Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
This commit is contained in:
Linus Torvalds
233
drivers/acpi/debug.c
Normal file
233
drivers/acpi/debug.c
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@@ -0,0 +1,233 @@
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/*
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* debug.c - ACPI debug interface to userspace.
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*/
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#include <linux/proc_fs.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/moduleparam.h>
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#include <asm/uaccess.h>
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#include <acpi/acpi_drivers.h>
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#include <acpi/acglobal.h>
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#define _COMPONENT ACPI_SYSTEM_COMPONENT
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ACPI_MODULE_NAME ("debug")
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#define ACPI_SYSTEM_FILE_DEBUG_LAYER "debug_layer"
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#define ACPI_SYSTEM_FILE_DEBUG_LEVEL "debug_level"
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#ifdef MODULE_PARAM_PREFIX
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#undef MODULE_PARAM_PREFIX
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#endif
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#define MODULE_PARAM_PREFIX
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module_param(acpi_dbg_layer, uint, 0400);
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module_param(acpi_dbg_level, uint, 0400);
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struct acpi_dlayer {
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const char *name;
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unsigned long value;
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};
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struct acpi_dlevel {
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const char *name;
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unsigned long value;
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};
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#define ACPI_DEBUG_INIT(v) { .name = #v, .value = v }
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static const struct acpi_dlayer acpi_debug_layers[] =
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{
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ACPI_DEBUG_INIT(ACPI_UTILITIES),
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ACPI_DEBUG_INIT(ACPI_HARDWARE),
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ACPI_DEBUG_INIT(ACPI_EVENTS),
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ACPI_DEBUG_INIT(ACPI_TABLES),
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ACPI_DEBUG_INIT(ACPI_NAMESPACE),
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ACPI_DEBUG_INIT(ACPI_PARSER),
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ACPI_DEBUG_INIT(ACPI_DISPATCHER),
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ACPI_DEBUG_INIT(ACPI_EXECUTER),
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ACPI_DEBUG_INIT(ACPI_RESOURCES),
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ACPI_DEBUG_INIT(ACPI_CA_DEBUGGER),
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ACPI_DEBUG_INIT(ACPI_OS_SERVICES),
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ACPI_DEBUG_INIT(ACPI_CA_DISASSEMBLER),
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ACPI_DEBUG_INIT(ACPI_COMPILER),
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ACPI_DEBUG_INIT(ACPI_TOOLS),
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};
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static const struct acpi_dlevel acpi_debug_levels[] =
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{
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ACPI_DEBUG_INIT(ACPI_LV_ERROR),
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ACPI_DEBUG_INIT(ACPI_LV_WARN),
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ACPI_DEBUG_INIT(ACPI_LV_INIT),
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ACPI_DEBUG_INIT(ACPI_LV_DEBUG_OBJECT),
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ACPI_DEBUG_INIT(ACPI_LV_INFO),
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ACPI_DEBUG_INIT(ACPI_LV_INIT_NAMES),
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ACPI_DEBUG_INIT(ACPI_LV_PARSE),
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ACPI_DEBUG_INIT(ACPI_LV_LOAD),
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ACPI_DEBUG_INIT(ACPI_LV_DISPATCH),
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ACPI_DEBUG_INIT(ACPI_LV_EXEC),
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ACPI_DEBUG_INIT(ACPI_LV_NAMES),
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ACPI_DEBUG_INIT(ACPI_LV_OPREGION),
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ACPI_DEBUG_INIT(ACPI_LV_BFIELD),
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ACPI_DEBUG_INIT(ACPI_LV_TABLES),
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ACPI_DEBUG_INIT(ACPI_LV_VALUES),
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ACPI_DEBUG_INIT(ACPI_LV_OBJECTS),
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ACPI_DEBUG_INIT(ACPI_LV_RESOURCES),
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ACPI_DEBUG_INIT(ACPI_LV_USER_REQUESTS),
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ACPI_DEBUG_INIT(ACPI_LV_PACKAGE),
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ACPI_DEBUG_INIT(ACPI_LV_ALLOCATIONS),
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ACPI_DEBUG_INIT(ACPI_LV_FUNCTIONS),
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ACPI_DEBUG_INIT(ACPI_LV_OPTIMIZATIONS),
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ACPI_DEBUG_INIT(ACPI_LV_MUTEX),
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ACPI_DEBUG_INIT(ACPI_LV_THREADS),
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ACPI_DEBUG_INIT(ACPI_LV_IO),
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ACPI_DEBUG_INIT(ACPI_LV_INTERRUPTS),
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ACPI_DEBUG_INIT(ACPI_LV_AML_DISASSEMBLE),
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ACPI_DEBUG_INIT(ACPI_LV_VERBOSE_INFO),
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ACPI_DEBUG_INIT(ACPI_LV_FULL_TABLES),
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ACPI_DEBUG_INIT(ACPI_LV_EVENTS),
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};
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static int
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acpi_system_read_debug (
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char *page,
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char **start,
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off_t off,
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int count,
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int *eof,
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void *data)
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{
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char *p = page;
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int size = 0;
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unsigned int i;
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if (off != 0)
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goto end;
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p += sprintf(p, "%-25s\tHex SET\n", "Description");
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switch ((unsigned long) data) {
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case 0:
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for (i = 0; i < ARRAY_SIZE(acpi_debug_layers); i++) {
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p += sprintf(p, "%-25s\t0x%08lX [%c]\n",
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acpi_debug_layers[i].name,
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acpi_debug_layers[i].value,
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(acpi_dbg_layer & acpi_debug_layers[i].value) ?
