From 03b642a7019a8ec28a450fd4c55f3048ce320f6b Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 28 Mar 2013 18:11:13 -0400 Subject: atags_proc: switch to proc_create_data() Signed-off-by: Al Viro --- arch/arm/kernel/atags_proc.c | 28 ++++++++++------------------ 1 file changed, 10 insertions(+), 18 deletions(-) (limited to 'arch/arm') diff --git a/arch/arm/kernel/atags_proc.c b/arch/arm/kernel/atags_proc.c index 42a1a1415fa6..8c00f75bf1ab 100644 --- a/arch/arm/kernel/atags_proc.c +++ b/arch/arm/kernel/atags_proc.c @@ -9,24 +9,18 @@ struct buffer { char data[]; }; -static int -read_buffer(char* page, char** start, off_t off, int count, - int* eof, void* data) +static ssize_t atags_read(struct file *file, char __user *buf, + size_t count, loff_t *ppos) { - struct buffer *buffer = (struct buffer *)data; - - if (off >= buffer->size) { - *eof = 1; - return 0; - } - - count = min((int) (buffer->size - off), count); - - memcpy(page, &buffer->data[off], count); - - return count; + struct buffer *b = PDE(file_inode(file))->data; + return simple_read_from_buffer(buf, count, ppos, b->data, b->size); } +static const struct file_operations atags_fops = { + .read = atags_read, + .llseek = default_llseek, +}; + #define BOOT_PARAMS_SIZE 1536 static char __initdata atags_copy[BOOT_PARAMS_SIZE]; @@ -66,9 +60,7 @@ static int __init init_atags_procfs(void) b->size = size; memcpy(b->data, atags_copy, size); - tags_entry = create_proc_read_entry("atags", 0400, - NULL, read_buffer, b); - + tags_entry = proc_create_data("atags", 0400, NULL, &atags_fops, b); if (!tags_entry) goto nomem; -- cgit v1.2.2 From e784788ddb7000dbea8bd2986a3f83c4d77f96ff Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 30 Mar 2013 13:26:37 -0400 Subject: get rid of a bunch of open-coded create_proc_read_entry() Signed-off-by: Al Viro --- arch/arm/kernel/swp_emulate.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'arch/arm') diff --git a/arch/arm/kernel/swp_emulate.c b/arch/arm/kernel/swp_emulate.c index ab1017bd1667..0bba47ada5bd 100644 --- a/arch/arm/kernel/swp_emulate.c +++ b/arch/arm/kernel/swp_emulate.c @@ -268,12 +268,11 @@ static int __init swp_emulation_init(void) #ifdef CONFIG_PROC_FS struct proc_dir_entry *res; - res = create_proc_entry("cpu/swp_emulation", S_IRUGO, NULL); + res = create_proc_read_entry("cpu/swp_emulation", S_IRUGO, NULL, + proc_read_status, NULL); if (!res) return -ENOMEM; - - res->read_proc = proc_read_status; #endif /* CONFIG_PROC_FS */ printk(KERN_NOTICE "Registering SWP/SWPB emulation handler\n"); -- cgit v1.2.2 From 8510e30b46cd5467b2f930bef68a276dbc2c7d7c Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 31 Mar 2013 15:41:41 -0400 Subject: last_radio_log: switch to proc_create() Signed-off-by: Al Viro --- arch/arm/mach-msm/last_radio_log.c | 20 ++++---------------- 1 file changed, 4 insertions(+), 16 deletions(-) (limited to 'arch/arm') diff --git a/arch/arm/mach-msm/last_radio_log.c b/arch/arm/mach-msm/last_radio_log.c index 1e243f46a969..7777767ee89a 100644 --- a/arch/arm/mach-msm/last_radio_log.c +++ b/arch/arm/mach-msm/last_radio_log.c @@ -31,20 +31,8 @@ extern void *smem_item(unsigned id, unsigned *size); static ssize_t last_radio_log_read(struct file *file, char __user *buf, size_t len, loff_t *offset) { - loff_t pos = *offset; - ssize_t count; - - if (pos >= radio_log_size) - return 0; - - count = min(len, (size_t)(radio_log_size - pos)); - if (copy_to_user(buf, radio_log_base + pos, count)) { - pr_err("%s: copy to user failed\n", __func__); - return -EFAULT; - } - - *offset += count; - return count; + return simple_read_from_buffer(buf, len, offset, + radio_log_base, radio_log_size); } static struct file_operations last_radio_log_fops = { @@ -67,7 +55,8 @@ void msm_init_last_radio_log(struct module *owner) return; } - entry = create_proc_entry("last_radio_log", S_IFREG | S_IRUGO, NULL); + entry = proc_create("last_radio_log", S_IRUGO, NULL, + &last_radio_log_fops); if (!entry) { pr_err("%s: could not create proc entry for radio log\n", __func__); @@ -77,7 +66,6 @@ void msm_init_last_radio_log(struct module *owner) pr_err("%s: last radio log is %d bytes long\n", __func__, radio_log_size); last_radio_log_fops.owner = owner; - entry->proc_fops = &last_radio_log_fops; entry->size = radio_log_size; } EXPORT_SYMBOL(msm_init_last_radio_log); -- cgit v1.2.2 From d9dda78bad879595d8c4220a067fc029d6484a16 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 31 Mar 2013 18:16:14 -0400 Subject: procfs: new helper - PDE_DATA(inode) The only part of proc_dir_entry the code outside of fs/proc really cares about is PDE(inode)->data. Provide a helper for that; static inline for now, eventually will be moved to fs/proc, along with the knowledge of struct proc_dir_entry layout. Signed-off-by: Al Viro --- arch/arm/kernel/atags_proc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/arm') diff --git a/arch/arm/kernel/atags_proc.c b/arch/arm/kernel/atags_proc.c index 8c00f75bf1ab..c7ff8073416f 100644 --- a/arch/arm/kernel/atags_proc.c +++ b/arch/arm/kernel/atags_proc.c @@ -12,7 +12,7 @@ struct buffer { static ssize_t atags_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { - struct buffer *b = PDE(file_inode(file))->data; + struct buffer *b = PDE_DATA(file_inode(file)); return simple_read_from_buffer(buf, count, ppos, b->data, b->size); } -- cgit v1.2.2 From f9368c18e9a99d86c509ac113363e9d295e0bf74 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Thu, 11 Apr 2013 11:03:41 -0700 Subject: ARM: OMAP1: Replace PM debug create_proc_read_entry() with debugfs There's no need to keep this entry in proc, it is PM related debug only entry. Let's move it into debugfs. Based on an earlier patch David Howells to use seq_printf and to update to use create_proc_read_entry(). Signed-off-by: Tony Lindgren Signed-off-by: David Howells Signed-off-by: Al Viro --- arch/arm/mach-omap1/pm.c | 78 +++++++++++++++++++++++------------------------- 1 file changed, 37 insertions(+), 41 deletions(-) (limited to 'arch/arm') diff --git a/arch/arm/mach-omap1/pm.c b/arch/arm/mach-omap1/pm.c index 7a7690ab6cb8..ff72d297a172 100644 --- a/arch/arm/mach-omap1/pm.c +++ b/arch/arm/mach-omap1/pm.c @@ -37,7 +37,8 @@ #include #include -#include +#include +#include #include #include #include @@ -422,23 +423,12 @@ void omap1_pm_suspend(void) omap_rev()); } -#if defined(DEBUG) && defined(CONFIG_PROC_FS) -static int g_read_completed; - +#ifdef CONFIG_DEBUG_FS /* * Read system PM registers for debugging */ -static int omap_pm_read_proc( - char *page_buffer, - char **my_first_byte, - off_t virtual_start, - int length, - int *eof, - void *data) +static int omap_pm_debug_show(struct seq_file *m, void *v) { - int my_buffer_offset = 0; - char * const my_base = page_buffer; - ARM_SAVE(ARM_CKCTL); ARM_SAVE(ARM_IDLECT1); ARM_SAVE(ARM_IDLECT2); @@ -479,10 +469,7 @@ static int omap_pm_read_proc( MPUI1610_SAVE(EMIFS_CONFIG); } - if (virtual_start == 0) { - g_read_completed = 0; - - my_buffer_offset += sprintf(my_base + my_buffer_offset, + seq_printf(m, "ARM_CKCTL_REG: 0x%-8x \n" "ARM_IDLECT1_REG: 0x%-8x \n" "ARM_IDLECT2_REG: 0x%-8x \n" @@ -512,8 +499,8 @@ static int omap_pm_read_proc( ULPD_SHOW(ULPD_STATUS_REQ), ULPD_SHOW(ULPD_POWER_CTRL)); - if (cpu_is_omap7xx()) { - my_buffer_offset += sprintf(my_base + my_buffer_offset, + if (cpu_is_omap7xx()) { + seq_printf(m, "MPUI7XX_CTRL_REG 0x%-8x \n" "MPUI7XX_DSP_STATUS_REG: 0x%-8x \n" "MPUI7XX_DSP_BOOT_CONFIG_REG: 0x%-8x \n" @@ -526,8 +513,8 @@ static int omap_pm_read_proc( MPUI7XX_SHOW(MPUI_DSP_API_CONFIG), MPUI7XX_SHOW(EMIFF_SDRAM_CONFIG), MPUI7XX_SHOW(EMIFS_CONFIG)); - } else if (cpu_is_omap15xx()) { - my_buffer_offset += sprintf(my_base + my_buffer_offset, + } else if (cpu_is_omap15xx()) { + seq_printf(m, "MPUI1510_CTRL_REG 0x%-8x \n" "MPUI1510_DSP_STATUS_REG: 0x%-8x \n" "MPUI1510_DSP_BOOT_CONFIG_REG: 0x%-8x \n" @@ -540,8 +527,8 @@ static int omap_pm_read_proc( MPUI1510_SHOW(MPUI_DSP_API_CONFIG), MPUI1510_SHOW(EMIFF_SDRAM_CONFIG), MPUI1510_SHOW(EMIFS_CONFIG)); - } else if (cpu_is_omap16xx()) { - my_buffer_offset += sprintf(my_base + my_buffer_offset, + } else