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| author | Gu Zheng <guz.fnst@cn.fujitsu.com> | 2016-08-25 16:35:18 +0800 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-09-21 21:18:39 +0200 |
| commit | dc6db24d2476cd09c0ecf2b8d80313539f737a89 (patch) | |
| tree | a42cb20e94757560eeabaf8ebe800254e166e8b2 /arch/x86/kernel/acpi | |
| parent | 8ad893faf2eaedb710a3073afbb5d569df2c3e41 (diff) | |
| download | linux-dc6db24d2476cd09c0ecf2b8d80313539f737a89.tar.gz linux-dc6db24d2476cd09c0ecf2b8d80313539f737a89.tar.bz2 linux-dc6db24d2476cd09c0ecf2b8d80313539f737a89.zip | |
x86/acpi: Set persistent cpuid <-> nodeid mapping when booting
The whole patch-set aims at making cpuid <-> nodeid mapping persistent. So that,
when node online/offline happens, cache based on cpuid <-> nodeid mapping such as
wq_numa_possible_cpumask will not cause any problem.
It contains 4 steps:
1. Enable apic registeration flow to handle both enabled and disabled cpus.
2. Introduce a new array storing all possible cpuid <-> apicid mapping.
3. Enable _MAT and MADT relative apis to return non-present or disabled cpus' apicid.
4. Establish all possible cpuid <-> nodeid mapping.
This patch finishes step 4.
This patch set the persistent cpuid <-> nodeid mapping for all enabled/disabled
processors at boot time via an additional acpi namespace walk for processors.
[ tglx: Remove the unneeded exports ]
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com>
Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: mika.j.penttila@gmail.com
Cc: len.brown@intel.com
Cc: rafael@kernel.org
Cc: rjw@rjwysocki.net
Cc: yasu.isimatu@gmail.com
Cc: linux-mm@kvack.org
Cc: linux-acpi@vger.kernel.org
Cc: isimatu.yasuaki@jp.fujitsu.com
Cc: gongzhaogang@inspur.com
Cc: tj@kernel.org
Cc: izumi.taku@jp.fujitsu.com
Cc: cl@linux.com
Cc: chen.tang@easystack.cn
Cc: akpm@linux-foundation.org
Cc: kamezawa.hiroyu@jp.fujitsu.com
Cc: lenb@kernel.org
Link: http://lkml.kernel.org/r/1472114120-3281-6-git-send-email-douly.fnst@cn.fujitsu.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/acpi')
| -rw-r--r-- | arch/x86/kernel/acpi/boot.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 7d668d172fce..fc8841016116 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -702,7 +702,7 @@ static void __init acpi_set_irq_model_ioapic(void) #ifdef CONFIG_ACPI_HOTPLUG_CPU #include <acpi/processor.h> -static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) +int acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) { #ifdef CONFIG_ACPI_NUMA int nid; @@ -713,6 +713,7 @@ static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) numa_set_node(cpu, nid); } #endif + return 0; } int acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, int *pcpu) |