/arch/alpha/include/asm/topology.h

http://github.com/mirrors/linux · C Header · 51 lines · 35 code · 14 blank · 2 comment · 5 complexity · f2ce8c751635b507b2bc87e23847f4a3 MD5 · raw file 

    

  1. /* SPDX-License-Identifier: GPL-2.0 */
    2. 

  2. #ifndef _ASM_ALPHA_TOPOLOGY_H
    3. 

  3. #define _ASM_ALPHA_TOPOLOGY_H
    4. 

  4. 

  5. #include <linux/smp.h>
    6. 

  6. #include <linux/threads.h>
    7. 

  7. #include <linux/numa.h>
    8. 

  8. #include <asm/machvec.h>
    9. 

  9. 

  10. #ifdef CONFIG_NUMA
    11. 

  11. static inline int cpu_to_node(int cpu)
    12. 

  12. {
    13. 

  13. 	int node;
    14. 

  14. 	
    15. 

  15. 	if (!alpha_mv.cpuid_to_nid)
    16. 

  16. 		return 0;
    17. 

  17. 

  18. 	node = alpha_mv.cpuid_to_nid(cpu);
    19. 

  19. 

  20. #ifdef DEBUG_NUMA
    21. 

  21. 	BUG_ON(node < 0);
    22. 

  22. #endif
    23. 

  23. 

  24. 	return node;
    25. 

  25. }
    26. 

  26. 

  27. extern struct cpumask node_to_cpumask_map[];
    28. 

  28. /* FIXME: This is dumb, recalculating every time.  But simple. */
    29. 

  29. static const struct cpumask *cpumask_of_node(int node)
    30. 

  30. {
    31. 

  31. 	int cpu;
    32. 

  32. 

  33. 	if (node == NUMA_NO_NODE)
    34. 

  34. 		return cpu_all_mask;
    35. 

  35. 

  36. 	cpumask_clear(&node_to_cpumask_map[node]);
    37. 

  37. 

  38. 	for_each_online_cpu(cpu) {
    39. 

  39. 		if (cpu_to_node(cpu) == node)
    40. 

  40. 			cpumask_set_cpu(cpu, node_to_cpumask_map[node]);
    41. 

  41. 	}
    42. 

  42. 

  43. 	return &node_to_cpumask_map[node];
    44. 

  44. }
    45. 

  45. 

  46. #define cpumask_of_pcibus(bus)	(cpu_online_mask)
    47. 

  47. 

  48. #endif /* !CONFIG_NUMA */
    49. 

  49. # include <asm-generic/topology.h>
    50. 

  50. 

  51. #endif /* _ASM_ALPHA_TOPOLOGY_H */
    52.