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| author | Anshuman Khandual <anshuman.khandual@arm.com> | 2019-03-06 00:42:58 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-06 06:07:14 +0100 |
| commit | 98fa15f34cb379864757670b8e8743b21456a20e (patch) | |
| tree | 18a360dd850e9a5d67db7a0700f0b3a82a3f8e2b /drivers/dma/dmaengine.c | |
| parent | mm/vmalloc.c: don't dereference possible NULL pointer in __vunmap() (diff) | |
| download | linux-98fa15f34cb379864757670b8e8743b21456a20e.tar.xz linux-98fa15f34cb379864757670b8e8743b21456a20e.zip | |
mm: replace all open encodings for NUMA_NO_NODE
Patch series "Replace all open encodings for NUMA_NO_NODE", v3.
All these places for replacement were found by running the following
grep patterns on the entire kernel code. Please let me know if this
might have missed some instances. This might also have replaced some
false positives. I will appreciate suggestions, inputs and review.
1. git grep "nid == -1"
2. git grep "node == -1"
3. git grep "nid = -1"
4. git grep "node = -1"
This patch (of 2):
At present there are multiple places where invalid node number is
encoded as -1. Even though implicitly understood it is always better to
have macros in there. Replace these open encodings for an invalid node
number with the global macro NUMA_NO_NODE. This helps remove NUMA
related assumptions like 'invalid node' from various places redirecting
them to a common definition.
Link: http://lkml.kernel.org/r/1545127933-10711-2-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> [ixgbe]
Acked-by: Jens Axboe <axboe@kernel.dk> [mtip32xx]
Acked-by: Vinod Koul <vkoul@kernel.org> [dmaengine.c]
Acked-by: Michael Ellerman <mpe@ellerman.id.au> [powerpc]
Acked-by: Doug Ledford <dledford@redhat.com> [drivers/infiniband]
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/dma/dmaengine.c')
| -rw-r--r-- | drivers/dma/dmaengine.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c index f1a441ab395d..3a11b1092e80 100644 --- a/drivers/dma/dmaengine.c +++ b/drivers/dma/dmaengine.c @@ -63,6 +63,7 @@ #include <linux/acpi_dma.h> #include <linux/of_dma.h> #include <linux/mempool.h> +#include <linux/numa.h> static DEFINE_MUTEX(dma_list_mutex); static DEFINE_IDA(dma_ida); @@ -386,7 +387,8 @@ EXPORT_SYMBOL(dma_issue_pending_all); static bool dma_chan_is_local(struct dma_chan *chan, int cpu) { int node = dev_to_node(chan->device->dev); - return node == -1 || cpumask_test_cpu(cpu, cpumask_of_node(node)); + return node == NUMA_NO_NODE || + cpumask_test_cpu(cpu, cpumask_of_node(node)); } /** |