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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>
This commit is contained in:
Jiaxun Yang 2023-02-21 13:16:55 +00:00 committed by Thomas Bogendoerfer
parent 5bd3990723
commit ac24cc1835
1 changed files with 3 additions and 3 deletions
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6
arch/mips/loongson64/smp.c
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@ -42,13 +42,13 @@ static uint32_t core0_c0count[NR_CPUS];
#define loongson3_ipi_write32(action, addr) \ #define loongson3_ipi_write32(action, addr) \
do { \ do { \
writel(action, addr); \ writel(action, addr); \
__wbflush(); \ nudge_writes(); \
} while (0) } while (0)
/* write a 64bit value to ipi register */ /* write a 64bit value to ipi register */
#define loongson3_ipi_write64(action, addr) \ #define loongson3_ipi_write64(action, addr) \
do { \ do { \
writeq(action, addr); \ writeq(action, addr); \
__wbflush(); \ nudge_writes(); \
} while (0) } while (0)
static u32 (*ipi_read_clear)(int cpu); 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; c0count = c0count ? c0count : 1;
for (i = 1; i < nr_cpu_ids; i++) for (i = 1; i < nr_cpu_ids; i++)
core0_c0count[i] = c0count; core0_c0count[i] = c0count;
__wbflush(); /* Let others see the result ASAP */ nudge_writes(); /* Let others see the result ASAP */
} }
return IRQ_HANDLED; return IRQ_HANDLED;