ACPICA: Remove global option to serialize all control methods.

According to the reports, the "acpi_serialize" mechanism is broken as:

 A. The parallel method calls can still happen when the interpreter lock is
    released under the following conditions:
    1. External callbacks are invoked, for example, by the region handlers,
       the exception handlers, etc.;
    2. Module level execution is performed when Load/LoadTable opcodes are
       executed, and
    3. The _REG control methods are invoked to complete the region
       registrations.
 B. For the following situations, the interpreter lock need to be released
    even for a serialized method while currently, the lock-releasing
    operation is marked as a no-op by
    acpi_ex_relinquish/reacquire_interpreter() when this mechanism is
    enabled:
    1. Wait opcode is executed,
    2. Acquire opcode is executed, and
    3. Sleep opcode is executed.

This patch removes this mechanism and the internal
acpi_ex_relinquish/reacquire_interpreter() APIs.  Lv Zheng.

References: https://bugzilla.kernel.org/show_bug.cgi?id=52191
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Lv Zheng
2014-03-24 14:48:45 +08:00
committed by Rafael J. Wysocki
parent 6e59608483
commit e2b8ddcc6b
7 changed files with 16 additions and 103 deletions

View File

@@ -458,10 +458,6 @@ void acpi_ex_enter_interpreter(void);
void acpi_ex_exit_interpreter(void);
void acpi_ex_reacquire_interpreter(void);
void acpi_ex_relinquish_interpreter(void);
u8 acpi_ex_truncate_for32bit_table(union acpi_operand_object *obj_desc);
void acpi_ex_acquire_global_lock(u32 rule);