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ACPI: add ACPI debug attribute in sysfs

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Add ACPI debug attributes in sysfs.
/proc/acpi/debug_layer && debug_level are deprecated by
/sys/module/acpi/parameters/debug_layer && debug_level.

NOTE: The operations to them are quite the same.
E.g. if you want to enable ACPI_DB_INFO, ACPI_DB_WARN,
 ACPI_DB_ERROR and disable the others,
#echo 0x13 >/sys/module/acpi/parameters/debug_level is OK,
and a boot option "acpi.debug_level = 0x13" also works.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Zhang Rui 2007-01-29 11:02:38 +08:00 committed by Len Brown
parent b981c59189
commit 219c3c8e26
2 changed files with 59 additions and 5 deletions
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2
drivers/acpi/Kconfig
View File

@ -86,6 +86,8 @@ config ACPI_PROCFS
As the same functions are duplicated in sysfs interface As the same functions are duplicated in sysfs interface
and this proc interface will be removed some time later, and this proc interface will be removed some time later,
it's marked as deprecated. 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 config ACPI_AC
tristate "AC Adapter" tristate "AC Adapter"

62
drivers/acpi/debug.c
View File

@ -13,14 +13,11 @@
#define _COMPONENT ACPI_SYSTEM_COMPONENT #define _COMPONENT ACPI_SYSTEM_COMPONENT
ACPI_MODULE_NAME("debug") ACPI_MODULE_NAME("debug")
#define ACPI_SYSTEM_FILE_DEBUG_LAYER "debug_layer"
#define ACPI_SYSTEM_FILE_DEBUG_LEVEL "debug_level"
#ifdef MODULE_PARAM_PREFIX #ifdef MODULE_PARAM_PREFIX
#undef MODULE_PARAM_PREFIX #undef MODULE_PARAM_PREFIX
#endif #endif
#define MODULE_PARAM_PREFIX #define MODULE_PARAM_PREFIX "acpi."
module_param(acpi_dbg_layer, uint, 0400);
module_param(acpi_dbg_level, uint, 0400);
struct acpi_dlayer { struct acpi_dlayer {
const char *name; const char *name;
@ -86,6 +83,60 @@ static const struct acpi_dlevel acpi_debug_levels[] = {
ACPI_DEBUG_INIT(ACPI_LV_EVENTS), 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 static int
acpi_system_read_debug(char *page, acpi_system_read_debug(char *page,
char **start, off_t off, int count, int *eof, void *data) 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); subsys_initcall(acpi_debug_init);
#endif