Re: [Qemu-devel] [PATCH 1/2] Rename nb_numa_nodes to num_numa_nodes

["Michael S. Tsirkin" <mst@redhat.com>]

On Tue, Jul 01, 2014 at 01:11:08PM -0700, Nishanth Aravamudan wrote:
> As suggested by Eduardo Habkost, rename nb_numa_nodes to num_numa_nodes
> throughout the code, as that reflects the use of the variable more
> clearly.
> 
> Signed-off-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>

So far so good but we are past soft freeze.  So please keep reposting as
RFC to avoid noise, and repost without RFC tag after 2.1 is out.


> diff --git a/hw/i386/pc.c b/hw/i386/pc.c
> index 2cf22b1..12472c6 100644
> --- a/hw/i386/pc.c
> +++ b/hw/i386/pc.c
> @@ -698,23 +698,23 @@ static FWCfgState *bochs_bios_init(void)
>       * of nodes, one word for each VCPU->node and one word for each node to
>       * hold the amount of memory.
>       */
> -    numa_fw_cfg = g_new0(uint64_t, 1 + apic_id_limit + nb_numa_nodes);
> -    numa_fw_cfg[0] = cpu_to_le64(nb_numa_nodes);
> +    numa_fw_cfg = g_new0(uint64_t, 1 + apic_id_limit + num_numa_nodes);
> +    numa_fw_cfg[0] = cpu_to_le64(num_numa_nodes);
>      for (i = 0; i < max_cpus; i++) {
>          unsigned int apic_id = x86_cpu_apic_id_from_index(i);
>          assert(apic_id < apic_id_limit);
> -        for (j = 0; j < nb_numa_nodes; j++) {
> +        for (j = 0; j < num_numa_nodes; j++) {
>              if (test_bit(i, numa_info[j].node_cpu)) {
>                  numa_fw_cfg[apic_id + 1] = cpu_to_le64(j);
>                  break;
>              }
>          }
>      }
> -    for (i = 0; i < nb_numa_nodes; i++) {
> +    for (i = 0; i < num_numa_nodes; i++) {
>          numa_fw_cfg[apic_id_limit + 1 + i] = cpu_to_le64(numa_info[i].node_mem);
>      }
>      fw_cfg_add_bytes(fw_cfg, FW_CFG_NUMA, numa_fw_cfg,
> -                     (1 + apic_id_limit + nb_numa_nodes) *
> +                     (1 + apic_id_limit + num_numa_nodes) *
>                       sizeof(*numa_fw_cfg));
>  
>      return fw_cfg;
> @@ -1121,10 +1121,10 @@ PcGuestInfo *pc_guest_info_init(ram_addr_t below_4g_mem_size,
>      guest_info->ram_size = below_4g_mem_size + above_4g_mem_size;
>      guest_info->apic_id_limit = pc_apic_id_limit(max_cpus);
>      guest_info->apic_xrupt_override = kvm_allows_irq0_override();
> -    guest_info->numa_nodes = nb_numa_nodes;
> +    guest_info->numa_nodes = num_numa_nodes;
>      guest_info->node_mem = g_malloc0(guest_info->numa_nodes *
>                                      sizeof *guest_info->node_mem);
> -    for (i = 0; i < nb_numa_nodes; i++) {
> +    for (i = 0; i < num_numa_nodes; i++) {
>          guest_info->node_mem[i] = numa_info[i].node_mem;
>      }
>  
> @@ -1134,7 +1134,7 @@ PcGuestInfo *pc_guest_info_init(ram_addr_t below_4g_mem_size,
>      for (i = 0; i < max_cpus; i++) {
>          unsigned int apic_id = x86_cpu_apic_id_from_index(i);
>          assert(apic_id < guest_info->apic_id_limit);
> -        for (j = 0; j < nb_numa_nodes; j++) {
> +        for (j = 0; j < num_numa_nodes; j++) {
>              if (test_bit(i, numa_info[j].node_cpu)) {
>                  guest_info->node_cpu[apic_id] = j;
>                  break;
> diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
> index a8ba916..4b74fd6 100644
> --- a/hw/ppc/spapr.c
> +++ b/hw/ppc/spapr.c
> @@ -226,7 +226,7 @@ static int spapr_fixup_cpu_dt(void *fdt, sPAPREnvironment *spapr)
>              }
>          }
>  
> -        if (nb_numa_nodes > 1) {
> +        if (num_numa_nodes > 1) {
>              ret = fdt_setprop(fdt, offset, "ibm,associativity", associativity,
>                                sizeof(associativity));
>              if (ret < 0) {
> @@ -608,7 +608,7 @@ static int spapr_populate_memory(sPAPREnvironment *spapr, void *fdt)
>      int i, off;
>  
>      /* memory node(s) */
> -    if (nb_numa_nodes > 1 && numa_info[0].node_mem < ram_size) {
> +    if (num_numa_nodes > 1 && numa_info[0].node_mem < ram_size) {
>          node0_size = numa_info[0].node_mem;
>      } else {
>          node0_size = ram_size;
