diff options
author | Hoang-Nam Nguyen <hnguyen@linux.vnet.ibm.com> | 2007-02-15 17:08:33 +0100 |
---|---|---|
committer | Roland Dreier <rolandd@cisco.com> | 2007-02-16 13:57:34 -0800 |
commit | 4fd3006032446be2b331dd482e34c6a9e644a5b8 (patch) | |
tree | f3266f1362a6a5a12e332eae4a23daf246822bd9 /drivers/infiniband/hw/ehca/ehca_irq.c | |
parent | 8b16cef3df871b005f3a97e273b5b135ebfb3769 (diff) |
IB/ehca: Allow en/disabling scaling code via module parameter
Allow users to en/disable scaling code when loading ib_ehca module,
rather than requiring the module to be rebuilt to change the setting.
Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ehca/ehca_irq.c')
-rw-r--r-- | drivers/infiniband/hw/ehca/ehca_irq.c | 47 |
1 files changed, 21 insertions, 26 deletions
diff --git a/drivers/infiniband/hw/ehca/ehca_irq.c b/drivers/infiniband/hw/ehca/ehca_irq.c index 9679b072ad0..3ec53c687d0 100644 --- a/drivers/infiniband/hw/ehca/ehca_irq.c +++ b/drivers/infiniband/hw/ehca/ehca_irq.c @@ -63,15 +63,11 @@ #define ERROR_DATA_LENGTH EHCA_BMASK_IBM(52,63) #define ERROR_DATA_TYPE EHCA_BMASK_IBM(0,7) -#ifdef CONFIG_INFINIBAND_EHCA_SCALING - static void queue_comp_task(struct ehca_cq *__cq); static struct ehca_comp_pool* pool; static struct notifier_block comp_pool_callback_nb; -#endif - static inline void comp_event_callback(struct ehca_cq *cq) { if (!cq->ib_cq.comp_handler) @@ -423,13 +419,13 @@ static inline void process_eqe(struct ehca_shca *shca, struct ehca_eqe *eqe) return; } reset_eq_pending(cq); -#ifdef CONFIG_INFINIBAND_EHCA_SCALING - queue_comp_task(cq); - spin_unlock_irqrestore(&ehca_cq_idr_lock, flags); -#else - spin_unlock_irqrestore(&ehca_cq_idr_lock, flags); - comp_event_callback(cq); -#endif + if (ehca_scaling_code) { + queue_comp_task(cq); + spin_unlock_irqrestore(&ehca_cq_idr_lock, flags); + } else { + spin_unlock_irqrestore(&ehca_cq_idr_lock, flags); + comp_event_callback(cq); + } } else { ehca_dbg(&shca->ib_device, "Got non completion event"); @@ -508,13 +504,12 @@ void ehca_process_eq(struct ehca_shca *shca, int is_irq) /* call completion handler for cached eqes */ for (i = 0; i < eqe_cnt; i++) if (eq->eqe_cache[i].cq) { -#ifdef CONFIG_INFINIBAND_EHCA_SCALING - spin_lock(&ehca_cq_idr_lock); - queue_comp_task(eq->eqe_cache[i].cq); - spin_unlock(&ehca_cq_idr_lock); -#else - comp_event_callback(eq->eqe_cache[i].cq); -#endif + if (ehca_scaling_code) { + spin_lock(&ehca_cq_idr_lock); + queue_comp_task(eq->eqe_cache[i].cq); + spin_unlock(&ehca_cq_idr_lock); + } else + comp_event_callback(eq->eqe_cache[i].cq); } else { ehca_dbg(&shca->ib_device, "Got non completion event"); parse_identifier(shca, eq->eqe_cache[i].eqe->entry); @@ -540,8 +535,6 @@ void ehca_tasklet_eq(unsigned long data) ehca_process_eq((struct ehca_shca*)data, 1); } -#ifdef CONFIG_INFINIBAND_EHCA_SCALING - static inline int find_next_online_cpu(struct ehca_comp_pool* pool) { int cpu; @@ -764,14 +757,14 @@ static int comp_pool_callback(struct notifier_block *nfb, return NOTIFY_OK; } -#endif - int ehca_create_comp_pool(void) { -#ifdef CONFIG_INFINIBAND_EHCA_SCALING int cpu; struct task_struct *task; + if (!ehca_scaling_code) + return 0; + pool = kzalloc(sizeof(struct ehca_comp_pool), GFP_KERNEL); if (pool == NULL) return -ENOMEM; @@ -796,16 +789,19 @@ int ehca_create_comp_pool(void) 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"); return 0; } void ehca_destroy_comp_pool(void) { -#ifdef CONFIG_INFINIBAND_EHCA_SCALING int i; + if (!ehca_scaling_code) + return; + unregister_cpu_notifier(&comp_pool_callback_nb); for (i = 0; i < NR_CPUS; i++) { @@ -814,5 +810,4 @@ void ehca_destroy_comp_pool(void) } free_percpu(pool->cpu_comp_tasks); kfree(pool); -#endif } |