From: Jiaxun Yang <jiaxun.yang@flygoat.com>
Date: Tue, 21 Feb 2023 13:16:55 +0000 (+0000)
Subject: MIPS: Loongson64: smp: Use nudge_writes instead of wbflush
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=ac24cc1835c8e6400230f0bf50e6ba0ab75cb09f;p=linux.git

MIPS: Loongson64: smp: Use nudge_writes instead of wbflush

wbflush here intends to let other cores see the results ASAP,
nudge_writes fits this purpose better.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
---

diff --git a/arch/mips/loongson64/smp.c b/arch/mips/loongson64/smp.c
index c268c6dd1ef19..e9d91da7fe247 100644
--- a/arch/mips/loongson64/smp.c
+++ b/arch/mips/loongson64/smp.c
@@ -42,13 +42,13 @@ static uint32_t core0_c0count[NR_CPUS];
 #define loongson3_ipi_write32(action, addr)	\
 	do {					\
 		writel(action, addr);		\
-		__wbflush();			\
+		nudge_writes();			\
 	} while (0)
 /* write a 64bit value to ipi register */
 #define loongson3_ipi_write64(action, addr)	\
 	do {					\
 		writeq(action, addr);		\
-		__wbflush();			\
+		nudge_writes();			\
 	} while (0)
 
 static u32 (*ipi_read_clear)(int cpu);
@@ -418,7 +418,7 @@ static irqreturn_t loongson3_ipi_interrupt(int irq, void *dev_id)
 		c0count = c0count ? c0count : 1;
 		for (i = 1; i < nr_cpu_ids; i++)
 			core0_c0count[i] = c0count;
-		__wbflush(); /* Let others see the result ASAP */
+		nudge_writes(); /* Let others see the result ASAP */
 	}
 
 	return IRQ_HANDLED;