From patchwork Fri Sep 18 19:41:08 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 48599 Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id n8IJgdFW004155 for ; Fri, 18 Sep 2009 19:42:39 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757723AbZIRTme (ORCPT ); Fri, 18 Sep 2009 15:42:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757996AbZIRTmd (ORCPT ); Fri, 18 Sep 2009 15:42:33 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:41276 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757615AbZIRTm3 (ORCPT ); Fri, 18 Sep 2009 15:42:29 -0400 Received: from imap1.linux-foundation.org (imap1.linux-foundation.org [140.211.169.55]) by smtp1.linux-foundation.org (8.14.2/8.13.5/Debian-3ubuntu1.1) with ESMTP id n8IJf9oM007330 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 18 Sep 2009 12:41:10 -0700 Received: from localhost.localdomain (localhost [127.0.0.1]) by imap1.linux-foundation.org (8.13.5.20060308/8.13.5/Debian-3ubuntu1.1) with ESMTP id n8IJf8fT002535; Fri, 18 Sep 2009 12:41:08 -0700 Message-Id: <200909181941.n8IJf8fT002535@imap1.linux-foundation.org> Subject: [patch 5/8] acpi: switch /proc/acpi/{debug_layer, debug_level} to seq_file To: lenb@kernel.org Cc: linux-acpi@vger.kernel.org, akpm@linux-foundation.org, adobriyan@gmail.com From: akpm@linux-foundation.org Date: Fri, 18 Sep 2009 12:41:08 -0700 MIME-Version: 1.0 X-Spam-Status: No, hits=-3.513 required=5 tests=AWL, BAYES_00, OSDL_HEADER_SUBJECT_BRACKETED X-Spam-Checker-Version: SpamAssassin 3.2.4-osdl_revision__1.47__ X-MIMEDefang-Filter: lf$Revision: 1.188 $ X-Scanned-By: MIMEDefang 2.63 on 140.211.169.13 Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org From: Alexey Dobriyan Signed-off-by: Alexey Dobriyan Cc: Len Brown Signed-off-by: Andrew Morton --- drivers/acpi/debug.c | 82 +++++++++++++++++------------------------ 1 file changed, 34 insertions(+), 48 deletions(-) diff -puN drivers/acpi/debug.c~acpi-switch-proc-acpi-debug_layerdebug_level-to-seq_file drivers/acpi/debug.c --- a/drivers/acpi/debug.c~acpi-switch-proc-acpi-debug_layerdebug_level-to-seq_file +++ a/drivers/acpi/debug.c @@ -3,6 +3,7 @@ */ #include +#include #include #include #include @@ -201,72 +202,54 @@ module_param_call(trace_state, param_set #define ACPI_SYSTEM_FILE_DEBUG_LAYER "debug_layer" #define ACPI_SYSTEM_FILE_DEBUG_LEVEL "debug_level" -static int -acpi_system_read_debug(char *page, - char **start, off_t off, int count, int *eof, void *data) +static int acpi_system_debug_proc_show(struct seq_file *m, void *v) { - char *p = page; - int size = 0; unsigned int i; - if (off != 0) - goto end; + seq_printf(m, "%-25s\tHex SET\n", "Description"); - p += sprintf(p, "%-25s\tHex SET\n", "Description"); - - switch ((unsigned long)data) { + switch ((unsigned long)m->private) { case 0: for (i = 0; i < ARRAY_SIZE(acpi_debug_layers); i++) { - p += sprintf(p, "%-25s\t0x%08lX [%c]\n", + seq_printf(m, "%-25s\t0x%08lX [%c]\n", acpi_debug_layers[i].name, acpi_debug_layers[i].value, (acpi_dbg_layer & acpi_debug_layers[i]. value) ? '*' : ' '); } - p += sprintf(p, "%-25s\t0x%08X [%c]\n", "ACPI_ALL_DRIVERS", + seq_printf(m, "%-25s\t0x%08X [%c]\n", "ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS, (acpi_dbg_layer & ACPI_ALL_DRIVERS) == ACPI_ALL_DRIVERS ? '*' : (acpi_dbg_layer & ACPI_ALL_DRIVERS) == 0 ? ' ' : '-'); - p += sprintf(p, + seq_printf(m, "--\ndebug_layer = 0x%08X (* = enabled, - = partial)\n", acpi_dbg_layer); break; case 1: for (i = 0; i < ARRAY_SIZE(acpi_debug_levels); i++) { - p += sprintf(p, "%-25s\t0x%08lX [%c]\n", + seq_printf(m, "%-25s\t0x%08lX [%c]\n", acpi_debug_levels[i].name, acpi_debug_levels[i].value, (acpi_dbg_level & acpi_debug_levels[i]. value) ? '*' : ' '); } - p += sprintf(p, "--\ndebug_level = 0x%08X (* = enabled)\n", + seq_printf(m, "--\ndebug_level = 0x%08X (* = enabled)\n", acpi_dbg_level); break; - default: - p += sprintf(p, "Invalid debug option\n"); - break; } + return 0; +} - end: - size = (p - page); - if (size <= off + count) - *eof = 1; - *start = page + off; - size -= off; - if (size > count) - size = count; - if (size < 0) - size = 0; - - return size; +static int acpi_system_debug_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, acpi_system_debug_proc_show, PDE(inode)->data); } -static int -acpi_system_write_debug(struct file *file, +static ssize_t acpi_system_debug_proc_write(struct file *file, const char __user * buffer, - unsigned long count, void *data) + size_t count, loff_t *pos) { char debug_string[12] = { '\0' }; @@ -279,7 +262,7 @@ acpi_system_write_debug(struct file *fil debug_string[count] = '\0'; - switch ((unsigned long)data) { + switch ((unsigned long)PDE(file->f_path.dentry->d_inode)->data) { case 0: acpi_dbg_layer = simple_strtoul(debug_string, NULL, 0); break; @@ -292,6 +275,15 @@ acpi_system_write_debug(struct file *fil return count; } + +static const struct file_operations acpi_system_debug_proc_fops = { + .owner = THIS_MODULE, + .open = acpi_system_debug_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .write = acpi_system_debug_proc_write, +}; #endif int __init acpi_debug_init(void) @@ -303,24 +295,18 @@ int __init acpi_debug_init(void) /* 'debug_layer' [R/W] */ name = ACPI_SYSTEM_FILE_DEBUG_LAYER; - entry = - create_proc_read_entry(name, S_IFREG | S_IRUGO | S_IWUSR, - acpi_root_dir, acpi_system_read_debug, - (void *)0); - if (entry) - entry->write_proc = acpi_system_write_debug; - else + entry = proc_create_data(name, S_IFREG | S_IRUGO | S_IWUSR, + acpi_root_dir, &acpi_system_debug_proc_fops, + (void *)0); + if (!entry) goto Error; /* 'debug_level' [R/W] */ name = ACPI_SYSTEM_FILE_DEBUG_LEVEL; - entry = - create_proc_read_entry(name, S_IFREG | S_IRUGO | S_IWUSR, - acpi_root_dir, acpi_system_read_debug, - (void *)1); - if (entry) - entry->write_proc = acpi_system_write_debug; - else + entry = proc_create_data(name, S_IFREG | S_IRUGO | S_IWUSR, + acpi_root_dir, &acpi_system_debug_proc_fops, + (void *)1); + if (!entry) goto Error; Done: