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riscv: cpu_relax: switch to riscv_has_extension_likely()
Switch cpu_relax() 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: Guo Ren <guoren@kernel.org> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Link: https://lore.kernel.org/r/20230128172856.3814-12-jszhang@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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static inline void cpu_relax(void)
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static inline void cpu_relax(void)
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{
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{
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if (!static_branch_likely(&riscv_isa_ext_keys[RISCV_ISA_EXT_KEY_ZIHINTPAUSE])) {
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if (!riscv_has_extension_likely(RISCV_ISA_EXT_ZIHINTPAUSE)) {
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#ifdef __riscv_muldiv
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#ifdef __riscv_muldiv
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int dummy;
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int dummy;
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/* In lieu of a halt instruction, induce a long-latency stall. */
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/* In lieu of a halt instruction, induce a long-latency stall. */
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