1 files changed, 3 insertions, 7 deletions

diff --git a/sys/dev/hwpmc/hwpmc_mod.c b/sys/dev/hwpmc/hwpmc_mod.c
index 4c452598ad0f7..e9c47881894ef 100644
--- a/sys/dev/hwpmc/hwpmc_mod.c
+++ b/sys/dev/hwpmc/hwpmc_mod.c
@@ -1715,11 +1715,9 @@ pmc_process_thread_delete(struct thread *td)
 static void
 pmc_process_thread_userret(struct thread *td)
 {
-
-	thread_lock(td);
-	curthread->td_flags |= TDF_ASTPENDING;
-	thread_unlock(td);
-	pmc_post_callchain_callback();
+	sched_pin();
+	pmc_capture_user_callchain(curcpu, PMC_UR, td->td_frame);
+	sched_unpin();
 }
 
 /*
@@ -2254,8 +2252,6 @@ pmc_hook_handler(struct thread *td, int function, void *arg)
 		cpu = PCPU_GET(cpuid);
 		pmc_capture_user_callchain(cpu, PMC_SR,
 		    (struct trapframe *) arg);
-		pmc_capture_user_callchain(cpu, PMC_UR,
-		    (struct trapframe *) arg);
 
 		KASSERT(td->td_pinned == 1,
 		    ("[pmc,%d] invalid td_pinned value", __LINE__));