leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

arm64/numa: remove the limitation that cpu0 must bind to node0

Browse Source 
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: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Zhen Lei 2016-09-01 14:55:04 +08:00 committed by Will Deacon
parent df7ffa34cc
commit 7ba5f605f3
2 changed files with 11 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm64/kernel/smp.c
View File

@ -624,6 +624,7 @@ static void __init of_parse_and_init_cpus(void)
}
bootcpu_valid = true;
early_map_cpu_to_node(0, of_node_to_nid(dn));
/*
* cpu_logical_map has already been

16
arch/arm64/mm/numa.c
View File

@ -116,16 +116,24 @@ static void __init setup_node_to_cpumask_map(void)
*/
void numa_store_cpu_info(unsigned int cpu)
{
map_cpu_to_node(cpu, numa_off ? 0 : cpu_to_node_map[cpu]);
map_cpu_to_node(cpu, cpu_to_node_map[cpu]);
}
void __init early_map_cpu_to_node(unsigned int cpu, int nid)
{
/* fallback to node 0 */
if (nid < 0 || nid >= MAX_NUMNODES)
if (nid < 0 || nid >= MAX_NUMNODES || numa_off)
nid = 0;
cpu_to_node_map[cpu] = nid;
/*
* We should set the numa node of cpu0 as soon as possible, because it
* has already been set up online before. cpu_to_node(0) will soon be
* called.
*/
if (!cpu)
set_cpu_numa_node(cpu, nid);
}
#ifdef CONFIG_HAVE_SETUP_PER_CPU_AREA
@ -393,10 +401,6 @@ static int __init numa_init(int (*init_func)(void))
setup_node_to_cpumask_map();
/* init boot processor */
cpu_to_node_map[0] = 0;
map_cpu_to_node(0, 0);
return 0;
}