diff --git a/include/jemalloc/internal/prof_data_externs.h b/include/jemalloc/internal/prof_data_externs.h
new file mode 100644
index 00000000..95dc6b0b
--- /dev/null
+++ b/include/jemalloc/internal/prof_data_externs.h
@@ -0,0 +1,22 @@
+#ifndef JEMALLOC_INTERNAL_PROF_DATA_EXTERNS_H
+#define JEMALLOC_INTERNAL_PROF_DATA_EXTERNS_H
+
+#include "jemalloc/internal/mutex.h"
+
+extern malloc_mutex_t *gctx_locks;
+extern malloc_mutex_t *tdata_locks;
+
+void prof_bt_hash(const void *key, size_t r_hash[2]);
+bool prof_bt_keycomp(const void *k1, const void *k2);
+
+bool prof_data_init(tsd_t *tsd);
+bool prof_dump(tsd_t *tsd, bool propagate_err, const char *filename,
+    bool leakcheck);
+prof_tdata_t * prof_tdata_init_impl(tsd_t *tsd, uint64_t thr_uid,
+    uint64_t thr_discrim, char *thread_name, bool active, bool reset_interval);
+void prof_tdata_detach(tsd_t *tsd, prof_tdata_t *tdata);
+void bt_init(prof_bt_t *bt, void **vec);
+void prof_backtrace(tsd_t *tsd, prof_bt_t *bt);
+void prof_tctx_try_destroy(tsd_t *tsd, prof_tctx_t *tctx);
+
+#endif /* JEMALLOC_INTERNAL_PROF_DATA_EXTERNS_H */
diff --git a/include/jemalloc/internal/prof_externs.h b/include/jemalloc/internal/prof_externs.h
index bd73a296..9ba363bf 100644
--- a/include/jemalloc/internal/prof_externs.h
+++ b/include/jemalloc/internal/prof_externs.h
@@ -7,9 +7,6 @@ extern malloc_mutex_t bt2gctx_mtx;
 extern malloc_mutex_t tdatas_mtx;
 extern malloc_mutex_t prof_dump_mtx;
 
-malloc_mutex_t *prof_gctx_mutex_choose(void);
-malloc_mutex_t *prof_tdata_mutex_choose(uint64_t thr_uid);
-
 extern bool opt_prof;
 extern bool opt_prof_active;
 extern bool opt_prof_thread_active_init;
@@ -48,12 +45,14 @@ extern bool prof_booted;
 bool prof_idump_accum_impl(tsdn_t *tsdn, uint64_t accumbytes);
 void prof_idump_rollback_impl(tsdn_t *tsdn, size_t usize);
 
+/* Functions only accessed in prof_inlines_b.h */
+prof_tdata_t *prof_tdata_init(tsd_t *tsd);
+prof_tdata_t *prof_tdata_reinit(tsd_t *tsd, prof_tdata_t *tdata);
+
 void prof_alloc_rollback(tsd_t *tsd, prof_tctx_t *tctx, bool updated);
 void prof_malloc_sample_object(tsd_t *tsd, const void *ptr, size_t usize,
     prof_tctx_t *tctx);
 void prof_free_sampled_object(tsd_t *tsd, size_t usize, prof_info_t *prof_info);
-void bt_init(prof_bt_t *bt, void **vec);
-void prof_backtrace(tsd_t *tsd, prof_bt_t *bt);
 prof_tctx_t *prof_tctx_create(tsd_t *tsd);
 #ifdef JEMALLOC_JET
 size_t prof_tdata_count(void);
@@ -76,10 +75,6 @@ bool prof_mdump(tsd_t *tsd, const char *filename);
 void prof_gdump(tsdn_t *tsdn);
 bool prof_dump_prefix_set(tsdn_t *tsdn, const char *prefix);
 
-void prof_bt_hash(const void *key, size_t r_hash[2]);
-bool prof_bt_keycomp(const void *k1, const void *k2);
-prof_tdata_t *prof_tdata_init(tsd_t *tsd);
-prof_tdata_t *prof_tdata_reinit(tsd_t *tsd, prof_tdata_t *tdata);
 void prof_reset(tsd_t *tsd, size_t lg_sample);
 void prof_tdata_cleanup(tsd_t *tsd);
 bool prof_active_get(tsdn_t *tsdn);
@@ -101,26 +96,7 @@ void prof_postfork_parent(tsdn_t *tsdn);
 void prof_postfork_child(tsdn_t *tsdn);
 void prof_sample_threshold_update(tsd_t *tsd);
 
