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IB/ehca: Make scaling code work without CPU hotplug

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eHCA scaling code must not depend on register_cpu_notifier() if
CONFIG_HOTPLUG_CPU is not set, so put all related code into #ifdefs.

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Joachim Fenkes 2007-03-22 16:52:13 +01:00 committed by Roland Dreier
parent d601347188
commit 73b9e9870f
1 changed files with 8 additions and 0 deletions
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8
drivers/infiniband/hw/ehca/ehca_irq.c
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@ -66,7 +66,9 @@
static void queue_comp_task(struct ehca_cq *__cq);
static struct ehca_comp_pool* pool;
#ifdef CONFIG_HOTPLUG_CPU
static struct notifier_block comp_pool_callback_nb;
#endif
static inline void comp_event_callback(struct ehca_cq *cq)
{
@ -733,6 +735,7 @@ static void take_over_work(struct ehca_comp_pool *pool,
}
#ifdef CONFIG_HOTPLUG_CPU
static int comp_pool_callback(struct notifier_block *nfb,
unsigned long action,
void *hcpu)
@ -775,6 +778,7 @@ static int comp_pool_callback(struct notifier_block *nfb,
return NOTIFY_OK;
}
#endif
int ehca_create_comp_pool(void)
{
@ -805,9 +809,11 @@ int ehca_create_comp_pool(void)
}
}
#ifdef CONFIG_HOTPLUG_CPU
comp_pool_callback_nb.notifier_call = comp_pool_callback;
comp_pool_callback_nb.priority =0;
register_cpu_notifier(&comp_pool_callback_nb);
#endif
printk(KERN_INFO "eHCA scaling code enabled\n");
@ -821,7 +827,9 @@ void ehca_destroy_comp_pool(void)
if (!ehca_scaling_code)
return;
#ifdef CONFIG_HOTPLUG_CPU
unregister_cpu_notifier(&comp_pool_callback_nb);
#endif
for (i = 0; i < NR_CPUS; i++) {
if (cpu_online(i))