"); } -- cgit v1.2.3 From 004fd11db1d6186ef04c6af688c572deb3b12369 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 11 Apr 2018 16:46:11 +0200 Subject: drbd: switch to proc_create_single And stop messing with try_module_get on THIS_MODULE, which doesn't make any sense here. Signed-off-by: Christoph Hellwig --- drivers/block/drbd/drbd_int.h | 2 +- drivers/block/drbd/drbd_main.c | 3 ++- drivers/block/drbd/drbd_proc.c | 34 +--------------------------------- 3 files changed, 4 insertions(+), 35 deletions(-) (limited to 'drivers/block') diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h index 06ecee1b528e..461ddec04e7c 100644 --- a/drivers/block/drbd/drbd_int.h +++ b/drivers/block/drbd/drbd_int.h @@ -1643,7 +1643,7 @@ void drbd_bump_write_ordering(struct drbd_resource *resource, struct drbd_backin /* drbd_proc.c */ extern struct proc_dir_entry *drbd_proc; -extern const struct file_operations drbd_proc_fops; +int drbd_seq_show(struct seq_file *seq, void *v); /* drbd_actlog.c */ extern bool drbd_al_begin_io_prepare(struct drbd_device *device, struct drbd_interval *i); diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c index 185f1ef00a7c..c2d154faac02 100644 --- a/drivers/block/drbd/drbd_main.c +++ b/drivers/block/drbd/drbd_main.c @@ -3010,7 +3010,8 @@ static int __init drbd_init(void) goto fail; err = -ENOMEM; - drbd_proc = proc_create_data("drbd", S_IFREG | S_IRUGO , NULL, &drbd_proc_fops, NULL); + drbd_proc = proc_create_single("drbd", S_IFREG | S_IRUGO , NULL, + drbd_seq_show); if (!drbd_proc) { pr_err("unable to register proc file\n"); goto fail; diff --git a/drivers/block/drbd/drbd_proc.c b/drivers/block/drbd/drbd_proc.c index 582caeb0de86..74ef29247bb5 100644 --- a/drivers/block/drbd/drbd_proc.c +++ b/drivers/block/drbd/drbd_proc.c @@ -33,18 +33,7 @@ #include #include "drbd_int.h" -static int drbd_proc_open(struct inode *inode, struct file *file); -static int drbd_proc_release(struct inode *inode, struct file *file); - - struct proc_dir_entry *drbd_proc; -const struct file_operations drbd_proc_fops = { - .owner = THIS_MODULE, - .open = drbd_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = drbd_proc_release, -}; static void seq_printf_with_thousands_grouping(struct seq_file *seq, long v) { @@ -235,7 +224,7 @@ static void drbd_syncer_progress(struct drbd_device *device, struct seq_file *se } } -static int drbd_seq_show(struct seq_file *seq, void *v) +int drbd_seq_show(struct seq_file *seq, void *v) { int i, prev_i = -1; const char *sn; @@ -345,24 +334,3 @@ static int drbd_seq_show(struct seq_file *seq, void *v) return 0; } - -static int drbd_proc_open(struct inode *inode, struct file *file) -{ - int err; - - if (try_module_get(THIS_MODULE)) { - err = single_open(file, drbd_seq_show, NULL); - if (err) - module_put(THIS_MODULE); - return err; - } - return -ENODEV; -} - -static int drbd_proc_release(struct inode *inode, struct file *file) -{ - module_put(THIS_MODULE); - return single_release(inode, file); -} - -/* PROC FS stuff end */ -- cgit v1.2.3