diff options
| author | Bob Moore <robert.moore@intel.com> | 2014-03-24 14:49:00 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-03-26 16:25:59 +0100 |
| commit | 22b5afce6a0f29f995b0cce83a5033892dd306d8 (patch) | |
| tree | 5733ad0071177f398108a8932b7d7108bd74c4ca /drivers/acpi/acpica/acdispat.h | |
| parent | e2b8ddcc6b3fbb860e15c5d52455735e128326aa (diff) | |
ACPICA: Add auto-serialization support for ill-behaved control methods.
This change adds support to automatically mark a control method as
"serialized" if the method creates any named objects. This will
positively prevent the method from being entered by more than one
thread and thus preventing a possible abort when an attempt is
made to create an object twice.
Implemented by parsing all non-serialize control methods at table
load time.
This feature is disabled by default and this patch also adds a new
Linux kernel parameter "acpi_auto_serialize" to allow this feature
to be turned on for a specific boot.
References: https://bugzilla.kernel.org/show_bug.cgi?id=52191
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/acpica/acdispat.h')
| -rw-r--r-- | drivers/acpi/acpica/acdispat.h | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/acpi/acpica/acdispat.h b/drivers/acpi/acpica/acdispat.h index 5b472c43c31..d3e2cc395d7 100644 --- a/drivers/acpi/acpica/acdispat.h +++ b/drivers/acpi/acpica/acdispat.h @@ -139,20 +139,21 @@ acpi_ds_init_field_objects(union acpi_parse_object *op, struct acpi_walk_state *walk_state); /* - * dsload - Parser/Interpreter interface, pass 1 namespace load callbacks + * dsload - Parser/Interpreter interface */ acpi_status acpi_ds_init_callbacks(struct acpi_walk_state *walk_state, u32 pass_number); +/* dsload - pass 1 namespace load callbacks */ + acpi_status acpi_ds_load1_begin_op(struct acpi_walk_state *walk_state, union acpi_parse_object **out_op); acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state); -/* - * dsload - Parser/Interpreter interface, pass 2 namespace load callbacks - */ +/* dsload - pass 2 namespace load callbacks */ + acpi_status acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state, union acpi_parse_object **out_op); @@ -200,7 +201,9 @@ void acpi_ds_method_data_init(struct acpi_walk_state *walk_state); /* * dsmethod - Parser/Interpreter interface - control method parsing */ -acpi_status acpi_ds_parse_method(struct acpi_namespace_node *node); +acpi_status +acpi_ds_auto_serialize_method(struct acpi_namespace_node *node, + union acpi_operand_object *obj_desc); acpi_status acpi_ds_call_control_method(struct acpi_thread_state *thread, |