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| author | Bob Moore <robert.moore@intel.com> | 2007-02-02 19:48:20 +0300 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2007-02-02 21:14:24 -0500 |
| commit | 1ba753acb372c2955a4843302e92e49ce82e2fea (patch) | |
| tree | 13dbe3af585f835c7d9cdf41fae505a7df4e8620 /drivers/acpi/executer/exsystem.c | |
| parent | 95befdb398e0112ede80529f6770644ecfa5a82e (diff) | |
| download | blackbird-op-linux-1ba753acb372c2955a4843302e92e49ce82e2fea.tar.gz blackbird-op-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/exsystem.c')
| -rw-r--r-- | drivers/acpi/executer/exsystem.c | 30 |
1 files changed, 7 insertions, 23 deletions
diff --git a/drivers/acpi/executer/exsystem.c b/drivers/acpi/executer/exsystem.c index 3b9736a3e1b7..7e5aeb17cdc6 100644 --- a/drivers/acpi/executer/exsystem.c +++ b/drivers/acpi/executer/exsystem.c @@ -66,7 +66,6 @@ ACPI_MODULE_NAME("exsystem") acpi_status acpi_ex_system_wait_semaphore(acpi_semaphore semaphore, u16 timeout) { acpi_status status; - acpi_status status2; ACPI_FUNCTION_TRACE(ex_system_wait_semaphore); @@ -79,7 +78,7 @@ acpi_status acpi_ex_system_wait_semaphore(acpi_semaphore semaphore, u16 timeout) /* We must wait, so unlock the interpreter */ - acpi_ex_exit_interpreter(); + acpi_ex_relinquish_interpreter(); status = acpi_os_wait_semaphore(semaphore, 1, timeout); @@ -89,13 +88,7 @@ acpi_status acpi_ex_system_wait_semaphore(acpi_semaphore semaphore, u16 timeout) /* Reacquire the interpreter */ - status2 = acpi_ex_enter_interpreter(); - if (ACPI_FAILURE(status2)) { - - /* Report fatal error, could not acquire interpreter */ - - return_ACPI_STATUS(status2); - } + acpi_ex_reacquire_interpreter(); } return_ACPI_STATUS(status); @@ -119,7 +112,6 @@ acpi_status acpi_ex_system_wait_semaphore(acpi_semaphore semaphore, u16 timeout) acpi_status acpi_ex_system_wait_mutex(acpi_mutex mutex, u16 timeout) { acpi_status status; - acpi_status status2; ACPI_FUNCTION_TRACE(ex_system_wait_mutex); @@ -132,7 +124,7 @@ acpi_status acpi_ex_system_wait_mutex(acpi_mutex mutex, u16 timeout) /* We must wait, so unlock the interpreter */ - acpi_ex_exit_interpreter(); + acpi_ex_relinquish_interpreter(); status = acpi_os_acquire_mutex(mutex, timeout); @@ -142,13 +134,7 @@ acpi_status acpi_ex_system_wait_mutex(acpi_mutex mutex, u16 timeout) /* Reacquire the interpreter */ - status2 = acpi_ex_enter_interpreter(); - if (ACPI_FAILURE(status2)) { - - /* Report fatal error, could not acquire interpreter */ - - return_ACPI_STATUS(status2); - } + acpi_ex_reacquire_interpreter(); } return_ACPI_STATUS(status); @@ -209,20 +195,18 @@ acpi_status acpi_ex_system_do_stall(u32 how_long) acpi_status acpi_ex_system_do_suspend(acpi_integer how_long) { - acpi_status status; - ACPI_FUNCTION_ENTRY(); /* Since this thread will sleep, we must release the interpreter */ - acpi_ex_exit_interpreter(); + acpi_ex_relinquish_interpreter(); acpi_os_sleep(how_long); /* And now we must get the interpreter again */ - status = acpi_ex_enter_interpreter(); - return (status); + acpi_ex_reacquire_interpreter(); + return (AE_OK); } /******************************************************************************* |
