linux-kernel - [PATCH 7/8] riscv: cpu_relax: switch to riscv_has_extension

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Message-Id: <20221006070818.3616-8-jszhang@kernel.org>
Date:   Thu,  6 Oct 2022 15:08:17 +0800
From:   Jisheng Zhang <jszhang@...nel.org>
To:     Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>
Cc:     linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 7/8] riscv: cpu_relax: switch to riscv_has_extension_likely()

Switch cpu_relax() from statich branch to the new helper
riscv_has_extension_likely()

Signed-off-by: Jisheng Zhang <jszhang@...nel.org>
---
 arch/riscv/include/asm/vdso/processor.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/include/asm/vdso/processor.h b/arch/riscv/include/asm/vdso/processor.h
index 1e4f8b4aef79..fb30480f36a0 100644
--- a/arch/riscv/include/asm/vdso/processor.h
+++ b/arch/riscv/include/asm/vdso/processor.h
@@ -10,7 +10,7 @@
 
 static inline void cpu_relax(void)
 {
-	if (!static_branch_likely(&riscv_isa_ext_keys[RISCV_ISA_EXT_KEY_ZIHINTPAUSE])) {
+	if (!riscv_has_extension_likely(RISCV_ISA_EXT_ZIHINTPAUSE)) {
 #ifdef __riscv_muldiv
 		int dummy;
 		/* In lieu of a halt instruction, induce a long-latency stall. */
-- 
2.37.2