> @@ -642,7 +642,7 @@ static int spapr_populate_memory(sPAPREnvironment *spapr, void *fdt)
>  
>      /* RAM: Node 1 and beyond */
>      mem_start = node0_size;
> -    for (i = 1; i < nb_numa_nodes; i++) {
> +    for (i = 1; i < num_numa_nodes; i++) {
>          mem_reg_property[0] = cpu_to_be64(mem_start);
>          if (mem_start >= ram_size) {
>              node_size = 0;
> @@ -792,7 +792,7 @@ static void spapr_reset_htab(sPAPREnvironment *spapr)
>  
>      /* Update the RMA size if necessary */
>      if (spapr->vrma_adjust) {
> -        hwaddr node0_size = (nb_numa_nodes > 1) ?
> +        hwaddr node0_size = (num_numa_nodes > 1) ?
>              numa_info[0].node_mem : ram_size;
>          spapr->rma_size = kvmppc_rma_size(node0_size, spapr->htab_shift);
>      }
> @@ -1225,7 +1225,7 @@ static void ppc_spapr_init(MachineState *machine)
>      MemoryRegion *sysmem = get_system_memory();
>      MemoryRegion *ram = g_new(MemoryRegion, 1);
>      hwaddr rma_alloc_size;
> -    hwaddr node0_size = (nb_numa_nodes > 1) ? numa_info[0].node_mem : ram_size;
> +    hwaddr node0_size = (num_numa_nodes > 1) ? numa_info[0].node_mem : ram_size;
>      uint32_t initrd_base = 0;
>      long kernel_size = 0, initrd_size = 0;
>      long load_limit, rtas_limit, fw_size;
> diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
> index d8539fd..d17bdbe 100644
> --- a/include/sysemu/sysemu.h
> +++ b/include/sysemu/sysemu.h
> @@ -146,7 +146,7 @@ extern int mem_prealloc;
>   */
>  #define MAX_CPUMASK_BITS 255
>  
> -extern int nb_numa_nodes;   /* Number of NUMA nodes */
> +extern int num_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
>                               */
> diff --git a/monitor.c b/monitor.c
> index 5bc70a6..392677a 100644
> --- a/monitor.c
> +++ b/monitor.c
> @@ -1948,8 +1948,8 @@ static void do_info_numa(Monitor *mon, const QDict *qdict)
>      int i;
>      CPUState *cpu;
>  
> -    monitor_printf(mon, "%d nodes\n", nb_numa_nodes);
> -    for (i = 0; i < nb_numa_nodes; i++) {
> +    monitor_printf(mon, "%d nodes\n", num_numa_nodes);
> +    for (i = 0; i < num_numa_nodes; i++) {
>          monitor_printf(mon, "node %d cpus:", i);
>          CPU_FOREACH(cpu) {
>              if (cpu->numa_node == i) {
> diff --git a/numa.c b/numa.c
> index 2fde740..5930df0 100644
> --- a/numa.c
> +++ b/numa.c
> @@ -53,7 +53,7 @@ static void numa_node_parse(NumaNodeOptions *node, QemuOpts *opts, Error **errp)
>      if (node->has_nodeid) {
>          nodenr = node->nodeid;
>      } else {
> -        nodenr = nb_numa_nodes;
> +        nodenr = num_numa_nodes;
>      }
>  
>      if (nodenr >= MAX_NODES) {
> @@ -136,7 +136,7 @@ int numa_init_func(QemuOpts *opts, void *opaque)
>          if (err) {
>              goto error;
>          }
> -        nb_numa_nodes++;
> +        num_numa_nodes++;
>          break;
>      default:
>          abort();
> @@ -174,31 +174,31 @@ void set_numa_nodes(void)
>      }
>  
>      /* This must be always true if all nodes are present: */
> -    assert(nb_numa_nodes == max_numa_nodeid);
> +    assert(num_numa_nodes == max_numa_nodeid);
>  
> -    if (nb_numa_nodes > 0) {
> +    if (num_numa_nodes > 0) {
>          uint64_t numa_total;
>  
> -        if (nb_numa_nodes > MAX_NODES) {
> -            nb_numa_nodes = MAX_NODES;
> +        if (num_numa_nodes > MAX_NODES) {
> +            num_numa_nodes = MAX_NODES;
>          }
>  
>          /* If no memory size is given for any node, assume the default case
>           * and distribute the available memory equally across all nodes
>           */
> -        for (i = 0; i < nb_numa_nodes; i++) {
> +        for (i = 0; i < num_numa_nodes; i++) {
>              if (numa_info[i].node_mem != 0) {
>                  break;
>              }
>          }
> -        if (i == nb_numa_nodes) {
> +        if (i == num_numa_nodes) {
>              uint64_t usedmem = 0;
>  
>              /* On Linux, each node's border has to be 8MB aligned,
>               * the final node gets the rest.
