From: Mike Travis Date: Tue, 15 Jul 2008 21:14:35 +0000 (-0700) Subject: cpumask: Optimize cpumask_of_cpu in lib/smp_processor_id.c X-Git-Tag: v2.6.27-rc1~848^2~12 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=4755b9291204982ac908e069674d6e5eb45815b3;p=linux-2.6-omap-h63xx.git cpumask: Optimize cpumask_of_cpu in lib/smp_processor_id.c * Optimize various places where a pointer to the cpumask_of_cpu value will result in reducing stack pressure. Signed-off-by: Mike Travis Signed-off-by: Ingo Molnar --- diff --git a/lib/smp_processor_id.c b/lib/smp_processor_id.c index 3b4dc098181..9fb2df0d8df 100644 --- a/lib/smp_processor_id.c +++ b/lib/smp_processor_id.c @@ -11,7 +11,7 @@ notrace unsigned int debug_smp_processor_id(void) { unsigned long preempt_count = preempt_count(); int this_cpu = raw_smp_processor_id(); - cpumask_t this_mask; + cpumask_of_cpu_ptr_declare(this_mask); if (likely(preempt_count)) goto out; @@ -23,9 +23,9 @@ notrace unsigned int debug_smp_processor_id(void) * Kernel threads bound to a single CPU can safely use * smp_processor_id(): */ - this_mask = cpumask_of_cpu(this_cpu); + cpumask_of_cpu_ptr_next(this_mask, cpu); - if (cpus_equal(current->cpus_allowed, this_mask)) + if (cpus_equal(current->cpus_allowed, *this_mask)) goto out; /*