[PATCH 10/11] x86: Remove unnecessary ifdefs from i387 code.

From: Brian Gerst
Date: Sat Aug 28 2010 - 12:05:39 EST


Remove ifdefs for code that the compiler can optimize away on 64-bit.

Signed-off-by: Brian Gerst <brgerst@xxxxxxxxx>
---
arch/x86/include/asm/i387.h | 12 ++++++------
arch/x86/kernel/i387.c | 4 ----
2 files changed, 6 insertions(+), 10 deletions(-)

diff --git a/arch/x86/include/asm/i387.h b/arch/x86/include/asm/i387.h
index 58cb6f0..3b4675d 100644
--- a/arch/x86/include/asm/i387.h
+++ b/arch/x86/include/asm/i387.h
@@ -55,6 +55,12 @@ extern int save_i387_xstate_ia32(void __user *buf);
extern int restore_i387_xstate_ia32(void __user *buf);
#endif

+#ifdef CONFIG_MATH_EMULATION
+extern void finit_soft_fpu(struct i387_soft_struct *soft);
+#else
+static inline void finit_soft_fpu(struct i387_soft_struct *soft) {}
+#endif
+
#define X87_FSW_ES (1 << 7) /* Exception Summary */

static __always_inline __pure bool use_xsaveopt(void)
@@ -149,12 +155,6 @@ static inline void fpu_fxsave(struct fpu *fpu)

#else /* CONFIG_X86_32 */

-#ifdef CONFIG_MATH_EMULATION
-extern void finit_soft_fpu(struct i387_soft_struct *soft);
-#else
-static inline void finit_soft_fpu(struct i387_soft_struct *soft) {}
-#endif
-
/* perform fxrstor iff the processor has extended states, otherwise frstor */
static inline int fxrstor_checking(struct i387_fxsave_struct *fx)
{
diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c
index b1a732d..e21c138 100644
--- a/arch/x86/kernel/i387.c
+++ b/arch/x86/kernel/i387.c
@@ -74,10 +74,8 @@ static void __cpuinit init_thread_xstate(void)

if (cpu_has_fxsr)
xstate_size = sizeof(struct i387_fxsave_struct);
-#ifdef CONFIG_X86_32
else
xstate_size = sizeof(struct i387_fsave_struct);
-#endif
}

/*
@@ -113,12 +111,10 @@ void __cpuinit fpu_init(void)

void fpu_finit(struct fpu *fpu)
{
-#ifdef CONFIG_X86_32
if (!HAVE_HWFP) {
finit_soft_fpu(&fpu->state->soft);
return;
}
-#endif

if (cpu_has_fxsr) {
struct i387_fxsave_struct *fx = &fpu->state->fxsave;
--
1.7.2.2

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/