-void prof_try_log(tsd_t *tsd, size_t usize, prof_info_t *prof_info);
 bool prof_log_start(tsdn_t *tsdn, const char *filename);
 bool prof_log_stop(tsdn_t *tsdn);
-bool prof_log_init(tsd_t *tsdn);
-#ifdef JEMALLOC_JET
-size_t prof_log_bt_count(void);
-size_t prof_log_alloc_count(void);
-size_t prof_log_thr_count(void);
-bool prof_log_is_logging(void);
-bool prof_log_rep_check(void);
-void prof_log_dummy_set(bool new_value);
-#endif
-
-/* Functions in prof_data.c only used in profiling code. */
-bool prof_data_init(tsd_t *tsd);
-bool prof_dump(tsd_t *tsd, bool propagate_err, const char *filename,
-    bool leakcheck);
-prof_tdata_t * prof_tdata_init_impl(tsd_t *tsd, uint64_t thr_uid,
-    uint64_t thr_discrim, char *thread_name, bool active, bool reset_interval);
-void prof_tdata_detach(tsd_t *tsd, prof_tdata_t *tdata);
-void prof_tctx_try_destroy(tsd_t *tsd, prof_tctx_t *tctx);
 
 #endif /* JEMALLOC_INTERNAL_PROF_EXTERNS_H */
diff --git a/include/jemalloc/internal/prof_log_externs.h b/include/jemalloc/internal/prof_log_externs.h
new file mode 100644
index 00000000..cde651b5
--- /dev/null
+++ b/include/jemalloc/internal/prof_log_externs.h
@@ -0,0 +1,17 @@
+#ifndef JEMALLOC_INTERNAL_PROF_LOG_EXTERNS_H
+#define JEMALLOC_INTERNAL_PROF_LOG_EXTERNS_H
+
+#include "jemalloc/internal/mutex.h"
+
+void prof_try_log(tsd_t *tsd, size_t usize, prof_info_t *prof_info);
+bool prof_log_init(tsd_t *tsdn);
+#ifdef JEMALLOC_JET
+size_t prof_log_bt_count(void);
+size_t prof_log_alloc_count(void);
+size_t prof_log_thr_count(void);
+bool prof_log_is_logging(void);
+bool prof_log_rep_check(void);
+void prof_log_dummy_set(bool new_value);
+#endif
+
+#endif /* JEMALLOC_INTERNAL_PROF_LOG_EXTERNS_H */
diff --git a/src/prof.c b/src/prof.c
index 3a72e9c4..58839bc4 100644
--- a/src/prof.c
+++ b/src/prof.c
@@ -5,6 +5,8 @@
 #include "jemalloc/internal/ctl.h"
 #include "jemalloc/internal/assert.h"
 #include "jemalloc/internal/mutex.h"
+#include "jemalloc/internal/prof_data_externs.h"
+#include "jemalloc/internal/prof_log_externs.h"
 #include "jemalloc/internal/thread_event.h"
 
 /*
@@ -73,24 +75,6 @@ uint64_t prof_interval = 0;
 
 size_t lg_prof_sample;
 
-/*
- * Table of mutexes that are shared among gctx's.  These are leaf locks, so
- * there is no problem with using them for more than one gctx at the same time.
- * The primary motivation for this sharing though is that gctx's are ephemeral,
- * and destroying mutexes causes complications for systems that allocate when
- * creating/destroying mutexes.
- */
-static malloc_mutex_t *gctx_locks;
-static atomic_u_t cum_gctxs; /* Atomic counter. */
-
-/*
- * Table of mutexes that are shared among tdata's.  No operations require
- * holding multiple tdata locks, so there is no problem with using them for more
- * than one tdata at the same time, even though a gctx lock may be acquired
- * while holding a tdata lock.
- */
-static malloc_mutex_t *tdata_locks;
-
 /* Non static to enable profiling. */
 malloc_mutex_t bt2gctx_mtx;
 
@@ -431,18 +415,6 @@ prof_backtrace(tsd_t *tsd, prof_bt_t *bt) {
 	post_reentrancy(tsd);
 }
 
-malloc_mutex_t *
-prof_gctx_mutex_choose(void) {
-	unsigned ngctxs = atomic_fetch_add_u(&cum_gctxs, 1, ATOMIC_RELAXED);
-
-	return &gctx_locks[(ngctxs - 1) % PROF_NCTX_LOCKS];
-}
-
-malloc_mutex_t *
-prof_tdata_mutex_choose(uint64_t thr_uid) {
-	return &tdata_locks[thr_uid % PROF_NTDATA_LOCKS];
-}
-
 /*
  * The bodies of this function and prof_leakcheck() are compiled out unless heap
  * profiling is enabled, so that it is possible to compile jemalloc with
diff --git a/src/prof_data.c b/src/prof_data.c
index 8a2cc845..5c2b926b 100644
--- a/src/prof_data.c
+++ b/src/prof_data.c
@@ -6,6 +6,7 @@
 #include "jemalloc/internal/ckh.h"
 #include "jemalloc/internal/hash.h"
 #include "jemalloc/internal/malloc_io.h"
+#include "jemalloc/internal/prof_data_externs.h"
 
 /*
  * This file defines and manages the core profiling data structures.
@@ -25,6 +26,24 @@
 
 /******************************************************************************/
 
+/*
+ * Table of mutexes that are shared among gctx's.  These are leaf locks, so
+ * there is no problem with using them for more than one gctx at the same time.
+ * The primary motivation for this sharing though is that gctx's are ephemeral,
+ * and destroying mutexes causes complications for systems that allocate when
+ * creating/destroying mutexes.
+ */
+malloc_mutex_t *gctx_locks;
+static atomic_u_t cum_gctxs; /* Atomic counter. */
+
+/*
+ * Table of mutexes that are shared among tdata's.  No operations require
+ * holding multiple tdata locks, so there is no problem with using them for more
+ * than one tdata at the same time, even though a gctx lock may be acquired
+ * while holding a tdata lock.
+ */
+malloc_mutex_t *tdata_locks;
+
 /*
  * Global hash of (prof_bt_t *)-->(prof_gctx_t *).  This is the master data
  * structure that knows about all backtraces currently captured.
@@ -114,6 +133,18 @@ rb_gen(static UNUSED, tdata_tree_, prof_tdata_tree_t, prof_tdata_t, tdata_link,
 
 /******************************************************************************/
 
+static malloc_mutex_t *
+prof_gctx_mutex_choose(void) {
+	unsigned ngctxs = atomic_fetch_add_u(&cum_gctxs, 1, ATOMIC_RELAXED);
+
+	return &gctx_locks[(ngctxs - 1) % PROF_NCTX_LOCKS];
+}
+
+static malloc_mutex_t *
+prof_tdata_mutex_choose(uint64_t thr_uid) {
+	return &tdata_locks[thr_uid % PROF_NTDATA_LOCKS];
+}
+
 bool
 prof_data_init(tsd_t *tsd) {
 	tdata_tree_new(&tdatas);
diff --git a/src/prof_log.c b/src/prof_log.c
index 2904f0c6..6ac81e07 100644
--- a/src/prof_log.c
+++ b/src/prof_log.c
@@ -4,10 +4,12 @@
 
 #include "jemalloc/internal/assert.h"
 #include "jemalloc/internal/ckh.h"
+#include "jemalloc/internal/emitter.h"
 #include "jemalloc/internal/hash.h"
 #include "jemalloc/internal/malloc_io.h"
 #include "jemalloc/internal/mutex.h"
-#include "jemalloc/internal/emitter.h"
+#include "jemalloc/internal/prof_data_externs.h"
+#include "jemalloc/internal/prof_log_externs.h"
 
 bool opt_prof_log = false;
 typedef enum prof_logging_state_e prof_logging_state_t;
diff --git a/test/unit/prof_log.c b/test/unit/prof_log.c
index 9336ebca..e816d4e6 100644
--- a/test/unit/prof_log.c
+++ b/test/unit/prof_log.c
@@ -1,4 +1,5 @@
 #include "test/jemalloc_test.h"
+#include "jemalloc/internal/prof_log_externs.h"
 
 #define N_PARAM 100
 #define N_THREADS 10