The patch titled
Subject: dma-mapping: make map_benchmark compile into module
has been added to the -mm tree. Its filename is
dma-mapping-make-map_benchmark-compile-into-module.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/dma-mapping-make-map_benchmark-compile-into-module.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/dma-mapping-make-map_benchmark-compile-into-module.patch
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------------------------------------------------------
From: Tian Tao <tiantao6@xxxxxxxxxxxxx>
Subject: dma-mapping: make map_benchmark compile into module
Under some scenarios, it is necessary to compile map_benchmark into a
module to test iommu, so this patch changes Kconfig and export_symbol to
implement map_benchmark compiled into module.
On the other hand, map_benchmark is a driver, which is supposed to be able
to run as a module.
Link: https://lkml.kernel.org/r/1616552258-22282-1-git-send-email-tiantao6@xxxxxxxxxxxxx
Signed-off-by: Tian Tao <tiantao6@xxxxxxxxxxxxx>
Acked-by: Barry Song <song.bao.hua@xxxxxxxxxxxxx>
Cc: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Cc: Paul E. McKenney <paulmck@xxxxxxxxxx>
Cc: Alexei Starovoitov <ast@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/dma/Kconfig | 2 +-
kernel/kthread.c | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)
--- a/kernel/dma/Kconfig~dma-mapping-make-map_benchmark-compile-into-module
+++ a/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
--- a/kernel/kthread.c~dma-mapping-make-map_benchmark-compile-into-module
+++ a/kernel/kthread.c
@@ -455,6 +455,7 @@ void kthread_bind_mask(struct task_struc
{
__kthread_bind_mask(p, mask, TASK_UNINTERRUPTIBLE);
}
+EXPORT_SYMBOL(kthread_bind_mask);
/**
* kthread_bind - bind a just-created kthread to a cpu.
_
Patches currently in -mm which might be from tiantao6@xxxxxxxxxxxxx are
dma-mapping-make-map_benchmark-compile-into-module.patch
