-----Original Message----- From: tiantao (H) Sent: Wednesday, March 24, 2021 2:40 PM To: Song Bao Hua (Barry Song) song.bao.hua@hisilicon.com Cc: linuxarm@openeuler.org; tiantao (H) tiantao6@hisilicon.com Subject: [PATCH] dma-mapping: make map_benchmark compile into module
under some scenarios, it is necessary to compile map_benchmark into module to test iommu, so this patch changed Kconfig and export_symbol to implement map_benchmark compiled into module.
Maybe add:
On the other hand, map_benchmark is a driver, which is supposed to be able to run as a module.
Signed-off-by: Tian Tao tiantao6@hisilicon.com
Looks good to me. Thanks
kernel/dma/Kconfig | 2 +- kernel/kthread.c | 1 + 2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/dma/Kconfig b/kernel/dma/Kconfig index 77b4055..0468293 100644 --- a/kernel/dma/Kconfig +++ b/kernel/dma/Kconfig @@ -223,7 +223,7 @@ config DMA_API_DEBUG_SG If unsure, say N.
config DMA_MAP_BENCHMARK
- bool "Enable benchmarking of streaming DMA mapping"
- tristate "Enable benchmarking of streaming DMA mapping" depends on DEBUG_FS help Provides /sys/kernel/debug/dma_map_benchmark that helps with testing
diff --git a/kernel/kthread.c b/kernel/kthread.c index 1578973..fa4736f 100644 --- a/kernel/kthread.c +++ b/kernel/kthread.c @@ -455,6 +455,7 @@ void kthread_bind_mask(struct task_struct *p, const struct cpumask *mask) { __kthread_bind_mask(p, mask, TASK_UNINTERRUPTIBLE); } +EXPORT_SYMBOL(kthread_bind_mask);
/**
- kthread_bind - bind a just-created kthread to a cpu.
-- 2.7.4