From: Alexey Starikovskiy <astarikovskiy@xxxxxxx> Reference: http://marc.info/?l=linux-acpi&m=122236382701062&w=2 Signed-off-by: Alexey Starikovskiy <astarikovskiy@xxxxxxx> Tested-by: Sitsofe Wheeler <sitsofe@xxxxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> --- drivers/acpi/parser/psloop.c | 2 ++ include/acpi/acmacros.h | 5 +++++ include/acpi/platform/aclinux.h | 6 ++++++ 3 files changed, 13 insertions(+), 0 deletions(-) diff --git a/drivers/acpi/parser/psloop.c b/drivers/acpi/parser/psloop.c index c06238e..4647039 100644 --- a/drivers/acpi/parser/psloop.c +++ b/drivers/acpi/parser/psloop.c @@ -719,6 +719,8 @@ acpi_ps_complete_op(struct acpi_walk_state *walk_state, *op = NULL; } + ACPI_PREEMPTION_POINT(); + return_ACPI_STATUS(AE_OK); } diff --git a/include/acpi/acmacros.h b/include/acpi/acmacros.h index 2106f91..a1e3240 100644 --- a/include/acpi/acmacros.h +++ b/include/acpi/acmacros.h @@ -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 */ diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h index 9af4645..029c8c0 100644 --- a/include/acpi/platform/aclinux.h +++ b/include/acpi/platform/aclinux.h @@ -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__ */ -- 1.5.5.1 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
