| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20200814214725.28818-7-atish.patra@wdc.com>
Date: Fri, 14 Aug 2020 14:47:25 -0700
From: Atish Patra <atish.patra@....com>
To: linux-kernel@...r.kernel.org
Cc: Atish Patra <atish.patra@....com>,
Greentime Hu <greentime.hu@...ive.com>,
Albert Ou <aou@...s.berkeley.edu>,
Andrew Morton <akpm@...ux-foundation.org>,
Anshuman Khandual <anshuman.khandual@....com>,
Anup Patel <Anup.Patel@....com>, Arnd Bergmann <arnd@...db.de>,
Catalin Marinas <catalin.marinas@....com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
linux-arch@...r.kernel.org, linux-riscv@...ts.infradead.org,
Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
Mike Rapoport <rppt@...nel.org>,
Nick Hu <nickhu@...estech.com>,
Palmer Dabbelt <palmer@...belt.com>,
Paul Walmsley <paul.walmsley@...ive.com>,
"Rafael J. Wysocki" <rafael@...nel.org>,
Rob Herring <robh@...nel.org>,
Steven Price <steven.price@....com>,
Will Deacon <will@...nel.org>, Zong Li <zong.li@...ive.com>,
Ganapatrao Kulkarni <gkulkarni@...ium.com>,
linux-arm-kernel@...ts.infradead.org
Subject: [RFC/RFT PATCH 6/6] riscv: Add numa support for riscv64 platform
Use the generic numa implementation to add NUMA support for RISC-V.
This is based on Greentime's patch[1] but modified to use generic NUMA
implementation and few more fixes.
[1] https://lkml.org/lkml/2020/1/10/233
Co-developed-by: Greentime Hu <greentime.hu@...ive.com>
Signed-off-by: Greentime Hu <greentime.hu@...ive.com>
Signed-off-by: Atish Patra <atish.patra@....com>
---
arch/riscv/Kconfig | 31 ++++++++++++++++++++++++++++++-
arch/riscv/include/asm/mmzone.h | 13 +++++++++++++
arch/riscv/include/asm/numa.h | 8 ++++++++
arch/riscv/include/asm/pci.h | 10 ++++++++++
arch/riscv/kernel/setup.c | 10 ++++++++--
arch/riscv/kernel/smpboot.c | 12 +++++++++++-
arch/riscv/mm/init.c | 4 +++-
7 files changed, 83 insertions(+), 5 deletions(-)
create mode 100644 arch/riscv/include/asm/mmzone.h
create mode 100644 arch/riscv/include/asm/numa.h
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 7b5905529146..4bd67f94aaac 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -137,7 +137,7 @@ config PAGE_OFFSET
default 0xffffffe000000000 if 64BIT && MAXPHYSMEM_128GB
config ARCH_FLATMEM_ENABLE
- def_bool y
+ def_bool !NUMA
config ARCH_SPARSEMEM_ENABLE
def_bool y
@@ -295,6 +295,35 @@ config TUNE_GENERIC
endchoice
+# Common NUMA Features
+config NUMA
+ bool "Numa Memory Allocation and Scheduler Support"
+ select GENERIC_ARCH_NUMA
+ select OF_NUMA
+ select ARCH_SUPPORTS_NUMA_BALANCING
+ help
+ Enable NUMA (Non-Uniform Memory Access) support.
+
+ The kernel will try to allocate memory used by a CPU on the
+ local memory of the CPU and add some more NUMA awareness to the kernel.
+
+config NODES_SHIFT
+ int "Maximum NUMA Nodes (as a power of 2)"
+ range 1 10
+ default "2"
+ depends on NEED_MULTIPLE_NODES
+ help
+ Specify the maximum number of NUMA Nodes available on the target
+ system. Increases memory reserved to accommodate various tables.
