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SubjectRe: [PATCH 1/2] arm64: PCI: Remove node-local allocations when initialising host controller
On Tue, Aug 28, 2018 at 04:05:12PM +0100, Punit Agrawal wrote:
> Memory for host controller data structures is allocated local to the
> node to which the controller is associated with. This has been the
> behaviour since support for ACPI was added in
> commit 0cb0786bac15 ("ARM64: PCI: Support ACPI-based PCI host controller").
>
> Drop the node local allocation as there is no benefit from doing so -
> the usage of these structures is independent from where the controller
> is located.
>
> Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Will Deacon <will.deacon@arm.com>
> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
> Cc: linux-arm-kernel@lists.infradead.org
> ---
> arch/arm64/kernel/pci.c | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)

Acked-by: Will Deacon <will.deacon@arm.com>

Will

> diff --git a/arch/arm64/kernel/pci.c b/arch/arm64/kernel/pci.c
> index 0e2ea1c78542..bb85e2f4603f 100644
> --- a/arch/arm64/kernel/pci.c
> +++ b/arch/arm64/kernel/pci.c
> @@ -165,16 +165,15 @@ static void pci_acpi_generic_release_info(struct acpi_pci_root_info *ci)
> /* Interface called from ACPI code to setup PCI host controller */
> struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)
> {
> - int node = acpi_get_node(root->device->handle);
> struct acpi_pci_generic_root_info *ri;
> struct pci_bus *bus, *child;
> struct acpi_pci_root_ops *root_ops;
>
> - ri = kzalloc_node(sizeof(*ri), GFP_KERNEL, node);
> + ri = kzalloc(sizeof(*ri), GFP_KERNEL);
> if (!ri)
> return NULL;
>
> - root_ops = kzalloc_node(sizeof(*root_ops), GFP_KERNEL, node);
> + root_ops = kzalloc(sizeof(*root_ops), GFP_KERNEL);
> if (!root_ops) {
> kfree(ri);
> return NULL;
> --
> 2.18.0
>

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