* [PATCH 02/32] powerpc/cell: use system_wq in cpufreq_spudemand
[not found] <1294062595-30097-1-git-send-email-tj@kernel.org>
@ 2011-01-03 13:49 ` Tejun Heo
0 siblings, 0 replies; only message in thread
From: Tejun Heo @ 2011-01-03 13:49 UTC (permalink / raw)
To: linux-kernel; +Cc: Tejun Heo, Dave Jones, linuxppc-dev, cpufreq, Arnd Bergmann
With cmwq, there's no reason to use a separate workqueue in
cpufreq_spudemand. Use system_wq instead. The work items are already
sync canceled on stop, so it's already guaranteed that no work is
running when spu_gov_exit() is entered.
Signed-off-by: Tejun Heo <tj@kernel•org>
Cc: Arnd Bergmann <arnd@arndb•de>
Cc: linuxppc-dev@lists•ozlabs.org
Cc: Dave Jones <davej@redhat•com>
Cc: cpufreq@vger•kernel.org
---
Only compile tested. Please feel free to take it into the subsystem
tree or simply ack - I'll route it through the wq tree.
Thanks.
arch/powerpc/platforms/cell/cpufreq_spudemand.c | 20 +++-----------------
1 files changed, 3 insertions(+), 17 deletions(-)
diff --git a/arch/powerpc/platforms/cell/cpufreq_spudemand.c b/arch/powerpc/platforms/cell/cpufreq_spudemand.c
index 968c1c0..d809836 100644
--- a/arch/powerpc/platforms/cell/cpufreq_spudemand.c
+++ b/arch/powerpc/platforms/cell/cpufreq_spudemand.c
@@ -39,8 +39,6 @@ struct spu_gov_info_struct {
};
static DEFINE_PER_CPU(struct spu_gov_info_struct, spu_gov_info);
-static struct workqueue_struct *kspugov_wq;
-
static int calc_freq(struct spu_gov_info_struct *info)
{
int cpu;
@@ -71,14 +69,14 @@ static void spu_gov_work(struct work_struct *work)
__cpufreq_driver_target(info->policy, target_freq, CPUFREQ_RELATION_H);
delay = usecs_to_jiffies(info->poll_int);
- queue_delayed_work_on(info->policy->cpu, kspugov_wq, &info->work, delay);
+ schedule_delayed_work_on(info->policy->cpu, &info->work, delay);
}
static void spu_gov_init_work(struct spu_gov_info_struct *info)
{
int delay = usecs_to_jiffies(info->poll_int);
INIT_DELAYED_WORK_DEFERRABLE(&info->work, spu_gov_work);
- queue_delayed_work_on(info->policy->cpu, kspugov_wq, &info->work, delay);
+ schedule_delayed_work_on(info->policy->cpu, &info->work, delay);
}
static void spu_gov_cancel_work(struct spu_gov_info_struct *info)
@@ -152,27 +150,15 @@ static int __init spu_gov_init(void)
{
int ret;
- kspugov_wq = create_workqueue("kspugov");
- if (!kspugov_wq) {
- printk(KERN_ERR "creation of kspugov failed\n");
- ret = -EFAULT;
- goto out;
- }
-
ret = cpufreq_register_governor(&spu_governor);
- if (ret) {
+ if (ret)
printk(KERN_ERR "registration of governor failed\n");
- destroy_workqueue(kspugov_wq);
- goto out;
- }
-out:
return ret;
}
static void __exit spu_gov_exit(void)
{
cpufreq_unregister_governor(&spu_governor);
- destroy_workqueue(kspugov_wq);
}
--
1.7.1
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2011-01-03 13:49 ` [PATCH 02/32] powerpc/cell: use system_wq in cpufreq_spudemand Tejun Heo
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