From: Rusty Russell <rusty@rustcorp.com.au>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@redhat.com>, Mike Travis <travis@sgi.com>
Subject: [PATCH 6/6] cpumask: Use find_last_bit()
Date: Mon, 1 Dec 2008 18:48:49 +1030 [thread overview]
Message-ID: <200812011848.50126.rusty@rustcorp.com.au> (raw)
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>
---
init/main.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
diff -r 911f0f14f90b init/main.c
--- a/init/main.c Fri Nov 07 16:28:47 2008 +1100
+++ b/init/main.c Fri Nov 07 16:29:00 2008 +1100
@@ -379,12 +379,7 @@ 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
reply other threads:[~2008-12-01 8:19 UTC|newest]
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