if (cpu_is_omap16xx()) { + seq_printf(m, "MPUI1610_CTRL_REG 0x%-8x \n" "MPUI1610_DSP_STATUS_REG: 0x%-8x \n" "MPUI1610_DSP_BOOT_CONFIG_REG: 0x%-8x \n" @@ -554,28 +541,37 @@ static int omap_pm_read_proc( MPUI1610_SHOW(MPUI_DSP_API_CONFIG), MPUI1610_SHOW(EMIFF_SDRAM_CONFIG), MPUI1610_SHOW(EMIFS_CONFIG)); - } - - g_read_completed++; - } else if (g_read_completed >= 1) { - *eof = 1; - return 0; } - g_read_completed++; - *my_first_byte = page_buffer; - return my_buffer_offset; + return 0; +} + +static int omap_pm_debug_open(struct inode *inode, struct file *file) +{ + return single_open(file, omap_pm_debug_show, + &inode->i_private); } -static void omap_pm_init_proc(void) +static const struct file_operations omap_pm_debug_fops = { + .open = omap_pm_debug_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, +}; + +static void omap_pm_init_debugfs(void) { - /* XXX Appears to leak memory */ - create_proc_read_entry("driver/omap_pm", - S_IWUSR | S_IRUGO, NULL, - omap_pm_read_proc, NULL); + struct dentry *d; + + d = debugfs_create_dir("pm_debug", NULL); + if (!d) + return; + + (void) debugfs_create_file("omap_pm", S_IWUSR | S_IRUGO, + d, NULL, &omap_pm_debug_fops); } -#endif /* DEBUG && CONFIG_PROC_FS */ +#endif /* CONFIG_DEBUG_FS */ /* * omap_pm_prepare - Do preliminary suspend work. @@ -701,8 +697,8 @@ static int __init omap_pm_init(void) suspend_set_ops(&omap_pm_ops); -#if defined(DEBUG) && defined(CONFIG_PROC_FS) - omap_pm_init_proc(); +#ifdef CONFIG_DEBUG_FS + omap_pm_init_debugfs(); #endif #ifdef CONFIG_OMAP_32K_TIMER -- cgit v1.2.2 From 526c59784c09fb794a5f0181429525bc473453c9 Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 11 Apr 2013 03:05:01 +0100 Subject: arm: Don't use create_proc_read_entry() Don't use create_proc_read_entry() as that is deprecated, but rather use proc_create_data() and seq_file instead. Signed-off-by: David Howells cc: Russell King cc: Kevin Hilman cc: Tony Lindgren cc: linux-arm-kernel@lists.infradead.org cc: linux-omap@vger.kernel.org Signed-off-by: Al Viro --- arch/arm/kernel/swp_emulate.c | 42 +++++++++++++++++++----------------------- 1 file changed, 19 insertions(+), 23 deletions(-) (limited to 'arch/arm') diff --git a/arch/arm/kernel/swp_emulate.c b/arch/arm/kernel/swp_emulate.c index 0bba47ada5bd..087fc321e9e5 100644 --- a/arch/arm/kernel/swp_emulate.c +++ b/arch/arm/kernel/swp_emulate.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include #include @@ -79,27 +80,27 @@ static unsigned long abtcounter; static pid_t previous_pid; #ifdef CONFIG_PROC_FS -static int proc_read_status(char *page, char **start, off_t off, int count, - int *eof, void *data) +static int proc_status_show(struct seq_file *m, void *v) { - char *p = page; - int len; - - p += sprintf(p, "Emulated SWP:\t\t%lu\n", swpcounter); - p += sprintf(p, "Emulated SWPB:\t\t%lu\n", swpbcounter); - p += sprintf(p, "Aborted SWP{B}:\t\t%lu\n", abtcounter); + seq_printf(m, "Emulated SWP:\t\t%lu\n", swpcounter); + seq_printf(m, "Emulated SWPB:\t\t%lu\n", swpbcounter); + seq_printf(m, "Aborted SWP{B}:\t\t%lu\n", abtcounter); if (previous_pid != 0) - p += sprintf(p, "Last process:\t\t%d\n", previous_pid); - - len = (p - page) - off; - if (len < 0) - len = 0; - - *eof = (len <= count) ? 1 : 0; - *start = page + off; + seq_printf(m, "Last process:\t\t%d\n", previous_pid); + return 0; +} - return len; +static int proc_status_open(struct inode *inode, struct file *file) +{ + return single_open(file, proc_status_show, PDE_DATA(inode)); } + +static const struct file_operations proc_status_fops = { + .open = proc_status_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, +}; #endif /* @@ -266,12 +267,7 @@ static struct undef_hook swp_hook = { static int __init swp_emulation_init(void) { #ifdef CONFIG_PROC_FS - struct proc_dir_entry *res; - - res = create_proc_read_entry("cpu/swp_emulation", S_IRUGO, NULL, - proc_read_status, NULL); - - if (!res) + if (!proc_create("cpu/swp_emulation", S_IRUGO, NULL, &proc_status_fops)) return -ENOMEM; #endif /* CONFIG_PROC_FS */ -- cgit v1.2.2