[PATCH] mm: kmemleak: Ignore kmemleak scanning on CMA regions
From: Calvin Zhang <hidden>
Date: 2021-11-26 03:50:44
Also in:
linux-iommu, linux-mm, lkml
Subsystem:
dma mapping helpers, the rest · Maintainers:
Marek Szyprowski, Linus Torvalds
Just like this:
commit 620951e27457 ("mm/cma: make kmemleak ignore CMA regions").
Add kmemleak_ignore_phys() for CMA created from of reserved node.
Signed-off-by: Calvin Zhang <redacted>
---
kernel/dma/contiguous.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/kernel/dma/contiguous.c b/kernel/dma/contiguous.c
index 3d63d91cba5c..66bd9a59615e 100644
--- a/kernel/dma/contiguous.c
+++ b/kernel/dma/contiguous.c@@ -50,6 +50,7 @@ #include <linux/sizes.h> #include <linux/dma-map-ops.h> #include <linux/cma.h> +#include <linux/kmemleak.h> #ifdef CONFIG_CMA_SIZE_MBYTES #define CMA_SIZE_MBYTES CONFIG_CMA_SIZE_MBYTES
@@ -426,6 +427,9 @@ static int __init rmem_cma_setup(struct reserved_mem *rmem) pr_err("Reserved memory: unable to setup CMA region\n"); return err; } + + kmemleak_ignore_phys(rmem->base); + /* Architecture specific contiguous memory fixup. */ dma_contiguous_early_fixup(rmem->base, rmem->size);
--
2.30.2