Refactor CONFIG_SPE check on Linux/powerpc
Commit 5401472 adds a check to call enable_kernel_spe and disable_kernel_spe only if CONFIG_SPE is defined. Refactor this check in a way similar to what CONFIG_ALTIVEC and CONFIG_VSX are checked, in order to remove redundant kfpu_begin() and kfpu_end() implementations. Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: WHR <msl0000023508@gmail.com> Closes #14623
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@ -80,40 +80,32 @@
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#define ENABLE_KERNEL_VSX
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#define DISABLE_KERNEL_VSX
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#endif
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#ifdef CONFIG_SPE
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#define kfpu_begin() \
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{ \
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preempt_disable(); \
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ENABLE_KERNEL_ALTIVEC \
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ENABLE_KERNEL_VSX \
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enable_kernel_spe(); \
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}
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#define kfpu_end() \
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{ \
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disable_kernel_spe(); \
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DISABLE_KERNEL_VSX \
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DISABLE_KERNEL_ALTIVEC \
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preempt_enable(); \
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}
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#else /* CONFIG_SPE */
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#define kfpu_begin() \
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{ \
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preempt_disable(); \
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ENABLE_KERNEL_ALTIVEC \
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ENABLE_KERNEL_VSX \
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}
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#define kfpu_end() \
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{ \
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DISABLE_KERNEL_VSX \
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DISABLE_KERNEL_ALTIVEC \
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preempt_enable(); \
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}
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#ifdef CONFIG_SPE
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#define ENABLE_KERNEL_SPE enable_kernel_spe();
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#define DISABLE_KERNEL_SPE disable_kernel_spe();
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#else
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#define ENABLE_KERNEL_SPE
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#define DISABLE_KERNEL_SPE
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#endif
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#define kfpu_begin() \
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{ \
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preempt_disable(); \
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ENABLE_KERNEL_ALTIVEC \
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ENABLE_KERNEL_VSX \
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ENABLE_KERNEL_SPE \
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}
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#define kfpu_end() \
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{ \
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DISABLE_KERNEL_SPE \
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DISABLE_KERNEL_VSX \
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DISABLE_KERNEL_ALTIVEC \
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preempt_enable(); \
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}
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#else
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/* seems that before 4.5 no-one bothered */
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#define kfpu_begin()
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#define kfpu_end() preempt_enable()
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#endif
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#endif /* Linux version >= 4.5 */
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#define kfpu_init() 0
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#define kfpu_fini() ((void) 0)
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