x86: get rid of cpucount

weighting a map will do.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/smpboot_32.c b/arch/x86/kernel/smpboot_32.c
index 2fea910..5c4e85c 100644 (file)
--- a/arch/x86/kernel/smpboot_32.c
+++ b/arch/x86/kernel/smpboot_32.c
@@ -166,8 +166,6 @@ static void __cpuinit smp_callin(void)
        cpu_set(cpuid, cpu_callin_map);
 }
 
-static int cpucount;
-
 /*
  * Activate a secondary processor.
  */
@@ -585,7 +583,6 @@ static int __cpuinit do_boot_cpu(int apicid, int cpu)
        /* start_eip had better be page-aligned! */
        start_eip = setup_trampoline();
 
-       ++cpucount;
        alternatives_smp_switch(1);
 
        /* So we see what's up   */
@@ -656,7 +653,6 @@ static int __cpuinit do_boot_cpu(int apicid, int cpu)
                cpu_clear(cpu, cpu_initialized); /* was set by cpu_init() */
                cpu_clear(cpu, cpu_possible_map);
                per_cpu(x86_cpu_to_apicid, cpu) = BAD_APICID;
-               cpucount--;
        }
 
        /* mark "stuck" area as not stuck */
@@ -672,7 +668,6 @@ void cpu_exit_clear(void)
 
        idle_task_exit();
 
-       cpucount --;
        cpu_uninit();
        irq_ctx_exit(cpu);
 
@@ -795,7 +790,6 @@ static int __init smp_sanity_check(unsigned max_cpus)
        return 0;
 }
 
-
 /*
  * Cycle through the processors sending APIC IPIs to boot each.
  */
@@ -851,7 +845,7 @@ static void __init smp_boot_cpus(unsigned int max_cpus)
 
                if (!check_apicid_present(bit))
                        continue;
-               if (max_cpus <= cpucount+1)
+               if (max_cpus <= cpus_weight(cpu_present_map))
                        continue;
                /* Utterly temporary */
                for (cpu = 0; cpu < NR_CPUS; cpu++)
@@ -878,7 +872,7 @@ static void __init smp_boot_cpus(unsigned int max_cpus)
                        bogosum += cpu_data(cpu).loops_per_jiffy;
        printk(KERN_INFO
                "Total of %d processors activated (%lu.%02lu BogoMIPS).\n",
-               cpucount+1,
+               cpus_weight(cpu_present_map),
                bogosum/(500000/HZ),
                (bogosum/(5000/HZ))%100);
        
@@ -892,7 +886,7 @@ static void __init smp_boot_cpus(unsigned int max_cpus)
         * approved Athlon
         */
        if (tainted & TAINT_UNSAFE_SMP) {
-               if (cpucount)
+               if (cpus_weight(cpu_present_map))
                        printk (KERN_INFO "WARNING: This combination of AMD processors is not suitable for SMP.\n");
                else
                        tainted &= ~TAINT_UNSAFE_SMP;