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authorBob Moore <robert.moore@intel.com>2007-02-02 17:48:20 +0100
committerLen Brown <len.brown@intel.com>2007-02-03 03:14:24 +0100
commit1ba753acb372c2955a4843302e92e49ce82e2fea (patch)
tree13dbe3af585f835c7d9cdf41fae505a7df4e8620 /drivers/acpi/executer/excreate.c
parentACPICA: Create tbfadt.c to hold all FADT-related functions (diff)
downloadlinux-1ba753acb372c2955a4843302e92e49ce82e2fea.tar.xz
linux-1ba753acb372c2955a4843302e92e49ce82e2fea.zip
ACPICA: Re-implement interpreters' "serialized mode"
Enhanced the implementation of the interpreters' serialized mode (boot with "acpi_serialize" to set acpi_glb_all_methods_serialized flag.) When this mode is specified, instead of creating a serialization semaphore per control method, the interpreter lock is simply no longer released before a blocking operation during control method execution. This effectively makes the AML Interpreter single-threaded. The overhead of a semaphore per-method is eliminated. Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/executer/excreate.c')
-rw-r--r--drivers/acpi/executer/excreate.c5
1 files changed, 1 insertions, 4 deletions
diff --git a/drivers/acpi/executer/excreate.c b/drivers/acpi/executer/excreate.c
index a4d29b2d086f..c665aa776f83 100644
--- a/drivers/acpi/executer/excreate.c
+++ b/drivers/acpi/executer/excreate.c
@@ -583,10 +583,7 @@ acpi_ex_create_method(u8 * aml_start,
* Get the sync_level. If method is serialized, a mutex will be
* created for this method when it is parsed.
*/
- if (acpi_gbl_all_methods_serialized) {
- obj_desc->method.sync_level = 0;
- obj_desc->method.method_flags |= AML_METHOD_SERIALIZED;
- } else if (method_flags & AML_METHOD_SERIALIZED) {
+ if (method_flags & AML_METHOD_SERIALIZED) {
/*
* ACPI 1.0: sync_level = 0
* ACPI 2.0: sync_level = sync_level in method declaration