From: Rusty Russell <rusty@rustcorp.com.au>
Date: Wed, 31 Dec 2008 23:42:19 +0000 (+1030)
Subject: cpumask: Use find_last_bit()
X-Git-Tag: v2.6.29-rc1~521^2~11^2~20
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=e0c0ba736547e81c4f986ce192307c549d214167;p=linux-2.6-omap-h63xx.git

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 84d3732c0ce..546ebd2f44b 100644
--- a/init/main.c
+++ b/init/main.c
@@ -380,12 +380,7 @@ EXPORT_SYMBOL(nr_cpu_ids);
 /* 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