From 8630282070b4a52b12cfa514ba8558e2f3d56360 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Sat, 25 Mar 2006 03:08:09 -0800 Subject: [PATCH] cpumask: uninline highest_possible_processor_id() Shrinks the only caller (net/bridge/netfilter/ebtables.c) by 174 bytes. Also, optimise highest_possible_processor_id() out of existence on CONFIG_SMP=n. Cc: Paul Jackson Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/cpumask.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'lib/cpumask.c') diff --git a/lib/cpumask.c b/lib/cpumask.c index ba2f8543052c..ea25a034276c 100644 --- a/lib/cpumask.c +++ b/lib/cpumask.c @@ -14,3 +14,20 @@ int __next_cpu(int n, const cpumask_t *srcp) return min_t(int, NR_CPUS, find_next_bit(srcp->bits, NR_CPUS, n+1)); } EXPORT_SYMBOL(__next_cpu); + +/* + * Find the highest possible smp_processor_id() + * + * Note: if we're prepared to assume that cpu_possible_map never changes + * (reasonable) then this function should cache its return value. + */ +int highest_possible_processor_id(void) +{ + unsigned int cpu; + unsigned highest = 0; + + for_each_cpu_mask(cpu, cpu_possible_map) + highest = cpu; + return highest; +} +EXPORT_SYMBOL(highest_possible_processor_id); -- cgit v1.2.3-59-g8ed1b