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Date: Mon, 9 Mar 2009 14:43:59 +1030 From: Rusty Russell <rusty@...tcorp.com.au> To: Andy Henroid <andrew.d.henroid@...el.com> Cc: linux-kernel@...r.kernel.org Subject: [PATCH] cpumask: convert drivers/idle/i7300_idle.c to cpumask_var_t Impact: use new API Fairly simple transformation: 1) cpumask_t -> cpumask_var_t and alloc_cpumask_var/free_cpumask_var (which are a NOOP unless CONFIG_CPUMASK_OFFSTACK=y). 2) cpu_set -> cpumask_set_cpu 3) cpus_weight -> cpumask_weight 4) cpu_clear -> cpumask_clear_cpu Signed-off-by: Rusty Russell <rusty@...tcorp.com.au> To: Andy Henroid <andrew.d.henroid@...el.com> --- drivers/idle/i7300_idle.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/idle/i7300_idle.c b/drivers/idle/i7300_idle.c --- a/drivers/idle/i7300_idle.c +++ b/drivers/idle/i7300_idle.c @@ -77,7 +77,7 @@ static u8 i7300_idle_thrtlow_saved; static u8 i7300_idle_thrtlow_saved; static u32 i7300_idle_mc_saved; -static cpumask_t idle_cpumask; +static cpumask_var_t idle_cpumask; static ktime_t start_ktime; static unsigned long avg_idle_us; @@ -455,9 +455,9 @@ static int i7300_idle_notifier(struct no spin_lock_irqsave(&i7300_idle_lock, flags); if (val == IDLE_START) { - cpu_set(smp_processor_id(), idle_cpumask); + cpumask_set_cpu(smp_processor_id(), idle_cpumask); - if (cpus_weight(idle_cpumask) != num_online_cpus()) + if (cpumask_weight(idle_cpumask) != num_online_cpus()) goto end; now_ktime = ktime_get(); @@ -474,8 +474,8 @@ static int i7300_idle_notifier(struct no i7300_idle_ioat_start(); } else if (val == IDLE_END) { - cpu_clear(smp_processor_id(), idle_cpumask); - if (cpus_weight(idle_cpumask) == (num_online_cpus() - 1)) { + cpumask_clear_cpu(smp_processor_id(), idle_cpumask); + if (cpumask_weight(idle_cpumask) == (num_online_cpus() - 1)) { /* First CPU coming out of idle */ u64 idle_duration_us; @@ -549,7 +549,6 @@ static int __init i7300_idle_init(void) static int __init i7300_idle_init(void) { spin_lock_init(&i7300_idle_lock); - cpus_clear(idle_cpumask); total_us = 0; if (i7300_idle_platform_probe(&fbd_dev, &ioat_dev)) @@ -560,6 +559,10 @@ static int __init i7300_idle_init(void) if (i7300_idle_ioat_init()) return -ENODEV; + + if (!alloc_cpumask_var(&idle_cpumask, GFP_KERNEL)) + return -ENOMEM; + cpumask_clear(idle_cpumask); debugfs_dir = debugfs_create_dir("i7300_idle", NULL); if (debugfs_dir) { @@ -585,6 +587,7 @@ static void __exit i7300_idle_exit(void) static void __exit i7300_idle_exit(void) { idle_notifier_unregister(&i7300_idle_nb); + free_cpumask_var(idle_cpumask); if (debugfs_dir) { int i = 0; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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