netdev - [PATCH 1/1] bpf: avoid unnecessary IPI in bpf_flush

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Date:   Tue,  1 Jun 2021 23:06:25 +0800
From:   Yanfei Xu <yanfei.xu@...driver.com>
To:     daniel@...earbox.net, ast@...nel.org, zlim.lnx@...il.com,
        catalin.marinas@....com, will@...nel.org, andrii@...nel.org,
        kafai@...com, songliubraving@...com, yhs@...com,
        john.fastabend@...il.com, kpsingh@...nel.org
Cc:     netdev@...r.kernel.org, bpf@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/1] bpf: avoid unnecessary IPI in bpf_flush_icache

It's no need to trigger IPI for keeping pipeline fresh in bpf case.

Signed-off-by: Yanfei Xu <yanfei.xu@...driver.com>
---
 arch/arm64/net/bpf_jit_comp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c
index f7b194878a99..5311f8be4ba4 100644
--- a/arch/arm64/net/bpf_jit_comp.c
+++ b/arch/arm64/net/bpf_jit_comp.c
@@ -974,7 +974,7 @@ static int validate_code(struct jit_ctx *ctx)
 
 static inline void bpf_flush_icache(void *start, void *end)
 {
-	flush_icache_range((unsigned long)start, (unsigned long)end);
+	__flush_icache_range((unsigned long)start, (unsigned long)end);
 }
 
 struct arm64_jit_data {
-- 
2.27.0