for_each_online_cpu(cpu) {
buf = per_cpu_ptr(chan->backend.buf, cpu);
lib_ring_buffer_iterator_init(chan, buf);
}
chan->hp_iter_enable = 1;
for_each_online_cpu(cpu) {
buf = per_cpu_ptr(chan->backend.buf, cpu);
lib_ring_buffer_iterator_init(chan, buf);
}
chan->hp_iter_enable = 1;
#else
for_each_possible_cpu(cpu) {
buf = per_cpu_ptr(chan->backend.buf, cpu);
#else
for_each_possible_cpu(cpu) {
buf = per_cpu_ptr(chan->backend.buf, cpu);
CHAN_WARN_ON(chan, config->output != RING_BUFFER_ITERATOR);
if (config->alloc == RING_BUFFER_ALLOC_PER_CPU) {
CHAN_WARN_ON(chan, config->output != RING_BUFFER_ITERATOR);
if (config->alloc == RING_BUFFER_ALLOC_PER_CPU) {
/* Allow CPU hotplug to keep track of opened reader */
chan->iter.read_open = 1;
for_each_channel_cpu(cpu, chan) {
/* Allow CPU hotplug to keep track of opened reader */
chan->iter.read_open = 1;
for_each_channel_cpu(cpu, chan) {
} else {
buf = channel_get_ring_buffer(config, chan, 0);
ret = lib_ring_buffer_iterator_open(buf);
} else {
buf = channel_get_ring_buffer(config, chan, 0);
ret = lib_ring_buffer_iterator_open(buf);
error:
/* Error should always happen on CPU 0, hence no close is required. */
CHAN_WARN_ON(chan, cpu != 0);
error:
/* Error should always happen on CPU 0, hence no close is required. */
CHAN_WARN_ON(chan, cpu != 0);
for_each_channel_cpu(cpu, chan) {
buf = channel_get_ring_buffer(config, chan, cpu);
if (buf->iter.read_open) {
for_each_channel_cpu(cpu, chan) {
buf = channel_get_ring_buffer(config, chan, cpu);
if (buf->iter.read_open) {
} else {
buf = channel_get_ring_buffer(config, chan, 0);
lib_ring_buffer_iterator_release(buf);
} else {
buf = channel_get_ring_buffer(config, chan, 0);
lib_ring_buffer_iterator_release(buf);
struct lttng_kernel_ring_buffer *buf = inode->i_private;
struct lttng_kernel_ring_buffer_channel *chan = buf->backend.chan;
struct lttng_kernel_ring_buffer *buf = inode->i_private;
struct lttng_kernel_ring_buffer_channel *chan = buf->backend.chan;
struct lttng_kernel_ring_buffer_channel *chan = inode->i_private;
const struct lttng_kernel_ring_buffer_config *config = &chan->backend.config;
struct lttng_kernel_ring_buffer_channel *chan = inode->i_private;
const struct lttng_kernel_ring_buffer_config *config = &chan->backend.config;