MFC r278166, MFV r266993:

4469 DTrace helper tracing should be dynamic

Reference:
https://illumos.org/issues/4469

Obtained from:	Illumos
Phabric:	D1551
Reviewed by:	markj

2 files changed, 0 insertions, 16 deletions

diff --git a/sys/cddl/dev/dtrace/dtrace_load.c b/sys/cddl/dev/dtrace/dtrace_load.c
index 8a622c7..c49de55 100644
--- a/sys/cddl/dev/dtrace/dtrace_load.c
+++ b/sys/cddl/dev/dtrace/dtrace_load.c
@@ -137,17 +137,6 @@ dtrace_load(void *dummy)
 
 	mutex_exit(&cpu_lock);
 
-	/*
-	 * If DTrace helper tracing is enabled, we need to allocate the
-	 * trace buffer and initialize the values.
-	 */
-	if (dtrace_helptrace_enabled) {
-		ASSERT(dtrace_helptrace_buffer == NULL);
-		dtrace_helptrace_buffer =
-		    kmem_zalloc(dtrace_helptrace_bufsize, KM_SLEEP);
-		dtrace_helptrace_next = 0;
-	}
-
 	mutex_exit(&dtrace_lock);
 	mutex_exit(&dtrace_provider_lock);
 
diff --git a/sys/cddl/dev/dtrace/dtrace_unload.c b/sys/cddl/dev/dtrace/dtrace_unload.c
index da58b8db..b0d22e6 100644
--- a/sys/cddl/dev/dtrace/dtrace_unload.c
+++ b/sys/cddl/dev/dtrace/dtrace_unload.c
@@ -69,11 +69,6 @@ dtrace_unload()
 
 	mutex_exit(&cpu_lock);
 
-	if (dtrace_helptrace_enabled) {
-		kmem_free(dtrace_helptrace_buffer, 0);
-		dtrace_helptrace_buffer = NULL;
-	}
-
 	if (dtrace_probes != NULL) {
 		kmem_free(dtrace_probes, 0);
 		dtrace_probes = NULL;