cpumask: Use find_last_bit()
Impact: cleanup
There's one obvious place to use it: to find the highest possible cpu.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
diff --git a/init/main.c b/init/main.c
index 84d3732..546ebd2 100644
--- a/init/main.c
+++ b/init/main.c
@@ -380,12 +380,7 @@
/* An arch may set nr_cpu_ids earlier if needed, so this would be redundant */
static void __init setup_nr_cpu_ids(void)
{
- int cpu, highest_cpu = 0;
-
- for_each_possible_cpu(cpu)
- highest_cpu = cpu;
-
- nr_cpu_ids = highest_cpu + 1;
+ nr_cpu_ids = find_last_bit(cpumask_bits(cpu_possible_mask),NR_CPUS) + 1;
}
#ifndef CONFIG_HAVE_SETUP_PER_CPU_AREA