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-rw-r--r--erts/emulator/beam/io.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c
index 0f86d8e41d..50e08de8a4 100644
--- a/erts/emulator/beam/io.c
+++ b/erts/emulator/beam/io.c
@@ -1253,12 +1253,18 @@ try_imm_drv_call(ErtsTryImmDrvCallState *sp)
goto locked_fail;
}
-
if (!c_p)
reds_left_in = CONTEXT_REDS/10;
else {
if (IS_TRACED_FL(c_p, F_TRACE_SCHED_PROCS))
trace_virtual_sched(c_p, am_out);
+ /*
+ * No status lock held while sending runnable
+ * proc trace messages. It is however not needed
+ * in this case, since only this thread can send
+ * such messages for this process until the process
+ * has been scheduled out.
+ */
if (erts_system_profile_flags.runnable_procs
&& erts_system_profile_flags.exclusive)
profile_runnable_proc(c_p, am_inactive);
@@ -1319,6 +1325,13 @@ finalize_imm_drv_call(ErtsTryImmDrvCallState *sp)
if (IS_TRACED_FL(c_p, F_TRACE_SCHED_PROCS))
trace_virtual_sched(c_p, am_in);
+ /*
+ * No status lock held while sending runnable
+ * proc trace messages. It is however not needed
+ * in this case, since only this thread can send
+ * such messages for this process until the process
+ * has been scheduled out.
+ */
if (erts_system_profile_flags.runnable_procs
&& erts_system_profile_flags.exclusive)
profile_runnable_proc(c_p, am_active);