>               */
> -            for (i = 0; i < nb_numa_nodes - 1; i++) {
> -                numa_info[i].node_mem = (ram_size / nb_numa_nodes) &
> +            for (i = 0; i < num_numa_nodes - 1; i++) {
> +                numa_info[i].node_mem = (ram_size / num_numa_nodes) &
>                                          ~((1 << 23UL) - 1);
>                  usedmem += numa_info[i].node_mem;
>              }
> @@ -206,7 +206,7 @@ void set_numa_nodes(void)
>          }
>  
>          numa_total = 0;
> -        for (i = 0; i < nb_numa_nodes; i++) {
> +        for (i = 0; i < num_numa_nodes; i++) {
>              numa_total += numa_info[i].node_mem;
>          }
>          if (numa_total != ram_size) {
> @@ -216,7 +216,7 @@ void set_numa_nodes(void)
>              exit(1);
>          }
>  
> -        for (i = 0; i < nb_numa_nodes; i++) {
> +        for (i = 0; i < num_numa_nodes; i++) {
>              if (!bitmap_empty(numa_info[i].node_cpu, MAX_CPUMASK_BITS)) {
>                  break;
>              }
> @@ -225,9 +225,9 @@ void set_numa_nodes(void)
>           * must cope with this anyway, because there are BIOSes out there in
>           * real machines which also use this scheme.
>           */
> -        if (i == nb_numa_nodes) {
> +        if (i == num_numa_nodes) {
>              for (i = 0; i < max_cpus; i++) {
> -                set_bit(i, numa_info[i % nb_numa_nodes].node_cpu);
> +                set_bit(i, numa_info[i % num_numa_nodes].node_cpu);
>              }
>          }
>      }
> @@ -239,7 +239,7 @@ void set_numa_modes(void)
>      int i;
>  
>      CPU_FOREACH(cpu) {
> -        for (i = 0; i < nb_numa_nodes; i++) {
> +        for (i = 0; i < num_numa_nodes; i++) {
>              if (test_bit(cpu->cpu_index, numa_info[i].node_cpu)) {
>                  cpu->numa_node = i;
>              }
> @@ -282,7 +282,7 @@ void memory_region_allocate_system_memory(MemoryRegion *mr, Object *owner,
>      uint64_t addr = 0;
>      int i;
>  
> -    if (nb_numa_nodes == 0 || !have_memdevs) {
> +    if (num_numa_nodes == 0 || !have_memdevs) {
>          allocate_system_memory_nonnuma(mr, owner, name, ram_size);
>          return;
>      }
> diff --git a/vl.c b/vl.c
> index 6e084c2..0de54c5 100644
> --- a/vl.c
> +++ b/vl.c
> @@ -195,7 +195,7 @@ struct FWBootEntry {
>  static QTAILQ_HEAD(, FWBootEntry) fw_boot_order =
>      QTAILQ_HEAD_INITIALIZER(fw_boot_order);
>  
> -int nb_numa_nodes;
> +int num_numa_nodes;
>  int max_numa_nodeid;
>  NodeInfo numa_info[MAX_NODES];
>  
> @@ -2991,7 +2991,7 @@ int main(int argc, char **argv, char **envp)
>          bitmap_zero(numa_info[i].node_cpu, MAX_CPUMASK_BITS);
>      }
>  
> -    nb_numa_nodes = 0;
> +    num_numa_nodes = 0;
>      max_numa_nodeid = 0;
>      nb_nics = 0;
>