1. Remove the old binding code.
2. Read the nid of cpu0 from dts.
3. Fallback the nid of cpu0 to 0 when numa=off is set in bootargs.
Signed-off-by: NZhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>

When the deleted code is executed, only the bit of cpu0 was set on
cpu_possible_mask. So that, only set_cpu_numa_node(0, NUMA_NO_NODE); will
be executed. And map_cpu_to_node(0, 0) will soon be called. So these code
can be safely removed.
Signed-off-by: NZhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>

To make each percpu area allocated from its local numa node. Without this
patch, all percpu areas will be allocated from the node which cpu0 belongs
to.
Signed-off-by: NZhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>

Use pr_fmt to prefix kernel output, and remove duplicated msg
of NUMA turned off.
Signed-off-by: NKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>

numa_init may return error because of numa configuration error. So "No
NUMA configuration found" is inaccurate. In fact, specific configuration
error information should be immediately printed by the testing branch.
Signed-off-by: NZhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>

Since asm/acpi.h is only included by linux/acpi.h when CONFIG_ACPI is
enabled, disabling the latter leads to the following build error on
arm64:

arch/arm64/mm/numa.c: In function ‘arm64_numa_init’:
arch/arm64/mm/numa.c:395:24: error: ‘arm64_acpi_numa_init’ undeclared (first use in this function)
   if (!acpi_disabled && !numa_init(arm64_acpi_numa_init))

This patch include the asm/acpi.h explicitly in arch/arm64/mm/numa.c for
the arm64_acpi_numa_init() definition.

Fixes: d8b47fca ("arm64, ACPI, NUMA: NUMA support based on SRAT and SLIT")
Reviewed-by: NHanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>

Introduce a new file to hold ACPI based NUMA information parsing from
SRAT and SLIT.

SRAT includes the CPU ACPI ID to Proximity Domain mappings and memory
ranges to Proximity Domain mapping.  SLIT has the information of inter
node distances(relative number for access latency).
Signed-off-by: NHanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: NGanapatrao Kulkarni <gkulkarni@caviumnetworks.com>
[rrichter@cavium.com Reworked for numa v10 series ]
Signed-off-by: NRobert Richter <rrichter@cavium.com>
[david.daney@cavium.com reorderd and combinded with other patches in
Hanjun Guo's original set, removed get_mpidr_in_madt() and use
acpi_map_madt_entry() instead.]
Signed-off-by: NDavid Daney <david.daney@cavium.com>
Reviewed-by: NCatalin Marinas <catalin.marinas@arm.com>
Tested-by: NDennis Chen <dennis.chen@arm.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

As noted by Dennis Chen, we don't want to print "No NUMA configuration
found" if NUMA was forced off from the command line.

Change the type of numa_off to bool, and clean up printing code.
Print "NUMA disabled" if forced off on command line and "No NUMA
configuration found" if there was no firmware NUMA information.
Signed-off-by: NDavid Daney <david.daney@cavium.com>
Acked-by: NCatalin Marinas <catalin.marinas@arm.com>
Reviewed-by: NDennis Chen <dennis.chen@arm.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

Rework numa_add_memblk() to update the parameter "u64 size" to "u64
end", this will make it consistent with x86 and simplifies the arm64
ACPI NUMA code to be added later.
Signed-off-by: NHanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: NRobert Richter <rrichter@cavium.com>
Signed-off-by: NDavid Daney <david.daney@cavium.com>
Acked-by: NCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

Attempt to get the memory and CPU NUMA node via of_numa.  If that
fails, default the dummy NUMA node and map all memory and CPUs to node
0.
Tested-by: NShannon Zhao <shannon.zhao@linaro.org>
Reviewed-by: NRobert Richter <rrichter@cavium.com>
Signed-off-by: NGanapatrao Kulkarni <gkulkarni@caviumnetworks.com>
Signed-off-by: NDavid Daney <david.daney@cavium.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>