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| author | Boris Ostrovsky <boris.ostrovsky@oracle.com> | 2016-12-13 07:18:29 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-12-15 13:32:32 +0300 |
| commit | aec03f89e905dca9ce4b061e03ee1da3a3eb3432 (patch) | |
| tree | b6da0a16933419e0298371c8108e209b8d77865d /arch/arm64/include/asm/numa.h | |
| parent | 4370a3ef39f3d07342a1ae9967701bd697c8d9df (diff) | |
| download | linux-aec03f89e905dca9ce4b061e03ee1da3a3eb3432.tar.xz | |
ACPI/NUMA: Do not map pxm to node when NUMA is turned off
acpi_map_pxm_to_node() unconditially maps nodes even when NUMA is turned
off. So acpi_get_node() might return a node > 0, which is fatal when NUMA
is disabled as the rest of the kernel assumes that only node 0 exists.
Expose numa_off to the acpi code and return NUMA_NO_NODE when it's set.
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: fenghua.yu@intel.com
Cc: tony.luck@intel.com
Cc: linux-ia64@vger.kernel.org
Cc: catalin.marinas@arm.com
Cc: rjw@rjwysocki.net
Cc: will.deacon@arm.com
Cc: linux-acpi@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: lenb@kernel.org
Link: http://lkml.kernel.org/r/1481602709-18260-1-git-send-email-boris.ostrovsky@oracle.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/arm64/include/asm/numa.h')
| -rw-r--r-- | arch/arm64/include/asm/numa.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/numa.h b/arch/arm64/include/asm/numa.h index 600887e491fd..bf466d1876e3 100644 --- a/arch/arm64/include/asm/numa.h +++ b/arch/arm64/include/asm/numa.h @@ -15,6 +15,8 @@ int __node_distance(int from, int to); extern nodemask_t numa_nodes_parsed __initdata; +extern bool numa_off; + /* Mappings between node number and cpus on that node. */ extern cpumask_var_t node_to_cpumask_map[MAX_NUMNODES]; void numa_clear_node(unsigned int cpu); |