Update the ddb and gdb backends for the new 'trace_thread' hook.

It is implemented via db_trace_thread() for DDB and not implemented
for GDB.  This should have been part of r234190.

Pointy hat to:	jhb
Reported by:	jkim
MFC after:	1 week

1 files changed, 15 insertions, 1 deletions

diff --git a/sys/ddb/db_main.c b/sys/ddb/db_main.c
index 8375108..6e9286c 100644
--- a/sys/ddb/db_main.c
+++ b/sys/ddb/db_main.c
@@ -51,8 +51,10 @@ SYSCTL_NODE(_debug, OID_AUTO, ddb, CTLFLAG_RW, 0, "DDB settings");
 static dbbe_init_f db_init;
 static dbbe_trap_f db_trap;
 static dbbe_trace_f db_trace_self_wrapper;
+static dbbe_trace_thread_f db_trace_thread_wrapper;
 
-KDB_BACKEND(ddb, db_init, db_trace_self_wrapper, db_trap);
+KDB_BACKEND(ddb, db_init, db_trace_self_wrapper, db_trace_thread_wrapper,
+    db_trap);
 
 vm_offset_t ksym_start, ksym_end;
 
@@ -246,3 +248,15 @@ db_trace_self_wrapper(void)
 		db_trace_self();
 	(void)kdb_jmpbuf(prev_jb);
 }
+
+static void
+db_trace_thread_wrapper(struct thread *td)
+{
+	jmp_buf jb;
+	void *prev_jb;
+
+	prev_jb = kdb_jmpbuf(jb);
+	if (setjmp(jb) == 0)
+		db_trace_thread(td, -1);
+	(void)kdb_jmpbuf(prev_jb);
+}