acpi: switch /proc/acpi/{debug_layer,debug_level} to seq_file (7d7decb2) · Commits · e / devices / android_kernel_oneplus_sm8150

drivers/acpi/debug.c

+34 −48

Original line number	Diff line number	Diff line
		@@ -3,6 +3,7 @@
		*/

		#include <linux/proc_fs.h>
		#include <linux/seq_file.h>
		#include <linux/init.h>
		#include <linux/module.h>
		#include <linux/kernel.h>
		@@ -201,72 +202,54 @@ module_param_call(trace_state, param_set_trace_state, param_get_trace_state,
		#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 *file,

		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 *file,

		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,
		entry = proc_create_data(name, S_IFREG \| S_IRUGO \| S_IWUSR,
		acpi_root_dir, &acpi_system_debug_proc_fops,
		(void *)0);
		if (entry)
		entry->write_proc = acpi_system_write_debug;
		else
		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,
		entry = proc_create_data(name, S_IFREG \| S_IRUGO \| S_IWUSR,
		acpi_root_dir, &acpi_system_debug_proc_fops,
		(void *)1);
		if (entry)
		entry->write_proc = acpi_system_write_debug;
		else
		if (!entry)
		goto Error;

		Done: