Performance: Only dereference shmp once

[lttng-ust.git] / libringbuffer / frontend_internal.h

diff --git a/libringbuffer/frontend_internal.h b/libringbuffer/frontend_internal.h
index c973e6b25f88c1cc905bedfb28463f7cc5499316..10d6c4db789bbf498e3188a1a339c5e94223653f 100644 (file)
--- a/libringbuffer/frontend_internal.h
+++ b/libringbuffer/frontend_internal.h
@@ -294,10 +294,10 @@ static inline
 void lib_ring_buffer_write_commit_counter(const struct lttng_ust_lib_ring_buffer_config *config,
                                          struct lttng_ust_lib_ring_buffer *buf,
                                          struct channel *chan,
-                                         unsigned long idx,
                                          unsigned long buf_offset,
                                          unsigned long commit_count,
-                                         struct lttng_ust_shm_handle *handle)
+                                         struct lttng_ust_shm_handle *handle,
+                                         struct commit_counters_hot *cc_hot)
 {
        unsigned long commit_seq_old;
 
@@ -313,10 +313,9 @@ void lib_ring_buffer_write_commit_counter(const struct lttng_ust_lib_ring_buffer
        if (caa_unlikely(subbuf_offset(buf_offset - commit_count, chan)))
                return;
 
-       commit_seq_old = v_read(config, &shmp_index(handle, buf->commit_hot, idx)->seq);
+       commit_seq_old = v_read(config, &cc_hot->seq);
        if (caa_likely((long) (commit_seq_old - commit_count) < 0))
-               v_set(config, &shmp_index(handle, buf->commit_hot, idx)->seq,
-                       commit_count);
+               v_set(config, &cc_hot->seq, commit_count);
 }
 
 extern int lib_ring_buffer_create(struct lttng_ust_lib_ring_buffer *buf,