lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ACPICA: Delete recursive feature of ACPI Global Lock

Browse Source 
Completed a new design and implementation for
the ACPI Global Lock support. On the OS side, the global
lock is now treated as a standard AML mutex. Previously,
multiple OS threads could acquire the global lock
simultaneously, but this could cause the BIOS to be starved
by the lock in cases such as the Embedded Controller driver,
where there is a tight coupling between the OS and the BIOS.

Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bob Moore
2007-02-02 19:48:18 +03:00
committed by Len Brown
parent 8f9337c883
commit c81da66608
9 changed files with 133 additions and 199 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
include/acpi/acglobal.h
View File

@@ -197,6 +197,7 @@ ACPI_EXTERN struct acpi_mutex_info acpi_gbl_mutex_info[ACPI_NUM_MUTEX];
/*
* Global lock semaphore works in conjunction with the actual HW global lock
*/
ACPI_EXTERN acpi_mutex acpi_gbl_global_lock_mutex;
ACPI_EXTERN acpi_semaphore acpi_gbl_global_lock_semaphore;
/*
@@ -240,7 +241,6 @@ ACPI_EXTERN struct acpi_walk_state *acpi_gbl_breakpoint_walk;
/* Misc */
ACPI_EXTERN u32 acpi_gbl_global_lock_thread_count;
ACPI_EXTERN u32 acpi_gbl_original_mode;
ACPI_EXTERN u32 acpi_gbl_rsdp_original_location;
ACPI_EXTERN u32 acpi_gbl_ns_lookup_count;

6
include/acpi/acinterp.h
View File

@@ -277,12 +277,6 @@ acpi_status acpi_ex_system_do_suspend(acpi_integer time);
acpi_status acpi_ex_system_do_stall(u32 time);
acpi_status
acpi_ex_system_acquire_mutex(union acpi_operand_object *time,
union acpi_operand_object *obj_desc);
acpi_status acpi_ex_system_release_mutex(union acpi_operand_object *obj_desc);
acpi_status acpi_ex_system_signal_event(union acpi_operand_object *obj_desc);
acpi_status

1
include/acpi/aclocal.h
View File

@@ -51,7 +51,6 @@
#define ACPI_SERIALIZED 0xFF
typedef u32 acpi_mutex_handle;
#define ACPI_GLOBAL_LOCK (acpi_semaphore) (-1)
/* Total number of aml opcodes defined */