X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-mips%2Ffpu.h;h=e59d4c039661278a469df9caa5e2a74f6cee1a50;hb=13c48c490208d9e70d8d66d56f96c5054db69af7;hp=4e12d1f9534f9d99d43123c0cb517887946b5443;hpb=604119a4b22b95e30dea6af3b3bfdc2f07fa4afd;p=linux-2.6

diff --git a/include/asm-mips/fpu.h b/include/asm-mips/fpu.h
index 4e12d1f953..e59d4c0396 100644
--- a/include/asm-mips/fpu.h
+++ b/include/asm-mips/fpu.h
@@ -12,11 +12,12 @@
 
 #include <linux/sched.h>
 #include <linux/thread_info.h>
+#include <linux/bitops.h>
 
 #include <asm/mipsregs.h>
 #include <asm/cpu.h>
 #include <asm/cpu-features.h>
-#include <asm/bitops.h>
+#include <asm/hazards.h>
 #include <asm/processor.h>
 #include <asm/current.h>
 
@@ -38,38 +39,18 @@ extern void _init_fpu(void);
 extern void _save_fp(struct task_struct *);
 extern void _restore_fp(struct task_struct *);
 
-#if defined(CONFIG_CPU_SB1)
-#define __enable_fpu_hazard()						\
-do {									\
-	asm(".set	push		\n\t"				\
-	    ".set	mips64		\n\t"				\
-	    ".set	noreorder	\n\t"				\
-	    "ssnop			\n\t"				\
-	    "bnezl	$0, .+4		\n\t"				\
-	    "ssnop			\n\t"				\
-	    ".set pop");						\
-} while (0)
-#else
-#define __enable_fpu_hazard()						\
-do {									\
-	asm("nop;nop;nop;nop");		/* max. hazard */		\
-} while (0)
-#endif
-
 #define __enable_fpu()							\
 do {									\
         set_c0_status(ST0_CU1);						\
-        __enable_fpu_hazard();						\
+        enable_fpu_hazard();						\
 } while (0)
 
 #define __disable_fpu()							\
 do {									\
 	clear_c0_status(ST0_CU1);					\
-	/* We don't care about the c0 hazard here  */			\
+        disable_fpu_hazard();						\
 } while (0)
 
-#define __fpu_enabled()	(read_c0_status() & ST0_CU1)
-
 #define enable_fpu()							\
 do {									\
 	if (cpu_has_fpu)						\
@@ -102,14 +83,19 @@ static inline void __own_fpu(void)
 	set_thread_flag(TIF_USEDFPU);
 }
 
-static inline void own_fpu(int restore)
+static inline void own_fpu_inatomic(int restore)
 {
-	preempt_disable();
 	if (cpu_has_fpu && !__is_fpu_owner()) {
 		__own_fpu();
 		if (restore)
 			_restore_fp(current);
 	}
+}
+
+static inline void own_fpu(int restore)
+{
+	preempt_disable();
+	own_fpu_inatomic(restore);
 	preempt_enable();
 }
 
@@ -162,18 +148,4 @@ static inline fpureg_t *get_fpu_regs(struct task_struct *tsk)
 	return tsk->thread.fpu.fpr;
 }
 
-static inline void enable_fp_in_kernel(void)
-{
-	set_thread_flag(TIF_ALLOW_FP_IN_KERNEL);
-	/* make sure CU1 and FPU ownership are consistent */
-	if (!__is_fpu_owner() && __fpu_enabled())
-		__disable_fpu();
-}
-
-static inline void disable_fp_in_kernel(void)
-{
-	BUG_ON(!__is_fpu_owner() && __fpu_enabled());
-	clear_thread_flag(TIF_ALLOW_FP_IN_KERNEL);
-}
-
 #endif /* _ASM_FPU_H */