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ACPICA: provide abstraction for raw_spinlock_t

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Provide a new lock type acpi_raw_spinlock which is implemented as
raw_spinlock_t on Linux. This type should be used in code which covers
small areas of code and disables interrupts only for short time even on
a realtime OS.
There is a fallback to spinlock_t if an OS does not provide an
implementation for acpi_raw_spinlock.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Sebastian Andrzej Siewior
2018-04-25 16:28:26 +02:00
committed by Rafael J. Wysocki
parent 75bc37fefc
commit c3052594c8
4 changed files with 60 additions and 0 deletions
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5
include/acpi/platform/aclinux.h
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@@ -102,6 +102,7 @@
#define acpi_cache_t struct kmem_cache
#define acpi_spinlock spinlock_t *
#define acpi_raw_spinlock raw_spinlock_t *
#define acpi_cpu_flags unsigned long
/* Use native linux version of acpi_os_allocate_zeroed */
@@ -119,6 +120,10 @@
#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_acquire_object
#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_thread_id
#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_lock
#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_raw_lock
#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_delete_raw_lock
#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_acquire_raw_lock
#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_release_raw_lock
/*
* OSL interfaces used by debugger/disassembler