diff options
-rw-r--r-- | Documentation/kernel-parameters.txt | 32 |
1 files changed, 27 insertions, 5 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 12533a958c51..e3394eb42cb7 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt | |||
@@ -181,19 +181,41 @@ and is between 256 and 4096 characters. It is defined in the file | |||
181 | that require a timer override, but don't have | 181 | that require a timer override, but don't have |
182 | HPET | 182 | HPET |
183 | 183 | ||
184 | acpi_dbg_layer= [HW,ACPI] | 184 | acpi.debug_layer= [HW,ACPI] |
185 | Format: <int> | 185 | Format: <int> |
186 | Each bit of the <int> indicates an ACPI debug layer, | 186 | Each bit of the <int> indicates an ACPI debug layer, |
187 | 1: enable, 0: disable. It is useful for boot time | 187 | 1: enable, 0: disable. It is useful for boot time |
188 | debugging. After system has booted up, it can be set | 188 | debugging. After system has booted up, it can be set |
189 | via /proc/acpi/debug_layer. | 189 | via /sys/module/acpi/parameters/debug_layer. |
190 | 190 | CONFIG_ACPI_DEBUG must be enabled for this to produce any output. | |
191 | acpi_dbg_level= [HW,ACPI] | 191 | Available bits (add the numbers together) to enable debug output |
192 | for specific parts of the ACPI subsystem: | ||
193 | 0x01 utilities 0x02 hardware 0x04 events 0x08 tables | ||
194 | 0x10 namespace 0x20 parser 0x40 dispatcher | ||
195 | 0x80 executer 0x100 resources 0x200 acpica debugger | ||
196 | 0x400 os services 0x800 acpica disassembler. | ||
197 | The number can be in decimal or prefixed with 0x in hex. | ||
198 | Warning: Many of these options can produce a lot of | ||
199 | output and make your system unusable. Be very careful. | ||
200 | |||
201 | acpi.debug_level= [HW,ACPI] | ||
192 | Format: <int> | 202 | Format: <int> |
193 | Each bit of the <int> indicates an ACPI debug level, | 203 | Each bit of the <int> indicates an ACPI debug level, |
194 | 1: enable, 0: disable. It is useful for boot time | 204 | 1: enable, 0: disable. It is useful for boot time |
195 | debugging. After system has booted up, it can be set | 205 | debugging. After system has booted up, it can be set |
196 | via /proc/acpi/debug_level. | 206 | via /sys/module/acpi/parameters/debug_level. |
207 | CONFIG_ACPI_DEBUG must be enabled for this to produce any output. | ||
208 | Available bits (add the numbers together) to enable different | ||
209 | debug output levels of the ACPI subsystem: | ||
210 | 0x01 error 0x02 warn 0x04 init 0x08 debug object | ||
211 | 0x10 info 0x20 init names 0x40 parse 0x80 load | ||
212 | 0x100 dispatch 0x200 execute 0x400 names 0x800 operation region | ||
213 | 0x1000 bfield 0x2000 tables 0x4000 values 0x8000 objects | ||
214 | 0x10000 resources 0x20000 user requests 0x40000 package. | ||
215 | The number can be in decimal or prefixed with 0x in hex. | ||
216 | Warning: Many of these options can produce a lot of | ||
217 | output and make your system unusable. Be very careful. | ||
218 | |||
197 | 219 | ||
198 | acpi_fake_ecdt [HW,ACPI] Workaround failure due to BIOS lacking ECDT | 220 | acpi_fake_ecdt [HW,ACPI] Workaround failure due to BIOS lacking ECDT |
199 | 221 | ||