Make sure ERTS_WRITE_UNLIKELY section is also set on declaration

Otherwise on targets which have small data area with short addressing
like on PowerPC ther will be linking errors due to the mismatch of
declaration/usage and definition.

3 files changed, 17 insertions, 15 deletions

diff --git a/erts/emulator/beam/erl_alloc.h b/erts/emulator/beam/erl_alloc.h
index 117f96a4ad..efde36e47a 100644
--- a/erts/emulator/beam/erl_alloc.h
+++ b/erts/emulator/beam/erl_alloc.h
@@ -126,8 +126,10 @@ typedef struct {
     void *extra;
 } ErtsAllocatorFunctions_t;
 
-extern ErtsAllocatorFunctions_t erts_allctrs[ERTS_ALC_A_MAX+1];
-extern ErtsAllocatorInfo_t erts_allctrs_info[ERTS_ALC_A_MAX+1];
+extern ErtsAllocatorFunctions_t
+    ERTS_WRITE_UNLIKELY(erts_allctrs[ERTS_ALC_A_MAX+1]);
+extern ErtsAllocatorInfo_t
+    ERTS_WRITE_UNLIKELY(erts_allctrs_info[ERTS_ALC_A_MAX+1]);
 
 typedef struct {
     int enabled;
diff --git a/erts/emulator/beam/erl_msacc.h b/erts/emulator/beam/erl_msacc.h
index 2588dec903..895b1ae319 100644
--- a/erts/emulator/beam/erl_msacc.h
+++ b/erts/emulator/beam/erl_msacc.h
@@ -159,12 +159,12 @@ struct erl_msacc_t_ {
 
 #ifdef ERTS_ENABLE_MSACC
 
-extern erts_tsd_key_t erts_msacc_key;
+extern erts_tsd_key_t ERTS_WRITE_UNLIKELY(erts_msacc_key);
 
 #ifdef ERTS_MSACC_ALWAYS_ON
 #define erts_msacc_enabled 1
 #else
-extern int erts_msacc_enabled;
+extern int ERTS_WRITE_UNLIKELY(erts_msacc_enabled);
 #endif
 
 #define ERTS_MSACC_TSD_GET() erts_tsd_get(erts_msacc_key)
diff --git a/erts/emulator/beam/erl_process.h b/erts/emulator/beam/erl_process.h
index 66d7848f89..76dea2ce37 100644
--- a/erts/emulator/beam/erl_process.h
+++ b/erts/emulator/beam/erl_process.h
@@ -105,12 +105,12 @@ struct saved_calls {
 };
 
 extern Export exp_send, exp_receive, exp_timeout;
-extern int erts_sched_compact_load;
-extern int erts_sched_balance_util;
-extern Uint erts_no_schedulers;
-extern Uint erts_no_total_schedulers;
-extern Uint erts_no_dirty_cpu_schedulers;
-extern Uint erts_no_dirty_io_schedulers;
+extern int ERTS_WRITE_UNLIKELY(erts_sched_compact_load);
+extern int ERTS_WRITE_UNLIKELY(erts_sched_balance_util);
+extern Uint ERTS_WRITE_UNLIKELY(erts_no_schedulers);
+extern Uint ERTS_WRITE_UNLIKELY(erts_no_total_schedulers);
+extern Uint ERTS_WRITE_UNLIKELY(erts_no_dirty_cpu_schedulers);
+extern Uint ERTS_WRITE_UNLIKELY(erts_no_dirty_io_schedulers);
 extern Uint erts_no_run_queues;
 extern int erts_sched_thread_suggested_stack_size;
 extern int erts_dcpu_sched_thread_suggested_stack_size;
@@ -1270,7 +1270,7 @@ void erts_check_for_holes(Process* p);
 #define SPO_OFF_HEAP_MSGQ 16
 #define SPO_ON_HEAP_MSGQ 32
 
-extern int erts_default_spo_flags;
+extern int ERTS_WRITE_UNLIKELY(erts_default_spo_flags);
 
 /*
  * The following struct contains options for a process to be spawned.
@@ -1326,10 +1326,10 @@ extern erts_rwmtx_t erts_cpu_bind_rwmtx;
 ** erts_system_monitor must be != NIL, to allow testing on just
 ** the erts_system_monitor_* variables.
 */
-extern Eterm erts_system_monitor;
-extern Uint erts_system_monitor_long_gc;
-extern Uint erts_system_monitor_long_schedule;
-extern Uint erts_system_monitor_large_heap;
+extern Eterm ERTS_WRITE_UNLIKELY(erts_system_monitor);
+extern Uint ERTS_WRITE_UNLIKELY(erts_system_monitor_long_gc);
+extern Uint ERTS_WRITE_UNLIKELY(erts_system_monitor_long_schedule);
+extern Uint ERTS_WRITE_UNLIKELY(erts_system_monitor_large_heap);
 struct erts_system_monitor_flags_t {
 	 unsigned int busy_port : 1;
     unsigned int busy_dist_port : 1;