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ACPICA: add preemption point after each opcode parse 

Reference: http://marc.info/?l=linux-acpi&m=122236382701062&w=2

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Tested-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Alexey Starikovskiy 2008-09-25 21:40:30 +04:00 committed by Len Brown
parent eec9354901
commit 8bd108d146
3 changed files with 13 additions and 0 deletions
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2
drivers/acpi/parser/psloop.c
View File

@ -719,6 +719,8 @@ acpi_ps_complete_op(struct acpi_walk_state *walk_state,
*op = NULL;
}
ACPI_PREEMPTION_POINT();
return_ACPI_STATUS(AE_OK);
}

5
include/acpi/acmacros.h
View File

@ -685,4 +685,9 @@ struct acpi_integer_overlay {
#endif /* ACPI_DBG_TRACK_ALLOCATIONS */
/* Preemption point */
#ifndef ACPI_PREEMPTION_POINT
#define ACPI_PREEMPTION_POINT() /* no preemption */
#endif
#endif /* ACMACROS_H */

6
include/acpi/platform/aclinux.h
View File

@ -53,6 +53,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/ctype.h>
#include <linux/sched.h>
#include <asm/system.h>
#include <asm/atomic.h>
#include <asm/div64.h>
@ -137,4 +138,9 @@ static inline void *acpi_os_acquire_object(acpi_cache_t * cache)
#define ACPI_ALLOCATE_ZEROED(a) acpi_os_allocate_zeroed(a)
#define ACPI_FREE(a) kfree(a)
/*
* We need to show where it is safe to preempt execution of ACPICA
*/
#define ACPI_PREEMPTION_POINT() cond_resched()
#endif /* __ACLINUX_H__ */