1 /*
   2  * This file and its contents are supplied under the terms of the
   3  * Common Development and Distribution License ("CDDL"), version 1.0.
   4  * You may only use this file in accordance with the terms of version
   5  * 1.0 of the CDDL.
   6  *
   7  * A full copy of the text of the CDDL should have accompanied this
   8  * source.  A copy of the CDDL is also available via the Internet at
   9  * http://www.illumos.org/license/CDDL.
  10  */
  11 
  12 /*
  13  * Copyright (c) 2018, Joyent, Inc.
  14  */
  15 
  16 #include <sys/cpu_uarray.h>
  17 #include <sys/sysmacros.h>
  18 #include <sys/cpuvar.h>
  19 #include <sys/debug.h>
  20 #include <sys/kmem.h>
  21 
  22 static size_t
  23 cpu_uarray_size(size_t nr_items)
  24 {
  25         size_t size = P2ROUNDUP(nr_items * sizeof (uint64_t), CUA_ALIGN);
  26         size *= NCPU;
  27         return (sizeof (cpu_uarray_t) + size);
  28 }
  29 
  30 cpu_uarray_t *
  31 cpu_uarray_zalloc(size_t nr_items, int kmflags)
  32 {
  33         cpu_uarray_t *cua;
  34 
  35         cua = kmem_zalloc(cpu_uarray_size(nr_items), kmflags);
  36 
  37         if (cua != NULL) {
  38                 VERIFY(IS_P2ALIGNED(cua->cu_vals, CUA_ALIGN));
  39                 cua->cu_nr_items = nr_items;
  40         }
  41 
  42         return (cua);
  43 }
  44 
  45 void
  46 cpu_uarray_free(cpu_uarray_t *cua)
  47 {

  48         kmem_free(cua, cpu_uarray_size(cua->cu_nr_items));
  49 }
  50 
  51 uint64_t
  52 cpu_uarray_sum(cpu_uarray_t *cua, size_t index)
  53 {
  54         uint64_t sum = 0;
  55 
  56         VERIFY3U(index, <, cua->cu_nr_items);
  57 
  58         for (size_t c = 0; c < ncpus; c++) {
  59                 uint64_t addend = CPU_UARRAY_VAL(cua, c, index);
  60                 sum = UINT64_OVERFLOW_ADD(sum, addend);
  61         }
  62 
  63         return (sum);
  64 }
  65 
  66 uint64_t
  67 cpu_uarray_sum_all(cpu_uarray_t *cua)

   1 /*
   2  * This file and its contents are supplied under the terms of the
   3  * Common Development and Distribution License ("CDDL"), version 1.0.
   4  * You may only use this file in accordance with the terms of version
   5  * 1.0 of the CDDL.
   6  *
   7  * A full copy of the text of the CDDL should have accompanied this
   8  * source.  A copy of the CDDL is also available via the Internet at
   9  * http://www.illumos.org/license/CDDL.
  10  */
  11 
  12 /*
  13  * Copyright 2019 Joyent, Inc.
  14  */
  15 
  16 #include <sys/cpu_uarray.h>
  17 #include <sys/sysmacros.h>
  18 #include <sys/cpuvar.h>
  19 #include <sys/debug.h>
  20 #include <sys/kmem.h>
  21 
  22 static size_t
  23 cpu_uarray_size(size_t nr_items)
  24 {
  25         size_t size = P2ROUNDUP(nr_items * sizeof (uint64_t), CUA_ALIGN);
  26         size *= NCPU;
  27         return (sizeof (cpu_uarray_t) + size);
  28 }
  29 
  30 cpu_uarray_t *
  31 cpu_uarray_zalloc(size_t nr_items, int kmflags)
  32 {
  33         cpu_uarray_t *cua;
  34 
  35         cua = kmem_zalloc(cpu_uarray_size(nr_items), kmflags);
  36 
  37         if (cua != NULL) {
  38                 VERIFY(IS_P2ALIGNED(cua->cu_vals, CUA_ALIGN));
  39                 cua->cu_nr_items = nr_items;
  40         }
  41 
  42         return (cua);
  43 }
  44 
  45 void
  46 cpu_uarray_free(cpu_uarray_t *cua)
  47 {
  48         if (cua != NULL)
  49                 kmem_free(cua, cpu_uarray_size(cua->cu_nr_items));
  50 }
  51 
  52 uint64_t
  53 cpu_uarray_sum(cpu_uarray_t *cua, size_t index)
  54 {
  55         uint64_t sum = 0;
  56 
  57         VERIFY3U(index, <, cua->cu_nr_items);
  58 
  59         for (size_t c = 0; c < ncpus; c++) {
  60                 uint64_t addend = CPU_UARRAY_VAL(cua, c, index);
  61                 sum = UINT64_OVERFLOW_ADD(sum, addend);
  62         }
  63 
  64         return (sum);
  65 }
  66 
  67 uint64_t
  68 cpu_uarray_sum_all(cpu_uarray_t *cua)