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authorDou Liyang <douly.fnst@cn.fujitsu.com>2017-03-03 16:02:23 +0800
committerThomas Gleixner <tglx@linutronix.de>2017-03-11 14:41:18 +0100
commitc962cff17dfa11f4a8227ac16de2b28aea3312e4 (patch)
tree8400e016a0a9eb1583a7986216d4422b0bcb2a92 /drivers/acpi/acpi_processor.c
parent434fd6353b4c83938029ca6ea7dfa4fc82d602bd (diff)
Revert "x86/acpi: Set persistent cpuid <-> nodeid mapping when booting"
Revert: dc6db24d2476 ("x86/acpi: Set persistent cpuid <-> nodeid mapping when booting") The mapping of "cpuid <-> nodeid" is established at boot time via ACPI tables to keep associations of workqueues and other node related items consistent across cpu hotplug. But, ACPI tables are unreliable and failures with that boot time mapping have been reported on machines where the ACPI table and the physical information which is retrieved at actual hotplug is inconsistent. Revert the mapping implementation so it can be replaced with a less error prone approach. Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com> Tested-by: Xiaolong Ye <xiaolong.ye@intel.com> Cc: rjw@rjwysocki.net Cc: linux-acpi@vger.kernel.org Cc: guzheng1@huawei.com Cc: izumi.taku@jp.fujitsu.com Cc: lenb@kernel.org Link: http://lkml.kernel.org/r/1488528147-2279-2-git-send-email-douly.fnst@cn.fujitsu.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/acpi/acpi_processor.c')
-rw-r--r--drivers/acpi/acpi_processor.c5
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
index 4467a8089ab8..5d208a99d0c9 100644
--- a/drivers/acpi/acpi_processor.c
+++ b/drivers/acpi/acpi_processor.c
@@ -182,11 +182,6 @@ int __weak arch_register_cpu(int cpu)
void __weak arch_unregister_cpu(int cpu) {}
-int __weak acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
-{
- return -ENODEV;
-}
-
static int acpi_processor_hotadd_init(struct acpi_processor *pr)
{
unsigned long long sta;