From: Zhang Rui <rui.zhang@xxxxxxxxx>
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@xxxxxxxxx>
---
drivers/acpi/Kconfig | 2 +
drivers/acpi/debug.c | 62 ++++++++++++++++++++++++++++++++++++++++++++++-----
2 files changed, 59 insertions(+), 5 deletions(-)
Index: linux-2.6.20-rc4-mm1/drivers/acpi/debug.c
===================================================================
--- linux-2.6.20-rc4-mm1.orig/drivers/acpi/debug.c 2007-01-21 12:47:23.000000000 +0800
+++ linux-2.6.20-rc4-mm1/drivers/acpi/debug.c 2007-01-21 12:59:01.000000000 +0800
@@ -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_deb
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
Index: linux-2.6.20-rc4-mm1/drivers/acpi/Kconfig
===================================================================
--- linux-2.6.20-rc4-mm1.orig/drivers/acpi/Kconfig 2007-01-21 12:47:23.000000000 +0800
+++ linux-2.6.20-rc4-mm1/drivers/acpi/Kconfig 2007-01-21 12:58:31.000000000 +0800
@@ -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"
-
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