+
+config USE_PERCPU_NUMA_NODE_ID
+ def_bool y
+ depends on NUMA
+
+config NEED_PER_CPU_EMBED_FIRST_CHUNK
+ def_bool y
+ depends on NUMA
+
config RISCV_ISA_C
bool "Emit compressed instructions when building Linux"
default y
diff --git a/arch/riscv/include/asm/mmzone.h b/arch/riscv/include/asm/mmzone.h
new file mode 100644
index 000000000000..fa17e01d9ab2
--- /dev/null
+++ b/arch/riscv/include/asm/mmzone.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_MMZONE_H
+#define __ASM_MMZONE_H
+
+#ifdef CONFIG_NUMA
+
+#include <asm/numa.h>
+
+extern struct pglist_data *node_data[];
+#define NODE_DATA(nid) (node_data[(nid)])
+
+#endif /* CONFIG_NUMA */
+#endif /* __ASM_MMZONE_H */
diff --git a/arch/riscv/include/asm/numa.h b/arch/riscv/include/asm/numa.h
new file mode 100644
index 000000000000..8c8cf4297cc3
--- /dev/null
+++ b/arch/riscv/include/asm/numa.h
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_NUMA_H
+#define __ASM_NUMA_H
+
+#include <asm/topology.h>
+#include <asm-generic/numa.h>
+
+#endif /* __ASM_NUMA_H */
diff --git a/arch/riscv/include/asm/pci.h b/arch/riscv/include/asm/pci.h
index 1c473a1bd986..d6a0e59638c0 100644
--- a/arch/riscv/include/asm/pci.h
+++ b/arch/riscv/include/asm/pci.h
@@ -32,6 +32,16 @@ static inline int pci_proc_domain(struct pci_bus *bus)
/* always show the domain in /proc */
return 1;
}
+
+#ifdef CONFIG_NUMA
+int pcibus_to_node(struct pci_bus *bus);
+#ifndef cpumask_of_pcibus
+#define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \
+ cpu_all_mask : \
+ cpumask_of_node(pcibus_to_node(bus)))
+#endif
+#endif /* CONFIG_NUMA */
+
#endif /* CONFIG_PCI */
#endif /* _ASM_RISCV_PCI_H */
diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
index 32bb5a1bea05..1533ee5c6e56 100644
--- a/arch/riscv/kernel/setup.c
+++ b/arch/riscv/kernel/setup.c
@@ -104,13 +104,19 @@ void __init setup_arch(char **cmdline_p)
static int __init topology_init(void)
{
- int i;
+ int i, ret;
+
+ for_each_online_node(i)
+ register_one_node(i);
for_each_possible_cpu(i) {
struct cpu *cpu = &per_cpu(cpu_devices, i);
cpu->hotpluggable = cpu_has_hotplug(i);
- register_cpu(cpu, i);
+ ret = register_cpu(cpu, i);
+ if (unlikely(ret))
+ pr_warn("Warning: %s: register_cpu %d failed (%d)\n",
+ __func__, i, ret);
}
return 0;
diff --git a/arch/riscv/kernel/smpboot.c b/arch/riscv/kernel/smpboot.c
index 356825a57551..4e9bdb6230de 100644
--- a/arch/riscv/kernel/smpboot.c
+++ b/arch/riscv/kernel/smpboot.c
@@ -28,6 +28,7 @@
#include <asm/cpu_ops.h>
#include <asm/irq.h>
#include <asm/mmu_context.h>
+#include <asm/numa.h>
#include <asm/tlbflush.h>
#include <asm/sections.h>
#include <asm/sbi.h>
@@ -46,13 +47,18 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
{
int cpuid;
int ret;
+ unsigned int curr_cpuid;
+
+ curr_cpuid = smp_processor_id();
+ numa_store_cpu_info(curr_cpuid);
+ numa_add_cpu(curr_cpuid);
/* This covers non-smp usecase mandated by "nosmp" option */
if (max_cpus == 0)
return;
for_each_possible_cpu(cpuid) {
- if (cpuid == smp_processor_id())
+ if (cpuid == curr_cpuid)
continue;
if (cpu_ops[cpuid]->cpu_prepare) {
ret = cpu_ops[cpuid]->cpu_prepare(cpuid);
@@ -60,6 +66,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
continue;
}
set_cpu_present(cpuid, true);
+ numa_store_cpu_info(cpuid);
}
}
@@ -80,6 +87,7 @@ void __init setup_smp(void)
if (hart == cpuid_to_hartid_map(0)) {
BUG_ON(found_boot_cpu);
found_boot_cpu = 1;
+ early_map_cpu_to_node(0, of_node_to_nid(dn));
continue;
}
if (cpuid >= NR_CPUS) {
@@ -89,6 +97,7 @@ void __init setup_smp(void)
}
cpuid_to_hartid_map(cpuid) = hart;
+ early_map_cpu_to_node(cpuid, of_node_to_nid(dn));
cpuid++;
}
@@ -155,6 +164,7 @@ asmlinkage __visible void smp_callin(void)
current->active_mm = mm;
notify_cpu_starting(curr_cpuid);
+ numa_add_cpu(curr_cpuid);
update_siblings_masks(curr_cpuid);
set_cpu_online(curr_cpuid, 1);
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index b8905ae2bbe7..d1f4e94626aa 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -20,6 +20,7 @@
#include <asm/soc.h>
#include <asm/io.h>
#include <asm/ptdump.h>
+#include <asm/numa.h>
#include "../kernel/head.h"
@@ -190,7 +191,6 @@ void __init setup_bootmem(void)
early_init_fdt_scan_reserved_mem();
memblock_allow_resize();
- memblock_dump_all();
for_each_memblock(memory, reg) {
unsigned long start_pfn = memblock_region_memory_base_pfn(reg);
@@ -575,9 +575,11 @@ void __init paging_init(void)
void __init misc_mem_init(void)
{
+ arch_numa_init();
sparse_init();
zone_sizes_init();
resource_init();
+ memblock_dump_all();
}
#ifdef CONFIG_SPARSEMEM_VMEMMAP
--
2.24.0
Powered by blists - more mailing lists