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mm: replace all open encodings for NUMA_NO_NODE

Telusuri Sumber 
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>
This commit is contained in:
Anshuman Khandual
2019-03-05 15:42:58 -08:00
committed by Linus Torvalds
orang tua 6ade20327d
melakukan 98fa15f34c
39 mengubah file dengan 104 tambahan dan 74 penghapusan
Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/iommu/dmar.c
Melihat File

@@ -39,6 +39,7 @@
#include <linux/dmi.h>
#include <linux/slab.h>
#include <linux/iommu.h>
#include <linux/numa.h>
#include <asm/irq_remapping.h>
#include <asm/iommu_table.h>
@@ -477,7 +478,7 @@ static int dmar_parse_one_rhsa(struct acpi_dmar_header *header, void *arg)
int node = acpi_map_pxm_to_node(rhsa->proximity_domain);
if (!node_online(node))
node = -1;
node = NUMA_NO_NODE;
drhd->iommu->node = node;
return 0;
}
@@ -1062,7 +1063,7 @@ static int alloc_iommu(struct dmar_drhd_unit *drhd)
iommu->msagaw = msagaw;
iommu->segment = drhd->segment;
iommu->node = -1;
iommu->node = NUMA_NO_NODE;
ver = readl(iommu->reg + DMAR_VER_REG);
pr_info("%s: reg_base_addr %llx ver %d:%d cap %llx ecap %llx\n",

3
drivers/iommu/intel-iommu.c
Melihat File

@@ -47,6 +47,7 @@
#include <linux/dma-contiguous.h>
#include <linux/dma-direct.h>
#include <linux/crash_dump.h>
#include <linux/numa.h>
#include <asm/irq_remapping.h>
#include <asm/cacheflush.h>
#include <asm/iommu.h>
@@ -1716,7 +1717,7 @@ static struct dmar_domain *alloc_domain(int flags)
return NULL;
memset(domain, 0, sizeof(*domain));
domain->nid = -1;
domain->nid = NUMA_NO_NODE;
domain->flags = flags;
domain->has_iotlb_device = false;
INIT_LIST_HEAD(&domain->devices);