ACPI: add ACPI debug attribute in sysfs (219c3c8e) · Commits · 戴 / test

drivers/acpi/Kconfig

+2 −0

Original line number	Diff line number	Diff line
		@@ -86,6 +86,8 @@ config ACPI_PROCFS
		As the same functions are duplicated in sysfs interface
		and this proc interface will be removed some time later,
		it's marked as deprecated.
		( /proc/acpi/debug_layer && debug_level are deprecated by
		/sys/module/acpi/parameters/debug_layer && debug_level. )

		config ACPI_AC
		tristate "AC Adapter"

drivers/acpi/debug.c

+57 −5

Original line number	Diff line number	Diff line
		@@ -13,14 +13,11 @@

		#define _COMPONENT ACPI_SYSTEM_COMPONENT
		ACPI_MODULE_NAME("debug")
		#define ACPI_SYSTEM_FILE_DEBUG_LAYER "debug_layer"
		#define ACPI_SYSTEM_FILE_DEBUG_LEVEL "debug_level"

		#ifdef MODULE_PARAM_PREFIX
		#undef MODULE_PARAM_PREFIX
		#endif
		#define MODULE_PARAM_PREFIX
		module_param(acpi_dbg_layer, uint, 0400);
		module_param(acpi_dbg_level, uint, 0400);
		#define MODULE_PARAM_PREFIX "acpi."

		struct acpi_dlayer {
		const char *name;
		@@ -86,6 +83,60 @@ static const struct acpi_dlevel acpi_debug_levels[] = {
		ACPI_DEBUG_INIT(ACPI_LV_EVENTS),
		};

		/* --------------------------------------------------------------------------
		FS Interface (/sys)
		-------------------------------------------------------------------------- */
		static int param_get_debug_layer(char buffer, struct kernel_param kp) {
		int result = 0;
		int i;

		result = sprintf(buffer, "%-25s\tHex SET\n", "Description");

		for(i = 0; i <ARRAY_SIZE(acpi_debug_layers); i++) {
		result += sprintf(buffer+result, "%-25s\t0x%08lX [%c]\n",
		acpi_debug_layers[i].name,
		acpi_debug_layers[i].value,
		(acpi_dbg_layer & acpi_debug_layers[i].value) ? '*' : ' ');
		}
		result += sprintf(buffer+result, "%-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 ? ' ' : '-');
		result += sprintf(buffer+result, "--\ndebug_layer = 0x%08X ( * = enabled)\n", acpi_dbg_layer);

		return result;
		}

		static int param_get_debug_level(char buffer, struct kernel_param kp) {
		int result = 0;
		int i;

		result = sprintf(buffer, "%-25s\tHex SET\n", "Description");

		for (i = 0; i < ARRAY_SIZE(acpi_debug_levels); i++) {
		result += sprintf(buffer+result, "%-25s\t0x%08lX [%c]\n",
		acpi_debug_levels[i].name,
		acpi_debug_levels[i].value,
		(acpi_dbg_level & acpi_debug_levels[i].
		value) ? '*' : ' ');
		}
		result += sprintf(buffer+result, "--\ndebug_level = 0x%08X (* = enabled)\n",
		acpi_dbg_level);

		return result;
		}

		module_param_call(debug_layer, param_set_uint, param_get_debug_layer, &acpi_dbg_layer, 0644);
		module_param_call(debug_level, param_set_uint, param_get_debug_level, &acpi_dbg_level, 0644);

		/* --------------------------------------------------------------------------
		FS Interface (/proc)
		-------------------------------------------------------------------------- */
		#ifdef CONFIG_ACPI_PROCFS
		#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)
		@@ -221,3 +272,4 @@ static int __init acpi_debug_init(void)
		}

		subsys_initcall(acpi_debug_init);
		#endif

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