linux-kernel - [PATCH v3 1/2] riscv: Remove superfluous smp

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Message-Id: <20240229121056.203419-2-alexghiti@rivosinc.com>
Date: Thu, 29 Feb 2024 13:10:55 +0100
From: Alexandre Ghiti <alexghiti@...osinc.com>
To: Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Andrea Parri <andrea@...osinc.com>,
	Samuel Holland <samuel.holland@...ive.com>,
	Anup Patel <anup@...infault.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	linux-riscv@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org
Cc: Alexandre Ghiti <alexghiti@...osinc.com>,
	Andrea Parri <parri.andrea@...il.com>
Subject: [PATCH v3 1/2] riscv: Remove superfluous smp_mb()

This memory barrier is not needed and not documented so simply remove
it.

Suggested-by: Andrea Parri <andrea@...osinc.com>
Signed-off-by: Alexandre Ghiti <alexghiti@...osinc.com>
Reviewed-by: Andrea Parri <parri.andrea@...il.com>
---
 arch/riscv/kernel/patch.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/riscv/kernel/patch.c b/arch/riscv/kernel/patch.c
index 37e87fdcf6a0..0b5c16dfe3f4 100644
--- a/arch/riscv/kernel/patch.c
+++ b/arch/riscv/kernel/patch.c
@@ -239,7 +239,6 @@ static int patch_text_cb(void *data)
 	} else {
 		while (atomic_read(&patch->cpu_count) <= num_online_cpus())
 			cpu_relax();
-		smp_mb();
 	}
 
 	return ret;
-- 
2.39.2