static enum hrtimer_restart profile_spus(struct hrtimer *timer)
{
ktime_t kt;
int cpu, node, k, num_samples, spu_num;
if (!spu_prof_running)
goto stop;
for_each_online_cpu(cpu) {
if (cbe_get_hw_thread_id(cpu))
continue;
node = cbe_cpu_to_node(cpu);
/* There should only be one kernel thread at a time processing
* the samples. In the very unlikely case that the processing
* is taking a very long time and multiple kernel threads are
* started to process the samples. Make sure only one kernel
* thread is working on the samples array at a time. The
* sample array must be loaded and then processed for a given
* cpu. The sample array is not per cpu.
*/
spin_lock_irqsave(&sample_array_lock,
sample_array_lock_flags);
num_samples = cell_spu_pc_collection(cpu);
if (num_samples == 0) {
spin_unlock_irqrestore(&sample_array_lock,
sample_array_lock_flags);
continue;
}
for (k = 0; k < SPUS_PER_NODE; k++) {
spu_num = k + (node * SPUS_PER_NODE);
spu_sync_buffer(spu_num,
samples + (k * TRACE_ARRAY_SIZE),
num_samples);
}
spin_unlock_irqrestore(&sample_array_lock,
sample_array_lock_flags);
}
smp_wmb(); /* insure spu event buffer updates are written */
/* don't want events intermingled... */
kt = ktime_set(0, profiling_interval);
if (!spu_prof_running)
goto stop;
hrtimer_forward(timer, timer->base->get_time(), kt);
return HRTIMER_RESTART;
stop:
printk(KERN_INFO "SPU_PROF: spu-prof timer ending\n");
return HRTIMER_NORESTART;
}
static enum hrtimer_restart profile_spus(struct hrtimer *timer)
{
ktime_t kt;
int cpu, node, k, num_samples, spu_num;
if (!spu_prof_running)
goto stop;
for_each_online_cpu(cpu) {
if (cbe_get_hw_thread_id(cpu))
continue;
node = cbe_cpu_to_node(cpu);
spin_lock_irqsave(&oprof_spu_smpl_arry_lck,
oprof_spu_smpl_arry_lck_flags);
num_samples = cell_spu_pc_collection(cpu);
if (num_samples == 0) {
spin_unlock_irqrestore(&oprof_spu_smpl_arry_lck,
oprof_spu_smpl_arry_lck_flags);
continue;
}
for (k = 0; k < SPUS_PER_NODE; k++) {
spu_num = k + (node * SPUS_PER_NODE);
spu_sync_buffer(spu_num,
samples + (k * TRACE_ARRAY_SIZE),
num_samples);
}
spin_unlock_irqrestore(&oprof_spu_smpl_arry_lck,
oprof_spu_smpl_arry_lck_flags);
}
smp_wmb(); /* insure spu event buffer updates are written */
kt = ktime_set(0, profiling_interval);
if (!spu_prof_running)
goto stop;
hrtimer_forward(timer, timer->base->get_time(), kt);
return HRTIMER_RESTART;
stop:
printk(KERN_INFO "SPU_PROF: spu-prof timer ending\n");
return HRTIMER_NORESTART;
}
