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powerpc/process: Remove useless #ifdef CONFIG_PPC_FPU

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Add a stub for __giveup_fpu() when CONFIG_PPC_FPU is
not selected, as done for CONFIG_SPE and CONFIG_ALTIVEC.

This allows to remove some #ifdef CONFIG_PPC_FPU.

Also change one to IS_ENABLED().

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/69c8b7954ceeccc6b849e52e1fa41b3a0f10f6c1.1597643221.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy
2020-08-17 05:47:58 +00:00
committed by Michael Ellerman
parent 532ed1900d
commit c83c192a6f
1 changed files with 4 additions and 5 deletions
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9
arch/powerpc/kernel/process.c
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@@ -229,6 +229,8 @@ void enable_kernel_fp(void)
} }
} }
EXPORT_SYMBOL(enable_kernel_fp); EXPORT_SYMBOL(enable_kernel_fp);
#else
static inline void __giveup_fpu(struct task_struct *tsk) { }
#endif /* CONFIG_PPC_FPU */ #endif /* CONFIG_PPC_FPU */
#ifdef CONFIG_ALTIVEC #ifdef CONFIG_ALTIVEC
@@ -406,9 +408,8 @@ static unsigned long msr_all_available;
static int __init init_msr_all_available(void) static int __init init_msr_all_available(void)
{ {
#ifdef CONFIG_PPC_FPU if (IS_ENABLED(CONFIG_PPC_FPU))
msr_all_available |= MSR_FP; msr_all_available |= MSR_FP;
#endif
if (cpu_has_feature(CPU_FTR_ALTIVEC)) if (cpu_has_feature(CPU_FTR_ALTIVEC))
msr_all_available |= MSR_VEC; msr_all_available |= MSR_VEC;
if (cpu_has_feature(CPU_FTR_VSX)) if (cpu_has_feature(CPU_FTR_VSX))
@@ -438,10 +439,8 @@ void giveup_all(struct task_struct *tsk)
WARN_ON((usermsr & MSR_VSX) && !((usermsr & MSR_FP) && (usermsr & MSR_VEC))); WARN_ON((usermsr & MSR_VSX) && !((usermsr & MSR_FP) && (usermsr & MSR_VEC)));
#ifdef CONFIG_PPC_FPU
if (usermsr & MSR_FP) if (usermsr & MSR_FP)
__giveup_fpu(tsk); __giveup_fpu(tsk);
#endif
if (usermsr & MSR_VEC) if (usermsr & MSR_VEC)
__giveup_altivec(tsk); __giveup_altivec(tsk);
if (usermsr & MSR_SPE) if (usermsr & MSR_SPE)