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mm: replace all open encodings for NUMA_NO_NODE

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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
父節點 6ade20327d
當前提交 98fa15f34c
共有 39 個文件被更改，包括 104 次插入 和 74 次删除
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12
mm/memory_hotplug.c
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@@ -702,9 +702,9 @@ static void node_states_check_changes_online(unsigned long nr_pages,
{
int nid = zone_to_nid(zone);
arg->status_change_nid = -1;
arg->status_change_nid_normal = -1;
arg->status_change_nid_high = -1;
arg->status_change_nid = NUMA_NO_NODE;
arg->status_change_nid_normal = NUMA_NO_NODE;
arg->status_change_nid_high = NUMA_NO_NODE;
if (!node_state(nid, N_MEMORY))
arg->status_change_nid = nid;
@@ -1509,9 +1509,9 @@ static void node_states_check_changes_offline(unsigned long nr_pages,
unsigned long present_pages = 0;
enum zone_type zt;
arg->status_change_nid = -1;
arg->status_change_nid_normal = -1;
arg->status_change_nid_high = -1;
arg->status_change_nid = NUMA_NO_NODE;
arg->status_change_nid_normal = NUMA_NO_NODE;
arg->status_change_nid_high = NUMA_NO_NODE;
/*
* Check whether node_states[N_NORMAL_MEMORY] will be changed.