Linus Torvalds 5848dc5b1b dma-debug: remove debug_dma_assert_idle() function ... This remoes the code from the COW path to call debug_dma_assert_idle(), which was added many years ago. Google shows that it hasn't caught anything in the 6+ years we've had it apart from a false positive, and Hugh just noticed how it had a very unfortunate spinlock serialization in the COW path. He fixed that issue the previous commit (a85ffd59bd: "dma-debug: fix debug_dma_assert_idle(), use rcu_read_lock()"), but let's see if anybody even notices when we remove this function entirely. NOTE! We keep the dma tracking infrastructure that was added by the commit that introduced it. Partly to make it easier to resurrect this debug code if we ever deside to, and partly because that tracking by pfn and offset looks quite reasonable. The problem with this debug code was simply that it was expensive and didn't seem worth it, not that it was wrong per se. Acked-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2020-08-14 15:22:43 -07:00
..
coherent.c
contiguous.c	dma-contiguous: cleanup dma_alloc_contiguous	2020-07-28 13:42:15 +02:00
debug.c	dma-debug: remove debug_dma_assert_idle() function	2020-08-14 15:22:43 -07:00
direct.c	dma-mapping: inline the fast path dma-direct calls	2020-07-16 16:58:37 +02:00
dummy.c
Kconfig	dma-debug: remove debug_dma_assert_idle() function	2020-08-14 15:22:43 -07:00
Makefile	dma-mapping: make support for dma ops optional	2020-07-19 09:29:23 +02:00
mapping.c	dma-mapping: add a dma_ops_bypass flag to struct device	2020-07-19 09:29:29 +02:00
pool.c	dma-pool: do not allocate pool memory from CMA	2020-07-14 15:46:32 +02:00
remap.c
swiotlb.c
virt.c