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'*' : ' ');
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}
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p += sprintf(p, "%-25s\t0x%08X [%c]\n", "ACPI_ALL_DRIVERS",
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ACPI_ALL_DRIVERS,
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(acpi_dbg_layer & ACPI_ALL_DRIVERS) == ACPI_ALL_DRIVERS?
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'*' : (acpi_dbg_layer & ACPI_ALL_DRIVERS) == 0 ?
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' ' : '-');
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p += sprintf(p,
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"--\ndebug_layer = 0x%08X (* = enabled, - = partial)\n",
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acpi_dbg_layer);
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break;
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case 1:
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for (i = 0; i < ARRAY_SIZE(acpi_debug_levels); i++) {
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p += sprintf(p, "%-25s\t0x%08lX [%c]\n",
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acpi_debug_levels[i].name,
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acpi_debug_levels[i].value,
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(acpi_dbg_level & acpi_debug_levels[i].value) ?
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'*' : ' ');
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}
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p += sprintf(p, "--\ndebug_level = 0x%08X (* = enabled)\n",
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acpi_dbg_level);
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break;
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default:
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p += sprintf(p, "Invalid debug option\n");
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break;
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}
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end:
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size = (p - page);
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if (size <= off+count) *eof = 1;
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*start = page + off;
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size -= off;
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if (size>count) size = count;
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if (size<0) size = 0;
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return size;
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}
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static int
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acpi_system_write_debug (
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struct file *file,
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const char __user *buffer,
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unsigned long count,
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void *data)
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{
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char debug_string[12] = {'\0'};
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ACPI_FUNCTION_TRACE("acpi_system_write_debug");
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if (count > sizeof(debug_string) - 1)
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return_VALUE(-EINVAL);
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if (copy_from_user(debug_string, buffer, count))
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return_VALUE(-EFAULT);
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debug_string[count] = '\0';
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switch ((unsigned long) data) {
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case 0:
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acpi_dbg_layer = simple_strtoul(debug_string, NULL, 0);
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break;
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case 1:
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acpi_dbg_level = simple_strtoul(debug_string, NULL, 0);
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break;
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default:
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return_VALUE(-EINVAL);
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}
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return_VALUE(count);
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}
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static int __init acpi_debug_init(void)
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{
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struct proc_dir_entry *entry;
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int error = 0;
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char * name;
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ACPI_FUNCTION_TRACE("acpi_debug_init");
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if (acpi_disabled)
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return_VALUE(0);
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/* 'debug_layer' [R/W] */
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name = ACPI_SYSTEM_FILE_DEBUG_LAYER;
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entry = create_proc_read_entry(name, S_IFREG|S_IRUGO|S_IWUSR, acpi_root_dir,
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acpi_system_read_debug,(void *)0);
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if (entry)
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entry->write_proc = acpi_system_write_debug;
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else
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goto Error;
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/* 'debug_level' [R/W] */
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name = ACPI_SYSTEM_FILE_DEBUG_LEVEL;
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entry = create_proc_read_entry(name, S_IFREG|S_IRUGO|S_IWUSR, acpi_root_dir,
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acpi_system_read_debug, (void *)1);
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if (entry)
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entry->write_proc = acpi_system_write_debug;
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else
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goto Error;
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Done:
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return_VALUE(error);
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Error:
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ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
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"Unable to create '%s' proc fs entry\n", name));
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remove_proc_entry(ACPI_SYSTEM_FILE_DEBUG_LEVEL, acpi_root_dir);
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remove_proc_entry(ACPI_SYSTEM_FILE_DEBUG_LAYER, acpi_root_dir);
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error = -EFAULT;
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goto Done;
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}
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subsys_initcall(acpi_debug_init);
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