Revision 10f02d1c59e55f529140dda3a92f0099d748451c authored by Samuel Thibault on 21 May 2005, 15:50:15 UTC, committed by Linus Torvalds on 21 May 2005, 17:46:48 UTC
In _spin_unlock_bh(lock): do { \ _raw_spin_unlock(lock); \ preempt_enable(); \ local_bh_enable(); \ __release(lock); \ } while (0) there is no reason for using preempt_enable() instead of a simple preempt_enable_no_resched() Since we know bottom halves are disabled, preempt_schedule() will always return at once (preempt_count!=0), and hence preempt_check_resched() is useless here... This fixes it by using "preempt_enable_no_resched()" instead of the "preempt_enable()", and thus avoids the useless preempt_check_resched() just before re-enabling bottom halves. Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1 parent 9636273
agp_backend.h
#ifndef _ALPHA_AGP_BACKEND_H
#define _ALPHA_AGP_BACKEND_H 1
typedef union _alpha_agp_mode {
struct {
u32 rate : 3;
u32 reserved0 : 1;
u32 fw : 1;
u32 fourgb : 1;
u32 reserved1 : 2;
u32 enable : 1;
u32 sba : 1;
u32 reserved2 : 14;
u32 rq : 8;
} bits;
u32 lw;
} alpha_agp_mode;
typedef struct _alpha_agp_info {
struct pci_controller *hose;
struct {
dma_addr_t bus_base;
unsigned long size;
void *sysdata;
} aperture;
alpha_agp_mode capability;
alpha_agp_mode mode;
void *private;
struct alpha_agp_ops *ops;
} alpha_agp_info;
struct alpha_agp_ops {
int (*setup)(alpha_agp_info *);
void (*cleanup)(alpha_agp_info *);
int (*configure)(alpha_agp_info *);
int (*bind)(alpha_agp_info *, off_t, struct agp_memory *);
int (*unbind)(alpha_agp_info *, off_t, struct agp_memory *);
unsigned long (*translate)(alpha_agp_info *, dma_addr_t);
};
#endif /* _ALPHA_AGP_BACKEND_H */
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