Commit ac24cc18 authored by Jiaxun Yang's avatar Jiaxun Yang Committed by Thomas Bogendoerfer
Browse files

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: default avatarJiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
parent 5bd39907

arch/mips/loongson64/smp.c

+3 −3
Original line number Diff line number Diff line
@@ -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;