[Qemu-devel] [PATCH V4 02/10] NUMA: Add numa_info structure to contain numa nodes info

[Wanlong Gao]

Add the numa_info structure to contain the numa nodes memory,
VCPUs information and the future added numa nodes host memory
policies.

Signed-off-by: Andre Przywara <address@hidden>
Signed-off-by: Wanlong Gao <address@hidden>
---
 cpus.c                  |  2 +-
 hw/i386/pc.c            |  4 ++--
 hw/net/eepro100.c       |  1 -
 include/sysemu/sysemu.h |  8 ++++++--
 monitor.c               |  2 +-
 vl.c                    | 24 ++++++++++++------------
 6 files changed, 22 insertions(+), 19 deletions(-)

diff --git a/cpus.c b/cpus.c
index 20958e5..496d5ce 100644
--- a/cpus.c
+++ b/cpus.c
@@ -1180,7 +1180,7 @@ void set_numa_modes(void)
     for (env = first_cpu; env != NULL; env = env->next_cpu) {
         cpu = ENV_GET_CPU(env);
         for (i = 0; i < nb_numa_nodes; i++) {
-            if (test_bit(cpu->cpu_index, node_cpumask[i])) {
+            if (test_bit(cpu->cpu_index, numa_info[i].node_cpu)) {
                 cpu->numa_node = i;
             }
         }
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 78f92e2..78b5a72 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -650,14 +650,14 @@ static FWCfgState *bochs_bios_init(void)
         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++) {
-            if (test_bit(i, node_cpumask[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++) {
-        numa_fw_cfg[apic_id_limit + 1 + i] = cpu_to_le64(node_mem[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) *
diff --git a/hw/net/eepro100.c b/hw/net/eepro100.c
index dc99ea6..478c688 100644
--- a/hw/net/eepro100.c
+++ b/hw/net/eepro100.c
@@ -105,7 +105,6 @@
 #define PCI_IO_SIZE             64
 #define PCI_FLASH_SIZE          (128 * KiB)
 
-#define BIT(n) (1 << (n))
 #define BITS(n, m) (((0xffffffffU << (31 - n)) >> (31 - n + m)) << m)
 
 /* The SCB accepts the following controls for the Tx and Rx units: */
diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index 2fb71af..70fd2ed 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -9,6 +9,7 @@
 #include "qapi-types.h"
 #include "qemu/notify.h"
 #include "qemu/main-loop.h"
+#include "qemu/bitmap.h"
 
 /* vl.c */
 
@@ -130,8 +131,11 @@ extern QEMUClock *rtc_clock;
 #define MAX_NODES 64
 #define MAX_CPUMASK_BITS 255
 extern int nb_numa_nodes;
-extern uint64_t node_mem[MAX_NODES];
-extern unsigned long *node_cpumask[MAX_NODES];
+struct node_info {
+    uint64_t node_mem;
+    DECLARE_BITMAP(node_cpu, MAX_CPUMASK_BITS);
+};
+extern struct node_info numa_info[MAX_NODES];
 
 #define MAX_OPTION_ROMS 16
 typedef struct QEMUOptionRom {
diff --git a/monitor.c b/monitor.c
index 9be515c..93ac045 100644
--- a/monitor.c
+++ b/monitor.c
@@ -1820,7 +1820,7 @@ static void do_info_numa(Monitor *mon, const QDict *qdict)
         }
         monitor_printf(mon, "\n");
         monitor_printf(mon, "node %d size: %" PRId64 " MB\n", i,
-            node_mem[i] >> 20);
+            numa_info[i].node_mem >> 20);
     }
 }
 
diff --git a/vl.c b/vl.c
index 6f2e17a..5207b8e 100644
--- a/vl.c
+++ b/vl.c
@@ -250,8 +250,7 @@ static QTAILQ_HEAD(, FWBootEntry) fw_boot_order =
     QTAILQ_HEAD_INITIALIZER(fw_boot_order);
 
 int nb_numa_nodes;
-uint64_t node_mem[MAX_NODES];
-unsigned long *node_cpumask[MAX_NODES];
+struct node_info numa_info[MAX_NODES];
 
 uint8_t qemu_uuid[16];
 
@@ -1367,7 +1366,7 @@ static void numa_node_parse_cpus(int nodenr, const char 
*cpus)
         goto error;
     }
 
-    bitmap_set(node_cpumask[nodenr], value, endvalue-value+1);
+    bitmap_set(numa_info[nodenr].node_cpu, value, endvalue-value+1);
     return;
 
 error:
@@ -1399,7 +1398,7 @@ static int numa_init_func(QemuOpts *opts, void *opaque)
     }
 
     mem_size = qemu_opt_get_size(opts, "mem", 0);
-    node_mem[nodenr] = mem_size;
+    numa_info[nodenr].node_mem = mem_size;
 
     if (qemu_opt_foreach(opts, numa_add_cpus, &nodenr, 1) < 0) {
         return -1;
@@ -2961,8 +2960,8 @@ int main(int argc, char **argv, char **envp)
     translation = BIOS_ATA_TRANSLATION_AUTO;
 
     for (i = 0; i < MAX_NODES; i++) {
-        node_mem[i] = 0;
-        node_cpumask[i] = bitmap_new(MAX_CPUMASK_BITS);
+        numa_info[i].node_mem = 0;
+        bitmap_zero(numa_info[i].node_cpu, MAX_CPUMASK_BITS);
     }
 
     nb_numa_nodes = 0;
@@ -4228,7 +4227,7 @@ int main(int argc, char **argv, char **envp)
          * and distribute the available memory equally across all nodes
          */
         for (i = 0; i < nb_numa_nodes; i++) {
-            if (node_mem[i] != 0)
+            if (numa_info[i].node_mem != 0)
                 break;
         }
         if (i == nb_numa_nodes) {
@@ -4238,14 +4237,15 @@ int main(int argc, char **argv, char **envp)
              * the final node gets the rest.
              */
             for (i = 0; i < nb_numa_nodes - 1; i++) {
-                node_mem[i] = (ram_size / nb_numa_nodes) & ~((1 << 23UL) - 1);
-                usedmem += node_mem[i];
+                numa_info[i].node_mem = (ram_size / nb_numa_nodes) &
+                                        ~((1 << 23UL) - 1);
+                usedmem += numa_info[i].node_mem;
             }
-            node_mem[i] = ram_size - usedmem;
+            numa_info[i].node_mem = ram_size - usedmem;
         }
 
         for (i = 0; i < nb_numa_nodes; i++) {
-            if (!bitmap_empty(node_cpumask[i], MAX_CPUMASK_BITS)) {
+            if (!bitmap_empty(numa_info[i].node_cpu, MAX_CPUMASK_BITS)) {
                 break;
             }
         }
@@ -4255,7 +4255,7 @@ int main(int argc, char **argv, char **envp)
          */
         if (i == nb_numa_nodes) {
             for (i = 0; i < max_cpus; i++) {
-                set_bit(i, node_cpumask[i % nb_numa_nodes]);
+                set_bit(i, numa_info[i % nb_numa_nodes].node_cpu);
             }
         }
     }
-- 
1.8.3.2.634.g7a3187e