diff options
Diffstat (limited to 'runtime/transport/transport.c')
| -rw-r--r-- | runtime/transport/transport.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/runtime/transport/transport.c b/runtime/transport/transport.c index 89c90c96..36d5fc5a 100644 --- a/runtime/transport/transport.c +++ b/runtime/transport/transport.c @@ -19,6 +19,8 @@ static struct rchan *_stp_chan; static struct dentry *_stp_dir; #endif +static DECLARE_MUTEX(_stp_start_mutex); + static int _stp_dpid; static int _stp_pid; @@ -95,7 +97,11 @@ static void _stp_handle_buf_info(int *cpuptr) void _stp_handle_start (struct transport_start *st) { kbug ("stp_handle_start pid=%d\n", st->pid); + + down (&_stp_start_mutex); st->pid = probe_start(); + up (&_stp_start_mutex); + if (st->pid < 0) _stp_exit_called = 1; _stp_transport_send(STP_START, st, sizeof(*st)); @@ -140,7 +146,9 @@ static void _stp_cleanup_and_exit (int closing) */ static void _stp_handle_exit (void *data) { + down (&_stp_start_mutex); _stp_cleanup_and_exit(0); + up (&_stp_start_mutex); } /** |