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riscv: fpu: switch has_fpu() to riscv_has_extension_likely()

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Switch has_fpu() from static branch to the new helper
riscv_has_extension_likely().

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230128172856.3814-7-jszhang@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Jisheng Zhang 2023-01-29 01:28:49 +08:00 • committed by Palmer Dabbelt
parent bdda5d554e
commit 702e64550b
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1 changed files with 2 additions and 1 deletions
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3
arch/riscv/include/asm/switch_to.h
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@ -59,7 +59,8 @@ static inline void __switch_to_aux(struct task_struct *prev,
static __always_inline bool has_fpu(void) static __always_inline bool has_fpu(void)
{ {
return static_branch_likely(&riscv_isa_ext_keys[RISCV_ISA_EXT_KEY_FPU]); return riscv_has_extension_likely(RISCV_ISA_EXT_f) ||
riscv_has_extension_likely(RISCV_ISA_EXT_d);
} }
#else #else
static __always_inline bool has_fpu(void) { return false; } static __always_inline bool has_fpu(void) { return false; }