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numa: Keep track of NUMA nodes present on the command-line

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Based on "enable sparse node numbering" patch from Nishanth Aravamudan,
but without the code to actually support sparse node IDs. This just adds
the code to keep track of present/non-present nodes on the command-line,
without changing any behavior.

Signed-off-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
[Rename max_numa_node to max_numa_nodeid -Eduardo]
[Initialize max_numa_nodeid to 0 -Eduardo]
[Use MAX() macro when setting max_numa_nodeid -Eduardo]
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Hu Tao <hutao@cn.fujitsu.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Eduardo Habkost 2014-06-26 18:33:18 -03:00 • committed by Michael S. Tsirkin
parent 2f5732e964
commit 1af878e049
3 changed files with 11 additions and 1 deletions
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7
include/sysemu/sysemu.h
View file

@ -146,11 +146,16 @@ extern int mem_prealloc;
*/
#define MAX_CPUMASK_BITS 255
extern int nb_numa_nodes;
extern int nb_numa_nodes; /* Number of NUMA nodes */
extern int max_numa_nodeid; /* Highest specified NUMA node ID, plus one.
* For all nodes, nodeid < max_numa_nodeid
*/
typedef struct node_info {
uint64_t node_mem;
DECLARE_BITMAP(node_cpu, MAX_CPUMASK_BITS);
struct HostMemoryBackend *node_memdev;
bool present;
} NodeInfo;
extern NodeInfo numa_info[MAX_NODES];
void set_numa_nodes(void);