linux_dsm_epyc7002/drivers/acpi/debugfs.c

/*
 * debugfs.c - ACPI debugfs interface to userspace.
 */

#include <linux/init.h>
#include <linux/debugfs.h>
#include <acpi/acpi_drivers.h>

#define _COMPONENT		ACPI_SYSTEM_COMPONENT
ACPI_MODULE_NAME("debugfs");

struct dentry *acpi_debugfs_dir;
EXPORT_SYMBOL_GPL(acpi_debugfs_dir);

void __init acpi_debugfs_init(void)
{
	acpi_debugfs_dir = debugfs_create_dir("acpi", NULL);
}
ACPI: introduce drivers/acpi/debugfs.c Introduce drivers/acpi/debugfs.c. Code for ACPI debugfs I/F, i.e. /sys/kernel/debug/acpi/custom_method, is moved to this file. And make ACPI debugfs always built in, even if CONFIG_ACPI_DEBUG is cleared. BTW:this adds about 400bytes code to ACPI, when CONFIG_ACPI_DEBUG is cleared. [uaccess.h build fix from Andrew Morton <akpm@linux-foundation.org>] Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com> 2010-07-15 09:46:15 +07:00			`/*`
			`* debugfs.c - ACPI debugfs interface to userspace.`
			`*/`

			`#include <linux/init.h>`
			`#include <linux/debugfs.h>`
			`#include <acpi/acpi_drivers.h>`

			`#define _COMPONENT ACPI_SYSTEM_COMPONENT`
			`ACPI_MODULE_NAME("debugfs");`

ACPI: Cleanup custom_method debug stuff - Move param aml_debug_output to other params into sysfs.c - Split acpi_debugfs_init to prepare custom_method to be an own .config option and driver. Signed-off-by: Thomas Renninger <trenn@suse.de> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: rui.zhang@intel.com Signed-off-by: Len Brown <len.brown@intel.com> 2011-05-26 17:26:23 +07:00			`struct dentry *acpi_debugfs_dir;`
ACPI: Split out custom_method functionality into an own driver With /sys/kernel/debug/acpi/custom_method root can write to arbitrary memory and increase his priveleges, even if these are restricted. -> Make this an own debug .config option and warn about the security issue in the config description. -> Still keep acpi/debugfs.c which now only creates an empty /sys/kernel/debug/acpi directory. There might be other users of it later. Signed-off-by: Thomas Renninger <trenn@suse.de> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: rui.zhang@intel.com Signed-off-by: Len Brown <len.brown@intel.com> 2011-05-26 17:26:24 +07:00			`EXPORT_SYMBOL_GPL(acpi_debugfs_dir);`
ACPI: Cleanup custom_method debug stuff - Move param aml_debug_output to other params into sysfs.c - Split acpi_debugfs_init to prepare custom_method to be an own .config option and driver. Signed-off-by: Thomas Renninger <trenn@suse.de> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: rui.zhang@intel.com Signed-off-by: Len Brown <len.brown@intel.com> 2011-05-26 17:26:23 +07:00
			`void __init acpi_debugfs_init(void)`
			`{`
			`acpi_debugfs_dir = debugfs_create_dir("acpi", NULL);`
ACPI: introduce drivers/acpi/debugfs.c Introduce drivers/acpi/debugfs.c. Code for ACPI debugfs I/F, i.e. /sys/kernel/debug/acpi/custom_method, is moved to this file. And make ACPI debugfs always built in, even if CONFIG_ACPI_DEBUG is cleared. BTW:this adds about 400bytes code to ACPI, when CONFIG_ACPI_DEBUG is cleared. [uaccess.h build fix from Andrew Morton <akpm@linux-foundation.org>] Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com> 2010-07-15 09:46:15 +07:00			`}`